JPH012806A - Workpiece drilling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to workpiece drilling and mounting, and more specifically, the rotational drive means of the chucking device is composed of a control motor and a harmonic drive, and the chuck head The present invention relates to a work drilling device which is directly connected to a control motor via a harmonic drive, and furthermore, the moving table of the base L is moved by the control motor, and the control motor itself moves together with the base.

[Prior Art] As is well known, there are various types of drilling processes for drilling holes on the circumferential surface of a cylindrical workpiece, and recently, many processing machines for this purpose have been automated. An example of the workpiece itself to be machined is as follows.

That is, as shown in FIG. 13 of the accompanying drawing, one example is a cylindrical bushing in which a plurality of holes are bored on the circumference of a cylindrical workpiece 1'. Equal distribution of angles along the line Q', number of rows in the longitudinal direction of the cylindrical workpiece X', and pitch P' of drilling each adjacent hole,
Drilling is performed by determining the starting point, that is, the distance L' from the end surface.

By the way, if we look at the conventional technology of workpiece processing equipment that processes such workpieces, it has a base and a moving table that moves this base L in the left-right direction, and this moving table chucks a pair of left and right workpieces. A chucking device is provided for the drilling, and the pair of holes has a drilling means. In this prior art, a mechanical index plate was previously used to drill the workpiece (indexing and rotation of the chucking device during machining operation).

Recently, an indexing device in which a gear (worm wheel "g") is interposed in a pulse motor has been used to obtain high resolution.

Furthermore, although most of the chunks in the above-mentioned chucking device use scroll chucks, it is difficult to automate the chucks themselves, so attempts to use air chucks have also been proposed.

In particular, a pulse motor, which is a moving means for moving the moving table, is fixed on the base and driven through gears and a lead spline shade. The motor is therefore located on the base and below the moving table.

[Problems to be Solved by the Invention] According to the above-mentioned prior art, there are some problems to be solved in the following points.

In other words, (X) Although it is possible to automatically load and unload the workpiece by using an air chuck as the chucking device, the indexing (rotation) of the chucking device is achieved by interposing gears etc. in the pulse motor to achieve high resolution. However, there is an inherent backlash in gear meshing, which reduces indexing accuracy.

Therefore, numerical control is virtually impossible.

The CH+ motor is fixed on the base and placed under the moving table, so when drilling a cylindrical workpiece, apply cutting oil, etc. to the workpiece. When it falls on the base, it also enters the inside of the motor fixed on the base, causing problems due to motor failure.

Therefore, even if the control technology is excellent, the positioning accuracy of the motor is poor, so the processing requirements for the workpiece, such as equal distribution, steps, pitch, distance from the end face, etc., will deviate.Therefore, the workpiece cannot be processed precisely. There is a drawback that the quality cannot be made uniform.

- (3) When positioning cylindrical workpieces on a chucking device, a worker must manually load them one by one, making it difficult to improve work efficiency and reduce worker labor.

Therefore, an object of the present invention is to provide a means for improving the indexing accuracy of a chucking device by using a +1 harmonic drive.

That is, by disposing a harmonic drive between the conical cup-shaped chuck head and the control motor, and by directly connecting the chuck head to the control motor with the harmonic drive interposed, backlash can be reduced as much as possible and automatic operation can be achieved. The device is equipped with a workpiece hole that allows the workpiece to be mounted and removed in a timely manner, and also enables high-resolution indexing.

- To provide a means by which the motor can be moved together with the moving table.

In other words, by installing the motor on the movable table, it is possible to prevent the intrusion of cutting oil, etc., and to improve the positioning accuracy of the movable table at all times, making it possible to machine the workpiece with high precision. We are in the process of providing equipment.

Furthermore, it is an object of the present invention to provide a device in which the frame structure of the Uchakkinog device has holes in the workpiece that can reduce pitching, rolling, yawing, etc. as much as possible.

