KR102157464B1 - Wire guide for electric discharge and the manufacturing method the same and electric discharge system - Google Patents

Abstract

According to one embodiment of the present invention, a wire guide manufacturing method, which is a method of manufacturing a wire guide for guiding a wire maintaining predetermined tension through a winder and an unwinder, includes: a first step of preparing a tip holder part formed as a rotary body rotated around a first rotation shaft; a second step of machining a holder through hole penetrating the tip holder part vertically, wherein the space of the holder through hole is gradually reduced in size from the upper surface to the lower surface of the tip holder part to form an installation space and the space is gradually increased in size from the installation space to the lower surface; a third step of preparing a guide tip formed as a rotary body rotated around a second rotation shaft; a fourth step of machining an outer surface such that at least one part of the guide tip can be formed to be larger than the installation space; a fifth step of machining a guide through hole penetrating the guide tip vertically; and a sixth step of mounting the guide tip in the installation space.

Description

Wire guide for electric discharge processing, manufacturing method and electric discharge processing system thereof

The present invention relates to a wire guide for guiding a wire whose tension is maintained by a take-up device and a take-up device, a manufacturing method thereof, and a discharge processing system using the wire guide.

The wire electric discharge machining is a machining method in which a work piece is cut using a spark generated by causing an electric discharge between a traveling wire electrode and a work piece like a saw blade. Also called wire cut electric discharge machining or wire electric discharge machining.

The workpiece is processed while moving it on the X-Y table of the wire-cutting machine, and wires of Τ0.05~0.mm brass, copper, tungsten, etc. are used. Since complex contour formation can be cut out automatically by NC control, it is used for molds such as press molds and fin processing of fine gaps such as radiators. Computer numerical control (CNC) is essential and the processing precision is 0.1 (=1/1000㎜) maximum.

In general, wire electric discharge machining provides high-precision machining when processing micro-machining or complex shapes that cannot be processed with general machine tools, or when processing super-hard materials that have been heat treated or that are difficult to perform general cutting. It is applied when processing required molds.

Korean Patent Registration No. 10-2018-0019931

It is an object of the present invention to provide a wire guide, a method of manufacturing the same, and a discharge processing system using the wire guide to guide a wire having a certain tension maintained by a take-up device and a take-up device, and to minimize disconnection of the wire.

In the method of manufacturing a wire guide according to an embodiment of the present invention, in the method of manufacturing a wire guide for guiding a wire that maintains a certain tension by a unwinding device and a winding device, a rotating body rotated about a first rotation axis The first step of preparing a tip holder part formed of, penetrates up and down the tip holder part, and the size of the space decreases toward the lower surface from the upper surface of the tip holder part, thereby forming a mounting space, and the space toward the lower surface from the mounting space The second step of processing the holder through hole whose size increases, the third step of preparing a guide tip formed of a rotating body rotated with respect to the second rotation axis, at least a portion of the guide tip is larger than the size of the mounting space A fourth step of processing the outer surface to be formed, a fifth step of processing a guide through hole penetrating the guide tip up and down, and a sixth step of mounting the guide tip to the mounting space.

The second step of the method of manufacturing a wire guide according to an embodiment of the present invention includes a second bent portion of a holder whose size is non-linearly reduced in a first direction from an upper surface of the tip holder toward a lower surface. -Step 1, step 2-2 of forming a first holder parallel part connected to the holder bent part and forming a constant space along the first direction, connected to the first holder parallel part, and the first direction Step 2-3 of forming a first holder inclined portion that linearly decreases the size of the space along the line, and a second holder parallel to the first holder inclined portion to form a constant space along the first direction Step 2-4 of forming an additional portion, step 2-5 of forming a locking portion that is connected to the second holder parallel portion and curved toward an upper surface of the tip holder portion, and is connected to the locking portion, and the first A second-sixth step of forming a second holder inclined portion that linearly increases the size of the space along the direction, wherein the locking portion is, when the penetrating wire is disconnected, the free end of the disconnected wire is caught and the tip It can prevent separation from the holder part.

