JPH0966461A - Honing jig and automatic honing device - Google Patents

Abstract

(57) Abstract: A honing jig having a structure capable of automating a cylindrical work regardless of the thickness of the work by a device that can easily attach and detach the work. A work holder 17 that stores and holds a work W is provided on an oscillating body that is swingably provided in a three-dimensional direction. The work holder 17 chucks and supports the entire outer peripheral surface of the work W. A tightening spring mechanism 41 is provided. In this tightening spring mechanism 41, the cylindrical chucking surface 47 is expanded and contracted by the deformation operation of the coil spring 45 in the winding direction by the opening / closing portion 46, and the work W
The entire outer peripheral surface of the is chucked and supported detachably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honing jig and an automatic honing device, and more specifically, it holds a workpiece swingably in a three-dimensional direction by a floating structure and automatically carries in and out the workpiece. The present invention relates to a honing processing technique having a structure for performing the operation.

[0002]

2. Description of the Related Art In honing of an inner peripheral surface of a cylindrical workpiece (hereinafter referred to as a work), generally, the honing tool and the work are relatively floated, and the honing tool is rotated and reciprocated. At the same time, while expanding the grindstone of the honing tool by the expansion mechanism, precision finishing is performed on the inner peripheral surface of the work.

In the honing process for a small-sized and lightweight work, for example, a thin-walled cylindrical work W as shown in FIG. 18, the work W is generally placed in a floating state. An example of a conventional honing jig used for this purpose is shown in FIGS.

This jig is for automatic honing processing, and comprises a support b, which is provided upright on a jig base a,
An intermediate ring c is swingably supported by b through XX cross pins d, d, and a work holder e for fixing and holding a work W on the intermediate ring c has YY cross pins f, f.
It is swingably supported via. The work holder e has a storage part g for storing and holding the work W in the center thereof.
In addition, a fixing cap h for fixing the work is detachably screwed onto the upper portion of the accommodating portion g.

Then, the fixed cap h is removed, the work W is stored in the storage portion g, and then the fixed cap h is screwed again, whereby the work W is fixed by tightening the upper and lower end surfaces thereof in the vertical direction. The work holder e is integrated with the work W, and the inner peripheral surface Wa of the work W is subjected to honing by a honing tool (not shown) from above.

In this case, the work holder e can be swung in three-dimensional directions by the two orthogonal cross pins d and f, and the work W can follow the movement of the honing tool to ensure precise honing. .

[0007]

However, such a holding structure has various problems as listed below, and further improvement has been desired.

(1) Since the work W itself has a simple cylindrical shape with no protrusions in the lateral direction and there is no rotation stopper, the work W is held and fixed (fixed in the vertical and rotational directions) exclusively. The upper and lower end surfaces of the work are clamped and fixed by screwing the fixing cap h. However, with such a fixing method using only vertical tightening, the work W is not sufficiently prevented from rotating, and the work W itself may be stored in the accommodating portion g of the work holder e depending on the rotational force of the honing tool. Therefore, it may turn around the axis, and it is not possible to expect high-precision honing.

(2) In order to prevent such rotation of the work W, it is conceivable to increase the screwing force (tightening force) by the fixed cap h, but as shown in FIG. 18, a thin cylindrical work is used. In W, due to this strong tightening force,
There is a risk that the work W itself will be distorted.

(3) In order to realize the complete automation of the honing process, it is necessary to mechanically and automatically attach / detach the fixing cap h, and such an automatic attaching / detaching device for the fixing cap h has a structure. It becomes very complicated and large-scale, and it causes a rise in the device cost.
Moreover, such an automatic attachment / detachment device inevitably requires torque management with respect to the tightening force of the fixed cap h from the viewpoint of maintaining the shape of the work W itself, which also increases the device cost. Invite.

Therefore, in the automatic honing apparatus employing such a conventional honing jig, it is the actual situation that the work W is still attached and detached to and from the honing jig as it is. Not realized.

The present invention has been made in view of such conventional problems, and an object thereof is an apparatus for easily attaching and detaching a cylindrical work regardless of its wall thickness. The purpose of the present invention is to provide a honing jig having a structure that can be automated.

A further object of the present invention is to provide an automatic honing device which is equipped with this honing jig and is fully automated.

[0014]

In order to achieve the above object, a honing jig of the present invention holds a cylindrical work and is carried by a work carrying device of an automatic honing device. A jig base movably mounted on the transfer path of the work transfer device, an oscillating body provided on the jig base so as to be swingable in a three-dimensional direction, and a work holder provided on the oscillating body. The work holder is characterized by including a tightening spring means having a cylindrical chucking surface for detachably chucking and supporting the entire outer peripheral surface of the work.

Preferably, the tightening spring means is
It is provided with a cylindrical coil spring having the cylindrical chucking surface in its inner diameter portion, and an opening / closing portion for expanding / contracting the cylindrical chucking surface of the coil spring. Further, the coil spring is configured such that a winding base end portion thereof is connected to a fixed side and a winding tip end portion thereof is connected to the opening / closing portion, and the opening / closing portion deforms the coil spring in a winding direction. The cylindrical chucking surface is expanded and contracted by the operation.

The automatic honing device of the present invention comprises the honing jig, and further, a work transfer device for transferring and positioning the honing jig along the honing processing part, and the work transfer part. And a chuck opening / closing device that is arranged at the work loading / unloading position to expand / contract the tightening spring means of the honing jig, and is placed at the work loading / unloading position of the work transfer unit with respect to the honing jig. A work loading / unloading device for loading and unloading a work, at least one honing machine disposed at a honing position of the work transporting unit and performing a honing process on the work transported by the work transporting device, and the work transporting unit. At least one measuring device for measuring the machining diameter of the workpiece, which is arranged at the measuring position of Click conveying device, the chuck opening and closing device, a work loading and unloading device, characterized by comprising a control device for automatically controlled in conjunction with each other honing machine and the measuring device.

Preferably, the chuck opening / closing device reciprocates linearly in the horizontal direction to reciprocally engage with the operating member of the tightening spring means of the honing jig, and the opening / closing rod. And a reciprocating cylinder to be operated, and the operating member of the opening / closing portion of the honing jig is in the form of an operating lever protruding outward in the horizontal direction from the opening / closing ring member, and the operating lever is rotated by the opening / closing rod. The opening / closing ring member is operated to rotate.

In the automatic honing apparatus using the honing jig of the present invention, the following series of processing steps are interlocked with each other according to the automatic control program of the control apparatus.

First, at the workpiece carrying-in / carrying-out position of the work carrying unit, the work carrying-in / carrying-out apparatus sets the work on the honing jig of the work carrying apparatus, and then the work carrying apparatus carries out the honing treatment in which the work is set. The tool is conveyed to a honing position and subjected to a predetermined honing process by a honing machine. In this honing process, the work is held by the honing jig so as to be swingable in the three-dimensional direction. Therefore, the work is smoothly followed by the movement of the honing tool of the honing machine to ensure the precise honing process. When the honing process is completed, the work transfer device again transfers the work to the workpiece loading / unloading position of the work transfer unit, and the work loading / unloading device removes the work from the honing jig.

With respect to the work after honing, the measuring device sequentially measures the working diameter of the work, and the measurement result is used for judging the quality of the work and fed back to the control section of the honing machine. Control the honing process.