That is, by making the support of the chucking device into a relatively thick inverted T-shape and further providing an LM guide in the center of the lower part, the %D of the support is lightened and the quick response with the control motor is improved. At the same time, it is an object of the present invention to provide a device for drilling holes in a workpiece that can facilitate dynamic accuracy by increasing the moment of inertia of the cross section.

[Means for Solving the Problems] The present invention has the following technical means to achieve the above object. That is, to explain using the reference numerals used in the accompanying drawings corresponding to the embodiments, the first invention has a base and a movable table on the base.

In the left and right direction of the moving table, there is provided a chucking device for chucking a pair of left and right workpieces, and a rotating means for rotating each chuck head of the pair of left and right chucking devices. A pair of hole drills arranged opposite to each other for drilling holes in the circumferential surface of the workpiece at positions in the front and back direction of the base are equipped with a drill means; The means 110 is composed of a control motor 111 and a harmonic drive 112, and the harmonic drive 112 is connected to a wave e-generator 113. Flexspline l14. The harmonic drive 112, which is composed of a circular spline 115, is disposed between the control motor 111 and the chucking head 16. This workpiece drilling device is formed into a cup shape and is further characterized in that the chucking head 16 is directly connected to the control motor 111 with a harmonic drive 112 interposed therebetween.

Further: the invention of tTj2 enables the above-described first invention, and the movable table 3 has a control motor 14 which is a means for moving left and right 12.13 directions, and a lead spline 15 driven by the control motor 14. Furthermore, a ball screw body 4B screwed onto the above-mentioned spline 15 is fixed on the base, and when the control motor 14 is driven, the control motor 14 itself moves together with the movable table 3. Work hole drilling is a device.

Furthermore, a third invention enables the above-mentioned second invention, and the support column 22 of the chucking device 4 is a relatively thick inverted T.
The present invention relates to a workpiece drilling apparatus characterized by having a LM guide 40 at the center below the support column 22 and increasing the moment of inertia of the cross section.

[Function] With the above structure, first, the cylindrical workpiece 11 is automatically positioned at the clamping position, and then automatically clamped by the conical chuck head 16 of the pair of left and right chunking devices 4. .

Next, the moving table 3 is moved and positioned to the hole drilling position of the work 11. At this time, if the control motor 14 is driven when the moving table 3 is moved, this motor 1
A lead spline 15 connected to the lead spline 15 is driven to rotate, and a ball screw body 46 screwed onto the lead spline 15 moves the movable table 3 left and right! 2,!
It moves in three directions, and at this time, the control motor 14 is also moved together with the moving table 3.

A control motor 111, which is a rotational drive means 110 for rotationally driving the chuck head 16, and a wave motor 111 are connected to each other.
Generator 113. A hole predetermined by a harmonic drive 112 consisting of a flex spline 114 and a circular spline 115 is driven and positioned at a predetermined position, and a pair of holes perpendicular to the workpiece 11 are drilled in the workpiece 11 by the drill means 5. peripheral surface 23 of
The holes are drilled based on a predetermined sequence of operations.

The control motor 14, which is the positioning means for the movable table 3, is disposed on the movable table 3 and moves together with the movable table 3, so that the hole in the cylindrical workpiece 11 is cut during machining. Since there is no possibility that oil or the like will directly infiltrate into the motor 14, the positioning accuracy of the movable table 3 can be improved at all times, and the target cylindrical workpiece 11 is automatically moved to the chucking device 4.
After feeding and positioning, the holes in the workpiece 11 can be machined automatically, so the holes in the workpiece 11 can be machined continuously, and the J-method accuracy of the product can be kept constant at all times. It is something that can be kept.

[Embodiments] Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings FIGS. 1 to 12.

In this example, a pulse motor is used as the control motor.

In the figure, 1 indicates a device for drilling a workpiece, and device 1 for drilling a workpiece is a base 2. Moving table 3, Chatsuki puffer device i
! 14. Drill means 5. Work loading means 6, work transfer means 7. It is composed of a work supply and discharge means 8.

The base 2 is attached to a frame (not shown),
The base 2 has a substantially rectangular shape, and a cover 10 of a predetermined height is erected on the circumferential surface 9 of the base 2.