The fourth step of the method of manufacturing a wire guide according to an embodiment of the present invention includes a 4-1 step of processing a first parallel guide portion forming an outer surface disposed at a first distance from the second rotation axis, and the second 1 Step 4-2 of processing a guide inclined part connected to the guide parallel part and forming an outer surface whose distance gradually decreases toward a second distance smaller than the first distance from the first distance, and the second rotation shaft It may include a 4-3 step of processing the second guide parallel portion forming the outer surface disposed at the second distance from.

The fifth step of the wire guide manufacturing method according to an embodiment of the present invention is a step of processing such that a convex guide curved surface toward the second rotation axis is formed, and the holder bent portion includes a holder convex toward the first rotation axis. A curved surface is formed, wherein the holder curved surface is formed to have a size of a first radius of curvature based on a first center of curvature, and the guide curved surface is directed toward the second rotation axis with respect to the first center of curvature. 1 It can be formed to be bent to the size of the radius of curvature.

The sixth step of the method for manufacturing a wire guide according to an embodiment of the present invention includes step 6-1 of forcibly fitting the guide tip into the mounting space of the tip holder, and the holder curved surface and the guide curved surface are the same. It may include a 6-2 step of being disposed on a curved surface.

The sixth step of the wire guide manufacturing method according to an embodiment of the present invention includes step 6a of applying an adhesive to the first holder parallel portion, the first holder inclined portion and the second holder parallel portion, the Step 6-b of inserting the guide tip into the mounting space of the tip holder and step 6-c of curing the adhesive between the tip holder and the guide tip.

A wire guide according to an embodiment of the present invention is a wire guide for guiding a wire whose tension is maintained by a unwinding device and a winding device, the tip holder part providing a space into which the wire is introduced and a space to be discharged, and A holder mounted on the tip holder and including a guide tip formed of an insulator, wherein the tip holder includes a holder body formed of a rotating body rotated with respect to a first rotation axis and a holder penetrating the upper and lower surfaces of the holder body A through hole is provided, and the holder through hole has a space size that decreases from an upper surface toward a lower surface to form a mounting space, and the space size increases from the mounting space toward a lower surface, and the guide tip, At least a portion is formed larger than the size of the mounting space, so that it can stay without passing through the mounting space.

The holder through hole of the wire guide according to an embodiment of the present invention is connected to the holder bent portion and the holder bent portion, which non-linearly decreases the size of the space along a first direction from the upper surface to the lower surface of the holder body, A first holder parallel portion forming a constant space along the first direction, a first holder inclined portion connected to the first holder parallel portion and linearly decreasing the size of the space along the first direction, the first holder 1 It is connected to the holder inclined part, the second holder parallel part forming a certain space along the first direction and the second holder parallel part, and the size of the space linearly increases along the first direction. It includes a second holder inclined portion, and the guide tip has a guide body portion formed of a rotating body rotated with respect to a second rotation axis and a guide through hole penetrating the upper and lower surfaces of the guide body portion, and the guide body portion , A first guide parallel portion forming an outer surface disposed at a first distance from the second rotation shaft, and a second guide parallel portion forming an outer surface disposed at a second distance less than the first distance from the second rotation axis And a guide inclined portion that connects the first guide parallel portion and the second guide parallel portion, and forms an outer surface whose distance gradually decreases from the first distance toward the second distance, and the guide through hole , It is possible to form a convex guide curved surface toward the second rotation axis.

The holder bent portion of the wire guide according to an embodiment of the present invention forms a holder curved surface that is convex toward the first rotation axis, and the holder curved surface is formed with a size of a first radius of curvature based on a first center of curvature. The guide curved surface is formed to be bent toward the second rotation axis to a size of the first radius of curvature with respect to the first center of curvature, and is disposed on the same curved surface when connected to the holder curved surface, The holder through hole is formed between the second holder parallel portion and the second holder inclined portion, and further includes a locking portion bent toward an upper surface of the holder body portion, and the locking portion, when the penetrating wire is disconnected , It is possible to prevent the free end of the disconnected wire from being separated from the tip holder.

