JPH0615546A - Working machine and suitable work holder used therefor - Google Patents

Abstract

PURPOSE:To provide a working machine that shortens a span of downtime in time in operation of this machine as short as possible and makes any setup work for corresponding to plural types of works unnecessary and machining efficiency in the work improvable. CONSTITUTION:In a working machine which conveys an almost disk-like, columnar or cylindrical form work on a conveyor route, feeding it to a holder 20 one after another, and holds the work at this holder 20 while rotating it with a work axis as the center, and makes a working unit 26 contact or separate to or from the work and then machines a peripheral part of the work, it is provided with a positioning means 12 for positioning the work on the work conveyor route in advance, and a feeder 14 for feeding the holder 20 with the work in making the work axis almost in accord with a turning center of this holder 20, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing machine and a suitable work holding device used therefor.

[0002]

2. Description of the Related Art According to a conventional processing machine, a work is positioned at a predetermined position and then fixed by a chuck device, and the work device for processing the work and the chuck device are relatively moved to process the work. is doing. For example, in the case of a grinding machine that grinds the outer peripheral surface of a disk-shaped work formed by casting, first, the work is placed on a chuck device arranged at the grinding position of the work, It is supplied by the supply device up to the position regulated by the butting portion. Then, the work placed on the chuck device is positioned. The chuck device is rotatably provided by the rotating device for processing the entire circumference of the disk-shaped work, and thus the entire circumference of the work can be directed to the rotary grinding tool. Therefore, the positioning of the work on the chuck device is performed so that the axis of the work and the rotation axis of the rotating device match.

In order to perform the positioning of the work, each abutting portion and jig formed in conformity with the shape of each type of work are used. In this way, the workpiece that has been positioned is brought into contact with and held by the plurality of claw members and the like provided in the chuck device. Then, the grinding device and the chuck device holding the work relatively move to grind the work appropriately. After the work is ground, the holding of the work by the chuck device is released, the work after grinding is discharged by the discharging means, and the unworked work is supplied onto the chuck device by the supply device.

[0004]

According to the above-mentioned conventional grinding machine, it is possible to grind the outer peripheral surfaces of the same type of disk-shaped works one after another. However, in this grinding machine, the centering of the work on the holding device
Since it is performed by using the abutting part and jig that are formed according to the shape of the work, it is not possible to grind continuously one after another when the work of a similar type with different types is mixed. It was Therefore, in this grinding machine, it is necessary to change the setting of the positioning of the abutting portion or the like for each type of work, and it is necessary to strictly control the type of work. Further, according to the above conventional grinding machine, it is necessary to sequentially perform the steps of supplying the work, positioning and holding the work, grinding the work, and discharging the work for each work, Particularly, while the work is positioned on the holding device, the grinding device is stopped, so that the work is not efficiently ground.

Therefore, an object of the present invention is to shorten the down time during processing of the processing apparatus as much as possible, and
It is an object of the present invention to provide a machining machine that can improve the machining efficiency of a workpiece without the need for setup work for handling a plurality of types of workpieces.

[0006]

In order to achieve the above object, the present invention has the following constitution. That is, the present invention is
Workpieces having a substantially disk shape, a cylindrical shape, or a cylindrical shape are conveyed on the work conveyance path and are successively fed to the holding device,
In a processing machine for holding a fed work by a holding device and rotating the work about an axis thereof, and processing the outer periphery of the work by relatively moving the processing device toward and away from the work, A processing machine comprising a positioning device for performing positioning in advance on a transfer path, and a feeding device for feeding the work to the holding device with the axis of the work substantially aligned with the rotation center of the holding device. is there.

In the above processing apparatus, when the unprocessed work positioned by the positioning means is supplied to the processing position by the feeding device, the preceding work which has been processed is pressed to be discharged from the processing position. In addition, since the pressing member is provided on the positioning means so as to project in the feed direction of the work, the supply and the discharge of the work can be simultaneously performed by one drive mechanism.

