TW200305471A - 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

200305471 V. Description of the invention α) 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 to superhard alloy, forged steel, copper, stainless steel and other workpieces Electrical discharge machining uses tube electrodes to form the starting holes for electrical discharge machining of workpieces. Prior art

The conventional wire electrical discharge machining machine uses the wire electrode moving part to process workpieces such as cemented carbide and satin steel. However, the workpiece for wire electrical discharge machining must have a starting hole for the wire electrode to be initially inserted and started. As a hole processing device at the beginning of hole processing, a fine hole electric discharge machine is known. The micro-hole electrical discharge machine is equipped with a holding device at the front end of the rotating main shaft of the head base to support the tube electrode, and can usually hold the tube electrode of about 0.003 ~ 03, and the processing fluid transported through the rotating tube joint, etc., passes through the tube electrode tube. It is ejected from the front end, discharge is performed between the tube electrode and the workpiece, and the workpiece is punctured to start the hole L.

Japanese Patent Application Laid-Open No. 1-2 4 6 0 2 The electrode exchange device disclosed in the No. 1 publication is equipped with an electric discharge machine. The starting hole processing device is installed at a certain distance from the center of the offline electrode, so that the wire head of the wire electric discharge machine can move. And, relative to the machine of the wire electrical discharge machine, the rotating shaft can be freely installed in the center. The electrode replacement device is equipped with an electric discharge machining machine, which is connected to the fine hole electric discharge machining machine or the starting hole machining device, so that the chuck of the tube electrode is in contact with the bracket. The structure is simple and reliable, and it can be automatically loaded and unloaded. The workpiece is processed with multiple fine holes or 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.

Page 5 200305471 V. Description of the Invention (2) Performing fine holes or starting electrical discharge machining of holes. That is, the above-mentioned electrode exchange device is equipped with an electric discharge machine, which is an electrode exchange device suitable for starting a hole processing device installed on an on-line electric discharge machine. It can automatically exchange tube electrodes for starting hole processing. The electrode performs wire electrical discharge machining of the workpiece through the pores that are processed by the hole processing device, repeats a series of automatic control steps, and automatically cuts the workpiece at multiple locations.

However, the conventional fine-hole electrical discharge machine is juxtaposed with the wire electrical discharge machine, and the slide device, electrode conveying device and servo function of the tube electrode for fine-hole electrical 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. SUMMARY OF THE INVENTION The object of the present invention is to provide a fine-hole electrical discharge machining device that can be attached to and detached from a wire electrical discharge machine, in order to solve the above-mentioned problems, and apply a device such as a slide device, a processing fluid supply device, and a servo function provided in the wire electrical discharge machine. Necessary actions for fine hole electrical discharge machining, such as electrode transportation, machining fluid supply, and servo conveyance, of tube electrodes in a fine hole electrical discharge machine, make the device simple in construction, reduce the number of parts, and make it inexpensive.

The invention relates to a fine-hole electric discharge machining device which can be attached to and detached from a wire electric discharge machine. The wire electrode is used for electric discharge machining of a workpiece set on a table movable in the X-coordinate direction and the Y-coordinate direction. The upper head body is provided so that the supporting rod supporting the upper head body can be connected with the X

Page 6 200305471 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 is installed on a column opposite to the upper line head seat, and can be removed and consumed by the electrical discharge machining of the workpiece. The wire head seat under the wire electrode is rotatably supported by a fine hole head body which can be detachably mounted on the upper head body, and is supported by a rotating mandrel of the fine hole head body, which can be detachably installed on the rotating mandrel. A tube electrode that moves up and down to start a thin hole such as a hole for electrical discharge machining of the workpiece, and a guide bracket that can move up and down the body of the small hole head base to guide the tube 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 electrode, and the processing fluid supplied by the processing fluid supply pipe plug passes the processing fluid provided in the rotating mandrel. The via is supplied 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 electrical discharge machining device, the fine-hole head base system uses the positioning pins of the upper head base body for positioning and can be freely installed.

