TWI220401B - Pore electrical discharge device capable of attaching to wire electrical discharge machine - Google Patents

Abstract

Disclosed is a pore electrical discharge device allowing easy installation and removal to a head 2 of a wire electrical discharge machine, without the use of an additional servo, having a simple construction and low manufacturing costs. The pore electrical discharge device is provided on a head 2 of an upper wire head 3 of a wire electrical discharge machine with a freely installed and removed pore head 10. A rotary spindle 33 is rotatably supported on the pore head 10 for removably mounting a pipe electrode 25. A guide holder 29 is provided to guide the pipe electrode 25 such that the pipe electrode 25 is movably supported by the pore head 10.

Description

1220401 V. Description of the invention (1) The technical field to which the invention belongs The present invention relates to a fine-hole electrical discharge machining device, which can be detachably installed with a wire electrical discharge machining machine, and uses wire electrodes for superhard alloys, forged steel, copper, stainless steel, etc. Workpiece electrical discharge machining uses tube electrodes to form the starting holes for electrical discharge machining of the workpiece. Wire discharge machining machines known in the prior art use wire electrode moving parts to process workpieces such as super-hard alloys and forged steel. However, workpieces for wire electrical discharge machining must have a starting hole for the initial insertion of the wire electrode. Beginning of hole processing-A device for starting hole processing is known as a fine hole electrical discharge machine. The pore discharge and processing machine is installed with a holding device at the front end of the rotating spindle of the headstock to support the tube t electrode, which can usually hold a tube electrode of about 0. 3 ~ 03, and the processing fluid transported through the rotating tube joint, etc., through the tube electrode The inside of the tube is sprayed out from the front end portion, discharge is performed between the tube electrode and the workpiece, and the workpiece is punctured to start a hole L. Japanese Unexamined Patent Publication No. 1-24602 discloses an electrode exchange device equipped with an electric discharge machine. The hole processing device is installed at a certain distance from the center of the offline electrode, so that the wire socket of the wire electric discharge machine can move and is opposite to the wire. _ The machine of the electric discharge machine has the rotating shaft installed at the center freely. The electrode exchange device is equipped with an electric discharge machine, which is connected to a fine-hole electric discharge machine or an opening hole processing device, so that the chuck for installing the tube electrode contacts the bracket part, and the structure is simple and reliable, and it can be automatically loaded and unloaded. Plural pores of the workpiece are processed or the hole processing is started, and when the tube electrode is consumed, the consumed tube electrode can be automatically replaced with a new one, and the workpiece fixed on the workpiece table can be continued.

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V. Explanation of ξ (2) Electrical discharge machining of running pores or starting holes, that is, the above-mentioned electrode exchange device is equipped with an electric discharge machining machine. 'The starting hole machining device installed on the online electric discharge machining machine is applicable to the electrode exchange device and can be automatically started. The exchange of tube electrodes for hole processing 'Meanwhile, the wire electrodes of the wire electrical discharge machining machine were used to perform wire electrical discharge machining on the workpiece through the pores that were processed by the hole machining device. The pieces are automatically trimmed at multiple places. However, the conventional fine-hole electric discharge machining machine is juxtaposed with the wire electric discharge machine, and the slide device, electrode conveying device, and servo function of the tube electrode for fine-hole electric discharge machining such as starting holes are performed on the workpiece. In addition to the wire electrode, the sliding device, the wire electrode supply device and the servo function which act on the wire head seat are separately provided. Therefore, the conventional fine hole discharge processing machine has a large device and a high price. The contents can be attached and detached to the detailed issues of the wire electrical discharge machine. The servo function provided by the wire electrical discharge machine is suitable for pole conveyance, processing fluid supply, and servo movement, so that the device can be simply constructed. The purpose of the present invention, The purpose is to provide a hole discharge machining device to reduce the number of parts necessary to reduce the number of parts necessary for the above-mentioned sliding device, processing fluid supply device, and electrical delivery of tube electrodes in a small-hole electrical discharge machine to reduce the number of parts and make it inexpensive. The present invention relates to a wire electric discharge machine

The device uses wire electrodes to perform electrical discharge processing on the guards installed on the stage, so it has an i δ and upper head body to support the upper head body head. With $

