WO1984002485A1

WO1984002485A1 - Electrode guiding apparatus for wire-cut spark erosion machine

Info

Publication number: WO1984002485A1
Application number: PCT/JP1983/000451
Authority: WO
Inventors: Kiyoshi Inoue
Original assignee: Inoue Japax Res
Priority date: 1982-12-22
Filing date: 1983-12-22
Publication date: 1984-07-05

Abstract

An electrode guiding apparatus for a wire-cut spark erosion machine, and more particularly, an improvement in a die-type electrode positioning apparatus provided at a position closest to a workpiece and employed for regulating the position of a part to be machined. The electrode guiding apparatus has a die-type guide provided in a working fluid. In addition, around a member (122) or guide bore (121) for regulating the passage of a wire electrode (2), there are provided a plurality of means (124) for taking out the heat generated through the the friction between the member (122) or guide bore (121) and the wire electrode (2) and the heat conducted from the wire electrode (2), for well cooling the die-type guide, thereby to improve the machining accuracy in, mainly, a high-load machining.

Description

Electrode planning equipment for wire cut electric discharge machine

The present invention relates to an electrode guide device in a wire-cut electric discharge machine, and more particularly, to a die which is provided at a position closest to a workpiece and is used to define a position of a portion for performing machining. The present invention relates to the improvement of a metal-type electrode positioning device. Background technology

Wire-cut electric discharge machines perform machining using wire electrodes that travel on the path from the wire electrode supply rail to the surface reel or surface storage box. It is.

Generally, in a wire-cut electric discharge machine, a pair of opposed die-types is used to set an electrode path that passes through a space for moving a workpiece in order to perform machining. The electrode positioning guide is provided on one axis orthogonal to the direction in which the workpiece moves.

While receiving a predetermined tension, the wire electrode is moved at a constant speed in a fixed direction along a path set between the pair of die guides, and the supplied machining fluid is supplied. And the action of the voltage pulse cuts the workpiece to be processed and fed relatively in a direction perpendicular to the path.

In recent years, wire-cut electric discharge machines have been gradually increasing the load and high-speed machining, and the demands on the machining accuracy have also become increasingly severe.

Recently, especially large and thick workpieces have been

OMPI Processing is becoming necessary.

In order to meet these requirements, it is necessary to move the wire at high speed under high tension.

On the other hand, in order to increase the positioning accuracy of the wire electrode, the wire electrode should be provided at the inner side of the die hole through which the wire electrode is passed and the position is determined, and at the outer diameter of the wire electrode. It is necessary to keep the reference as small as possible.

However, since a large number of wire electrodes are destroyed, it is not appropriate to use a specially high-precision wire mainly from the viewpoint of cost. It is desirable that the tolerance of the wire of the general-purpose riot material is the same as the desirable tolerance of the clearance to be provided between the die and the wire electrode, or Greater than that. "

Such a situation causes a problem when the wire electrode is positioned with high accuracy and moved at high speed. That is, if this is intended, the die-type guide will immediately generate considerable frictional heat.

The supply of the voltage pulse to the wire electrode for wire-cut electric discharge machining is performed by using a line-shaped electric wire provided on each of the pair of guides and a line of the work body. However, the average current is often set to a value close to the permissible limit value, so that the Joule heat generated by energization becomes considerably large, and Therefore, despite the fact that the electrode is cooled, the temperature of the electrode becomes considerably high, and furthermore, a considerable amount of heat is generated when the workpiece is processed by electric discharge. After that, the wire electrode becomes even more powerful.

The wire electrode that has been heated to a high temperature by the heat distributes the retained heat to the die-type guide with which it comes into contact.

O PI

, WIPO one, ^ Due to the processes described above, the heat applied directly and indirectly to the die-type guide raises various problems.