Further, the positioning means includes a plurality of positioning members which are arranged so as to reciprocate toward the center and contact the work to position the work. It is possible to position a plurality of types of works having different circumference diameters, and the work can be supplied to the holding device in a positioned state.

Further, in this processing apparatus, the holding device is provided so as to be reciprocally movable in the axial direction of the held work, and the work is provided so as to be capable of reciprocating in the axial direction of the work while facing the holding device. By including a holding member sandwiched between the holding device and a reciprocating device that reciprocates the holding device and the holding device in the axial direction of the work, even when a plurality of types of works are mixed, The work can be reliably held at a desired position corresponding to each work.

Further, in order to process the work, in a holding device that holds the work at a predetermined position by a holding portion that contacts the work and holds the work, when the holding device holds the work, the holding device holds the work. The part projects from the placement surface of the placement member of the holding device on which the work is placed, contacts the work while holding the work, and when the work is supplied onto the placement surface or on the placement surface. When discharged from
The holding part and the mounting member are provided so as to reciprocate relative to each other so that the holding part releases the holding of the work and retracts below the mounting surface, so that the work is slid and easily supplied. And can be discharged.

[0011]

According to the processing machine of the present invention, the holding device preliminarily positions the workpiece on the conveying path by the positioning means so that the axis of the workpiece substantially coincides with the center of rotation of the holding device by the feeding device. Sent to. In this way, the work is fed to the holding device, and at the same time, the workpiece is positioned in the holding device. Therefore, it is possible to improve the machining efficiency without suspending the operation of the machining apparatus for the time of positioning the work. Further, when the work is fed to the holding device, the work is fed by the feeding device so that the rotation center of the holding device and the axis of the work coincide with each other. Therefore, it is possible to reliably supply the workpieces of different types to the rotary shaft of the holding device.

Further, according to the work holding device of the present invention, when the holding device holds the work, the holding portion is
The work can be held while protruding from the placement surface of the placement member of the holding device on which the work is placed and abutting the work. Further, when the work is supplied to the placement surface or discharged from the placement surface, the holding portion can release the holding of the work and pull the work below the placement surface. Therefore, if this work holding device is used for the processing device, the work can be slid and easily fed and discharged, and the processing efficiency can be improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a plan view showing an entire apparatus of a grinding machine which is an embodiment of a processing machine according to the present invention, and FIG. 2 is a side view in which a supply unit for a work holding device in FIG. 1 is omitted. As shown in FIG. 1, reference numeral 10 denotes a supply conveyor, which can sequentially send the work to a positioning position on a conveyance path where the positioning device 12 positions (centers) the work. The workpiece positioned by the positioning device 12 is the positioning device 12
In the state of being held by, the feeding reciprocating device 14, which is a feeding device connected to the positioning device 12, sends the work to the machining position 20a.

The work is held by the holding device 20 provided at the processing position 20a. The holding device 20 is rotatably provided by a rotary member 24, and the rotary member 24 is rotated by a rotary drive device. Reference numeral 26 denotes a grinding device, which is provided with a rotary grinding tool 28 capable of abutting the work located at the processing position 20a and grinding the work. The grinding device 26 is disposed adjacent to the work supply path, and is provided so as to be movable in and out of contact with the work held by the holding device 20 by the contact and separation mechanism 34.

Reference numeral 18 denotes a pressing member, which is a positioning device 12
When the unprocessed workpiece is supplied to the machining position 20a by the feed reciprocating device 14, the preceding workpiece that has been machined at the machining position 20a is pressed to push the workpiece from the machining position 20a. Can be discharged.
Reference numeral 30 denotes a discharge conveyor, which can discharge the work discharged from the processing position 20a to the outside by the pressing member 18.