In setting the work on the honing jig by the work loading / unloading device at the work loading / unloading position, first, the chuck opening / closing device operates the tightening spring means of the honing jig to move the cylinder. The chucking surface is expanded, and in this expanded state, the work loading / unloading device sets the work on the honing jig, and then the chuck opening / closing device operates the tightening spring means again to contract the cylindrical chucking surface. Then, the entire outer peripheral surface of the work is chucked and supported.

As described above, in the structure in which the tightening spring means chucks and supports the entire outer peripheral surface of the work, the concrete and suitable chucking structure as described above can be adopted, and the conventional fixing method can be used. Compared with the fixed support structure using a cap, the mechanical structure for automation can be simpler and smaller, and the setting and management of the chucking force for a work becomes much easier.

Further, the cylindrical chucking surface of the tightening spring means chucks and supports the entire outer peripheral surface of the workpiece, so that the cylindrical workpiece can be held and fixed, particularly in the rotation direction, regardless of its wall thickness. Is securely fixed, and the work itself is not distorted.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings.

Embodiment 1 A honing jig according to the present invention is shown in FIGS. 1 to 3, and this honing jig J is specifically equipped in the automatic honing device shown in FIG. . This automatic honing device is for honing the inner peripheral surface Wa of a thin-walled cylindrical work W as shown in FIG. 18, and includes a work transfer device 1, a part feeder 2, a work loading / unloading robot (work loading / unloading device). ) 3, chuck opening / closing device 4, pilot hole detecting device (measuring device) 5, first machining honing machine 6, first measuring device (measuring device) 7, second machining honing machine 8, second measuring device (measurement) (Device) 9, work selection device 10 and control device 11 as main parts. Each of these constituent devices will be described later.

The honing jig J holds the work W and is carried by the work carrying device 1. As shown in the drawing, the honing jig J includes a jig base 15, an oscillating body 16 and a work holder 17 as main parts. Is configured as.

The jig base 15 has a substantially square shape in plan view as shown in FIG. 1, and is movably mounted on the transfer path 20 of the work transfer device 1. Locking recesses (locking parts) 15a to 15d are provided in the center of each side of the jig base 15, and a pair of facing locking recesses 15a and 15b or 15c and 15d are respectively used to convey the work. Device 1
It is elastically locked with the positioning device 21 of.

Specifically, as shown in FIG. 1, the positioning device 21 is provided in the transfer path 20 of the work transfer device 1 in the form of a ball plunger composed of a locking ball 21a and an elastic spring 21b. ing. The positioning device 21 detects the position of the prepared hole detecting device 5, the processing position of the honing machines 6, 8 and the measuring position of the measuring devices 7, 9 at both side wall portions 20b of the guide groove 20a in the transport path 20. A pair of right and left portions are provided in the respective 20b so as to face each other. Then, each of these positioning devices 21, 2
The locking balls 21a, 21a of No. 1 are the jig base 15
The honing jig J is positioned and fixed by elastically locking the locking recesses 15a, 15b or 15c, 15d.

The rocking body 16 is provided on the jig base 15 so as to be rockable in the three-dimensional direction.
0 and the second oscillating portion 31.

The first oscillating portion 30 is an annular member having a cylindrical storage space 32 provided in the central portion thereof. The pair of support columns 33, 33 of the jig base 15 has X-cross pins 34,
It is provided so as to be suspended and swingable via 34.
In addition, the second swinging portion 31 is of a short columnar shape, and is provided in the storage space 32 of the first swinging portion 30 in a suspending manner and swingable via Y-cross pins 35, 35. .

The Y-cross pins 35, 35 are arranged so as to be orthogonal to the X-cross pins 34, 34, whereby the second swinging portion 31 moves the X-cross pins 34, 34 (X The movement of the Y-cross pins 35, 35 (rotation about the Y-Y axis) is added to the rotation about the -X axis) so that the Y-cross pins 35 can swing in the three-dimensional direction.

Further, the X-cross pin 34 is shown in FIG.
As shown in FIG. 3, the outer end of the shaft is attached and fixed to the support column 33, and the inner end of the shaft is attached to the first swinging part 30 via a radial bearing 36 that allows the axial movement thereof. It is supported. On the other hand, the Y-cross pin 35 is shown in FIG.
As shown in FIG. 5, the outer end portion is attached and fixed to the first swinging portion 30, and the inner end portion is connected to the second swinging portion via the radial bearing 37 that allows the movement in the axial direction. 31
Is supported by.

In addition to the swing in the three-dimensional direction described above, the second swing portion 31 has the axial direction of the X-cross pin 34 and the Y-cross pin 35, that is, the XX axial direction and the Y axial direction. It is also possible to move horizontally in the Y-axis direction. The horizontal allowable movement amount depends on, for example, the size of the gap between the support column 33 and the first oscillating portion 30 and the first oscillating portion 30 and the second oscillating portion 31 in each of the cross pins 34 and 35. It is set. Alternatively, other appropriate movement amount regulation means may be specially provided for this purpose.

Further, such radial bearings 36, 37
Use of the second swinging portion 31 and the work holder 17 attached thereto reduces the movement of
The swingability (rotational resistance) around the −X axis and around the YY axis becomes substantially uniform. As a result, as described later, good and uniform followability with respect to the honing tool 80 is secured,
It is possible to prevent the occurrence of a difference in processing accuracy and ensure high-precision honing processing.

As the radial bearings 36 and 37, bushes (including oil-impregnated bearings or Teflon-coated bushes) are used in the illustrated ones, but a bearing structure such as a ball bearing that ensures smoother movement. May be adopted.

The work holder 17 positions and holds the work W, and is provided at the center of the second swinging portion 31. As shown in FIGS. 4 to 6, the work holder 17 includes a holding base 40 and a tightening spring mechanism (tightening spring means) 41 as main parts.

The holding base 40 stores and holds the work W, and has a shape having a cylindrical outer peripheral surface as shown in FIGS. 7 and 8, and is provided in the central portion of the second swinging portion 31 about the axis thereof. It is rotatably supported by. Reference numeral 42 denotes a balancer for balancing the weight of the work holder 17 as a whole. The balancer 42 is integrally fixed to the second swinging portion 31, and the holding base 40 and the coil spring 4 are provided.
5 also functions as a support member.

At the center of the holding base 40 and the balancer 42, a work storage portion 43 for storing the work W is provided. Specifically, as shown in FIG. 6, the work storage portion 43 is composed of cylindrical holes continuously and concentrically provided in the central portions of both members 40 and 42. The cylinder inner peripheral surfaces 43a and 43b have substantially the same inner diameter dimension that is slightly larger than the outer diameter dimension of the work W, and the intermediate portion 43c has a larger diameter than both of the cylinder inner peripheral surfaces 43a and 43b. Are formed. Further, the lower portion 43 of the work storage portion 43
A locking shoulder portion 43d is provided at the lower end of b, and the work W
Forming a positioning portion that defines the axial position of the.

The tightening spring mechanism 41 detachably chucks and supports the work W, is arranged coaxially with the work storage portion 43, and cooperates with the holding base 40.

Specifically, the tightening spring mechanism 41 is provided with a coil spring 45 that detachably chucks and supports the entire outer peripheral surface of the work W, and an opening / closing portion 46 for expanding and contracting the coil spring 45. .

The coil spring 45 has a cylindrical shape as shown in FIGS. 6 and 7, and more specifically, a wire rod having a rectangular cross section is wound into a cylindrical shape in a state of closely contacting in the axial direction. The cylindrical inner diameter surface 47 formed from the spiral inner diameter surface of the wire is a cylindrical chucking surface that makes surface contact with the entire outer peripheral surface of the work W. The winding base end portion 45a and the winding tip end portion 45b of the coil spring 45 are
The coil springs 45 are provided so as to extend in the same tangential direction on the outer peripheral surface of the cylinder.

