JP2517409Y2 - Work supply device for wire electric discharge machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work supply device for a wire electric discharge machine which automatically supplies the work to the wire electric discharge machine and automatically takes out the work after machining. .

[0002]

2. Description of the Related Art Conventionally, in order to supply a work to a wire electric discharge machine, the work is manually supplied to and supported by a jig of the wire electric discharge machine. Further, the work after processing is manually unsupported from the jig and then taken out.

[0003]

According to the above-mentioned supply method, there is a problem in that the work is supplied and taken out manually, so that it is extremely troublesome and the operation rate of the wire electric discharge machine is lowered.

Therefore, an object of the present invention is to provide a work supply device for a wire electric discharge machine that automatically supplies a work to the wire electric discharge machine.

[0005]

In order to solve the above-mentioned problems, in a work supply apparatus in a wire electric discharge machine of the present invention, both ends have pull studs protruding vertically, and the work can be freely attached and detached. The work holding vise that holds the work and the seat that stores and supplies the work have an upward hole into which the downward protruding end of the pull stud of the workpiece holding vise is inserted, and the downward protruding end of the pull stud is inserted into this upward hole. In the inserted state, a mounting receiver for mounting the work holding vise and an upward hole for inserting the downward projecting end of the pull stud of the wire holding vise, which is provided on the workbench for machining with the wire electric discharge machine. And a first clamp device for detachably pulling and fixing the downward protruding end of the pull stud inserted into the upward hole, and numerically controlled between the seat and the workbench. It has a moving arm and a downward hole provided in this arm for inserting the upward projecting end of the pull stud of the wire holding vise, and the upward projecting end of the pull stud inserted in this downward hole is detachably held. A second clamping device is provided, and the work holding vise and the first clamping device are provided with concaves and convexes that are fitted to each other when the downward protruding end of the pull stud inserted into the upward hole of the first clamping device is pulled in and fixed. The second clamp device is formed so as to grip the upward protruding end of the pull stud of the work holding vise when the arm is moved to the mounting receiver of the base by the arm, and then the arm moves from the base to the worktable. When the pull-down end of the pull stud of the work holding vise is moved and is inserted into the upward hole of the first clamp device of the work table, the pull star is moved. Releasing the upward projecting end of de first clamping device fixes pull downward projecting end of the pull stud is inserted into the upward hole of the first clamping device.

[0006]

In the work supply device of the above invention, the work is held by the work holding vise. In the seat, the work-holding vise is mounted by inserting the downward protruding end of the pull stud of the work-holding vise into the upward hole of the mounting receiver. By numerically controlling the arm,
The second clamp device is moved to insert the downward hole of the second clamp device into the upward protruding end of the pull stud of the work holding vise, and then the upward protruding end of the pull stud is gripped by the second clamp device. Then, the arm moves the second clamp device from the seat to the workbench. Then, the downward protruding end of the pull stud of the work holding vise is inserted into the upward hole of the first clamping device, and the downward protruding end of the pull stud is pulled in and fixed by the first clamping device, and then the upward protruding end of the pull stud is moved to the first position. 2 Release from the clamp device. By such a procedure, the work holding vise holding the work is moved from the seat to the work table. On this workbench, the work is electro-discharge machined.

Here, the work is held by the work holding vise, and both ends of the pull studs of the work holding vise are held by the first and second clamping devices to move or fix the work holding vise. . Therefore, the arm side has a simple structure. Further, if the concave and convex portions of the pull stud and the first clamp device that are fitted to each other are processed with high accuracy, the work holding vise on the workbench can be positioned with high accuracy, and further, the work in the work holding vise can be positioned. By performing the positioning in step 1 with high accuracy in advance, the work on the workbench can be positioned with high accuracy.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 shown in FIGS. 1 to 4 denotes an intermittent rotary table provided on a seat 2.

The rotary table 1 is adapted to actuate the speed reducer 3 by the operation of a motor (not shown) to transmit the rotation from the output shaft 4 of the speed reducer 3 to the support shaft 5 of the table 1.

As shown in FIG. 4, through holes 6 are provided at equidistant positions at the same pitch as the circumferential rotation angle of the disk 1'rotating with the rotary table 1, and the first cylinder 7 is provided in the through holes 6. By inserting the pin 8 that moves up and down by the action of, the rotary table 1 can be stopped at an accurate position.

In addition, a holding vise B for the work A to be placed is placed at equal intervals on the rotary table 1 with the peripheral through holes 6.
The receiving tool 9 which supports is provided.

On the overlapping surface of the receiving member 9 and the vise B,
A flat cross-shaped protrusion 10 is provided on one side, and a flat cross-shaped groove 11 is provided on the other side. When the vise B is placed on the receiver 9, the protrusion 10 and the groove 11 are fitted to each other for positioning. The direction is determined, and the downward projecting end of the pull stud 13 penetrating the vise B is inserted into the recessed hole 12 that faces downward from the center of the upper surface of the receiver 9.

