JPS60201822A - Automatic demounting apparatus for punched-out part in wire-cut electric discharge machining apparatus - Google Patents

Abstract

PURPOSE:To prevent the formation of projection and recess in the punched-out part of a work by preventing the displacement and falling of the punched-out part of a work by pressing it at a prescribed position and absorbing and lifting the punched-out part by a lifting arm and transferring said punched-out part outside a working apparatus and automatically pulling-out the punched-out part after the completion of working. CONSTITUTION:After the temporary stop of working nearly at the working completion point, the main arm and pressing arm 7 and 7' of a cutting-part holding apparatus 4 are shifted, and a cutting-out part 18a is held by the hands 9 and 9' at the top edge part. After working is restarted, and the cutting part 18a is completely punched- out, working is suspended, and a wire electrode is cut, and a working head or a work 18 is transferred relatively to a departed position. A suspended arm 12 is transferred by the motors 15 and 16, and an electromagnet 14 at the top edge part is closely attached onto the surface of the punched-out part 18a and adsorbed. Then, the hands 9 and 9' are separated from the work 18, and the punched-out part 18a is pulled-out by vertically transferring the electromagnet 14 with respect to the work 18, and dropped to a prescribed position by cutting-off electric power source.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic cutout removal device for a wire-cut electrical discharge machining device.

Normally, when machining a cutting die or the like using a wire-cut electric discharge machining device, at the end of machining, the cutout part falls due to its own weight, and the wire electrode and the workpiece are short-circuited and stopped.

Therefore, when performing the second cut process after extracting and removing the cutout from the workpiece, or when cutting a large number of products from one workpiece, the operation must be stopped and the cutout removed. There is a problem in that it is necessary to start a new work after taking out the equipment, which hinders continuous unmanned operation.

In addition, a protrusion called a protrusion may appear at the end of the cut, and the cutout may shift downward due to its own weight just before the end of the process, causing the wire electrode to be pushed in when the cutout falls. There was a problem in that concentrated discharge occurred when the metal cut into the workpiece, causing dents and scratches.

The present invention has been made based on the above-mentioned viewpoints, and an object of the present invention is to prevent the cutout portion from displacing or falling at the end of machining when machining a cutting die, etc. with a wire-cut electrical discharge machining device. The machine is held in such a way that it can be automatically pulled out after machining is completed, allowing continuous unmanned operation when performing second-cut machining, or when machining multiple products from one workpiece. The purpose is to prevent protrusions called "kei" from forming at the end of the cut, as well as dents and scratches.

The gist of this is that the main body is attached to an XY table or a work table, and the cutout is attached to the main body and the cutout of the workpiece is placed on the front or back side of the workpiece so that the cutout does not displace or fall. a cutout holding device that fixes and holds the cutout portion at a predetermined position or at opposing positions from both the front and back sides of the non-cutout portion by pressing or suction; a drive device for the cutout portion holding device; A lifting arm having a suction means to suck and lift a cutout of a workpiece and transport it to the outside of the processing device, a driving device for the lifting arm, and a driving device for the cutout holding device and the lifting arm. An object of the present invention is to configure an automatic removal device for a cutout part of a wire-cut electrical discharge machining device from a controlling device.

Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 is an explanatory view showing an embodiment of the automatic removal device for the cutout portion of a wire-cut electrical discharge machining apparatus according to the present invention, and FIG. 2 is an explanatory view of the device shown in FIG. 1 viewed from the side.

In Figures 1 and 2, 1 is an XY table, 2 is a work table, 3 is a main body, 4 is a cutout holding device, 5 is a main arm, 6 is an arm joint, 7.7' is a presser arm, 8.
8' is an air cylinder provided at the tip of the holding arm 7 and 7', 9.91 is a hand, 10.11 is a motor, 12 is a lifting arm, and 13 is an air cylinder provided at the tip of the lifting arm 12. 14 is an electromagnet, 15.16 is a motor, 17 is a control device, 18 is a workpiece, 18a is a cutout, and 19.19 is a clamp.