The guide tip of the wire guide according to an embodiment of the present invention is mounted in the mounting space through the holder through hole along the first direction from the upper surface of the holder body, and the guide tip is mounted in the mounting space. In this case, the first guide parallel part may contact the first holder parallel part, the guide inclined part may contact the first holder inclined part, and the second guide parallel part may contact the second holder parallel part. .

In the wire electric discharge machining system according to an embodiment of the present invention, in the wire electric discharge machining system for processing an object into a predetermined shape, a receiving portion providing a space for accommodating an object, is disposed on the upper side of the receiving portion, A unwinding device for unwinding a connected wire, a first wire guide; It is disposed on the lower side of the receiving portion, and connected to the wire unwound from the unwinding device, and includes a winding device and a second wire guide for winding the wire, the first wire guide, between the receiving portion and the unwinding device A wire that is placed standing on and guides the wire unwound from the unwinding device, and the second wire guide is arranged inverted between the accommodating portion and the winding device and guided through the first wire guide. You can guide.

According to the present invention, by configuring the guide tip in contact with the wire to be detachable from the tip holder, only the guide tip is separated from the tip holder during replacement or repair due to damage/damage caused by contact with the wire of the guide tip. Since it can be replaced, it is easy to replace, and it is possible to reduce incidental costs by avoiding unnecessary replacement of the tip holder.

In addition, since the contact surface of the wire with the guide tip is rounded, disconnection of the wire can be minimized.

1 is a schematic view showing an electric discharge machining system according to an embodiment of the present invention.
Figure 2 is a schematic view showing a tip holder of the wire guide according to an embodiment of the present invention.
Figure 3 is a schematic view showing a guide tip of the wire guide according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing a wire guide according to an embodiment of the present invention.
5 and 6 are schematic diagrams for explaining a method of manufacturing a wire guide according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention can add, change, or delete other elements within the scope of the same idea. Other embodiments included within the scope of the inventive concept may be easily proposed, but it will be said that this is also included within the scope of the inventive concept.

In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described with the same reference numerals.

1 is a schematic diagram for explaining a wire discharge machining system according to an embodiment of the present invention.

Referring to FIG. 1, a wire electric discharge machining system 300 (electric discharge machining system) according to an embodiment of the present invention may be a system for machining an object into a predetermined shape.

The electric discharge processing system may include a receiving portion 310, an unwinding device 320, a first wire guide 1a, a winding device 340, and a second wire guide 1b.

The receiving part 310 may provide a space in which an object is accommodated.

The unwinding device 320 is disposed on the upper side of the accommodating portion 310 and can unwind a connected wire.

The first wire guide 1a may be a wire guide 1 to be described later with reference to FIGS. 2 to 6.

The first wire guide 1a may be disposed standing between the receiving portion 310 and the unwinding device 320 to guide the wire unwound from the unwinding device 320.

Here, the first wire guide 1a may be a device for guiding a wire W that maintains a predetermined tension by the unwinding device 320 and the winding device 340. Specifically, the wire W between the take-up device 320 and the take-up device 340 is used for electric discharge machining, and is for using the discharge spark generated by generating electric discharge between the workpieces like a saw blade.

Here, the wire electric discharge machining is a processing method in which a workpiece is cut using a spark generated by causing a discharge between a traveling wire electrode and a workpiece, and the wire must be maintained in a constant tension state without sagging.

The winding device 340 is disposed on the lower side of the receiving portion 310 and connected to the wire W unwound from the unwinding device 320 to wind the wire W.

As described above, the winding device 340 may allow the wire together with the unwinding device 320 to maintain a certain tension.

The second wire guide 1b may be a wire guide 1 to be described later, and is disposed inverted between the receiving part 310 and the take-up device 340 so as to be the first wire guide 1a It is possible to guide the guided wire (W) through.

The first wire guide 1a and the second wire guide 1b may be arranged in a mirror image based on an object accommodated in the receiving part 310.

The first wire guide 1a and the second wire guide 1b will be described in detail with reference to FIGS. 2 to 6.