1220401 V. Description of the invention (3) A support head that moves in the Z coordinate direction perpendicular to the coordinate direction and the Y coordinate direction, and a wire electrode installed on a column opposite to the upper threaded head seat, and which can be consumed by electrical discharge processing of the workpiece The lower thread head seat is rotatably supported by a rotating mandrel of the fine hole head body detachably mounted on the upper head body, and can be detachably installed on the rotating mandrel. A pipe electrode that moves up and down through a small hole such as a hole in an electrical discharge machining process, and a guide bracket that can be moved up and down in the fine hole head body to guide the pipe electrode. The fine hole head body is provided with a processing fluid supply pipe plug, which is connected to a processing fluid supply means for supplying a processing fluid to the wire and electrode, and the processing fluid supplied by the processing fluid supply pipe plug is processed by the rotation mandrel. The liquid path supplies Φ to the tube electrode. The rotating mandrel is rotationally driven by a motor mounted on the fine-hole head body. A power supply brush is provided on the rotating mandrel to supply power to the tube electrode. The fine-hole head base can be detachably mounted on the upper head body by using mounting bolts. The headstock is provided with a supply tube that can be moved up and down to guide the wire electrode through the fine hole. In this fine-hole electric discharge machining device, the fine-hole head base can be detachably installed by using the positioning pin positioning 5 of the upper head base body. The fine-hole electrical discharge machining device that can be attached and detached to this wire electrical discharge machine. As described in β above, the workpiece is set on a table that can move in the X-coordinate direction and the Υ-coordinate direction, and the wire electrode is guided to the workpiece.上 线头 座 ， Set the upper head

Page 7 1220401 V. Description of the invention (4) It is placed on a slider that can be moved in the U and V coordinate directions. However, the pore head body of the pore discharge machining device is detachably fixed to the upper head body. Therefore, fine-hole electrical discharge machining can be performed in all areas of the machining range where the wire electrode can perform electrical discharge machining on the workpiece. Therefore, this fine-hole electric discharge machining device uses the starting point of the program coordinates of wire electric discharge machining as the fine-hole electric discharge machining position. And this fine hole EDM device can share the servo function, slide device and processing fluid supply device of the wire EDM machine. The device itself can be compactly structured, reducing the number of parts and cost. -Embodiment _ An embodiment of the fine hole | electrical discharge machining device of the present invention which can be attached to and detached from a wire electrical discharge machine is described with reference to the drawings. This fine-hole electric discharge machining device is electro-discharged into a fine hole ‘50, which is a starting hole, for the wire of the wire electrode 30 to pass through. It is a simple type that can be detachably installed in a wire electric discharge machine. The wire electrical discharge machining machine sets the workpiece 1 on the workpiece mounting table 1 4 provided on the moving table 5 1 in the X coordinate direction and the Υ coordinate direction (horizontal direction parallel and perpendicular to the paper surface). In order to use the wire electrode 30 pairs The workpiece 1 is provided with an electric discharge machining, and is provided with an upper head body 2 and an upper head head 3 for conveying guide wire electrodes 30 relative to the work piece; 1 supporting the head head 5 to support the support rod 4 of the upper head head body 2, Move in the direction of the Z coordinate perpendicular to the direction of the X coordinate and the direction of the Υ coordinate— (downward direction on the drawing); and the lower thread head 1 3, which is opposite to the upper thread head 3, is installed on the column 9, and the EDM of the workpiece 1 can be removed The consumed electric wire and pole 300 electric discharge machine is between the upper head body 2 and the head base 5, and the telescoping bag 28

Page 8! 22〇4〇l 5. Description of the invention (5) Extend to cover the support rod 4. The Z-coordinate driving motor 16 is installed on the headstock 5. The Z-coordinate driving motor 16 is used to rotate. Through the transmission 22, the mandrel 21 with a male thread is rotated, and the nut 24 screwed with the mandrel 21 is moved up and down. The solid a is moved from the supporting rod 4 of the screw 4 to the head 5 by the bearing 2 6 up and down. A processing groove 15 is provided on the table 51 to prevent the processing fluid from scattering. The processing sample surrounds the fixture on the table 51, that is, the workpiece 1 set on the workpiece mounting table 14. The 5th working slot 15 forms a long hole 57 penetrating the lower arm 12 provided on the post 9. 12 pieces of lower arm = the lower head body 11 is installed, and the lower head body n is installed with the lower thread head 丨 ^ end. The slot 5 of the slot 15 and the lower arm 12 are sealed with a sealing device 27. The working fluid is scattered outward and leaked. Therefore, the table 5 of the processing slot 丨 5, plus the structure of the lower arm 12 reciprocating in the X coordinate direction and the γ coordinate direction, can be an automatic wire feeding device of the phase electric discharge machine, and is installed on the head. ° Holder 6 Combination, and the wire electric discharge machine is installed on the head base 5, not counting the supply tube 20 can be moved up and down, so that the wire electrode can guide you = the pores 50 formed. To protect the workpiece, the wire electric discharge machine has a V-coordinate slider 8 that can be moved in the vertical V-coordinate direction (horizontal direction on the figure) in the Z-coordinate direction of Ann. ^ Block ^ 7 can be installed along ν The z direction of the coordinate slider 8 and the vertical U direction (horizontal direction in the figure) of the ^ direction are moved. When # 22 达 18 is rotated, the slider 48 fixed to the V-coordinate slider 8 fg == reciprocates on the rail 49 on the column 9, and is reciprocated in the V-coordinate direction by H 疋 on the column Θ. Fu Feng v / 丄 钿 π pieces 8 are opposed to and f sliders 8 are equipped with U-coordinate drive motors 19. When the seat post is driven ^ up to 19, it is fixed to the U coordinate, the plant 7 is moved from 1 to 1! The slider 46 of the 7 / month piece 7 is fixed at ν