As shown in the figure, when the workpiece 18 side is moved by machining feed with respect to the wire electrode for wire cut electric discharge machining (not shown), the main body 3 is attached to the side end of the work table 2 that is integrated with the workpiece 18, etc. can be attached to.

The cutout holding device 4 includes a main arm 5, an arm joint 6, a holding arm 7.7', an air cylinder 8.8, and a hand 9.
9' and motors 10 and 11.

The main arm 5 is slidably provided on the main body 3 in parallel with the work table 2, and an arm joint 6 is attached to its tip, and a presser arm 7.71 is attached to the joint 6 in parallel with the work table 2. It is slidably provided on the main arm 5 in a direction perpendicular to the main arm 5 by a screw, a rack and a pinion, or the like.

The main arm 5 moves in the axial direction by the drive of the motor 10,
The hold-down arm 7.71 is likewise moved axially by the drive of the motor 11.

An air cylinder 8.8' and a hand 9.9' are provided at the tip of the presser arm 7.7', and each hand 9.9' is moved in the axial direction by the drive of the air cylinder 8.8'. Then, the cutout portion 18a of the workpiece 18 is pressed and held from both the front and back sides with the tip end surface of the hand 9.9' straddling both sides of the processing contour line 18A.

In the above case, the main arm 5 may be fixed to the main body part 3, and the joint part 6 may be slidably provided on the main arm 5 in the axial direction by the motor 10.

The lifting arm 12 is attached to the upper part of the main body part 3, and is rotated by the drive of the motor 15 and moved in the axial direction by the drive of the motor 16.

An air cylinder 13 and an electromagnet 14 are provided at the tip of the lifting arm 12. The electromagnet 14 attracts the cutout 18a with magnetic attraction force, and the air cylinder 13 is driven to move the cutout 18a in a direction perpendicular to the workpiece 18. The cutout portion 18a is lifted and pulled out from the workpiece 18.

The workpiece 18 is clamped to the work table 2 19.19
The work table 2 is installed by XY
It is attached to table 1.

Therefore, the XY table 1 moves based on a predetermined program by a control device (not shown), and the work table 2 moves along with the XY table 1, so that the workpiece 17 is moved along the predetermined contour line 18A. and move.

Motor 10.11.15.16 for moving the cutout holding device 4 and the lifting arm 12 and air cylinders 8.8' and 1 for moving the hand 9' and the electromagnet 14.
3 is controlled by a control device 17.

The operation of the automatic cutout removal device shown in this embodiment will now be explained.

During wire-cut electrical discharge machining along the machining contour line 18A using a wire electrode (not shown), the hand 9.9' provided at the tip of the holding arm 7.7' and the electromagnet 14 provided at the tip of the lifting arm 12 are connected to the main arm. 5 and presser arm 7.7
', and the lifting arm 12 is moved to a position appropriately away from the workpiece 18 by a retraction operation such as movement or rotation.

As the machining progresses, the machining point approaches the machining end point and the machining is temporarily stopped before the cutout portion 18a is displaced by its own weight.

After machining is temporarily stopped, the main arm 5 and presser arm 7.71 of the cutout holding device 4 are moved, and the hand 9.91 provided at the tip of each is used to connect the machining head of the electrical discharge machine, the machining liquid nozzle, etc. (not shown) so that the cutout 18a can be held securely and moved to a position facing the cutting contour 18A of the workpiece 18,
Operate the air cylinder 8.8' to move the hand 9.9' in the direction of the workpiece 18 to hold the cutout 18a and the workpiece 18 from both the front and back sides and hold the cutout 18a so that it does not displace or fall. .

While holding the cutout part 18a, restart the machining and remove the cutout part 18.
After completely cutting out part a, the machining is stopped, the wire electrode is cut, and the machining head or the workpiece 18 is moved relative to the other to a suitably distant position.