As shown in FIG. 2, reference numeral 42 denotes a pressing member, which can press the work held by the holding device 20 from above to fix the work. As a result, the work can be sandwiched and held from above and below, so that the work can be securely held so as to prevent the work from vertically swinging. The portion of the pressing member 42 that comes into contact with the work is provided rotatably around the axis so that it rotates with the rotation of the work. Reference numeral 40 denotes a reciprocating device of the holding device, and the holding device 20
Can be reciprocated in the vertical direction. By the reciprocating device 40 of the holding device, the rotating device 22 having the rotating member 24 rotatably provided can be moved up and down. Reference numeral 44 denotes a grinding measurement sensor, which can confirm whether or not the work is properly ground. Therefore, when the work is not ground in a predetermined manner, the grinding measurement sensor 44 moves the rotary grinding tool 28 in the approaching / separating direction with respect to the work.
It is instructed to operate the contact / separation mechanism 34 of the grinding device 26.

Further, a grinding device 2 equipped with a rotary grinding tool
In the contacting / separating mechanism 34 of No. 6, a reciprocating member 37 is reciprocally fitted to a shaft-shaped contacting / separating guide 36 whose axes are arranged parallel to each other. It is provided so that it can be moved toward and away from it by a separation drive device 38. The rotary grinding tool 28 is driven by the power of the grinding drive motor via the rotary belt.

FIG. 3 shows a positioning device 12, a feed reciprocating device 14, and a vertical moving device 16 for moving the positioning device 12 up and down.
FIG. 4 is a side view illustrating details of an embodiment of a pressing member 18 that presses a work and discharges the work from the processing position.
3 is a plan view of FIG. 3, and FIG. 5 is a plan view illustrating details of the positioning device 12. As shown in FIG. 5, the positioning device 12 includes a pair of first reciprocating members 58 and a pair of second reciprocating members that are provided on a pair of shaft-shaped centering device guides 56 fixed in parallel to the base member 54. 59 is reciprocally slidable. The pair of first reciprocating members 58 are connected by a first driving member 60, and each first reciprocating member 58 is connected.
In addition, the first centering member 62 is projected and fixed in the feed direction of the work. Similarly, the pair of second reciprocating members 59 are connected by a second driving member 61, and each second
A second centering member 63, which is shorter than the protruding length of the first centering member 62, is projected and fixed to the reciprocating member 59 in the workpiece feeding direction.

Further, one end of a first drive link 66 is rotatably attached to the first drive member 60, and one end of a second drive link 67 is rotatably attached to the second drive member 61. It is worn. The other end of the first drive link 66 and one end of a rotary link 68 rotatably provided in the central portion of the fixed shaft 69 of the base member 54 are rotatably attached to the second shaft. The other end of the drive link 67 and one end of the rotation link 68 are rotatably attached to the shaft. Further, a connecting member 70 is connected to the first drive member 60, and the connecting member 70 is connected to the tip of the rod of the cylinder device 72 of the centering device fixed to the base member 54.

Therefore, the cylinder device 72 of the centering device
When the rod of 1 contracts, the first driving member 60 moves in the direction opposite to the workpiece feeding direction via the connecting member 70,
The second drive member 61 moves in the work feed direction via the drive link 66, the rotation link 68, and the second drive link 67. As a result, the pair of first centering members 62 connected to the first driving member 60 via the pair of first reciprocating members 58 moves in the direction opposite to the workpiece feeding direction, and the second driving member 61 is moved. The pair of second centering members 63 connected via the pair of second reciprocating members 59 move in the workpiece feeding direction.

In this way, the pair of first centering members 6
By moving the second centering member 63 and the pair of second centering members 63, the first centering roller 64 and the second centering member 63 are rotatably provided at the tip of the first centering member 62. The freely provided second centering roller 65 can evenly contact the outer periphery of the disk-shaped work from four directions to center the work. At this time, since the first centering roller 64 and the second centering roller 65 move symmetrically toward the axis of the work, even when centering a plurality of types of works, the axes of the respective works The work can be centered so that the center is always located at a predetermined position. In addition, in FIG. 5, as an example when the first reciprocating member 58 moves along the guide 56 of the positioning device,
The position where the end face of the first reciprocating member 58 is located is 58a.
The position where the end face of the second reciprocating member 59 is located is shown by 59a, and the position of the connecting member 70 is shown by 70a.
Indicate. The position of the first centering roller 64 at this time is set to 64.
The position of the second centering roller 65 is indicated by 65a. Further, in FIG. 5, the pressing member 18 connected to the positioning device 12 is shown by a chain double-dashed line.