The coil spring 45 is accommodated from below in the spring accommodating portion 43c of the work accommodating portion 43, and the cylindrical chucking surface 47 and the cylindrical inner peripheral surfaces 43a and 43b of the work accommodating portion 43 are coaxially arranged. Has been done.

The winding structure of the coil spring 45 is as follows.
The cylindrical chucking surface 47 is set so as to detachably chuck and support the entire outer peripheral surface Wb of the work W. Specifically, when the cylindrical chucking surface 47 is in an expanded state (open state), the work W is smoothly attached and detached in the vertical direction, and when the cylindrical chucking surface 47 is in a contracted state (chucking state). , The thin work W is not distorted by the tightening force of the coil spring 45, and in the chucking state of the cylindrical chucking surface 47, the work W rotates about its axis by the honing rotational force during honing. The inner diameter of the cylindrical chucking surface 47 is set in consideration of basic conditions such as not being performed.

Further, the winding direction of the coil spring 45 is set such that the inner diameter of the cylindrical chucking surface 47 is contracted by the rotation of the honing tool 80. That is, the winding direction of the coil spring 45 is the same clockwise direction as the rotating direction of the honing tool 80, starting from the winding base end portion 45a in the theoretical configuration diagram of FIG. 9A. As a result, when the rotational force of the honing tool 80 during the honing process acts on the work W and the coil spring 45, the coil spring 4
5 contracts and closes, and the work W is clamped with a tightening force (a force larger than the tightening force of the coil spring 45 itself) according to the rotational force of the honing tool 80.

In the illustrated example, when the coil spring 45 is in the normal state (that is, in the maximum contracted state), the diameter dimension of the cylindrical chucking surface 47 has the outer peripheral surface Wb of the work W.
The diameter of the cylindrical chucking surface 47 is larger than the diameter of the outer peripheral surface of the work W and the coil storage 45 is expanded by the opening / closing part 46 described later. The diameter is set to be substantially the same as the diameter dimension of the cylindrical inner peripheral surfaces 43a and 43b of the portion 40. In addition, the size of these diameters (range)
Are, of course, set so as to satisfy the basic conditions described above.

The coil spring 45 has its winding base end portion 45a connected to the second swinging portion 31 on the fixed side, and its winding tip end portion 45b in the state of being stored in the ring storage portion 43c. Is connected to the holding base 40 on the rotating side.

Specifically, the holding base 40 is provided with a spring locking groove 50. As shown in the bottom view of FIG. 8 (a), the spring locking groove 50 has the spring accommodating portion 43c. Is a straight groove extending tangentially to the inner peripheral surface of the cylinder, and the depth dimension is as shown in Fig. 8 (b),
As shown in (c), the length is set equal to the axial length of the spring accommodating portion 43c. In addition, the second swinging portion 31 on the fixed side is provided with a spring locking groove 51 continuous with the spring locking groove 50, and a locking hole 52 is provided near the outer end thereof.

The winding base end portion 45a of the coil spring 45 is inserted and locked into the spring locking grooves 50 and 51, and the bent tip end portion is inserted into the locking hole 52. While the winding tip 45 is stopped.
b is inserted and locked in the spring locking groove 50.
As a result, the coil spring 45 is expanded / contracted, which will be described later, by the relative rotation of the second swinging part 31 and the holding base 40 by the opening / closing part 46.

The opening / closing portion 46 expands / contracts the coil spring 45, and includes an opening / closing ring member 55 and an operating member 5.
6 and a return spring 57 as main parts.

The opening / closing ring member 55 is integrally fixed to the upper half portion of the holding base 40 protruding upward from the second swinging portion 31. Thus, the opening / closing ring member 55 is pivotally supported together with the holding base 40 so as to be freely rotatable with respect to the second swinging portion 31 around the axis of the coil spring 45.

The operating member 56 is for rotating the opening / closing ring member 55, and is in the form of an operating lever projecting outward from the opening / closing ring member 55 in the horizontal direction, and is rotated by the chuck opening / closing device 4 described later. It In addition, in the illustrated case, as shown in FIG.
5, a pair of operating levers 56, 56 extending in the diameter direction
And the degree of freedom is given to the directionality of the arrangement of the honing jig J on the work transfer device 1.

The return spring 57 is formed by the opening / closing ring member 5
5 is elastically biased in the rotation direction, and one end 57
a is locked to the support pin 58 on the second swinging portion 31, and the other end 57b is locked to the operation lever 55. In the illustrated example, the opening / closing ring member 55
Is the direction of contraction and closure of the coil spring 45 (direction of normal position)
Has been urged to. Further, although not shown, a regulation structure that defines the rotation angle range of the opening / closing ring member 55 is provided, and the elastic biasing force of the coil spring 45 is prevented from deteriorating due to excessive expansion / contraction of the coil spring 45. .

Therefore, the tightening spring mechanism 41 is
The expansion / contraction operation is performed as follows by the chuck opening / closing device 4 described later.

The operation lever 56 of the opening / closing portion 46 is rotated by the chuck opening / closing device 4 in the chucking release direction (spring expansion direction) A against the biasing force of the return spring 57 (and the elastic force of the coil spring 45). When moved, the opening / closing ring member 55 and the holding base 40 integrated with the opening / closing ring member 55 also rotate in the chucking release direction A with respect to the second swing portion 31. As a result, the coil spring 45 expands and the cylindrical chucking surface 47 expands (see the chain double-dashed line in FIG. 9B).

In this expanded state, the diameter of the cylindrical chucking surface 47 of the coil spring 45 is, as described above, the cylindrical inner peripheral surfaces 43a, 43 of the work accommodating portion 40.
The diameter is substantially the same as the diameter of b (that is, larger than the diameter of the outer peripheral surface of the work W), and the work W can be inserted into and removed from the work storage portion 43.

When the force applied to the operating lever 56 by the chuck opening / closing device 4 is released, the biasing force of the return spring 57 (and the elastic force of the coil spring 45) causes the operating lever 56, the opening / closing ring member 55, and the holding member. The base 40 is pivotally returned to the second swinging portion 31 in the chucking direction B (spring contraction / closing direction), and along with this, the coil spring 45 is also rotationally returned to the normal position, and the coil spring 45 is returned to the normal position. The cylindrical chucking surface 47 is contracted.

In this case, when the work W is stored in the work storage portion 43, the coil spring 45 tightens the work W, and the cylindrical chucking surface 47 of the work W has the work W.
The rotation return operation (return) is stopped at a position closely following the outer peripheral surface Wb (see the solid line in FIG. 9 (b)).

As a result, the work W has its outer peripheral surface Wb.
Is held by the cylindrical chucking surface 47 of the coil spring 45 in a surface contact state. The chucking force in this case corresponds to the difference between the diameter of the cylindrical chucking surface 47 when the coil spring 45 is in the normal state and the diameter of the outer peripheral surface Wb of the work W.

Next, the above-mentioned other constituent devices of the automatic honing device equipped with the honing jig J configured as described above will be described with reference to FIGS. 10 to 16.

A. Work transfer device 1: Work transfer device 1
Is a carrier for transporting the honing jig J in accordance with a series of honing processes. The carrier path 20 constitutes a carrier path of the honing jig J, and a work carrier means for carrying the honing jig J along the carrier path 20. 60, and the positioning device 21 for positioning the honing jig J at predetermined positions.