Next, the motors 15 and 16 are operated to lift the lifting arm 12.
The electromagnet 14 provided at the tip of the electromagnet 14 is moved to face the center of gravity of the cutout 18a, and the air cylinder 13 is actuated to move the electromagnet 14 until it comes into close contact with the surface of the cutout 18a. is energized to apply magnetic force to attract the cutout portion 18a.

Next, the air cylinder 8.8' of the cutout holding device 4 is activated to separate the hand 9.9' from the workpiece 18, and the motors 10 and 11 are activated to move the main arm 5 and the presser arm 7.71. Move to the original evacuation position.

Next, the air cylinder 13 provided at the tip of the lifting arm 12
The electromagnet 14 is moved perpendicularly to the workpiece 18 to extract the cutout 18a from the workpiece 18, and the motors 15 and 16 are activated to move the lifting arm 12 to remove the cutout. The part 18a is moved to a predetermined position such as outside the work table 2, the power to the electromagnet 14 is cut off, and the cutout part 18a is dropped.

In the above case, an explanation has been added for the case where the wire cut electric discharge machining is temporarily stopped when holding the cutout part 18a by the hand 9.91, but this holding operation is performed when the workpiece 18 It is clear that if the cutout portion 18a is not displaced, there is no need to interrupt the processing described above.

The present invention is constructed as described above, so that when machining a cutting die or the like with a wire cant electric discharge machining device, the cutout part is held so as not to be displaced or dropped at the end of machining, and the machining is completed. This can be automatically extracted later, allowing unattended continuous operation when performing second cutting or when processing multiple products from one workpiece. It is possible to prevent the formation of protrusions, dents, and scratches.

Note that the configuration of the present invention is not limited to the above-mentioned embodiments; for example, the main arm 5, presser arm 7, 71, and lifting arm 12 may be driven by a fluid pressure cylinder, a near motor, etc. Similarly, the air cylinders 8.8' and 13 can be driven by liquid-driven cylinders or motors; It is also possible to use an adsorption means such as an adhesion means that discharges and presses an adhesive to adhere the adhesive.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the automatic cutout removal device for wire-cut electrical discharge machining equipment according to the present invention, and FIG. 2 is an explanatory diagram of the device shown in FIG. 1 viewed from the side. . 1−・−−１−−−−・−−m−・−−１−・−−−
−・−XY table 2−−−−−−−−−−−−−・
−−−−1・−−−−Work table 3−・−−−m
−・・−−−−−−−−−−−−−−−・1 Main body part 4・
-------
−・−−−One main arm 6−−−−−−・−・−・・−・
−−−1−−−−・Arm joint part 7.7−−−−
--------・-1----Press arm 8.81~--
1------------Air cylinder 9.91
・------1-・---111・-Hand 10.11
．． 15.16-------Motor 12-----1・----m-----Lifting arm 13
−・−−−−−・−１−−−−−−−−−−−−−−・
−Air cylinder 14・・−−−−・−−−−−・−・−
---------m-Adsorption means 17・------・-・
−・・−１−−−・−−−１・・−Control device 18・−−
-m--
--All Excluded Patent Applicant: Benjo Japanx Institute Co., Ltd. (+1 company) Agent (7524) Shotabe Mogami

Claims (1)

[Scope of Claims] An automatic cutout removal device for a wire-cut electrical discharge machining machine comprising the components described in items +81 to Tf1 below. (The main body is attached to the alXY table or work table. (b) The cutout holder is attached to the main body and holds the cutout fixed to the non-cutout part to prevent the cutout of the workpiece from being displaced or falling. Device. (C1 Driving device for the cutout holding device. (dl) A lifting arm that is attached to the main body, has a suction means at its tip, sucks and lifts the cutout of the workpiece, and transports it to the outside of the processing device. (e) A drive device for the lifting arm. (fl) A control device that controls the cutout holding device and the drive device for the lifting arm.