This cover 10 is provided in the hole of the workpiece 11 to receive cutting oil, water, etc. used during machining.

Further, the movable table 3 is disposed on the base 2, and the movable table 3 is attached to the base 2 so as to be slidable in 12 and 13 directions to the left and right. This moving table 3 is connected to the base 2 by a control motor 14, which is a moving means. It is driven in 12 and 13 left and right directions by a lead spline 15W.

Details of the means for moving the moving table 3 will be described later.

Furthermore, the above-mentioned left and right pairs of chucking devices 4 are respectively disposed on the moving table 3F.

, F chucking device 2!4 is composed of a chuck head 16 and a rotation drive means 110 for rotationally driving the chuck head 1B.

In this example, for example, the chucking device 4 on the right 13 side
The rotational driving means 110 is composed of a control motor 111, a harmonic drive 112, and a wave generator 113, a flexspline 114, etc. on the output shaft 17 of the motor 111. A harmonic drive 112 consisting of a circular spline 115 is provided, and the chuck head 16 is connected via the harmonic drive 112.

The chuck head 1B has a substantially conical tip shape so that it can be easily fitted from both ends of the cylindrical workpiece 11, so that it can easily come into contact with the inside of the cylindrical workpiece 11 and can easily bring out the R center. It is.

Also, focusing on the harmonic drive 112, the wave generator 113 is composed of an elliptical cam 11B and a pole bearing 117 fitted around its outer circumference.The inner ring of the bearing 117 is fixed to the cam 116, but the outer ring is fixed to the pole It is elastically deformed via 117.

Further, the flexspline 114 is a thin, cup-shaped metal elastic body, and a plurality of grooves 116 are formed around the outer periphery of the opening.

Further, the circular spline 115 is a rigid ring-shaped member, and teeth 119 of the same pitch as the flexspline 114 are formed on the inner periphery, and the number of teeth is two more than the flexspline 114.

Combining the above three elements, flexspline 11
4 is bent into an elliptical shape by the wave fist generator 113, and a circular spline 1 is formed at the long axis of the ellipse.
15 and teeth 116 are engaged, and 116 is completely separated at the short axis portion.

On the other hand, the chucking device i on the left side 12! The i4 is not equipped with a motor itself for driving the chuck head 16, and a driven shaft is connected to the chuck head 16 to rotate along with the control motor 111, which is the rotational drive means 110 on the right side 13. I'm being forced to do it. Further, the role of the chucking device 4 on the left side 12 is to move the chuck head 16 forward and backward so that it can accommodate various lengths of the cylindrical workpiece 11 when clamping the workpiece 11. It is arranged at the rear part 19 of the chucking device 4. The moving/retracting means 16 for the chuck head 1B moves the chuck head 16 backward by supplying compressed air from a compressor or the like to the forward air supply port 20 or the backward air supply port 21. Control of the advancing/retracting means 16 at this time is performed by a control device (not shown).

In addition, each of the chucking devices 4 on the left and right sides 12 and 13 described above has a role, that is, the chuck head 16 is
The chucking devices 4 may be reversed in order to move the chuck head 16 forward or backward depending on the length of the cylindrical workpiece 11 to which the chuck head 16 is attached. Furthermore, the above-described pair of left and right chucking devices 4 are vertically installed on the left and right 12.13 sides of the movable table 3 via inverted T-shaped supports 22, respectively.

Furthermore, the above-mentioned left and right 12.13 pair of chucking devices 2!
When the workpiece 11 is clamped between the chuck heads 16 of the i4, the drill means 5 face each other to drill a pair of holes in the stirrups perpendicular to the circumferential surface 23 of the workpiece 11, that is, the front and rear 24.25 holes on the base z. It is arranged as follows.

To drill this hole, the drill means 5 includes a chuck head for mounting a drill 2B etc., an induction motor 27 for rotationally driving this chuck head, and a drill 26 etc. which are rotationally driven by this induction motor 27. The drill means 5 is positioned and fixed on the base 2 for drilling the hole.