As shown in FIG. 10, the transport path 20 starts from the workpiece loading / unloading position P corresponding to the chuck opening / closing device 4, and then the prepared hole detecting device 5, the first machining honing machine 6, and the first measuring device 7 are provided. After passing through the second machining honing machine 8 and the second measuring device 9, it is formed in a rectangular loop shape that returns to the work loading / unloading position P again.

Further, as shown in FIG. 1, the conveying path 20 is in the form of a guide rail having a guide groove 20a for guiding the honing jig J, and the honing treatment is provided in the middle of the path. Positioning devices for positioning the tool J are respectively provided.

That is, the detection position of the prepared hole detecting device 5, the machining position of each honing machine 6, 8 and the measuring position of the first measuring device 7, which are the straight line parts of the guide rail 20, are shown in FIG. As shown in FIG.
The positioning device 21 described above is provided at 0b.

Further, as shown in FIG. 11, the opening / closing operation position of the chuck opening / closing device 4, that is, the work loading / unloading position P and the measurement position of the second measuring device 9, which are the bent portions of the guide rail 20, are as shown in FIG. , A pair of lifting stoppers 22
Positioning devices 22 each including a and 22b are provided. Although not specifically shown, the elevating stoppers 22a and 22b are provided so as to be able to ascend and descend within the guide groove 20a of the guide rail 20 and are constantly urged in the ascending direction by a resilient spring (not shown). There is. Then, when the honing jig J is in the predetermined position, the upstream-side elevation stopper 22a and the upstream-side elevation stopper 22b respectively lock and hold the side portions of the jig base 15 as shown in FIG. Side wall 20
The honing jig J is positioned together with b and 20b. On the other hand, the honing jig J is provided with these stoppers 22a and 22b.
When passing over, the lifting stoppers 22a and 22b are elastically lowered by engagement with the jig base 15 to allow the honing jig J to pass.

The work transfer means 60 moves the honing jig J from the work loading / unloading position P to the entrance of the honing portion, that is, the detection position P of the prepared hole detecting device 5, as indicated by the arrow (1).
Transfer device 60 that conveys to exit P ₂ via ₁
a, a carry-out device 60b that conveys from the exit P ₂ to the first standby position Q as indicated by arrow (2), and a return device that conveys from the first standby position Q to the second standby position R as indicated by arrow (3) 60
2nd honing jig J as indicated by c and arrow (4)
The loading device 60d is configured to carry the work from the standby position R to the work loading / unloading position P, and each of these devices 60a-60
All d are hydraulic cylinders.

The transfer device 60a includes a plurality of (five in the illustrated example) honing jigs J, J, ..., The chuck opening / closing device 4, the prepared hole detecting device 5, the first machining honing machine 6, and the first measurement. The device 7, the second machining honing machine 8, and the second measuring device 9, that is, the outlet P _{2 of the} honing machine section.
Up to this, the drive is controlled so that the tact is continuously fed. The other devices 60a, 60c, 60d are drive-controlled so as to convey the honing jigs J one by one.
In addition, the respective constituent devices 60a to 60d of the work transfer means 60.
May be composed of an air cylinder instead of the hydraulic cylinder described above.

B. Parts feeder 2: Parts feeder 2
Is the receiving position S of the work loading / unloading robot 3 for the work W.
Specifically, the direction changing device 2a for changing the directions of the works W, W, ..., The separating device 2b for separating the works W, W, ... A posture changing device 2c for adjusting is provided. Then, the works W, W, ... Injected into the parts feeder 2 are changed in direction and separated by the respective devices 2a to 2b, and successively conveyed to the receiving position C, where The posture is adjusted, and the work loading / unloading robot 3 waits.

C. Work loading / unloading robot 3: The work loading / unloading robot 3 loads / unloads the work W to / from the honing jig J, and is arranged corresponding to the work loading / unloading position P of the work transfer device 1. This work loading / unloading robot 3 is, as shown in FIG.
And a work chuck 66.

The main body 65 of the apparatus is in the form of a swinging arm whose base end is swingably supported, and is capable of reciprocatingly swinging in the range of 90 ° in the horizontal direction by a drive source (not shown). .

In the illustrated structure, as shown in FIG. 10, two rocking arms 65, 65 are integrally arranged at an angle of 90 ° in the horizontal direction, and the left rocking arm 65 is a work piece. Between the receiving position S of the supply unit, that is, the parts feeder 2 and the work loading / unloading position P of the work transfer device 1, and the right swing arm 65 is provided with the work loading / unloading position P and the receiving position of the work sorting device 10. It is possible to reciprocally swing between U and U.

Specifically, the work chuck 66 is in the form of a collet chuck and is provided vertically downward at the tip of the swing arm 65. The work chuck 66 is vertically driven by a drive source (not shown) disposed in the swing arm 65. It is possible to move up and down. The tip chuck portion 66a of the work chuck 66 can be inserted into the inner peripheral surface Wa, which is a hole to be machined in the work W when the work chuck 66 is contracted and closed, and the inner peripheral surface Wa is opened from the inside when the work W is expanded. It is designed to be chucked.

Then, the work chuck 66 of the work loading / unloading robot 3 moves up and down and expands / contracts at the positions S, P, U to attach / detach the work W, and also between the positions S, P, U. The work W is conveyed in the horizontal direction while being chucked and supported, and the work W is loaded and unloaded simultaneously. That is, the right swing arm 65 carries out the processed work W from the honing jig J at the work loading / unloading position P to the receiving position U of the work sorting device 10, and at the same time, the left swing arm 65 moves. , Parts feeder 2
The work W before processing is carried into the honing jig J from the receiving position S of.

D. Chuck opening / closing device 4: The chuck opening / closing device 4 includes a tightening spring mechanism 41 for the honing jig J.
Are opened and closed to assist the work loading / unloading operation of the work W by the work loading / unloading robot 3, and are arranged corresponding to the work loading / unloading position P of the work transfer device 1.
As shown in FIGS. 11 and 12, the chuck opening / closing device 4 includes an opening / closing rod 70 and a reciprocating cylinder 71 as main parts.

The open / close rod 70 is attached and fixed to a cylinder body 76 as a moving body provided on the upper surface of the apparatus body 75. Specifically, a piston rod 77 as a guide rod extends horizontally over and is supported on the apparatus main body 75, and the cylinder main body 76 is slidable on the piston rod 77. The open / close rod 70 is attached to the cylinder body 76 via a mounting body 78, and is configured to reciprocate linearly in the horizontal direction along the piston rod 77.

Further, as shown in FIG. 12, the height arrangement relationship between the opening / closing rod 70 and the honing jig J is such that when the honing jig J is located at the work loading position P, the tip end pressing portion of the opening / closing rod 70 is described. The operating lever 56 of the tightening spring mechanism 41 is set so as to be located on the movement path of 70a. Further, in this case, when the opening / closing rod 70 is in the retracted position, as shown by the solid line in FIGS. 11 and 12, the tip pressing portion 70a is separated from the operation lever 56, and the opening / closing rod 70 moves forward. When in the position, as shown by the chain double-dashed line in the figure, the tip pressing portion 70a presses the operating lever 56 to rotate it to the spring expanded position.

The reciprocating cylinder 71 reciprocates the open / close rod 70. Specifically, the reciprocating cylinder 71 is composed of a hydraulic cylinder or an air cylinder. The reciprocating movement of the cylinder body 76 along the piston rod 77 opens and closes the cylinder. The rod 70 reciprocates linearly in the front-rear horizontal direction. Therefore, the moving stroke L of the opening / closing rod 70 is determined by the reciprocating stroke of the cylinder body 76.