The first is that if this frictional heat is transmitted to the arm supporting the die-type guide, the position of the die-type guide itself will be disturbed, and the positioning accuracy will be reduced. Secondly, the durability and life of the die guide itself is reduced, and the material of the wire electrode is unfavorably affected. As a result, the disconnection accident rate is increased. Third, the average current of the machining current pulse, which is also the cause of heat generation, is limited. However, if the moving speed of the wire electrode is slowed down, particularly when processing a thick workpiece or when processing under consumable conditions, the wire electrode may be worn out. Since the difference in shape between the top and bottom of the workpiece exceeds the allowable range, the desired processing strength cannot be obtained.

In recent years, the machining speed of wire-cut electric discharge machining has been rapidly increasing, but nevertheless, even higher speeds have been increasingly demanded. To meet this requirement, the amount of power supplied to the wire electrodes, in other words, the machining average current, must be as large as possible. The height of the wire electrode passing therethrough is even higher.

Therefore, in order to solve these problems, a die guide is provided on one side of the supplied nozzle filled with the working fluid, or the working fluid jet is formed by using an appropriate nozzle or the like. It has been proposed to cool by spraying.

However, according to the study of the present inventor, it has been found that the die-type guide is not always sufficiently cooled by this conventionally known method.

According to the present invention, the die guide is almost completely cooled.

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O FI In addition, since the wire electrode passing therethrough is cooled more completely and efficiently, the wire electrode can be moved at a calendar higher speed than before, and It is possible to improve the efficiency by increasing the processing average current without impairing the processing accuracy, and to improve the durability and life of each mechanism. Disclosure of Kishimei

The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a wire capable of reliably cooling a die-shaped guide while having a simple structure. An object of the present invention is to provide an electrode planning device for a Yakatsu electric discharge machine.

Thus, the gist of the present invention is to generate or conduct as described above around the members or guides that define the passages of the poles of the die guide. In other words, a plurality of means for transferring and dissipating the generated heat into the working fluid is provided.

In one practice of the present invention, the cooling of the rush between the outer peripheral surface of the small die guide having a circular die hole and the grip surface of the die guide of the holder that holds it was performed. A water passage is provided to ensure that the die guide is cooled together with the passing wire electrodes.

In another embodiment of the present invention, a die-shaped guide itself is in contact with one R cylinder, and circumscribes each other, contacts with the inner wall surface of the cylinder, and has a plurality of radiation guides arranged in the same shape. The position of the wire electrode is regulated by the respective spheres in the same manner as the cylindrical body, and the coolant flows between the wire electrode and the sphere and between the spheres. A path is formed.

In still another embodiment of the present invention, a guide having a non-P3-shaped die hole having a triangular shape, an equal strain shape, or the like is used. .

In still another embodiment, a die guide is supported.

OMPI

D Numerous cooling water ducts or flow holes are provided in the member. In still another embodiment, a plurality of high-efficiency heat transfer elements, ie, heat pipes, are disposed inside a member that supports the die guide.

Thus, with the above configuration, the die-type guide cools the wire electrode despite the fact that the wire electrode contacts and moves at a high speed under the action of a strong tension. The temperature is maintained at a level slightly higher than that of water, thereby preventing troubles caused by the die-type guide, increasing the machining average current, and improving machining accuracy. Level can be maintained. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a longitudinal sectional view showing a main part of a wire-cut discharge heating device to which the present invention is applied.

FIG. 2 is a vertical cross-sectional view showing a conventional electrode guide device, and FIG. 3 is a vertical cross-sectional view showing one embodiment of the electrode guide device according to the present invention (DI-ΠΙ cut line in FIG. 4). ),

FIG. 4 is a schematic cross-sectional view of the electrode guide device shown in FIG. 3 (section line IV-IV),

FIG. 5 is a longitudinal sectional view showing one embodiment of another electrode guide device (a VI-VI cutting line in FIG. 6),

FIG. 6 is a cross-sectional view (V-V cutting line) of the electrode forming device shown in FIG.