The fine-hole electric discharge machining device which can be attached and detached to this wire electric discharge machine. As described above, the workpiece is set on a table that can be moved in the X-coordinate direction and the Y-coordinate direction, and the wire electrode is used to guide and guide the workpiece. On-line header, set

Page 7 200305471 V. Description of the invention (4) The main body of the pore head which can be moved in the u-coordinate direction and the v-coordinate direction due to the pore-discharge machining device is known from: fixed on the upper head body, Therefore, EDM can be performed in all areas where wire electrodes can be used for EDM. Therefore, this fine-hole electrical discharge machining device is based on the starting point of wire electrical discharge machining, and the position of the fine-hole electrical discharge machining. And this fine machining ^ 'can share the servo function of the wire electric discharge machine with 1 set of J and f. With a compact structure, the number of parts is reduced, and the embodiment is described. An embodiment of the electric discharge machining device according to the present invention will be described with reference to the drawings.褒 Removed from the pores of the wire electrical discharge machine This pore electric discharge machining device puts two 50 holes for the wires of the wire electrode 30 to pass through.] ^ The pores f f are easy to form as the starting holes. The wire-discharge guarding machine is used to load and unload Z in the direction of the wire-discharge processing machine and the Y block sample (parallel to the paper surface = piece i θ on the workpiece mounting table 14, which is τ: straight, and does not work in the direction of pressure. The upper head body 2 is provided. \ Using% to hold the direction) 1 guide wire electrode 30 is conveyed on the mobile table 51; support ^ = on-line display \ pole 30 discharges the workpiece 1 and consumes the electric wire 2 consumed by enemy processing. Between the obstacle and the display seat 5, the telescoping bag 28 (upward and downward in the figure) moves "the seat 4 ^" to support the upper head seat body 2 and is installed on the column 9. It can remove # 4 下线Pole 3 〇, the workpiece; seat 1 3, with the upper line head 3 EDM machine in the upper head

200305471 V. Description of the invention (5)-Extend to cover the supporting rod 4. The Z-coordinate driving motor 16 is installed on the pedestal 5, and the Z-coordinate driving motor 丨 6 is rotated. Through the transmission device 22, the mandrel 21 with a male thread is rotated, and the nut 24 screwed with the mandrel 21 is Moving up and down, the support rod 4 fixed to the nut 24 is moved up and down relative to the head base 5 through the bearing 26. Bolt of cloth

A processing groove 15 is provided on the table 51 to prevent the processing fluid from scattering. The processing groove i 5 surrounds the fixture on the table 51, that is, the workpiece i set on the workpiece mounting table 丨 4. The processing slot 15 forms a long hole 57 penetrating the lower arm 12 provided on the post 9. A lower head base body 11 is installed at the front end of the lower arm, and a lower head base body u is installed at the lower head body u. The space between the long hole 5 7 of the processing tank 15 and the lower arm 12 is sealed by a sealing device 2 7 to prevent the processing fluid from flying outward and leaking. Therefore, the stage 51 on which the processing groove 15 is carried is configured so that the lower arm 12 can be reciprocated in the X-coordinate direction and the Υ-coordinate direction. The automatic wire supply device of the wire electrical discharge machine is combined with the holder 6 installed on the head 5; and the wire holder 6 installed on the head holder 5 in the wire electrical discharge machine is designed so that the supply tube 20 can be moved up and down to make the wire electrode The fine holes 50 formed in the book space can be guided. 、 Electric tooth workpiece wire EDM has V-coordinate slider 8 and --- ,,, ^^ 丨 υf 裒 Z-coordinate of column 9 in the vertical V-coordinate direction (horizontal direction in the figure) moves with the coordinate slider 7. It can move along the vertical U-coordinate direction (horizontal direction on the figure) of the 2 coordinate direction and the v-coordinate ^ direction installed on the V-coordinate slider 8. When the moving motor 18 rotates, the slider 48 fixed to the V-coordinate slider 8 can reciprocate on the rail 49 on the 9, so that the v-coordinate slider 8 reciprocates in the V-coordinate direction with respect to the column 9. A U-coordinate drive motor 19 is mounted on the V-coordinate slider 8.卩 When the seat post is driven up to 19 rotations, the slider 饳 fixed to the u-coordinate slider 7 is fixed at v