Page 9 1220401 V. Description of the invention (6) The reciprocating movement of the slide 47 on the guideway 47 constitutes [1 coordinate slide 7 seat 8 piece 8 and reciprocates in the U coordinate direction. Since the headrest 5 is fixed to the cymbal 7, the headrest 5 moves integrally with the movement of the π-coordinate slider 7. Block 3 Xuan This electrical discharge machining device is installed at a certain distance from the center of the upper head brake field wire electrode 30 of the offline electrical discharge machine. The small hole head body 10 is installed to determine the position of the upper head body. Fixing. The positioning pin 56 is set on either the small-hole head base body 10 or the head body 2-the other side forms a pin hole, which is engaged with the positioning pin 56. The small-hole head base body 10 can often be opposite to the upper side. The headstock body 2 can be attached and detached quickly and accurately. In addition, the rotating mandrel 33 is fitted in a sealed state with a sealing member 38, and the "Tiankong headstock body 10" is rotatably supported by the fine holes through the bearing 42. The head body 10. The fine-hole electric discharge machine can be detachably mounted on a rotating shaft. The shaft 3 3 ′ is used to discharge the workpiece 1 into fine holes 50 such as starting holes, and has a tube electrode 25 that moves up and down. In order to guide the tube electrode 25, there is a guide 1 2 2 ′, which supports a sliding rod 5 2 that moves up and down relative to the pore head body 丨 〇. Therefore, this pore discharge machining device is shown in FIG. 2, Fine-hole electrical discharge machining center 0h using V-coordinate slider 8 , Move the headstock 5 from the center 〇h and the center of the headhead 13 on the line of the deviation L, which is the machining position of the workpiece 1 line electrical discharge machining. Therefore, 'this fine hole electrical discharge machining device is compared with the line electrode 3 0 The entire processing range of EDM for workpiece 1 can be performed with fine-hole EDM using the tube electrode 25. The guide support 29 is provided with an electrode guide 55 for guiding the tube electrode 25, and the tube electrode 25 is an electrode. Guide 5 5 guide, can discharge workpiece 1 with high precision

Page 10 1220401 V. Description of the invention (7) Working fine hole 50. And the sliding hole head body 10. Turn to move the slide bar down. Wires for fine-hole electric processing machines. The fine-hole head tube 2 3 is connected to the line processing fluid supply plus processing fluid supply pipe plug, and the liquid jet water is supplied to the tube electrode 2 5 and the rotating core 17 is rotated. The electric power system is connected to the motor belt, so that the pulley 3 5 is fixed to the rotating mandrel 3 3. In addition, this fine hole 45 constitutes a mounting pipe 32 for detachably mounting a hexagonal nut 3 1 and a mounting pole 25. Since the workpiece moving rod 52 can be moved up and down by the ball bolt groove 54 and the male screw provided by the sliding rod 52 蟫The person is installed in the thin 52 via the ball bolt groove 54, and uses a 4-hole master seat body: [0 上头 座 体 1 10 processing fluid for the application of the electrode between the poles can be added = women's processing fluid supply pipe plug 34, The base body 10 supplies the processing fluid. If # == 7, the processing fluid supply mechanism for supplying the processing fluid to the electrode 30 is supplied by the processing fluid, the processing fluid is supplied from the processing fluid supply pipe 23 through 34. The machining fluid passage formed by the central part of the machining rotating mandrel 33 supplied by the machining fluid supply pipe plug 34 is provided to the motor 17 through a motor line 39 using a motor mounted on the fine-head head body. The motor 丨 7 rotates, that is, the pulley 5 8 of the 17 output shaft, and the slide 5 8 rotates through the skin. The pulley 35 is fixed by a fixing nut 40 via a key or the like. Therefore, the 'pulley 35' can be rotated to make the rotating mandrel 3 3 the electric discharge machining device 32 an electrode plug 32 of the chuck portion of the bracket portion electrode 25 provided by the rotating mandrel 33. The electrode plug is used for the bracket part 45 of the rotating mandrel 33, and the tube electrode 25 is used for the electrode plug 32. When the tube is installed in the electrode plug 32, it is consumed by the discharge processing of the small hole.