FIG. 7 is a longitudinal sectional view showing another embodiment (a section line VII-VII in FIG. 8),

Fig. 8 is a cross-sectional view of the electrode guide device shown in Fig. 7 (cutting line),

FIG. 9 is a longitudinal sectional view showing the configuration of still another electrode guiding device,

OMPI FIG. 10 is a schematic sectional view showing the configuration of still another electrode forming apparatus, FIG. 11 is a longitudinal sectional view showing the configuration of still another electrode forming apparatus, and FIG. A schematic cross-sectional view showing an example (X in FIG. 13)

1-Xm cutting line),

FIG. 13 is a longitudinal sectional view of the electrode guide device shown in FIG. 12 (X

II-Xn cutting line),

FIG. U is a perspective view showing one embodiment of another electrode forming device,

Fig. 14 is a vertical sectional view of the electrode guide device shown in Fig. 14 (X

V-XV cutting line),

FIG. 16 is a longitudinal sectional view showing still another embodiment,

FIG. 17 is a schematic cross-sectional view of the electrode forming device shown in FIG. 16 (X

¾ one X ¾ cutting line),

FIG. 18 is a vertical cross-sectional view showing the configuration of still another electrode ratio measuring apparatus, and FIG. 19 is a schematic cross-sectional view of the electrode forming apparatus shown in FIG. 18 (X

K—XK cutting line),

FIG. 20 is an enlarged sectional view in the hand direction showing the structure of a heat pipe used in the electrode guide device shown in the preceding two figures. The best form to carry out

FIG. 1 shows a main part of a known wire-cut electric discharge machining apparatus to which the present invention can be applied, that is, a workpiece to be machined, a wire electrode which has been machined, The configuration of a part that is composed of a shower line, a working fluid nozzle, and the like that line up the wire electrode is shown.

Thus, in the figure, 1 is an upper arm of a known wire-cut electric discharge machine, 2 is a wire electrode, 3 is a workpiece, 4 is a lined electric screen,

5 is the nozzle body, 6 is the holder for supporting the die guide 61,

7 is a nozzle.

WIPO, ^ y> In addition, although only a part is shown in the figure, the lower arm, the lined electric shower or a roller instead of it is shown in the lower part of the figure almost symmetrically with the arms 1 to 7 of the upper lavatory. In addition, known components such as a nozzle body 5 nose, a guide holder 6 ^Λ , and a nozzle 7 z are arranged.

Since this lower component substantially corresponds to the upper component, the following mainly describes only the upper component.

In this wire-cut electric discharge machine, the machining fluid is jetted and supplied between the portion between the nozzles 7 and 7 z of the wire electrode 2 and the workpiece 3. The electric discharge machining is performed by applying a voltage pulse.

The zener electrode 2 is guided along a passage set on the inside of the upper arm 1 or on the surface thereof from a lined reel provided on a power ram or the like (not shown) of the apparatus main body. It extends downward through the tension roller and guide roller 11 (not shown) provided in the arm 1 and is symmetrical to the above-mentioned guide roller 11 at the lower arm (not shown). The lower guide roller provided on the shaft is taken up by a diameter, and further via a not-shown capstan or take-up roller, etc., to a take-up reel or surface provided on a force ram, etc. Move to container.

The L-shaped support member 13 is attached to the arm 1 so as to be able to move up and down, and is moved up and down through a screw device 11 which is moved by a motor 12 to a desired position. Is held.

On the front surface of the lower end portion of the support member 13, there is provided a generally cylindrical lined electric shower 4 made of cemented carbide for the purpose of applying a voltage pulse in contact with the lead electrode 2. Wire electrode to move between rollers

Touch 2.

A hollow cylindrical nozzle body 5 is defined at the lower end of the support member 13 or attached so that the position can be adjusted minutely as needed.

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, / W IPO y It is.

Openings 51 and 52 through which the wire electrode 2 passes along the central axis are formed substantially at the upper and lower end surfaces of the nozzle body 5, respectively.

Thus, an electrode forming device 100, which is an object of the present invention, is provided on a part of the nozzle body 5.

The electrode projecting device 100 has a guide holder 6 fixed substantially coaxially to the nozzle body 5 or a micro-position adjustable as required, and a tip end of the extruded body 3 side. And a die-type positioning guide 61 which is held.