Figure 2 is a schematic diagram showing a tip holder of the wire guide according to an embodiment of the present invention, Figure 3 is a schematic diagram showing a guide tip of the wire guide according to an embodiment of the present invention, Figure 4 is of the present invention It is a schematic diagram showing a wire guide according to an embodiment.

2 to 4, the wire guide 1 according to an embodiment of the present invention may be a device for guiding a wire in which a certain tension is maintained by the unwinding device 320 and the winding device 340. have.

The wire guide 1 of the present invention may include a tip holder part 10 and a guide tip 20.

The tip holder part 10 may provide a space through which a wire is introduced and a space through which the wire is introduced. The tip holder part 10 includes a holder body part 11 formed of a rotating body rotated with respect to a first rotation axis L1 and a holder through hole 13 penetrating the upper and lower surfaces of the holder body part 11. ) Can be provided.

Here, the first rotation shaft L1 is a virtual axis for describing the shape of the holder body 11 as a rotation body.

The holder through hole 13 may be a hole penetrating the holder body 11 vertically, and the size of the space decreases from the upper surface toward the lower surface to form a mounting space.

In addition, the holder through hole 13 may increase in size from the mounting space toward the lower surface thereof. Briefly, the holder through hole 13 may be formed in an hourglass shape so that the spaces at the upper side and the lower side gradually increase based on the mounting space in which the tip holder part 10 is mounted.

This is to minimize contact with the adjacent holder body 11 when the wire having electrical properties is deformed or driven while in contact with the guide tip 20.

The guide tip 20 is mounted on the tip holder part 10 and may be formed of an insulator. The guide tip 20 may be formed of a material having excellent wear resistance, such as diamond, and thus withstand friction between the wire and the wire, so that the position of the wire can be smoothly implemented.

At least a portion of the guide tip 20 may be formed larger than the size of the mounting space and may stay without passing through the mounting space. Briefly, the guide tip 20 may not pass through the holder through hole 13 and may be mounted on the tip holder part 10 while being sandwiched between (mounting space).

The guide tip 20 may be fixed by being bonded with an adhesive between the holder through hole 13 or fixed to the holder through hole 13 by a force-fitting method.

The holder through hole 13 is sequentially from the upper surface to the lower surface of the holder body 11, the holder bent portion 131, the first holder parallel portion 132, the first holder inclined portion 135, the second The holder parallel portion 134 and the second holder inclined portion 135 may be formed.

The holder bent portion 131 may non-linearly reduce the size of the space along a first direction D1 directed downward from the upper surface of the holder body 11.

Specifically, referring to (b) of FIG. 2, the size of the space of the holder bent part 131 is not uniformly decreased toward the first direction D1, in other words, the holder bent part 131 is It may be formed in a shape that is convexly bent toward the rotation axis L1.

This is to form a continuous curved surface when the guide tip 20 is mounted in the mounting space by being formed in the same shape as the inner surface of the guide tip 20 to be described later.

In addition, the wire unwound from the unwinding device 320 is introduced through the holder bent portion 131 and penetrates the tip holder portion 10. At this time, the holder bent portion 131 is used to facilitate the inflow of the thin wire. It is formed by bending. In addition, when the penetrating wire is deformed while in contact with the guide tip 20, the contact area with the holder bent portion 131 may be minimized.

The first holder parallel part 132 is connected to the holder bent part 131 and may form a certain space along the first direction D1. Specifically, the first holder parallel portion 132 may form a cylindrical space.

The first holder inclined portion 135 is connected to the first holder parallel portion 132 and the size of the space may linearly decrease along the first direction D1.

Specifically, referring to FIG. 2B, the first holder inclined portion 135 may be formed in an inverted truncated cone shape.

The second holder parallel portion 134 is connected to the first holder inclined portion 135 and may form a certain space along the first direction D1. The second holder parallel portion 134 may form a cylindrical space.

The second holder inclined portion 135 is connected to the second holder parallel portion 134 and may increase the size of the space linearly along the first direction D1. Specifically, the second holder inclined portion 135 may have a truncated cone shape.