Next, a work loading means 6 for sequentially feeding the cylindrical workpieces 11 to the transfer position is disposed at a position perpendicular to the chucking device 4, that is, in the front and back 24.25 directions of the base 2. ing.

Further, the workpiece transfer means 7 for sequentially transferring the cylindrical workpieces 11 positioned at the workpiece transfer position by the workloading means 6 to the chucking position of the chucking device 4 is located at a position orthogonal to the workpiece loading means 6, that is. They are arranged in 12 and 13 left and right directions with respect to the base 2.

The work transfer means 7 in E is a transfer air cylinder 28.
, a work pushing rod 29, a work transfer rod 30, a work receiving bracket 31, etc., and the transfer air cylinder 28 is attached to the second step 32 of the support 22 which is set up on the base 2, and the transfer air cylinder 28 is attached to the Φ step 33. Work pushing rod 29,
When each of the workpiece transfer rods 30 is attached to the lower stage 34, their respective tail ends 35 are connected by a connecting plate 3B.

Furthermore, the workpiece receiving metal fitting 31 is attached to the front end 37 of the workpiece transfer rod 30.

Furthermore, by driving the piston 3 of the transfer air cylinder 28, the connecting plate 3 is driven in the 12 and 13 directions to the left and right with respect to the base 2, so that it is attached to the work pushing rod 29 and the work transport rod 30. The attached workpiece holder 31 is driven in 12 and 13 left and right directions.

More specifically, the workpiece 11 on the workpiece holder 31
By driving the piston 38 of the transfer air cylinder 28, the workpiece 11 inserted into the stopper rod 53 is moved to the right side 13 by the spring 54 attached to the rear of the workpiece pushing rod 29. stand out. At this time, the stopper rod 53 is pushed by the push rod 29 to a stopper (not shown), and the stopper rod 53 is positioned to stop by this stopper. This push rod 28 has a cylindrical shape, and is guided by the stopper rod 53 and further projects to the right side 13. Then, the workpiece 11 inserted into the stopper rod 53 is further moved to the right side 13, and the workpiece 11 is positioned at the clamping position of the chuck portion 51.

Furthermore, the workpiece 11 clamped in the chuck part 51
The workpiece supply/discharge device i in the front section 50! By moving the chucking device 16 back and forth, the chucking device 4 is positioned.

The positioned workpiece 11 is then clamped by the left and right 12,13 pairs of chucking devices 4.

To specifically explain the above-mentioned moving table 3,
An LM guide 40 having a rectangular cross section and projecting downward is attached to the bottom surface 39 of the moving table 3.
On the side surface 41 of the guide 40, guide rails 442 are formed at six locations, two at predetermined intervals, and the guide rails 43 and guide rail receivers 44 are fitted to the base so as to fit into the guide rail grooves 42. 2, and the movable table 3 is moved left and right with respect to the base 2!
2. It can slide in 13 directions. Left and right 1 at this time
2. Focusing on the moving means in the 13-direction, this moving means is attached to the side surface of the moving table 3 on the rear 25 side with respect to the base 2 in this example.

This moving means has the lead spline 15 connected to the output shaft 45 of the control motor 14.
4 side and the end side of the lead spline 15 are connected to the movable table 3 via supports 22, respectively.

Further, a ball screw body 4B is screwed onto the lead spline 15, and the ball screw body 46 is fixed onto the base 2 described above.

Furthermore, an auxiliary guide rod 47 is provided below the lead spline 15, and this auxiliary guide rod 47 is inserted into a cylindrical auxiliary guide receiver 48.

Therefore, the pulse motor 14, which is the moving means, is arranged parallel to one side surface of the moving table 3, and the moving table 3 is arranged on either side of the left or right side 12. 1
It moves together when moving in three directions. Furthermore, the holes in the workpiece 11 are designed to prevent cutting oil and the like used during machining from entering the pulse motor 14, which is the lower stage of movement.

This is because the pulse motor 14 is attached to the moving table 3 and is not disposed on the base 2, so there is no risk of it getting wet with cutting oil or the like.