As shown in FIG. 6, the pull stud 13 is inserted into the through hole 14 of the vise B so that both end portions thereof project above and below the vise B. Then, the pull stud 13 is communicated with the through hole 14 from the peripheral surface of the vise B. The pin 16 is pushed into the through hole 15 and the tip of the pin 16 is fitted into and attached to the through hole 17 of the pull stud 13.

Further, on the outside of the periphery of the turntable 1 on the seat 2, a traveling body 1 traveling in the left and right directions by numerical control.
8 are provided. The traveling body 18 slides using the rail 19 on the pedestal 2 as a guide, and is driven by the first servomotor 20 installed on the pedestal 2 and the ball screw 21 fixed to the traveling body 18 and screwed into the ball screw 21. It travels to the left and right with the nut 22.

Further, the traveling body 18 is provided with a horizontal arm 23 that moves up and down by numerical control and projects in the forward direction of the traveling body 18. The arm 23 slides by using the rail 25 of the pillar material 24 standing on the traveling body 18 as a guide, and is driven by the second servomotor 26 installed on the pillar material 24, and the arm 23.
It travels in the vertical direction by means of a nut 28 fixed to and screwed into the ball screw 27.

Further, a second clamp device 29 for clamping the upward protruding end of the pull stud 13 is provided at the tip of the arm 23.

As shown in FIG. 4, the second clamp device 29 has a through hole 31 formed at the center of the lower end wall of the second cylinder 30 and a cylindrical body 32 penetrating through the through hole 31. A piston 33 provided in the core, a plurality of through windows 34 provided at the lower end of the tubular body 32, balls 35 fitted in the respective through windows 34, and balls provided all around the lower portion of the through hole 31. 35 and the escape annular stepped portion 36 of the piston 35. First, a pressure in the extension direction is applied to the second cylinder 30 to cause the piston 33 to move.
The cylindrical body 32 is fitted to the outer side of the upward protruding end of the pull stud 13 while lowering the arm 23 while maintaining the lowered state of the piston 33. At this time,
The ball 35 is pushed to the annular step portion 36 by the contact between the outer peripheral surface of the pull stud 13 and the outer peripheral surface of the ball 35.

Next, when a pressure in the contracting direction is applied to the second cylinder 30 and the piston 33 is raised, the balls 35 in the through window 34 of the cylindrical body 32 which is also raised are pushed into the through hole 31, so that the pulling is performed. A part of the outer circumference of the ball 35 pushed into the annular groove 37 on the outer circumference of the upward protruding end of the stud 13 is fitted and engaged. As a result, the upward protruding end of the pull stud 13 is clamped via the ball 35.

Reference numeral 41 is a wire electric discharge machine for horizontally mounting the seat 2.

As shown in FIG. 1, the pedestal 2 laterally attached to the wire electric discharge machine 41 is horizontally projected on two opposite sides of the pedestal 2 and the work table 42 of the wire electric discharge machine 41, respectively. When the members 43 and 44 are provided and one of the cross-shaped protrusions of the engaging portion 45 provided on the facing surfaces of the projecting members 43 and 44 engages with the other cross-shaped groove, the discharge The pedestal 2 can be positioned with respect to the processing machine 41.

Further, on the work table 42, a receiver 46 for mounting the holding vise B for the work A is provided. As in the case of the receiving tool 9 on the table 1, a protrusion is provided on the upper surface of the receiving tool 46 to position and determine the direction of the vise B.

Further, when the vise B is supplied to the receiving member 46, the first clamping device 47 for clamping the downward end of the pull stud 13 which is fitted into the receiving member 46.
Is provided.

[0024] The first clamping device 47, as shown in FIG. 5, consistent with the permeable hole 49 provided in the center of the upper end wall of the third cylinder 48, the inner peripheral edge of the upper end edge of the hole 49 And the inner cylinder body 5 incorporated in the axis of the third cylinder 48.
0, an outer tubular body 52 that is slidably fitted to the outside of the inner tubular body 50 in a row from the piston 51, and an inner tubular body 50.
54 fitted in the upper through window 53 of the outer cylindrical body 5
2 and the annular step portion 55 provided so that the ball 54 can escape to the inner periphery of the upper end 2. First, the vise B is placed on the receiving member 46 and the downward protruding end of the pull stud 13 is fitted into the inner cylindrical body 50. After that, when a pressing force in the extension direction is applied to the third cylinder 48, the inner peripheral surface of the outer tubular body 52 contacts the outer peripheral portion of the ball 54 and pushes the ball 54, so that the outer periphery of the downward protruding end of the pull stud 13 is reduced. A part of the outer circumference of the ball 54 is fitted into and engaged with the annular groove 37 of. As a result, the ball 54
The downward protruding end of the pull stud 13 is clamped via the.

With the above structure, first, when the rotary table 1 is stopped, the holding vise B for the work A is placed on the receiving member 9 at one position.

After that, when the rotary table 1 intermittently rotates and stops, the arm 23 is lowered while rotating the ball screw 27 by the operation of the second servo motor 26, and when the arm 23 reaches the most lowered position, the second servo motor 26 is moved. 26
Of the pull stud 13 is clamped by the second clamp device 29.