The guide holder 6 is a cylindrical body whose lower half is narrower than the upper half, and at the lower end thereof is provided a positioning guide 61 by which the passage path of the wire electrode 2 is determined. Can be -A nozzle to which a hose 53 for supplying a processing fluid is connected is provided at an upper portion of the nozzle body 5, and the processing liquid is supplied from the nozzle 53 to the nozzle body 5.

The nozzle 7 is a hollow H cylinder having an appropriate dimension and having a flange 71 at one end, and the cylindrical portion is slidably fitted into the opening 52 at the lower end of the nozzle body 5. The tip of the workpiece 3 is opposed to the surface of the workpiece 3 with an interval determined according to the supply force and flow rate of the machining fluid.

The machining fluid cools the positioning guide 61 and the wire electrode 2 inside the nozzle body 5, and on the other hand, moves the nozzle 3 from the nozzle 7 toward the workpiece 3 along the wire electrode 2. And the other side is injected upward from the upper opening 51 so as to cool the power supply shoe 4 and the wire electrode 2.

The workpiece 3 is mounted on a processing table 31, and the table 31 includes a motor 32 controlled by a numerical controller or the like. 33 allows the wire electrode 2 to move along a predetermined path on a plane perpendicular to the central axis of the wire electrode 2.

Therefore, in this wire-cut electric discharge machine, it is considered that the cooling of the upper and lower lines or the roller and the wire electrode 2 moving between them is very important. However, the founders of the present invention discovered that not only such cooling but also cooling of the positioning guide 61 was also extremely important.

Conventionally known guide holders 6 are provided with a large number of fluid flow holes 6a, 6a on the side surfaces thereof in order to prevent dead stock of machining fluid from being generated therein. Although these can prevent the machining liquid from staying in the guide holder 6, they are not very effective for effectively cooling the positioning guide 61.

The reason is explained in Figure 2.

FIG. 2 is a partially enlarged cross-sectional view showing a configuration of a widely used positioning guide 61. The positioning guide 61 includes a diamond and a sapphire having a guide hole 62a at the center. It consists of a die 62 made of cemented carbide such as ear, agate, or cemented carbide, and a metal housing 63.

In the case of proposal 62a, the diameter of the upper and lower openings is large and wide, but the center is an electrode path regulating portion having substantially the same diameter as the diameter of the wire electrode 2. The electrode 2 is configured so as not to be affected by the deviation or vibration of the path set by the guide roller 11 or the like.

Usually, a clearance of about 0.002 to 0.005 mm is provided between the outer peripheral surface of the wire electrode 2 and the inner wall surface of the die hole 62a, and a loose fit is provided. That is, it is desirable to fit the gap.

However, trying to achieve such an ideal clean-up poses several problems. One of them is that the cooling of the positioning guide is insufficient.

As shown by the arrow in FIG. 2, even if the machining fluid flows from above or below the positioning guide 61 toward the die 62, the flow in this portion becomes stagnant and the wire Only a small portion of the clean clearance between the electrode 2 and the dice 62 can flow into the area of the clear lance between the electrode 2 and the dice 62, so that the surface of the wire 2 and the dice 62 There is not much difference from cooling and.

That is, since there is only an extremely small clearance between the wire electrode 2 and the projecting hole 62a as described above, the wire is supplied near the wire electrode 2 and the die 62. The machining fluid is not easily renewed, and therefore, even if the positioning guide 61 is provided in the fluid filling the nozzle body 5 as shown in FIG. Nozzle: It was not possible to sufficiently cool the die 62 with the machining fluid flowing through the body 5 mm.

The second problem is that tight tolerances must be required for the wire electrodes used.

Although the inside diameter of the die hole 62a can be machined with extremely high precision, brass and other wire rods with a diameter of about 0.05 to 0.30 mm used as the It is not very accurate, so there are some problems when trying to maintain the above-mentioned clearance. .

First of all, it is necessary to select a wire electrode 2 with a particularly high precision.

Next, the wire electrode 2 is generally stretched by about several percent between the cabin and the tension roller, and generates heat and crepe during discharge. Although it is deformed by the influence, it is extremely difficult to accurately grasp these conditions and keep them in the expected state at all times. It is.