1220401

The new electrode plug 3 2 V. Description of the invention (8) The electrode tube plug 32 of the electrode 25 is removed from the bracket portion 45 and the bracket portion 45 attached to the rotating mandrel 33 is removed. The rotating mandrel 33 is provided with a power supply brush 37 for supplying power to the tube electrode 25. The power supply brush 37 is powered by a power source (not shown in the figure), and is configured to apply an inter-electrode voltage between the electrode 25 and the workpiece 1 mounted on the electrode plug 32 through a power supply line 41. A fine-hole head body 10 is used The positioning pin 56 determines the phase Λ position Λ ': In this state, a fixed screw inspection can be used, that is, the mounting bolt 44 can be mounted on the upper head body 2. Therefore, when the workpiece 1 is discharged and a small hole such as a start hole 5 is added, The fine hole is placed on the body !, installed on the wire electrical discharge machine] = 2 set, when the △ hole head is subjected to wire electric discharge machining of the workpiece 1, the fine hole head-the human body 2 is removed and used Wire electrode 30. Workpiece 1 forehead shape. Machining into a predetermined process

1220401 Brief description of the drawings. The first diagram shows an embodiment of the fine-hole electrical discharge machining device of the present invention which can be attached to and detached from a wire electric discharge machine, and is a partial cross-sectional front view of the upper and lower wire heads in an opposing state; This is a front view of a partial section of a fine-hole electrical discharge machining device that can be attached to and detached from a wire electrical discharge machine. The tube electrode of the fine-hole electrical discharge machining device is in an opposite state to the lower thread head; Figure 3 is the fine-hole discharge of Figure 1. An enlarged front view of a partial cross-section of a detail of the processing device; FIG. 4 is a side view of a partial cross-section of the fine-hole electrical discharge machining device of FIG. 3.

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Claims (1)

1220401 VI. Application scope l Ark Uh ^^ '1 · A type of & ^ that can be attached to and detached from a wire electrical discharge machine, using wire electrodes to perform electrical discharge machining on the workpiece set in the X coordinate direction and the γ 彳 & Therefore, it has a seat body that can be moved in two f directions, so that the support that supports the upper body body ^ The upper head set by the line master seat moves in the direction of the z coordinate that is straight with the direction of the Y coordinate: " The coordinate side is opposite to the upper wire head seat, which is installed on the column and can be removed, and the wire head seat is under the consumed wire electrode. The fine hole head body of the workpiece EDM body can be known to rotate freely.拄 = The rotating mandrel mounted on the upper head can be mounted on the rotating core j. The pores of the small head head body can be moved up and down and moved up and down. In order to discharge the workpiece, the tube electrode can be placed in the The top and bottom of the fine-hole head base are described as L and for the guide. Composed of moving guide bracket 2 · If item 1 of the scope of patent application can be installed = processing device, including ¥ seat? The wire EDM machine along the ¥ coordinate square female 2 columns perpendicular to the z coordinate direction can be mounted on the V coordinate slider, and can be installed along the vertical and horizontal directions of the U seat and the U seat. The direction and the V coordinate side are 3 ί ί ί ί, and the head is fixed to the U coordinate slider. The fine hole discharge can be installed in the range of Λ1 or 2 items, which can be attached to the supply plug of the wire discharge processing machine, far away f. The fine hole head body is equipped with a machining fluid, and the machining fluid is connected to the machining fluid supply mechanism. The processing liquid set provided by the wire electrode processing liquid is supplied to the tube electrode through the rotating mandrel 4 ^ ^. Hole discharge plus the scope of application for patent No. 1 玎 Surface mounting device for wire discharge processing machine, wherein the rotating mandrel is mounted on the fine hole head 1220401 6. Scope of patent application The motor of the seat body is turned. 5. If the item 1 of the scope of the patent application is applicable to the pore discharge machining device of the wire electrical discharge machine, the rotating mandrel is provided with a power supply brush to supply power to the tube electrode. 6. If the item 1 of the scope of the patent application is for a micro-hole electrical discharge machining device that can be attached and detached to a wire electrical discharge machine, the fine-hole head base system can use the mounting bolts of the upper head body to attach and detach the installer. 7. According to the scope of the patent application, item 1 can be attached to and disassembled from a micro-hole electrical discharge machining device of a wire electrical discharge machine, wherein the head seat is provided with a supply tube that can be moved up and down, to guide the wire electrode through the fine hole. 8. If the item No. 1 of the scope of the patent application can be attached to a fine φ-hole electric discharge machining device of a wire electrical discharge machine, the fine-hole head base system uses positioning pins to determine the position relative to the upper head body, and can be attached and detached. Installer. · Page 15