Here, unlike the holder bent portion 131, the second holder inclined portion 135 may have a constant increase in the size of the space. Since the second holder inclined part 135 forms a space through which the wire flows out, it is not necessary to induce a positional movement of the wire to the guide tip 20 like the holder bent part 131, and it is moved by the deformation of the wire. Since it is only necessary to secure a path, it may be formed such that the size of the space increases as it goes downward.

The guide tip 20 includes a guide body part 21 formed of a rotating body rotated with respect to a second rotation shaft L2, and a guide through hole 23 penetrating the upper and lower surfaces of the guide body part 21 It can be provided.

The guide body 21 may include a first guide parallel part 211, a second distance Y2, and a guide inclined part 213 sequentially from an upper side to a lower side.

The first guide parallel part 211 may form an outer surface disposed at a first distance Y1 from the second rotation shaft L2. The first guide parallel portion 211 may have a shape corresponding to the first holder parallel portion 132. Specifically, the length and curvature of the outer surface of the first guide parallel part 211 are formed to correspond to the length and curvature of the first holder parallel part 132 so that when the two members are in contact, they can be in close contact. .

In addition, a separation distance of the first guide parallel part 211 from the second rotation shaft L2 and a separation distance of the first holder parallel part 132 from the first rotation shaft L1 may be the same.

Here, the second rotation shaft (L2) is a virtual rotation axis for explaining the guide tip 20, when the guide tip 20 is mounted on the tip holder portion 10, the first rotation shaft (L1) ) And overlapping axis.

The second distance Y2 may form an outer surface disposed at a second distance Y2 smaller than the first distance Y1 from the second rotation shaft L2. The second distance Y2 may be formed in a shape corresponding to the second holder parallel portion 134.

In addition, a separation distance from the second rotation shaft L2 of the second distance Y2 and a separation distance from the first rotation shaft L1 of the second holder parallel portion 134 may be the same.

The guide inclined part 213 connects the first guide parallel part 211 and the second distance Y2, and the distance gradually decreases from the first distance Y1 toward the second distance. The outer surface can be formed. The guide inclined portion 213 may be formed in a shape corresponding to the first holder inclined portion 135.

The guide through hole 23 may form a guide curved surface 231 that is convex toward the second rotation shaft L2.

The holder bent part 131 forms a convex holder curved surface toward the first rotation axis L1, and the holder curved surface has a size of a first radius of curvature RL based on a first center of curvature RC. Can be formed.

The guide curved surface 231 is formed to be bent at the size of the first radius of curvature RL with respect to the first center of curvature RC toward the second rotation axis L2 to be connected to the holder curved surface If so, it may be disposed on the same curved surface.

Accordingly, the wire flowing into the upper side of the holder through hole 13 may be moved along the holder curved surface and the guide curved surface 231 to penetrate the tip holder part 10.

The holder through hole 13 may further include a locking portion 137.

The locking part 137 is formed between the second holder parallel part 134 and the second holder inclined part 135 and may be bent toward an upper surface of the holder body part 11.

When the through wire is cut, the locking part 137 may prevent the free end of the cut wire from being separated from the tip holder part 10.

Specifically, the wire connected by the unwinding device 320 and the winding device 340 is connected to the wire guide 1 located adjacent to the unwinding device 320 and the wire guide 1 located adjacent to the winding device 340. The object can be cut while being guided by the object. In this case, if the wire is disconnected while cutting the object, the end of the disconnected wire may be twisted by releasing a certain tension, and the end of the twisted wire is the holder through hole It can be moved along 13) and settled on the locking part 137.

This prevents the end of the disconnected wire from being entangled in the unwinding device 320 or the winding device 340 or entangled with an adjacent wire, making it difficult to reconnect the broken wire.

For reference, the hooking part 137 of the first wire guide 1a of the wire electric discharge machining system 300 takes one end of the disconnected wire, and the hooking part 137 of the second wire guide 1b, The other end of the disconnected wire can be caught and both free ends created by the disconnection can be caught.