On the other hand, from the point of view of cost, the use of general-purpose ones often leads to excessive cleanliness or, conversely, negative, ie, interference, When the ear electrode 2 passes through the die hole 62a, the wire is somewhat drawn.

From the standpoint of machining accuracy, cleanliness must be as small as possible, and in terms of cost, the allowable range of cleanliness will be expanded more widely. This is required.

Therefore, in order to pursue the processing accuracy and cost to the utmost, it is necessary to accept a very small or slightly negative stop fit as long as the workability is not impaired.

The wire electrode 2 passes through the pair of upper and lower die holes under the action of considerable tension, and at that time, the passage path is regulated. Therefore, the wire electrode 2 is connected to the die hole. Even if the fit between them is a loose clearance fit with an ideal clearance, their mutual contact pressures are quite high and therefore the friction generated in that area The heat is also considerable, but the smaller the clearance, the greater the amount of heat generated.

Further, it is assumed that machining current is flowing through the wire electrode 2 between the upper and lower lined electric showers and the workpiece 3, and that the lined electric shower 4 is cooled by the jet of machining fluid. The temperature of the wire electrode 2 itself is also considerably high, and as described above, the wire electrode 2 and the die hole 62a The clearance between these two parts is extremely narrow, so a large amount of machining fluid flows into this clearance and wets the contact friction surfaces of both parts, providing sufficient lubrication and cooling. We do not do it.

Therefore, the contact between the wire electrode 2 and the die 62 is almost zero. It is close to the contact, and the dust 62 generates considerable heat and becomes hot.

This frictional heat has an adverse effect on the wire electrode 2 first. That is, when the wire electrode 2 passes through the die 62, it is partially or wholly rapidly heated or quenched, and is transformed into an undesirable undesired state.

Next, this frictional heat is transmitted to the guide holder 6 through the housing 63 together with the Joule heat generated by the current flowing through the wire electrode 2, so that the position of the die 62 is reduced. Let your worship go.

And thirdly, it promotes wear of the expensive positioning guide 61 and shortens its life.

Hereinafter, preferred embodiments of the present invention will be described. '' In FIGS. 3 and 4, 106 is a guide holder similar to 6 described above, 120 is a die 122 having a die hole 121 in the center, and a die 122 is housed inside. And positioning arrows 130 and 131, which indicate flow lines of the machining fluid flowing poorly through the positioning guide 120.

Thus, on the wall of the center hole where the housing 123 grips the die 122, there is a three-section, axial fan-shaped cleaner 124 for the cooling water flow! Therefore, the water flow 130 flowing down from above the guide holder 106 flows downward through the groove 124, and at this time, the die 122 and the portion concerned are separated. The passing wire electrode 2 is sufficiently cooled.

The embodiment shown in FIGS. 5 and 6 is a modification of the above-described embodiment, and the housing 123 has three claws 125 and 125 for holding the die 122 at the center thereof. And the groove 124 between these claws serves as a cooling water flow path. Also in this embodiment, since the water flow 130 flowing down from above the guide holder 106 flows downward through the groove 124, the die 122 and the wire electrode passing therethrough are formed. 2 are both cooled sufficiently.

The positioning guide 220 shown in FIGS. 7 and 8 is composed of four spheres 223, 223 provided inside a cylindrical housing 222, and is attached to the lower end of the guide holder 206. I have. The spheres 223, 223 are held in a plane so as to radiate and circumscribe one another, and are initially inserted into a housing 222 made larger or larger in diameter than shown. The housing 222 is then swaged from the outside to create a positioning guide 220 as shown.

Thus, in the present embodiment, the diameters of these spheres are set so that the wire electrodes 2 can be passed through and held between these spheres. In other words, a die for directly storing the wire electrode 2 is composed of these spheres 223, 223.

The wire electrode 2 is held coaxially with the center axis of the cycle in which the above four spheres 223, 223 are arranged, and between each sphere and the wire electrode 2 and the housing 222. Each of the cooling water channels 226, 226 is formed in a pseudo triangular shape surrounded by three arcs.