Page 9 200305471 V. Description of the invention (6) ^ standard slider ^ = reciprocating motion on the execution path 47, which constitutes [coordinate slider 7 phase: at 7 f $ slider 8, reciprocating in the u coordinate direction. Since the headrest 5 is fixed to the U coordinate slider 7, the headrest 5 moves integrally with the movement of the U coordinate slider 7. p ^ This fine-hole electrical discharge machining device is installed in the offline discharge processing. The upper thread of the machine tool is ordered + the wire electrode 30 is at a certain distance from the center, and the fine-hole head body 1 10 is the 1 2 position pin 5 6 is determined at The position of the upper head body is fixed by using the fixing bolts. The positioning pin 56 is provided in any one of the fine-hole head base body 10 or the upper body ^ t body 2, and the other side forms a pin hole to be fitted into the positioning pin 56. Two * 'fine-hole head base bodies 10 can often be attached to and removed from the head base body 2 with high accuracy. = 夕 卜 丄 The rotating mandrel 33 is fitted to ί 1 f) f 7 body 1 〇 in a sealed state using a sealing member 38, and is rotatably supported by a fine hole head seat via a bearing 4 2. ^ This fine hole electric discharge machine Removable installation on the rotating I have; # ί discharge machining in the workpiece 1 to start the hole 50 and other fine holes 50, ί ί 29 tube electrode 25, and in order to guide the tube electrode 25, has a guide 52. Because ih support in the relative Slide 5 2 moving up and down on the pore head body 10 = this, this pore discharge machining device puts λ vertical w deviation L in the second pore, which is the processing position of the workpiece 1 around the mine. This fine-hole electric discharge line is used to perform fine-hole electric discharge machining. For solid king items, you can use the tube electrode 25 guide support 29 to guide the tube electrode 25, and the electrode 2 5 is guided by the electrode guide 5 5 Equipped with electrode V 5 Lu Ke discharges workpiece 1 with high precision

200305471 V. Description of Invention (7)

工 细孔 50。 Fine holes 50. On the other hand, the sliding rod 52 can be inserted into the socket head body 10 by the ball bolt groove 54. The male screw 嫂 f provided with the sliding rod 52 is mounted on a fine rotation so that the sliding rod 52 can be moved relative to the nut of ^ σ through the ball bolt groove 54. The machining fluid supply for the fine-hole head base body 10 on the through-hole head base body 10 ^ The wire electrode 3 of the electric processing machine 〇 The collar / domain between the electrode 1 and the workpiece 1 can be used as a wire square fine hole The headstock body 10 is provided with a processing fluid supply pipe plug and the supplied processing fluid. Tube 23. Supply processing to the pore head body 10. Second, the processing fluid for the shoulder tube 23 is connected to the wire electrode 30 and the processing fluid is supplied to the shoulder processing fluid source to supply the processing fluid. ^ = f mechanism, the processing of Luoyang Xuyanxu W 徂 place mountain Putian processing fluid supply pipe 23 through this working fluid supply pipe plug 34 supply. The processing liquid supply pipe plug ^ liquid jet water is supplied to the pipe electrode 25 by rotating the central portion of the mandrel 33 to form a corresponding +1. W 成 之 加加 液流 43, and the rotation mandrel 33 is rotated by a motor 17 mounted on the fine-hole head body 10. The electric power is supplied to the motor 17 through the motor line 39, and the motor 17 rotates, that is, drives the pulley 58 connected to the output shaft of the motor 17, and the rotation of the slide 58 causes the pulley 35 to rotate through the leather τ '. The pulley 3 5 is fixed to the rotating mandrel 33 by a fixed nut 4 q via a key or the like. Therefore, the 'pulley 3 5' is rotated, so that the rotating mandrel 3 3 is rotated. In addition, this fine-hole electrical discharge machining device is an electrode plug 32 which constitutes a chuck portion of a tube electrode 25 by a bracket portion 45 provided with a rotating mandrel 33. The electrode plug 32 is detachably attached to the bracket portion 45 of the rotating mandrel 33, and the tube electrode 25 is attached to the electrode plug 32 using a hex nut 31. When the tube electrode 2 5 installed on the electrode plug 3 2 is consumed by the discharge machining of the fine hole of the workpiece 1, install the consumed tube.