Meanwhile, the guide tip 20 may be mounted in the mounting space through the holder through hole 13 along the first direction D1 from the upper surface of the holder body 11.

When the guide tip 20 is mounted in the mounting space, the first guide parallel part 211 is in contact with the first holder parallel part 132, and the guide inclined part 213 is the first holder The inclined portion 135 may be in contact, and the second distance Y2 may be in contact with the second holder parallel portion 134.

5 and 6 are schematic diagrams for explaining a method of manufacturing a wire guide according to an embodiment of the present invention.

5 and 6, a method of manufacturing the wire guide 1 according to an embodiment of the present invention may be a method of manufacturing the wire guide 1 described with reference to FIGS. 2 and 3.

The method of manufacturing the wire guide 1 may include a first step to a sixth step.

The first step may be a step of preparing the tip holder part 10 formed of a rotating body rotated with respect to the first rotation shaft L1 (see FIG. 5A ).

In the second step, the tip holder part 10 is vertically penetrated, but the size of the space decreases toward the lower surface from the upper surface of the tip holder part 10 to form a mounting space. It may be a step of processing the holder through hole 13 whose size of the space increases as it goes toward.

Specifically, the second step may include steps 2-1 to 2-6.

In the 2-1 step, the holder bent portion 131 may be formed so that the size of the space decreases non-linearly along the first direction D1 from the upper surface of the tip holder 10 toward the lower surface ( 5(b)).

In the second step, the first holder parallel portion 132 connected to the holder bent portion 131 and forming a predetermined space along the first direction D1 may be formed (Fig. 5). (c)).

In the 2-3rd step, the first holder inclined portion 133 connected to the first holder parallel portion 132 and forming a predetermined space along the first direction D1 may be formed ( See Fig. 5(d)).

In the step 2-4, a second holder parallel portion 134 connected to the first holder inclined portion 135 and forming a predetermined space along the first direction D1 may be formed ( See Fig. 5(e)).

In the step 2-5, the engaging portion 137 connected to the second holder parallel portion 134 and bent toward the upper surface of the tip holder portion 10 may be formed (( f) see).

In steps 2-6, the second holder inclined portion 135 may be formed to be connected to the locking portion 134 and linearly increase the size of the space along the first direction D1. (See Fig. 5(g)).

When the through wire is cut, the locking part 137 may prevent the free end of the cut wire from being separated from the tip holder part 10.

The third step may be a step of preparing a guide tip 20 formed of a rotating body rotated with respect to the second rotation shaft L2.

The fourth step may be a step of processing the outer surface such that at least a portion of the guide tip 20 is formed larger than the size of the mounting space (see FIG. 6A).

Specifically, the fourth step may include steps 4-1 to 4-3.

The step 4-1 may be a step of processing the first guide parallel portion 211 forming an outer surface disposed at a first distance Y1 from the second rotation shaft L2 (see ( b) see).

The step 4-2 is connected to the first guide parallel part 211, and a distance gradually increases from the first distance Y1 toward a second distance Y2 smaller than the first distance Y1. It may be a step of processing the guide inclined portion 213 that forms the decreasing outer side (see (c) of FIG. 6).

Step 4-3 may be a step of processing the second guide parallel portion 212 forming an outer surface disposed at a second distance Y2 from the second rotation shaft L2 (see ( d) see).

The fifth step may be a step of processing a guide through hole 23 penetrating the guide tip 20 up and down.

The fifth step may be a step of processing to form a convex guide curved surface 231 toward the second rotation shaft L2 (see FIG. 6(e)).

The holder bent part 131 forms a convex holder curved surface toward the first rotation axis L1 (L1), and the holder curved surface is a first radius of curvature RL based on a first center of curvature RC. It can be formed in the size of.

The guide curved surface 231 may be formed to be bent toward the second rotation axis L2 to a size of the first curvature radius RL with respect to the first center of curvature RC.

The sixth step may be a step of mounting the guide tip 20 to the mounting space.

The sixth step of the method of manufacturing the wire guide 1 according to an embodiment of the present invention may include a 6-1 step and a 6-2 step.