By driving the moving means of the moving table 3,
The movable table 3 is moved and positioned to the left and right sides 12.13 with respect to the ball screw body 46 screwed onto the lead spline 15.

In this example, the moving means is precisely controlled by a control device (not shown) such as a microcomputer.

Furthermore, the above-mentioned workpiece supply/discharge means 8 is disposed below the workpiece loading means 7, and the hole-drilling part of the workpiece 11 is used to supply the processed workpiece, and the hole-drilling part is used to discharge the workpiece 11 to the discharge port at the end of machining. be.

Therefore, by pre-caulking and setting a predetermined number of cylindrical workpieces 11 into the loading means 6, holes in the workpieces 11 can be continuously and automatically drilled.

In addition, the chucking device 4 mentioned in "2" and the drill 1 stage 5. Pulse motor 1 which is a moving stage of moving table 3
4 are each provided with a protective cover 49 for protecting the workpiece 11 from cutting oil, water, etc. used when cutting the workpiece 11.

Further, a chuck part 51 is provided at the front part 50 of the work supply/discharge means 8 described above, and this chuck part 5
1 is a chucking device: Work 1 attached to 1i4
It is attached so that it can move forward and backward relative to 1. Furthermore, this chuck part 51 is formed with an air discharge port (not shown), and when the chuck part 51 is opened by air blow from this air discharge port, the air is caused to fall into the discharge chute 52 located below. It is something.

Furthermore, the above-described auxiliary guide rod 47 is formed hollow, and a plurality of electric wires are housed in the auxiliary guide rod 47 to protect it from cutting oil and the like.

Furthermore, as shown in Fig. 12 (A) and (B), the circular
Fixing the spline 115, the wave generator 1
When 13 (input) is turned, the flexspline +14 is elastically deformed, and its meshing position with the circular spline 115 is sequentially moved.

When the wave generator 113 rotates once, that is, in FIG. 12(B), the flexspline 114 has two fewer teeth than the circular spline 115, so the number of teeth of the wave generator 113 is reduced by that much. It is moved in the direction opposite to the direction of rotation. Generally, accuracy can be improved by extracting that movement as an output.

The control motor described above is an example of a pulse motor, but other motors such as a DC servo motor, an AC servo motor, etc. may be used.

Next, an example of how this embodiment is used will be explained.

Since this example shows an example of microcomputer type numerical control, the steps PI to P19 in the step chart of FIG. 10 are shown in the order for explanation.

After starting at step P1, first, at step P2, operations are selected according to various types of the cylindrical workpiece 11.

Next, in step P3, execution data corresponding to the machining request for the cylindrical workpiece 11 is input.

At this time, depending on the processing request, the number of rows in the longitudinal direction of the cylindrical workpiece 11 arranged at equal angles along the circumference of the cylindrical workpiece 11,
Execution data such as the pitch of each adjacent hole and the distance from the starting point, that is, the end face, are input for each hole.

Next, in step P4, the workpiece hole is drilled by automatic feeding/
Select manual supply operation. That is, by using automatic operation, the transfer of the cylindrical workpiece 11 to the clamping position, clamping, drilling, and discharge after completion of drilling are performed continuously, whereas by manual operation, the cylindrical workpiece 11 is moved to the clamping position. It is necessary to manually position each one one by one.

Next, in step P5, the machine moves to the machine origin.

In other words, this machine origin is the cylindrical workpiece 11 on the left and right sides 12 each time.
．． This is the starting position before loading into the chucking device 4 of No. 13.

Next, in step P6, an automatic origin is searched for.

That is, the cylindrical workpiece 11 is loaded into the loading means 6, the workpiece transfer means 7. This is the position for loading the pair of left and right chucking devices 4 by the workpiece supply/discharge means 8.

Next, in step P7, the moving table 3 moves to the automatic origin to enable loading.

Then, in step P8, by inserting the plurality of cylindrical works 11 orthogonally into the mounting section which is the work loading means 6, the cylindrical works 11 are guided by the guide plate located at the L section of the mounting section and positioned downward. It is positioned at the mounting portion of the positioning plate 56 and then at the transfer position of the workpiece transfer means 7.