FIG. 9 shows a modification in which the four spheres 223 are arranged in two.

In these embodiments, the flow from above the guide holder 206 indicated by the arrow 227 passes through the cooling water channels 226, 226 without stagnation, and is indicated by the arrow 228. The spheres 223, 223 and the wire electrode 2 are appropriately cooled down. FIGS. 10 and 11 show still another modification of the above-mentioned ball type die guide. In the figure, 229a is a stopper attached to the cylindrical housing 222, 229b and 229b are distance beads, and 229c is a distance provided for the fastener 229d. It is a piece.

FIG. 10 shows an example in which the spherical bodies 223, 223 are arranged in three bottles in each stage, and FIG. 11 shows an example in which the spherical bodies 223 are arranged in three stages. These spheres 223, 223 may be gently held so that they can move on the surface.

Next, FIG. 12 and FIG. 13 will be described. In this embodiment, a die having a non-H-shaped die hole is employed.

In the figure, reference numeral 306 denotes a guide holder, 320 denotes a positioning guide comprising a die 321 having a regular triangular die hole having a throat cross-section rounded at the top, and a housing 322 thereof. , 323 and 324 are arrows indicating cooling water flow.

In the throat, which is located approximately at the center of the thickness, the dice hole has a triangular shape with a rounded apex, and both sides of the throat gradually expand and deform. It has a curved surface 321b that forms a rectangular opening. The path of the wire electrode 2 is determined by the middle point 321 of each side 321a of the above triangle, and the vertex and the wire electrode are determined. A space 321d between 2 and 3 forms a cooling water flow path.

The effect of this will be obvious now.

In this embodiment, the cross section of the throat of the dice hole is a substantially equilateral triangle. However, the shape is not limited to the equilateral triangle, but may be other shapes such as an arbitrary triangle, three convexes or concaves. It may be a figure consisting of R-arcs, a uniform width, a square, a diamond, or another polygon.

Next, the embodiment shown in FIGS. 14 and 15 will be described. The guide holder 401 shown here is substantially the same as the guide holder 6 shown in FIG. 1, and is attached to the [¾] part of the nozzle body (not shown) filled with the machining fluid. At the bottom

OMPI The positioning guide 461 is held, and more cooling water holes 420, 420, 421, 421 and 422, 422 are provided on the side surface thereof.

Thus, these cooling water holes are configured so that the number and / or number of the cooling water holes are increased so as to provide a higher opening ratio as approaching the positioning guide 461. Things.

In the state shown in the figure, the cooling water hole 421 has a slightly smaller diameter than that of the cooling water hole 421, but has a larger diameter, and an inner diameter of the cooling water hole 421 is larger than that of the cooling water hole 421. , So that the machining fluid flowing into the guide holder 410 indicated by an arrow 423 generates a strong flow surrounding the positioning guide 461 near the positioning guide 461. Therefore, stagnation does not occur in this portion, and the positioning guide 461 is sufficiently cooled.

Therefore, it is recommended that such a guide holder be constructed and arranged as shown in FIGS.

The guide holder 41 OA shown here is configured such that the outer diameter of the upper part thereof is the same as the inner diameter of the nozzle body 405. The cooling water holes 42 424 are provided only in the intermediate cone portion and the portion that holds the positioning guide 461. Further, the outer peripheral surface of the holding portion of the positioning guide 461 and the inner wall surface of the nozzle body 405 are provided. A plurality of plate stays-425, 425, which also serve as heat dissipating fins made of a good conductor of heat, are provided in the same shape and are dissipated in the same shape. In addition to securely fixing the holder 41 OA, fan-shaped cooling water passages 454 and 454 are formed therebetween to promote cooling of the positioning guide 461 and the wire electrode 2 in the vicinity thereof. Finally, the embodiment shown in FIGS. 18 to 20 will be described. This uses a heat pipe to cool the positioning guide.

In the figure, reference numeral 520 denotes a positioning guide, which is a cooling device composed of a die 521, heat pipes 528, 528, and heat radiation fins 530, 530.