When the honing jig J is in the work carrying-in position P, the forward movement of the opening / closing rod 70 of the chuck opening / closing device 4 causes the operating lever 56 to rotate in the spring expanding direction, thereby causing the cylindrical chuck to move. The king surface 47 is expanded and opened, while the opening / closing rod 70 is retracted to return the operation lever 56 to the spring contraction direction, whereby the cylindrical chucking surface 47 is contracted (chucking operation). To be done.

E. Honing machines 6, 8: 1st and 2nd
Specifically, the honing machines 6, 8 for machining are vertical ones as shown in FIG. 14, the former for rough machining and the latter for finishing. These honing machines 6 and 8 have a conventionally known structure, and include, for example, a rotary spindle 81 having a honing tool 80 at its tip, a spindle rotary drive unit 82, a spindle reciprocating drive unit 83, a grindstone drive unit 84, and a control unit 85. Prepared as a department. 86 indicates a power source.

The honing tool (so-called honing mandrel or honing head) 80 is a rotary spindle 8.
A plurality of honing grindstones 90, 9 which are attached to the tip of 1 in a replaceable manner and which are arranged to be expandable and contractible in the radial direction inside thereof.
0, ..., And a conventionally known expansion mechanism for expanding or restoring the same.

The rotary spindle 81 is provided with the honing tool 80 at its lower end, and the spindle rotary drive section 82 includes a drive shaft 91, a drive motor 92, etc., and the spindle reciprocating motion includes a slide body 95, a hydraulic cylinder 96, etc. Each of them is linked to the drive unit 83. That is, the rotary spindle 8
1 is rotatably supported by a slide body 95, and the slide body 95 is provided on a guide rod 98 extending in a vertical direction on the machine body 97 so as to be able to move up and down, and a hydraulic cylinder 96 attached to the machine body 97. Is connected to the piston rod 96a. Then, as the piston rod 96a of the hydraulic cylinder 96 moves up and down, the rotary spindle 81, that is, the honing tool 80 moves up and down via the slide body 95.

The upper end of the rotary main shaft 81 has a body 97.
The drive shaft 91 is rotatably provided on the head portion 97a of the drive shaft 91a by key fitting or spline fitting.
Are connected to each other so as to be relatively movable in the vertical direction (axial direction) and to be integrally rotatable.

A transmission pulley 99a is provided at the upper end of the drive shaft 91.
The transmission pulley 99a is connected to the transmission pulley 99b attached to the motor shaft of the drive motor 92 via the transmission belt 100. The rotary drive of the drive motor 92 causes the rotary spindle 81, that is, the honing tool 80 to be rotationally driven via the drive shaft 91.

The grindstone driving unit 84 is the honing grindstone 9 described above.
The cutting mechanism is provided for the 0, 90, ...

The cutting drive mechanism 105 has a conventionally well-known structure, and is connected to the motor shaft of the cutting motor 106 via a rotation transmission mechanism 107 provided in the head portion 97a of the machine body 97. The forward / reverse rotation driving of the cutting motor 106 activates the cutting driving mechanism 105 and the expansion mechanism in the honing tool 80,
The honing grindstones 90, 90, ... Are expanded or contracted.

A stepping motor is specifically used as the cutting motor 106 for driving and controlling the expansion / contraction amount of the honing grindstones 90, 90, ..., The rotation amount of which is determined by a position detector 108 such as a rotary encoder. To be detected.

The control unit 85 automatically controls the operations of the respective drive units of the honing boards 6 and 8 in conjunction with each other. Specifically, the control unit 85 includes a micro controller including a CPU, a ROM, a RAM and an I / O port. It consists of a computer.

A machining program for executing honing machining is incorporated in the control unit 85,
As shown in FIG. 15, a spindle control unit 85a, a spindle rotation control unit 85b that controls the spindle rotation drive unit 82, a spindle reciprocation control unit 85c that controls the spindle reciprocation drive unit 83, and a grindstone control that controls the grindstone drive unit 84. It is composed of a portion 85d and the like.

The main control unit 85a includes the above-mentioned drive units 82-
Various information necessary for driving 84 is set as NC (numerical control) data in advance or appropriately selected by a keyboard or the like, and each of the control units 85b to 85d is controlled in accordance with these data. In addition, each of these control units 8
5b to 85d include a drive motor 92 and a hydraulic cylinder 96.
In addition to the hydraulic control valve 96b, the cut-in motor 106, and the position detector 108, the position detector 95a for detecting the position of the slide body 95, and other drive units are electrically connected, and the actual obtained from them. Value information is
The main control unit 85a performs a comparison calculation with the various set values set in advance, and the operation of each of the drive units 82 to 84 is drive-controlled based on the calculation result.

The honing machines 6 and 8 configured as described above are arranged at an intermediate position of the work transfer device 1, and the drive units 82 to 84 are controlled by the control unit 85 as described below. The work W conveyed automatically by the work conveying means 60 is subjected to a predetermined honing process.

F. Prepared hole detecting device 5, measuring devices 7, 9: These devices 5, 7, 9 are the inner diameter of the inner peripheral surface Wa of the work W, that is, the inner diameter of the inner peripheral surface Wa before machining in the prepared hole detecting device 5 ( The inner diameter of the prepared hole is used to measure the inner diameter after processing (finishing inner diameter) in the measuring devices 7 and 9, and is specifically provided with an air micrometer. In this air micrometer, as shown in FIG.
1 is integrally attached to the tip of the spindle 11.
1 is capable of reciprocating in the axial direction of the inner peripheral surface Wa of the work W, that is, in the vertical direction.

The measuring head 110 has a cylindrical shape having an outer diameter smaller than the inner diameter of the inner peripheral surface Wa of the work W, and has air nozzles 110a and 110a for ejecting measuring air on the outer peripheral surface thereof. It is provided radially outward.

Then, with the measuring head 110 inserted in the inner peripheral surface Wa of the work W, the air nozzle 1
Measuring air is jetted from 10a and 110a, and the inner peripheral surface W
The inner diameter dimension of the inner peripheral surface Wa is measured from the pressure change of the measurement air due to the gap between the inner diameter surface of a and the outer peripheral surface of the measurement head 110.

[0093] In the illustrated example, the air inside diameter measured by a micrometer, as shown in FIG. 16, those of the plurality positions in the axial direction of the inner peripheral surface Wa (d ₁ ~d _n)
And in that these measured values d ₁ to d _n is sent to the arithmetic and control unit of the air micrometer (not shown), the inner diameter shape modes of the inner circumference Wa of the work W is comparison operation. And
In the prepared hole detecting device 5, it is judged from the calculation result whether or not the prepared hole inner diameter of the inner peripheral surface Wa of the work W is within the honing possible range, and the control signal based on the judgment result is the honing. It is sent to each control unit 85 of the panels 6 and 8 and the work selection device 10. Further, in the measuring devices 7 and 9, the above calculation results are fed back to the control units 85 of the honing machines 6 and 8, respectively, and the honing processing is performed based on the feedback. Further, the calculation results of the measuring devices 7 and 9 are the processing results of the work W to the work selection device 10 (OK signal for good products, NG signal for defective products).
Sent as

The measuring heads 110 of the measuring devices 7 and 9
However, the circularity of the inner peripheral surface Wa may be measured by being driven so as to rotate in addition to the reciprocating movement in the vertical direction.