Next, in step P9, the workpiece 1 positioned in the previous process is
1 is attached to the stopper rod 53 which is the work transfer means 7. Then, by driving the transfer air cylinder 28, the work pushing rod 28 and the work conveying rod 30 are moved to the right 13 side. At this time, the transport rod 30
A stopper rod 53 on the workpiece holder 31 attached to the front end 37 of the workpiece holder 31 is pushed by the push rod 29 to a slopper (not shown) and is positioned to stop.

”: The push rod 29 is further guided by the stopper port/rad 53 and protrudes to the right side 13, so that the workpiece 11 inserted in the stopper rod 53 moves toward the workpiece supply/discharge means 8 and is further transferred. When the air cylinder 28 is driven, the workpiece transfer rod 30 is pushed by the spring 54 and protrudes. Due to this protrusion, the workpiece 11 inserted into the stopper rod 53 on the workpiece holder 31 is positioned on the workpiece supply/discharge means 8 by the workpiece transfer rod 30.

Next, in step PIO, the chucking devices 4 are loaded into a pair of left and right chucking devices. That is, the cylindrical workpiece 11 positioned at the chuck position is positioned at the pair of left and right chucking positions 4 by the chuck portion 51, which is the supply/discharge means 8, and the chucking device 4 on one of the pair of left and right is moved. In this example, the rod 15 is moved forward and backward toward the chuck of the left 12 chucking device 4 by the advancing/retracting means 16, and is clamped between the chuck heads 16 of the pair of left and right chucking devices 4.

Next, in step ptt, the drilling of the cylindrical workpiece 11 is moved to the processing position based on the execution data necessary for processing, by driving the lead spline 15 by the pulse motor 14, which is the moving means of the moving table 3. is positioned with.

Next, in step P12, the cylindrical workpiece 11 is created based on the execution data input in step P3 described above.
A predetermined hole is machined on the circumferential surface 23 according to the -j method.

At this time, when drilling holes in the circumferential surface 23 of the cylindrical workpiece 11 in a staggered manner, for example, the cylindrical workpiece 11
Drilling is performed based on the execution data by driving only one of the drill means 5 forward, and the number of stages is If there are a lot of The mounted workpiece 11 is rotated and positioned, and the hole is similarly drilled by the drill means 5.

Next, in step P13, when the machining is completed, the drilling machine is moved to the automatic origin by the moving means of the moving table 3.

Next, in step P14, before the work supply and discharge means 8,
! The chuck portion 51 located at '1150 moves back and forth and is positioned on the workpiece 11 which is clamped between the pair of left and right chucking devices 4.

Then, in step P15, the chuck section 51 of the workpiece supply/discharge means 8 chucks the workpiece 11. The workpiece 11 is dropped onto a discharge chute 52 located below.

In this example, the movement and positioning of the moving table 3 in the left and right directions 12 and 13 are accurately controlled by numerical control by a computer.

Next, in step P1B, the workpiece 11 chucked by the chuck unit 51 of the supplying and discharging means 8 described in -F is supplied and discharged by retracting one of the left and right chucking devices 4. Clamp the means 8.

Next, in step P17, the supplying and discharging means 8 is moved backward and positioned at the discharging position, that is, the discharging chute 52-t.

Next, in step P16, the robot waits while remaining in the retreated state, and returns to the clamping position for clamping the workpiece 11.

Next, in step P19, the chuck portion 51 of the supply/discharge means 8 is opened and the cylindrical work 11 positioned on the chuck portion 51 is discharged onto the discharge sheet 52 by air blowing. In particular, when drilling a hole in the workpiece 11, the pulse motor 14 moves along with the moving table 3 in the left and right directions 12 and 13 of the base 2, so more specifically, the pulse motor 14 is fixed to the base 2. Since this hole is not drilled in the workpiece 11, the cutting oil, water, etc. used during machining will not directly intrude into the pulse motor 14, which is the moving means.