The above-mentioned positioning device 12 is connected to a vertical movement device 16 of the positioning device, as shown in FIG. The vertical movement device 16 of the positioning device vertically moves the entire positioning device 12 in a section guided by two vertical movement guides 74 arranged in parallel in the vertical direction by the driving force of the vertical movement cylinder device 76. Can be moved. Further, the vertical movement device 16 of the above positioning device is
As shown in FIG. 4, it is connected to the feed reciprocating device 14. The feed reciprocating device 14 includes a feed cylinder device 80 so that the feed reciprocating member 79 can reciprocate in a section guided by two feed reciprocating guides 78 fixed to the base 71 in parallel with the horizontal direction. The driving force of the positioning device 12 and the vertical movement device 16 of the centering device.
Can be reciprocated horizontally. By the operation of the feed reciprocating device 14, the work is
The work can be supplied to a predetermined processing position of the work while being centered by the positioning device 12. In this embodiment, the disk-shaped work is centered by the positioning device 12. However, the positioning device 12 changes the member that abuts on the work and positions it depending on the shape of the work. It can also be used when the work is always positioned at a substantially constant position.

Further, as shown in FIG. 3 and FIG.
Is a work receiving member, and a work device which has reached a predetermined position by the supply conveyor roller 84 of the supply conveyor 10 which is a supply device can be lifted up so as to be separated from the supply conveyor roller 84. It is connected to the dynamic drive device 86. By sliding the work on the horizontal surface of the work receiving member 82, the work can be properly guided and sent to a predetermined processing position.

FIG. 6 is a sectional view for explaining the construction of the holding device 20 and the rotating device 22 which hold the work of the processing apparatus shown in FIG. 1 at the processing position. According to this holding device 20,
The chuck member 88, which is a holding unit, can contact the work placed on the placement member 90 to hold the work.
Further, the holding device 20 can rotate the work by the rotation of the rotating member 24 rotated by the rotating device.

The mounting member 90 is connected to the reciprocating drive device 128 fixed to the base portion 96 via the connecting portion 94 of the rod by the connecting member connecting shaft 92 extending downward in FIG. The connecting shaft 92 of the mounting member is rotatably fitted in the shaft center of the rotating member 24.
As shown in FIG. 7, a work placement surface 98 having a flat upper surface on which a work can be placed is formed on the upper portion of the placement member 90. The mounting member has a recessed portion 100 that is recessed so that the chuck member 88 can be positioned. Further, guide portions 102 for guiding the chuck member 88 to rotate are provided on both sides of the recessed portion 100 of the mounting member.
The guide portion 102 is formed with a guide groove portion 106 with which the guide protrusion portion 104 of the chuck member 88 is engaged.
As shown in FIG. 6, the shape of the guide groove portion 106 is such that the lower end thereof is open so that the guide protrusion portion 104 can enter, the groove portion is provided in the vertical direction in the lower portion, and the mounting member 9 is provided in the upper portion.
The groove portion is recessed at a predetermined angle in the outer peripheral direction of 0.

The chuck member 88 is inserted into each of the recessed portions 100 of the above-mentioned three mounting members, and the chuck member provided on the upper rotating member 107 fixed to the rotating member 24 of the rotating device 22 is rotated. A lower end is rotatably provided on the shaft 108, and the guide groove portion 1 is provided in the middle portion as described above.
A guide protrusion 104 that engages with 06 is provided.
A chuck contact portion 110 is formed on the upper end of the chuck member 88 so as to contact the work and hold the work. According to the chuck member 88, the mounting member 90 moves downward, whereby the guide protrusion 1
04 is moved along the guide groove 106. That is,
The mounting member 90 changes from the state shown in FIG. 8 (A) to that shown in FIG. 8 (B).
As shown in FIG. 7, the chuck members 88 provided at three locations move in the direction of expanding the diameter as shown in FIG. By the movement of the three chuck members 88, the three chuck abutting portions 110 provided at the tips of the chuck members abut the inner peripheral side wall surface of the work with a substantially uniform force to lock the work from the inside. By doing so, the work can be held while being centered.