G. Work selection device 10: The work selection device 10 is for selecting the processed work W carried out by the work loading / unloading robot 3, and detects a detection signal from the prepared hole detection device 5 (prepared hole NG signal) and a measuring device 7. , 9 (OK signal for good products, NG for defective products)
Signal) and perform a predetermined sorting operation.

Specifically, as shown in FIG. 10, the work selection device 10 includes a prepared hole NG box 10a, an NG box 10b, a non-defective chute 10c, and a guide mechanism for selectively guiding and controlling the work W to them. 10d is provided. The guide mechanism 10d is configured to load the work W into and out of the work loading robot 3
From the receiving position U, and when the pilot hole NG signal is received, the workpiece W is discharged to the pilot hole NG box 10a, and when the NG signal is received, the workpiece W is received.
When the OK signal is received, the work W is discharged to the non-defective chute 10c.

Although not shown, the OK signal from the second measuring device 9 is further subdivided, and the non-defective chute 10c is divided into a plurality of parts according to the type of the OK signal, and the work W is non-defective. In this case, a grade (rank) may be added to the dimensional accuracy, and the work W may be selectively discharged for each grade.

H. Control device 11: The control device 11 automatically controls the work transfer device 1 and each of the devices 2 to 10 arranged in the middle of the transfer path in cooperation with each other. Specifically, the control device 11 includes a CPU, a ROM, and a RAM. And a microcomputer including I / O ports and the like.

The control device 11 operates from the time when the honing jig J is transported to the work loading / unloading position P of the work transporting device 1 to the time when the honing jig J returns to the work loading / unloading position P after a predetermined honing process. A series of process programs are incorporated, and specifically, the operation timing of each of the devices 1 to 10 is preset as NC data or selectively input by a keyboard as appropriate, and each device 1 to 10 is set according to these data. 10 is sequence-controlled.

Next, honing processing using the automatic honing device configured as described above will be described with reference to FIG. The series of processing steps described below are executed in conjunction with each other according to the automatic control program of the control device 11.

I. Loading of the workpiece W: The workpieces W, W, ... Injected into the parts feeder 2 have their directions changed by the direction changing device 2a, then separated by the separating device 2b, and successively conveyed to the receiving position C. Then, the posture is adjusted by the posture conversion device 2c. And
At the receiving position C, the works W are chucked one by one by the work carrying-in robot 3, and the work carrying device 1
Is set in the work holder 17 of the honing jig J that stands by at the work loading / unloading position P.

The specific operation in this case is as follows. First, the chuck opening / closing device 4 expands the tightening spring mechanism 41 of the honing jig J to expand the cylindrical chucking surface 47 in the manner described above. Let With the cylindrical chucking surface 47 in the expanded state, the workpiece loading / unloading robot 3
The work W is inserted into the work storage portion 43 of the work holder 17 from above and stored. After that, the chuck opening / closing device 4 again causes the tightening spring mechanism 41 to operate in the same manner as described above.
Is closed and closed to close and close the cylindrical chucking surface 47, and the entire outer peripheral surface Wb of the work W is chucked and supported.

Accordingly, the work W is held by the floating structure of the honing jig J so as to be swingable in the three-dimensional direction.

II. Automatic honing of the work W: i) When the setting process of the work W on the honing jig J at the work loading / unloading position P is completed, the transfer device 6
0a operates to convey the honing jig J (hereinafter referred to as the work W) to the entrance P ₁ of the honing portion, that is, the detection position of the prepared hole detection device 5, and the positioning device 21 performs the positioning. The pilot hole detection device 5 is the work W
The inner diameter Wa of the inner peripheral surface Wa of the hole is detected in the above-described manner, and the detection result is sent to the control unit 85 of each honing machine 6, 8.

Ii) In this case, if the prepared hole inner diameter of the work inner peripheral surface Wa is within the honing possible range, the predetermined honing by the honing machines 6 and 8 is executed in the following manner. That is, the work W located at the entrance P ₁ is transferred by the transfer device 60a to the first machining honing machine 6 →
The first measuring device 7-> the second machining honing machine 8-> the second measuring device 9 is tact-fed, and the positioning device 21 positions each device, and the above-described predetermined steps are sequentially executed.

Iii) On the other hand, if it is out of the range, honing is not executed, and at the same time, the prepared hole NG signal is also sent to the work selection device 10.

II. Unloading of the work W: The work W carried to the exit P ₂ through a series of honing processing or without honing processing is carried out by the carry-out device 60b and the returning device 60.
It is sequentially conveyed by c and the carry-in device 60d and sent to the work carry-in / carry-out position P. Here, the chuck opening / closing device 4 and the work loading / unloading robot 3 cooperate with each other in the above-described manner to remove the work W from the work holder 17 of the honing jig J and carry it out to the receiving position U of the work sorting device 10. .

On the other hand, in the honing jig J from which the work W has been removed, the next work W is set at the work loading / unloading position P by the work loading / unloading robot 3 almost at the same time.

III. Sorting and discharging of the work W: The work sorting device 10 processes information about the work W carried out to the receiving position U, that is, a detection signal (prepared hole NG signal) from the prepared hole detection device 5 or a measuring device 7, 9 has previously received a measurement signal (OK signal for non-defective product, NG signal for non-defective product), and the guide mechanism 10d uses the information to prepare the work W in the prepared hole NG box 10 in the manner described above.
a, NG box 10b and non-defective chute 10c are selectively discharged.

In the automatic honing device configured as described above, however, the work W is carried in automatically and the work W is carried out after the completion of the honing process, thereby saving the labor of the honing process. In particular, since the honing jig J whose chucking operation is automated is adopted, the above series of steps can be fully automated without any human manual work.

When honing is performed by the honing machines 6 and 8, the work W is held by the honing jig J so as to be swingable in the three-dimensional direction and is in a floating state. Of the honing tool 80 is maintained well, and high-precision honing processing is guaranteed.

Further, in the work holder 17 of the honing jig J, when the work W is stored in the work storage portion 43, the cylindrical chucking surface 47 of the tightening spring mechanism 41 becomes the entire outer peripheral surface Wb of the work W. Since the circumference is chucked and supported, the mechanical structure for automation thereof is simple and small, and the chucking force of the workpiece W is less than that of the conventional fixed support structure using a fixed cap (see FIGS. 19 to 21). Setting management is also much easier.

Moreover, since the cylindrical chucking surface 47 of the tightening spring mechanism 41 chucks and supports the entire outer peripheral surface Wb of the work W (see FIG. 9 (a)).
Even with respect to the thin-walled cylindrical work W having no detent as shown in (3), the work W itself is securely held and fixed, particularly fixed in the rotational direction, without causing distortion.

Further, during the honing process, the rotational force of the honing tool 80 is transmitted to the work W, and the work W receives the rotational force (honing process resistance). However, the coil spring 45 of the tightening spring mechanism 41 is wound. As described above, the direction is set so that the inner diameter of the cylindrical chucking surface 47 is contracted and closed by the rotation of the honing tool 80.
5 is to perform tightening according to the rotational force of the honing tool 80.

That is, referring to FIG. 9 (a), when the honing tool 80 starts to rotate due to the start of the honing process, a rotating force gradually acts on the work W, and this rotating force acts on the outer peripheral surface of the work W. Due to the friction between Wb and the cylindrical chucking surface 47 of the coil spring 45, the coil spring 45 tries to rotate in the tightening direction. As a result, the coil spring 45 clamps the work W with a force corresponding to the rotational force of the honing tool 80.

Embodiment 2 This embodiment is shown in FIG. 17, in which the honing jig J, that is, the work W for carrying and positioning the work carrying device 1 is of index type.