Therefore, since the accuracy of the pulse motor 14 can be maintained, the positioning accuracy of the moving table 3 can be further improved. Also, I! by the work loading means 6, the work transfer means 7, and the work supply/discharge means 8! l
! The workpiece 11 can be automatically fed to the machining position and discharged from the machining position.i! Since the workpiece 11 can be continuously drilled, it is efficient, and machining accuracy can be easily maintained.

In addition, the chuck head 16 is rotated by a pulse motor 111 and a harmonic drive 112, which are rotation driving means 11O.
This allows the indexing and rotation of the workpiece 11 to be made with higher resolution.

Furthermore, since the indexing of the pulse motor 111 is highly accurate and accurate by 11 points, numerical control by a computer is possible.

This is because torque is accurately transmitted from the pulse motor 111 to the conical chuck head 16. That is, since the teeth of the harmonic drive 112 mesh with each other due to elastic deformation, backlash does not substantially occur.

Further, by forming the support column 22 of the chucking device 4 into an inverted T shape, it is possible to reduce pitching, yawing, rolling, etc. while making it lightweight, and to improve the quick response of the pulse motor 14.

[Effects of the Invention] As detailed above, the present invention has ■Harmonic Drive 1
By using 12, it is possible to provide means for improving the indexing accuracy of the chucking device 7X4.

That is, by disposing the harmonic drive 112 between the conical cup-shaped chuck head 16 and the control motor 111 and directly connecting the chuck head 16 to the control motor 111 with the harmonic drive 112 interposed, backlash can be prevented and the split can be achieved. It is possible to provide a workpiece drilling device that can improve the drawing accuracy, automatically attach and detach the workpiece 11, and perform high-resolution surface indexing.

) It is possible to provide means for moving the motor 14 together with the moving table 3.

That is, by installing the motor 14 on the movable table 3, i.e., it is not fixed on the base 2, it is possible to prevent cutting oil etc. from entering during workpiece machining, and to improve the positioning accuracy of the movable table 3 at all times. We can provide equipment that can improve the workpiece drilling.

Furthermore, it is possible to provide a workpiece drilling device that can reduce pitching, rolling, yawing, etc. of the frame structure of the chucking device 4 as much as possible.

That is, the support 22 of the chucking device 4 is formed into a relatively thick inverted T.
By making the support pillar 22 into a letter shape and further providing the LM guide 40 in the center of the lower part, it is possible to reduce the EQ of the pillar 22, improve quick response with the control motor 14, and increase the moment of inertia of the cross section. Drilling a hole in a workpiece, which can facilitate dynamic precision, has considerable practical advantages, such as being able to provide a device.

[Brief explanation of the drawing]

The accompanying drawings, FIGS. 1 to 12, show embodiments of the present invention, and FIG. 1 is a front view of the chucking device j11 including a pair of front and rear hole drilling means centering on the right chucking device, and FIG. The figure is a side view including a partial cross section of a pair of left and right chucking devices, FIG. 3 is a detailed view of the lead spline, FIG. 4 is an enlarged front view of the right chucking device, and FIG. 5 is an enlarged front view of the left chucking device. Enlarged rear view, Figure 6 is a side view of the workload loading means, Figure 7 is the workload loading 1
FIG. 8 is a side view of the work transfer means, FIG. 9 is a partially enlarged view showing the operation of the work transfer means, FIG. 1θ is a step chart, and FIG. Cross-sectional view along the x-X line in Figure 2, Figure 12 (A) CB)
13 is a sectional view showing the operation of the harmonic drive, and FIG. 13 is a perspective view showing the explanation of the workpiece. In the figure, 3... moving table, 4... chucking device. 5. Hole making is a means of drilling, 11. Fisting is a work. 12...Left, 13...Right, 14...Pulse motor 1 15...Lead spline, 1G...Chuck head. 23...Surrounding surface, 24...Front, 25...Rear, 110...Rotation drive means, 111...Control motor. 112...Harmonic Drive, 113...
A wave generator, 114 . . . flex spline, and 115 . . . circular spline are shown, respectively. (T”:': Agent Patent Attorney Ike
[H Hiroshi゛i ゛Drawing dispute I11 Procedural preference It is correct ='? (Method) ・1 No. 1 Indication of outside city) 3 Relationship with the case of the person making the amendment Patent applicant address 1492 Otari, Kanyo-cho, Koza-gun, Kanagawa Prefecture Name Right Limited Company Horiyo Electric Industry Representative Director Sueo Horiyo 4 Agent Person 220 Address 608 Skymenar Yokohama, 2-11-2 Takashima, Nishi-ku, Yokohama Name No. 7635 Patent Attorney Hiroshi Ike 1)
Equipment 045-453-3555 5 Date of amendment order August 25, 1988 6 Target of amendment ■ “Name of patent applicant” column of application ■ Power of attorney (3) Figures 1O and 13 of the drawings 7 Amendment Contents ■As per the attached application form■As per the attached power of attorney■As shown in attached drawings Figures 10 and 13