As shown in FIG. 8B, an example of a disk-shaped work 1 is shown by a chain double-dashed line. The disc-shaped work 1 is a disc used for a disc brake, and has a circular projecting portion in the upper portion of the drawing and a circular recess portion in the lower portion. The disk-shaped work 1 is held by the three chuck members 110 contacting the inner peripheral side wall surface of the circular concave portion with substantially equal force. Further, since the chuck member 88 is inserted into each of the recessed portions 100 of the above-described three mounting members, the rotating member 24.
When the rotating member rotates, the mounting member 90 rotates together with the rotating member 24.

The rotating member 24 is the reciprocating device 4 of the holding device.
It is rotatably arranged via a bearing 114 on a base 112 that is vertically movable by zero. In addition,
Reference numeral 116 is a seal member. The rotating member 24 has a worm wheel 11 in which the driving force of a worm 116 that is rotationally driven by a motor or the like is provided coaxially with the rotating member.
It is rotated by being transmitted to 8.

The rod connecting portion 94 for connecting the connecting member connecting shaft 92 and the reciprocating drive rod 120 has:
The rotation preventing protrusion 122 is provided so as to protrude on the outer peripheral surface. The rotation prevention protrusion 122 is regulated by a slide guide 124 provided inside the base so that it can slide only in the vertical direction and the connecting portion 94 of the rod does not rotate. Therefore, the rod 120 of the reciprocating drive device connected to the connecting portion 94 of the rod is
It can be expanded and contracted in the vertical direction without rotating.

Further, in the rod connecting portion 94, a retaining locking portion 126 formed in a brim around the connecting shaft 92 of the mounting member is sandwiched by two upper and lower bearings 114, and the mounting member The connecting shaft 92 of the mounting member connects the rod 120 of the reciprocating drive device 128 so that the connecting shaft 92 does not come out of the connecting portion 94 of the rod. The retaining locking portion 1 provided on the connecting shaft 92 of the mounting member
Since the bearing 26 is in contact with two upper and lower bearings, the mounting member 90 can rotate with respect to the connecting portion 94 of the stationary rod.

According to the holding device 20 having the above structure, the chuck member 88 operates so as to project from the surface of the mounting member 90 on which the work is mounted and spread in the outer peripheral direction of the mounting member 90. Can be held. When the work is supplied and discharged, the chuck member 88 enters the mounting member 90, and the mounting member 90 is reciprocally driven so that the work mounting surface 98 of the mounting member 90 becomes flat. It can reciprocate up and down by the driving force of the device 128. Further, the work held by the holding device 20 can be rotated by the rotating device without rotating the rod 120 of the reciprocating drive device.

Reference numeral 130 denotes a rotating portion cover, which is provided on the upper portion of the rotating member 24 to protect the sliding portion between the base 112 and the rotating member 24 from abrasion and the like due to the entry of grinding dust and the like. . Reference numeral 132 denotes a mounting portion cover, which connects the mounting member connecting shaft 92 and the upper rotating member 24.
It is provided to protect the sliding parts and the like. Further, in order to smooth the rotational movement, the bearing 114 is arranged at a predetermined position, and the seal member 134 is arranged at a predetermined position so that the sliding portion is not exposed to the outside.

Next, the operation of the grinding machine of this embodiment will be described. The movement and the stop of the works are controlled so that the works conveyed one by one by the supply conveyor 10 are supplied to the work positioning position 12a one by one by the stopper unit 11 which is synchronized with the driving of the grinding device 26. ing. When the work is supplied below the positioning device 12 on the supply conveyor 10, the work receiving member 82 shown in FIG. 3 is lifted by the vertical movement drive device 86, and the work is separated from the supply conveyor roller 84.