That is, the work transfer device 1 is shown in FIG.
As shown in (a), the honing jigs J, J, ...
Is provided as a main part, and the indexing disk 120 is indexed and rotated by a drive source (not shown) such as a stepping motor.

Although not shown, around the indexing disk 120, in addition to the honing disk and the measuring device that constitute the work processing part, the above-mentioned parts feeder 2, work loading / unloading robot 3, chuck opening / closing device 4 or work sorting device. 10
Peripheral devices for loading and unloading workpieces are installed.

Correspondingly, the jig base 125 of the honing jig J has a disc shape as shown in FIG. 17 (b), and the jig base 125 has the jig base 125.
It is attached and fixed at a predetermined position of.

Thus, in the automatic honing device configured as described above, the honing jigs J, J, ... Attached to the indexing disk 120 are rotated by the above-mentioned drive source to rotate the indexing disk 120. While being rotated and conveyed along with each device and peripheral device of the work processing part,
The series of honing processes described above are performed on the works W that are indexed to the work loading / unloading position, the honing position, the measurement position, and the like corresponding to each of these devices, and are stored and held therein. Other configurations and operations are the same as those of the first embodiment.

The above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes are possible. As an example, the following modifications are possible.

(1) For example, regarding the honing jig J,
In the first and second embodiments described above, the cross-sectional shape of the wire rod of the coil spring 45 is rectangular, but the optimum cross-sectional shape is selected depending on the required processing accuracy and the like. A circular shape can also be adopted.

That is, in the above-described embodiment, since the target work W has a thin cylindrical shape, the cylindrical chucking surface 47 makes surface contact with the outer peripheral surface Wb of the work W and is evenly distributed over the entire outer peripheral surface Wb. A rectangular cross-section capable of obtaining a tightening force is desirable, while a thick-walled cylindrical work W preferably has a circular cross-section having a large returning force and a large tightening force with respect to the outer peripheral surface Wb. .

In this case, the coil spring 45 has the structure shown in FIG.
As shown in (c), a wire rod having a circular cross section is wound in a cylindrical shape in close contact with the axial direction, and the cylindrical chucking surface 47 is spirally wound around the entire outer peripheral surface Wb of the work W. Will come into contact.

(2) Further, the relative specific structure of the coil spring 45 and the opening / closing portion 46 is not limited to the example shown in the figure, and it goes without saying that another structure that performs the same operation can be adopted.

(3) Further, the specific structure of each device constituting the honing device can be changed without being limited to that shown in the drawings.

For example, in the above-described Embodiments 1 and 2, the measuring devices 7 and 9 are arranged in the stations independent of the honing machine, but these are the honing machines 6 and 8.
It may be configured to be integrated with (including the case of being in the same station) and to perform the measurement in-process. Further, a plug gauge (not shown) may be provided instead of the measuring head 110 of the air micrometer shown in FIG.

Further, the work W may be carried in and out alternately, or may be carried out at separate and independent positions. In this case, in the former case, the work W is carried in and out by one swing arm 65, while in the latter case, there is a carry-in or carry-out robot dedicated to carrying in and out the work. They are arranged independently of each other, and corresponding to these dedicated robots,
Two chuck opening / closing devices 4 are also arranged correspondingly.

The specific structure of the chuck opening / closing device 4 itself can be changed in design in consideration of the relative relationship with the opening / closing portion 46 of the honing jig J.

(4) Further, the shape of the work W to be subjected to honing processing is not only the thin-walled cylindrical shape as shown in FIG. 18, but also the thick-walled cylindrical shape described above, or another non-rotating shape. Other shapes that are difficult to hold, such as
A work having an outer peripheral surface to which the cylindrical chucking surface 47 of the coil spring 45 can be applied can be applied to various shapes.

[0131]

As described in detail above, the honing jig of the present invention holds a cylindrical work and is carried by the work carrying device of the automatic honing device.
A jig base movably mounted on the conveyance path of the work conveying device, an oscillating body provided on the jig base so as to be able to oscillate in a three-dimensional direction, and a work holder provided on the oscillating body. Since the work holder is provided with a tightening spring means having a cylindrical chucking surface for detachably chucking and supporting the entire outer peripheral surface of the work, a device for easily mounting and removing the work on a cylindrical work is provided. This makes it possible to automate.

That is, in the conventional fixed support structure using the fixed cap, the structure of the automatic attachment / detachment device for the fixed cap h is very complicated and large in size, and the torque management for the tightening force is also required, which results in high cost. Although it is theoretically not possible to employ it in practice, complete automation has not been realized, but in the fixing structure by the tightening spring means as described above, compared to the conventional fixed support structure, The machine structure for can be made simple and small, the setting control of the chucking force for the work can be remarkably facilitated, and the work can be easily attached and detached by a device.

Further, since the chucking surface of the tightening spring means chucks and supports the entire outer peripheral surface of the work, the work itself may have a simple cylindrical shape without any protruding portion in the lateral direction. Regardless of the wall thickness, the holding and fixing, especially the fixing in the rotation direction is reliable, and the work itself is not distorted. As a result, it is possible to easily and inexpensively realize the complete automation of the honing process even for a cylindrical work having no detent that has been impossible in the past.

Further, according to the automatic honing device of the present invention, the honing jig and the chuck opening / closing device for opening / closing the honing jig are provided, and the control device controls the chuck opening / closing device, the work transfer device, and the work loading / unloading device. Since the honing machine and the measuring device are configured to be automatically controlled in conjunction with each other, the above-mentioned effects of the honing jig are fully exerted, and the process from the loading of the work to the unloading after the honing is completed. It is also possible to automate the sorting work after that, and in the honing process, it is possible to achieve complete automation without human intervention and labor saving.

[Brief description of drawings]

FIG. 1 is a plan view showing a honing jig for an automatic honing device according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing the honing jig substantially along the line II-II in FIG.

FIG. 3 is a vertical sectional view showing the honing jig substantially along the line III-III in FIG. 1.

FIG. 4 is a perspective view showing a state in which the honing jig is incised substantially along line IV-IV in FIG. 1.

FIG. 5 is a vertical sectional view showing a work holder of the honing jig.

FIG. 6 is an enlarged vertical sectional view showing a main part of the work holder.

FIG. 7 is a perspective view from below showing a state before assembling the holding base, which is a main part of the work holder, and the coil spring of the tightening spring mechanism.

FIG. 8 shows the same holding base, FIG. 8 (a) is a bottom view, and FIG.
8B is a left side view, FIG. 8C is a right side view, and FIG. 8D is a vertical sectional view taken along the line VIII-VIII in FIG. 8A.

FIG. 9 is a theoretical explanatory diagram of a chucking structure of a workpiece by a coil spring of the work holder.
9A is a plan view showing the relationship between the coil spring winding configuration and the honing tool rotation direction, and FIG. 9B is FIG. 9A.
9 is a vertical sectional view taken along line IX-IX in FIG. 9, and FIG. 9C is a vertical sectional view corresponding to FIG. 9B in another modification of the coil spring.

FIG. 10 is a plan view showing a schematic configuration of an automatic honing device including the honing jig.

FIG. 11 is a plan view showing a relationship between a honing jig and a chuck opening / closing device in the automatic honing device.

FIG. 12 is a side view showing the relationship between the honing jig and the chuck opening / closing device in a partial cross section.

FIG. 13 is a side view showing a partial cross-section of the relationship between the honing jig and the workpiece loading / unloading robot in the automatic honing device.