The arm 23 is raised while the ball screw 27 is rotated by the operation of the second servo motor 26. At this time, since the pull stud 13 is clamped by the second clamp device 29, the vice B also rises.

When the arm 23 reaches the set position (solid line position in FIG. 3), the operation of the second servo motor 26 is stopped, and then the operation of the first servo motor 20 is started to move the ball screw 21. The traveling body 18 is moved forward by the rotation, and when the traveling body 18 reaches the set position (the position indicated by the chain line in FIG. 3), the operation of the first servomotor 20 is stopped.

After that, while the ball screw 27 is rotated by the operation of the second servo motor 26, the holding vise B is lowered together with the arm 23, and when the arm 23 reaches a predetermined position, the operation of the second servo motor 26 is stopped. .

At this time, as shown in FIG. 5, the downward protruding end of the pull stud 13 is fitted into the first clamp device 47.

After that, after the downward protruding end of the pull stud 13 is clamped by the first clamp device 47, the upward protruding end of the pull stud 13 is released by the second clamp device 29, and then the arm 23 is raised and retracted. Let

For the work after the wire electric discharge machining, first, the ball screw 21 is rotated by the operation of the first servomotor 20 to cause the traveling body 18 to travel to a predetermined position, and then the second work.
By operating the servo motor 26, the ball screw 27 is rotated to lower the arm 23 to a predetermined position, and the second clamp device 29 clamps the upward protruding end of the pull stud 13 (at this time, the first clamp device 47 pulls Release the clamp on the downward protruding end of the stud 13).

Then, after the ball screw 27 is rotated by the operation of the second servo motor 26 to raise the arm 23, the ball screw 21 is rotated by the operation of the first servo motor 20 to move the traveling body 18 together with the arm 23. While moving the ball screw 27 by the operation of the second servo motor 26 after the backward movement is stopped and the arm 23 is lowered,
The vise B is placed on the empty receiver 9.

After the vise B is placed, the clamp of the upward protruding end of the pull stud 13 by the second clamp device 29 is released, and the arm 23 is raised.

Worked work A placed on the receiving member 9
Is taken out when the intermittent rotation of the rotary table 1 is stopped.

[0036]

As described above, according to the work supply apparatus of the present invention, the work can be automatically supplied to the wire electric discharge machine and the work can be easily positioned.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged front view showing the main part of the same.

FIG. 4 is an enlarged vertical sectional front view showing a clamp device.

FIG. 5 is a partially cutaway enlarged front view of a wire electric discharge machine with a vise clamped.

FIG. 6 is an exploded perspective view of the vise.

[Explanation of symbols]

 1 rotary table 2 seat 9 receiver 13 pull stud 14 through hole 15 through hole 16 pin 17 through hole 18 traveling body 19 rail 20 first servo motor 21 ball screw 22 nut 23 arm 24 pillar material 25 rail 26 second servo motor 27 Ball screw 28 Nut 29 Second clamp device 30 Cylinder 31 Through hole 32 Cylindrical body 34 Through window 35 Ball 36 Annular step 37 Annular groove 41 Wire electric discharge machine 42 Working table 46 Receiving tool 47 First clamping device 48 Third cylinder 49 Through hole 50 Inner tube body 51 Piston 52 Outer tube body 53 Through window 54 Ball 55 Annular step

Claims (1)

(57) [Scope of utility model registration request] 1. A downwardly projecting end of a pull stud of a work holding vise, which has pull studs of which both ends project upward and downward, and which is provided on a work holding vice for detachably holding a work and a seat for storing and supplying the work. Work to perform machining with a mounting receiver for mounting this work holding vise and a wire electric discharge machine with an upward hole into which the downward protruding end of the pull stud is inserted. A first clamp device provided on the table, having an upward hole into which the downward protruding end of the pull stud of the wire holding vise is inserted, and detachably fixing the downward protruding end of the pull stud inserted into the upward hole. And an arm that is numerically controlled to move between the pedestal and workbench, and a downward arm that is provided on this arm and that inserts the upward protruding end of the pull stud of the wire holding vise A second clamp device having a hole and detachably gripping an upward projecting end of the pull stud inserted into the downward hole, wherein the work holding vise and the first clamp device have an upward facing first clamp device. When the downward projecting end of the pull stud inserted into the hole is pulled in and fixed, an unevenness that fits with each other is formed, and when the second clamp device is moved to the mounting receiver of the seat by the arm, , Gripping the upward projecting end of the pull stud of the work holding vise, and then moving it from the base to the work table by the arm, and the downward projecting end of the pull stud of the work holding vise upwardly of the first clamping device of the work table. When it is inserted into the hole, it releases the upward projecting end of the pull stud, and the first clamping device has a pull stack inserted in the upward hole of the first clamping device. A work supply device for a wire electric discharge machine that pulls in and fixes the downward protruding end of the blade.