A housing 522 provided with 524 is attached to the guide holder 506 by an attachment 506c. 506A is a cooling water hole.

As is well known, the heat pipe 528 is provided with a wicked eyebrow 528A at a part of a capsule or a sealed tube made of a good conductor such as aluminum or a net, to which ammonia, water, fluorine, etc. The working fluid 526 is sealed.

In this figure, the heat pipe is set in the housing 522 in order to protect it from mechanical shock. However, in order to increase the efficiency, the heat pipe is connected to the die 521. It is recommended that it be wound around and contacted so that the other end protrudes into the working fluid outside housing 522.

In the present embodiment, for example, even if it is configured that stagnation of the machining fluid occurs above and below the die 521, the frictional heat generated between the wire electrode 2 and the die 521 and the wire electrode 2 generate heat. The heat conducted to the die 521 is quickly dissipated by the heat pipe 528 and the heat dissipating fin 530 into the machining fluid flowing near the positioning guide 521, so that the wire electrode 2 And the die 521 are effectively cooled.

As described above, in the electrode planning apparatus according to the present invention, the above-described squeezing or transmission is performed around a member or a guide hole which defines a passage of the wire electrode of the die-type guide. Means to carry out the generated heat are arranged in the same shape as the last few heats, so that the above-mentioned heat is quickly radiated into the machining fluid without being stored in the die-type guide-

OMH

o ノ One of one.

Note that, in order to more reliably achieve the object of the present invention, the configurations or ideas described in the above embodiments may be appropriately combined so as to complement each other.

The configuration of the present invention is not limited to the above-described embodiments, and the scope of the present invention should be limited only by the following claims. Industrial applicability

According to the present invention, since the die-type guide and the wire electrode of the wire-cut electric discharge machine are more completely and efficiently mined, the wire electrode is formed. Can be moved one calendar year faster than before, the machining speed can be improved by increasing the machining average current without impairing machining accuracy, and the durability of each mechanism It has a significant economic benefit if used industrially, as it will improve life and service life.

Claims

The scope of the claims

1. Each consists of a die-type guide and a guide holder that supports the die-type guide, and is used to set the position of the wire electrode machining part in the wire-cut electric discharge machine. In the pair of electrode forming devices used,

The above electrode, characterized in that a plurality of means for carrying out generated and conducted heat are provided around the member or the hole defining the passage of the wire electrode of the above guide holder. Draft device.

2. The means for transferring heat is a cooling water flow path provided around a member that defines a path for a wire electrode.

2. The electrode planning device according to claim 1.

3. A plurality of spheres arranged in the same shape so that the members that define the wire electrode passages are circumscribed around the wire electrode passages, and the means for transferring heat is provided between the spheres. 3. The electrode guide device according to claim 1, wherein the electrode guide device is a cooling water passage formed in a line with the wire electrode.

4. The electrode guide device according to claim 3, wherein a plurality of members for defining a passage of the wire electrode formed of a sphere are provided.

5. The die guide has a non-circular die hole, and the means for carrying out the heat is a cooling water flow formed on the wall surface of the non-P3 die hole and the rush of the wire electrode. The electrode proposal device according to claim 1, which is a road.

6. The electrode planning device according to claim 5, wherein the throat portion of the die hole has a regular triangular shape with a rounded apex angle.

7. The fluid flowing through the cooling water channel is a machining fluid.

Item 7. The electrode planning device according to any one of Items 6 to 6.

8. The means to carry out the heat is the die type guide of the guide holder.

ΟίΛΡΙ "WIFO, ' 3. The electrode planning device according to claim 1, wherein the device holding portion and a plurality of working fluid flow holes provided in a portion adjacent thereto.

9. The electrode planning device according to claim 1, wherein the means for carrying out the heat is a heat dissipating fin provided in the die-shaped guide holding portion of the guide holder in the same shape as the heat dissipation fin.

10. The claim 1, wherein the means for transferring heat is a heat pipe which is disposed in a uniform shape around a member which defines a passage of the wire electrode of the die-type guide. The electrode guide device as described in the above.