FIG. 14 is a schematic configuration diagram showing a partial cross section of a honing machine of the automatic honing device.

FIG. 15 is a block diagram showing a configuration of a control unit of the honing machine.

FIG. 16 is a vertical cross-sectional view showing a main configuration of a measuring device of the automatic honing device.

FIG. 17 shows another embodiment of the automatic honing device according to the present invention, FIG. 17 (a) is a plan view showing a schematic configuration of an index type work transfer device, and FIG. 17 (b) shows the same work transfer device. It is a top view which shows the honing jig installed.

FIG. 18 shows a thin-walled cylindrical workpiece to be machined by the automatic honing device according to the present invention. FIG. 18 (a) is a plan view and FIG. 18 (b) is a line XVIII-XVIII in FIG. 18 (a). It is a longitudinal cross-sectional view along.

FIG. 19 is a plan view showing a conventional honing jig.

FIG. 20: Similarly, the conventional honing jig is replaced with XX-X in FIG.
It is a longitudinal cross-sectional view shown along the X-ray.

FIG. 21 is the same conventional honing jig as XXI-XX in FIG.
It is a longitudinal cross-sectional view shown along the line I.

[Explanation of symbols]

W Work Wa Work inner surface Wb Work outer surface J Honing jig 1 Work transfer device 2 Parts feeder 3 Work loading / unloading robot (work loading / unloading device) 4 Chuck opening / closing device 5 Pilot hole detection device (measuring device) 6, 8 Honing machine 7,9 Measuring device 10 Work selection device 11 Control device 15,125 Jig base 16 Oscillating body 17 Work holder 20 Conveying path 21 Positioning device 22 Positioning device 30 First oscillating part 31 Second oscillating part 34 X -Cross pin 35 Y-Cross pin 40 Holding base 41 Tightening spring mechanism (tightening spring means) 43 Work storage part 43d Positioning part 45 Coil spring 45a Coil spring winding base end part 45b Coil spring winding end part 46 Opening / closing part 47 Cylindrical Chucking surface 55 Opening / closing ring Material 56 operating lever (operating member) 57 return spring 60 reciprocating cylinder 80 the honing tool 120 indexing disc closing rod 71 chucking opening and closing device of a work conveying means 70 chucks switchgear

Claims (16)

[Claims] 1. A jig base which holds a cylindrical work and is carried by a work carrying device of an automatic honing device, and which is movably mounted on a carrying path of the work carrying device. The jig base is provided with an oscillating body provided so as to be capable of oscillating in a three-dimensional direction, and a work holder provided on the oscillating body. A honing jig, characterized by comprising a tightening spring means having a cylindrical chucking surface for chucking support possible. 2. The oscillating body comprises a first oscillating portion and a second oscillating portion, and the first oscillating portion is hung and oscillated on the jig base via an X-cross pin. The second oscillating portion is movably provided, and the second oscillating portion is orthogonal to the X-cross pin.
The work holder is provided in a suspending and swingable manner on the first swinging portion via a cross pin, and the work holder is provided at a central portion of the second swinging portion. Honing jig described in. 3. The work holder includes a cylindrical work storage portion for storing a work, and the work storage portion has a cylindrical work storage portion.
The honing jig according to claim 1 or 2, wherein the tightening spring means are arranged coaxially. 4. The tightening spring means comprises a cylindrical coil spring having the cylindrical chucking surface in its inner diameter portion, and an opening / closing portion for expanding / contracting the cylindrical chucking surface of the coil spring. The honing jig according to any one of claims 1 to 3. 5. The coil spring has a winding base end portion connected to a fixed side and a winding tip end portion connected to the opening / closing portion, and a winding direction of the coil spring by the opening / closing portion. The honing jig according to claim 4, wherein the cylindrical chucking surface is configured to expand and contract by a deforming operation to. 6. The opening / closing unit includes an opening / closing ring member pivotally supported by the second swinging unit so as to be freely rotatable around an axis of the coil spring, and the opening / closing ring member elastically elastically in the rotation direction. The coil spring comprises a return spring for urging and an operating member for rotating the opening / closing ring member, and the coil spring has a winding base end portion connected to the second swinging portion on the fixed side, The honing jig according to claim 5, wherein the winding tip portion is connected to the rotating side opening / closing ring member. 7. The coil spring is formed by winding a wire rod having a rectangular cross section in a cylindrical spiral shape in close contact with the axial direction, and the cylindrical chucking surface makes surface contact with the entire outer peripheral surface of the workpiece. The honing jig according to claim 5, wherein the honing jig is configured as follows. 8. The coil spring is formed by winding a wire rod having a circular cross-section in a cylindrical spiral shape in a state in which the wire material is closely contacted in the axial direction, and the cylindrical chucking surface is spirally formed around the entire outer peripheral surface of the workpiece. The honing jig according to claim 5, wherein the honing jig is configured to be in line contact. 9. The honing treatment according to claim 7, wherein the winding direction of the coil spring is set so that the cylindrical chucking surface of the coil spring is contracted and closed by the rotation of the honing tool. Ingredient 10. The coil spring, in a normal state, has a cylindrical chucking surface whose diameter is set to be smaller than a diameter of an outer peripheral surface of a workpiece, and is expanded by the opening / closing portion. 6. The honing jig according to claim 5, wherein the diameter of the cylindrical chucking surface is larger than the diameter of the outer peripheral surface of the workpiece, and is set to be substantially the same as the diameter of the work storage portion. . 11. The honing jig according to claim 3, wherein a positioning portion that defines an axial position of the workpiece is formed on a bottom portion of the work storage portion. 12. A honing jig according to any one of claims 1 to 11, a work transfer device that transfers and positions the honing jig along a honing processing section, and a work transfer device of the work transfer device. A chuck opening / closing device which is arranged at a carry-out position to expand / contract the tightening spring means of the honing jig, and which is arranged at a work carry-in / carry-out position of the work carrying section,
A work loading / unloading device for loading and unloading a workpiece with respect to the honing jig;
At least one honing machine for honing a workpiece conveyed by the workpiece conveyor, at least one measuring device arranged at a measurement position of the workpiece conveyor to measure a machining diameter of the workpiece, An automatic honing device comprising a work transfer device, a chuck opening / closing device, a work loading / unloading device, a honing machine, and a control device for automatically controlling the measuring device in conjunction with each other. 13. The work transfer device includes a work transfer path provided in a loop along a honing processing section, a transfer means for transferring the honing jig on the work transfer path, and a transfer means for transferring the honing jig. The automatic honing device according to claim 12, further comprising a positioning device that positions the honing jig at the work loading / unloading position, the honing processing position, and the measurement position. 14. The work transfer device comprises an indexing disk rotatably provided along a honing processing section, and the honing jig mounted on the disk is installed at the work loading / unloading position, 13. The automatic honing device according to claim 12, wherein the automatic honing device is of an index type for indexing and conveying to a honing processing position and a measurement position, respectively. 15. The chuck opening / closing device reciprocates the opening / closing rod that reciprocates linearly in the horizontal direction to releasably engage with the operating member of the tightening spring means of the honing jig. A reciprocating cylinder is provided, and the operating member of the opening / closing portion of the honing jig is in the form of an operating lever protruding outward in the horizontal direction from the opening / closing ring member, and the operating lever is rotated by the opening / closing rod. 13. The automatic honing device according to claim 12, wherein the opening / closing ring member is rotated. 16. The automatic honing device according to claim 12, further comprising a work selection device that selects the processed workpiece carried out by the work loading / unloading device.