Next, the work placed on the work receiving member 82 is centered by the positioning device 12. At this time, the positioning device 12
Is the first of the two that move in the direction opposite to the work feed direction.
Centering member and two second moving in the workpiece feed direction
Each of the centering member and the centering member operates so as to move close to the center of the positioning position 12a under the same condition. Therefore, even when a plurality of types of works in which the diameter of the portion abutted by the centering member is different within a predetermined range is supplied, the shaft center of each work is positioned at the center of the centering position. The core of the work can be taken out.

Then, while the work is still positioned by the positioning device, the feed reciprocating device 14 operates to send the work to the holding device 20 arranged at the processing position 20a. At this time, since the work is positioned by the positioning device 12,
When the work is sent, the rotation axis of the work and the rotation axis of the holding device rotatably provided by the rotation device are aligned with each other. At this time, the chuck member 88 is moved from the mounting surface 98 of the mounting member 90 constituting the holding device.
Does not project, and the work receiving member 82 and the mounting surface 9
Since 8 is on the substantially same plane, the work is slid on the plane and is sent to a position where the rotation axis of the holding device 20 of the mounting surface 98 and the rotation axis of the work coincide with each other.

Next, the reciprocating drive device 128 operates,
When the mounting member 90 moves downward, the three chuck members 8
8 projects above the mounting surface 98, and the three chuck members 88 move in the expanding direction as shown in FIG. 8B. As a result, the work can be held inside the work. Although the case where the chuck member 88 is in contact with the inside of the work has been described in the present embodiment, the guide groove portion 106 provided on the mounting member 90 is directed toward the center of the mounting member 90. It goes without saying that the work can be gripped from the outside by.

The holding device 20 holding the work as described above moves upward by the operation of the reciprocating device 40 of the holding device until the work comes into contact with the pressing member located above. The height of the pressing member 42 can be adjusted by a vertical movement device according to the type of work to be ground, and is held at a predetermined position so that the rotary grinding tool 28 can appropriately abut. Also, when grinding multiple types of mixed work, the type of work is determined by the sensor provided in the centering device, and the vertical movement device is controlled by the computer system, etc. Then, the height of the pressing member 42 is changed.

In this way, the rotating and holding tool 28 of the grinding device 26 is moved by the contacting / separating device so as to contact the work, and the work is held securely. At this time, the holding device 20 holding the work is rotated by the rotating device 22. This makes it possible to grind cast burrs and the like on the entire outer peripheral surface of the work. When grinding multiple types of mixed work, the type of work is determined by the sensor provided in the centering device, etc., and the contact / separation device is controlled by the computer system, etc. Correspondingly, the grinding device 26 performs a predetermined operation. As a result, it is possible to continuously grind a plurality of mixed works. In addition, the sensor is the work thickness, outer diameter,
It is possible to identify the type of the work by identifying the diameter of the contacting portion of the centering member.

After the work is processed in this way, the holding device 20 is lowered by the vertical movement device 40 of the holding device, and the holding state of the work by the pressing member 42 is released. Then, as the mounting member 90 of the holding device 20 rises, the holding state of the work by the chuck member 88 is released, and the work is simply placed on the mounting surface 98 of the mounting member 90. At this time, the height of the mounting surface 98 is the height of the work receiving member 82 receiving the work.
It is the same or slightly lower. Therefore, the pressing member 18 provided so as to project from the positioning device 12 in the workpiece feeding direction operates simultaneously with the positioning device 12 by the feed reciprocating device 14 to press the workpiece mounted on the mounting member 90. Can be discharged to the discharge conveyor 30. At this time, as described above, the feed reciprocating device 1
The unworked work centered by the positioning device 12 by 4 is simultaneously supplied to the mounting surface 98 of the mounting member 90.

Next, the vertical movement device 16 of the positioning device is actuated, and the positioning device 12 and the pressing member 18 are both raised. As a result, the positioning device 12 and the pressing member are moved by the feed reciprocating device 14 in the direction opposite to the feeding direction so as not to interfere with the work held by the holding device 20. By repeating the above operation, a plurality of types of works can be automatically and sequentially ground.