Page 11 200305471 V. Description of the invention (8)-The electrode tube plug 32 of the electrode 25 is detached from the bracket portion 45 and mounted on the bracket portion 45 of the rotating mandrel 33. Rotating mandrel two] 徂 = 3 3 is provided with a power supply lightning brush 37 to supply power to the tube electrode 25. The power-supply brush 37 'is constituted by a power source (not shown in the figure) supplying power through a power-supply line 41' to apply an inter-electrode voltage between the electrode μ mounted on the electrode plug g2 and the workpiece 1. The fine-hole head base body 10 uses the positioning pins 56 to determine the position relative to the upper head body 2. In this state, a fixing bolt, that is, a mounting bolt 4 4 'can be installed on the upper head body freely. 2. Therefore, when the pores such as holes, such as holes, are started in the electrical discharge machining of workpiece 1, the pore head body 10 ′ of the pore discharge machining device is mounted on the head electric body 2 of the wire electric discharge machine. When performing wire electrical discharge machining, the fine-hole head base body is removed from the upper head base body 2 and the workpiece 1 is subjected to wire electrical discharge machining into a predetermined processing shape using the wire electrode 30.

Page 12 200305471 Brief Description of the Drawings Figure 1 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 electrical discharge machine, and is a partial cross-sectional front view of the upper and lower thread heads facing each other. Figure 2 is a partial cross-sectional front view of the fine-hole electric machining device that can be attached to and detached from a wire electric discharge machine. The pipe electrode of the fine-hole electric discharge machining device and the lower thread head stand in an opposite state; Figure 3 is the first FIG. 4 is an enlarged front view of a detailed section of the fine-hole electric discharge machining device; FIG. 4 is a partial sectional side view of the fine-hole electric discharge machining device of FIG. 3.

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Claims (1)

200305471 6. Scope of patent application 1. A fine-hole electrical discharge machining device which can be attached to and detached from a wire electric discharge machine. The wire electrode is used for electric discharge machining of a workpiece set on a table that can be moved in the X-coordinate direction and the Y-coordinate direction. The upper head body provided on the upper head seat is a supporting head seat capable of moving a supporting rod supporting the upper head body in a Z coordinate direction perpendicular to the X coordinate direction and the Y coordinate direction, and on the upper thread holder. On the opposite side, the wire head seat under the wire electrode which is installed on the column and can be removed by the electrical discharge processing of the workpiece is supported by the fine hole head body which can be detachably mounted on the upper head body. The rotating mandrel of the seat body can be attached to and detached from the rotating mandrel and a tube electrode that is moved up and down to discharge the workpiece, such as a hole such as a machining start hole, and a small hole head for guiding the tube electrode Φ is constituted by the guide bracket moving up and down the body. 2. The fine hole EDM device that can be attached to and unloaded from a wire electrical discharge machine, such as in the scope of the patent application, includes a V-coordinate slider mounted on the column and can move in the V-coordinate direction perpendicular to the Z-coordinate direction; and The U-coordinate direction is installed on the V-coordinate slider, and can move in the U-coordinate direction perpendicular to the Z-coordinate direction and the V-coordinate direction, and the head frame is fixed to the U-coordinate slider. 3. If the item No. 1 or 2 of the scope of the patent application can be attached to the fine-hole electrical discharge machining device of the wire electric discharge machine, the fine-hole head body is equipped with a working fluid supply pipe plug, which is connected to the processing fluid supply mechanism and is connected to the line. The electrode supplies machining fluid 1. The machining fluid supplied by the machining fluid supply pipe plug is supplied to the tube electrode through the machining fluid passage provided in the rotating mandrel. _ 4. According to the scope of the patent application, item 1 can be attached to the fine hole electrical discharge machining device of the wire electrical discharge machine, wherein the rotating mandrel is mounted on the fine hole head. Page 14 200305471 6. Scope of patent application The motor of the seat body is rotated. 5. According to the scope of the patent application, item 1 of the fine-hole electric discharge machining device which can be attached to and detached from the wire electric discharge machine, wherein 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 mounted and disassembled on a wire electrical discharge machine, the system of the micro-hole head seat can use the mounting bolts of the upper head body to install and dismount the installer. 7. If the item 1 of the scope of the patent application is for a pore-discharge machining device that can be mounted on a wire-discharge machining machine, the headstock is provided with a supply tube that can move up and down to guide the wire electrode through the pore. 8. If the first scope of the patent application is for a fine-hole electrical discharge machining device that can be attached and detached to a wire electrical discharge machine, the fine-hole head seat system uses positioning pins to determine the position relative to the upper head body, which can be attached and detached for installation. By. Page 15