Claims (3)

[Claims] (1) It has a base and a movable table on the base,
The moving table has a chucking device for chucking a pair of left and right workpieces in the left and right direction of the moving table, and the surface also has a rotation drive means for rotating each chuck head of the pair of left and right chucking devices, and a base. In a workpiece drilling device equipped with a pair of drilling means arranged opposite to each other for drilling a hole in the circumferential surface of a workpiece at a position in the front-rear direction; , a control motor 111 and a harmonic drive 112. The harmonic drive 112 is composed of a wave generator 113, a flex spline 114, and a circular spline 115. The harmonic drive 112 is disposed between the control motor 111 and the chucking head 16. the chucking head 1
6 is formed into a conical cup shape so as to be able to fit on both ends of the cylindrical workpiece 11, and further includes the chucking head 16.
A workpiece drilling device characterized in that it is directly connected to the control motor 111 with a harmonic drive 112 interposed therebetween. (2) It has a base and a movable table on the base,
The movable table has a chucking device for chucking a pair of left and right workpieces in the left and right direction of the moving table, and a rotation drive means for rotating each chuck head of the pair of left and right chucking devices, and a base. A workpiece drilling device is provided with a pair of drilling means arranged opposite to each other for drilling a hole in the circumferential surface of a workpiece at a position in the longitudinal direction of the workpiece, the rotational driving means of the chucking device being controlled by a It is composed of a motor and a harmonic drive, and the harmonic drive is composed of a wave generator, a flex spline, and a circular spline. It is formed into a conical cup shape so that it can fit on both ends of the
Further, in the workpiece drilling device, the chucking head is directly connected to the control motor via a harmonic drive; It has a lead spline 15 driven by the lead spline 15, and a ball screw body 46 screwed onto the lead spline 15 on the base.
is fixed, and the control motor 14 itself moves together with the movable table 3 when driven by the control motor 14. (3) It has a base and a movable table on the base,
The movable table has a chucking device for chucking a pair of left and right workpieces in the left and right direction of the moving table, and a rotation drive means for rotating each chuck head of the pair of left and right chucking devices, and a base. A workpiece drilling device is provided with a pair of drilling means arranged opposite to each other for drilling a hole in the circumferential surface of a workpiece at a position in the longitudinal direction of the workpiece, the rotational driving means of the chucking device being controlled by a It is composed of a motor and a harmonic drive, and the harmonic drive is composed of a wave generator, a flex spline, and a circular spline. It is formed into a conical cup shape so that it can fit on both ends of the
Further, the chucking head is a workpiece drilling device directly connected to the control motor via a harmonic drive, and the moving table includes a control motor as a left-right moving means and a lead spline driven by the control motor. In the workpiece drilling device, a ball screw body screwed onto the lead spline is fixed on the base, and the control motor itself moves together with the movable table when driven by the control motor; The workpiece drilling device is characterized in that the support 22 of the king device 4 has a relatively thick inverted T-shape, and has an LM guide 40 at the center below the support, increasing the moment of inertia of the cross section.