In the positioning device 12 of the above embodiment, the mechanism for uniformly abutting the work from four directions to position the work has been described. However, in order to center the disk, at least three are used. It goes without saying that the centering member of 1 may evenly contact the circumference of the disk-shaped work from at least three directions. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

[0042]

According to the processing machine of the present invention, the workpiece is
Simultaneously with being sent to the holding device, the positioning is almost completed on the holding device. Therefore, it is possible to improve the processing efficiency without stopping the operation of the processing apparatus for the time for centering the work. Also, since the work is fed into the holding device so that the center of rotation of the holding device and the axis of the work are approximately aligned, when setting different types of mixed work, the setting of jigs and tools for positioning is changed. Without doing so, the work can be reliably supplied while being continuously positioned on the holding device. Therefore, according to the processing machine of the present invention,
It is possible to shorten the down time during processing of the processing device as much as possible, and perform processing one after another in a state in which a plurality of types of works are mixed. As a result, the machining time of the workpiece can be shortened, the setup time for positioning the workpiece in the machining machine can be shortened, and the labor for managing the type of the workpiece can also be reduced, so that the machining efficiency of the workpiece can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a processing machine according to the present invention.

FIG. 2 is a side view with a part of the embodiment of FIG. 1 omitted.

FIG. 3 is a front view illustrating an example of the positioning device and the like of the example of FIG.

FIG. 4 is a plan view of the embodiment of FIG.

5 is a plan view for explaining details of the embodiment of the positioning device in FIG.

FIG. 6 is a cross-sectional view illustrating an example of the holding device and the like of the example of FIG.

7 is a plan view of the holding device of FIG.

FIG. 8 is a cross-sectional view illustrating an operating state of the holding device in FIG.

[Explanation of symbols]

 10 Supply Conveyor 12 Positioning Device 12a Positioning Position 14 Feed Reciprocating Device 16 Vertical Moving Device for Positioning Device 18 Pressing Member 20 Holding Device 20a Processing Position 22 Rotating Device 24 Rotating Member 26 Grinding Device 28 Rotating Grinding Tool 30 Discharging Conveyor 32 Grinding Driving Motor 34 Contact / separation drive mechanism 36 Contact / separation guide 38 Contact / separation drive device 40 Reciprocating device for holding device 42 Holding member 44 Grinding measurement sensor 62 First centering member 63 Second centering member 88 Chuck member 90 Mounting member

Claims (5)

[Claims] 1. A substantially disk-shaped, columnar, or cylindrical work is conveyed on a work conveyance path and is sent to a holding device one after another, and the sent work is held by the holding device and the axis of the work is held. In a processing machine for rotating the workpiece around the workpiece and processing the outer peripheral portion of the workpiece by bringing the processing device into and out of contact with the workpiece relatively, the workpiece has a positioning means for positioning the workpiece in advance on the workpiece transfer path. A processing machine comprising: a feeding device that feeds the work to the holding device with the axis of the work substantially aligned with the rotation center of the holding device. 2. When the unprocessed work positioned by the positioning means is supplied to the processing position by the feeding device, the preceding work which has been processed is pressed and discharged from the processing position. The processing machine according to claim 1, wherein a pressing member is provided on the positioning means so as to project in the feed direction of the work. 3. The positioning means comprises a plurality of positioning members which are arranged so as to be capable of reciprocating toward the center and which come into contact with the work to position the work. The processing machine according to 2. 4. A holding device provided so as to reciprocate in the axial direction of the held work, and a reciprocating device provided so as to face the holding device in the axial direction of the work, and the work is held between the holding device and the holding device. The processing machine according to claim 1, 2 or 3, further comprising: a holding member sandwiched by and a reciprocating device that reciprocates the holding device and the holding device in the axial direction of the work. 5. A holding device for holding a work at a predetermined position by a holding portion that holds the work in contact with the work for machining the work, wherein the holding device holds the work when holding the work. Part
When the work is projected onto the mounting surface of the mounting member of the holding device on which the work is mounted, abuts against the work and holds the work, when the work is supplied onto the mounting surface or is discharged from the mounting surface. When holding, the holding part is provided so as to be capable of reciprocating relative to each other so that the holding part releases the holding of the work and retracts below the mounting surface. Work holding device