The 6-1 step may be a step of forcibly fitting the guide tip 20 into the mounting space of the tip holder part 10.

The 6-2 step may be a step of allowing the holder curved surface and the guide curved surface 231 to be disposed on the same curved surface.

Meanwhile, the sixth step of the method of manufacturing the wire guide 1 according to another embodiment may include steps 6a to 6c.

Step 6-a may be a step of applying an adhesive to the first holder parallel portion 132, the first holder inclined portion 135, and the second holder parallel portion 134.

The 6-b step may be a step of inserting the guide tip 20 into the mounting space of the tip holder part 10.

Step 6-c may be a step of curing the adhesive between the tip holder part 10 and the guide tip 20.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art, and therefore, such changes or modifications are found to belong to the appended claims.

1: wire guide 10: tip holder
L1: 1st rotation shaft 11: holder body part
13: Holder through hole D1: 1st direction
RC: first center of curvature RL: first radius of curvature
20: guide tip L2: second rotation shaft
21: guide body Y1: first distance
Y2: second street 23: guide through hole
300: wire electric discharge processing system 310: receiving portion
320: unwinding device 1a: first wire guide
340: winding device 1b: second wire guide

Claims (11)

In the method of manufacturing a wire guide for guiding a wire that maintains a certain tension by the unwinding device and the winding device,
A first step of preparing a tip holder portion formed of a rotating body rotated with respect to a first rotation axis;
The tip holder is vertically penetrated, but the size of the space decreases from the upper surface of the tip holder toward the lower surface, thereby forming a mounting space, and processing the holder through hole whose size increases from the mounting space toward the lower surface. The second step;
A third step of preparing a guide tip formed of a rotating body rotated based on a second rotation axis;
A fourth step of processing an outer surface such that at least a portion of the guide tip is formed larger than the size of the mounting space;
A fifth step of processing a guide through hole passing through the guide tip up and down; And
Including; a sixth step of mounting the guide tip to the mounting space,
The second step,
Step 2-1 of forming a holder bent portion in which the size of the space decreases non-linearly along a first direction from the top surface of the tip holder portion toward the bottom surface,
Step 2-2 of forming a first holder parallel part connected to the holder bent part and forming a constant space along the first direction,
Step 2-3 of forming a first holder inclined portion connected to the first holder parallel portion and linearly decreasing the size of the space along the first direction,
Step 2-4 of forming a second holder parallel part connected to the first holder inclined part and forming a constant space along the first direction,
Step 2-5 of forming a locking part connected to the second holder parallel part and curved toward the upper surface of the tip holder part, and
And a second holder inclined portion connected to the locking portion and linearly increasing the size of the space along the first direction, comprising steps 2-6,
The locking part,
A wire guide manufacturing method, characterized in that when the penetrating wire is disconnected, the free end of the disconnected wire is caught and is prevented from being separated from the tip holder.
delete The method of claim 1,
The fourth step,
Step 4-1 of processing a first guide parallel portion forming an outer surface disposed at a first distance from the second rotation axis,
Step 4-2 of processing a guide inclined portion connected to the first guide parallel portion and forming an outer surface whose distance gradually decreases toward a second distance smaller than the first distance from the first distance; and
And a 4-3 step of processing a second guide parallel part forming an outer surface disposed at the second distance from the second rotation shaft.
The method of claim 3,
The fifth step,
It is a step of processing to form a convex guide curved surface toward the second rotation axis,
The holder bent portion,
To form a convex holder curved surface toward the first rotation axis, the holder curved surface is formed with a size of a first radius of curvature based on a first center of curvature,
The guide curved surface,
A method of manufacturing a wire guide, characterized in that it is formed to be bent toward the second rotation axis to a size of the first radius of curvature based on the first center of curvature.
The method of claim 4,
The sixth step,
Step 6-1 of forcibly fitting the guide tip into the mounting space of the tip holder part, and
And a 6-2 step of causing the holder curved surface and the guide curved surface to be disposed on the same curved surface.
The method of claim 4,
The sixth step,
Step 6-a of applying an adhesive to the first holder parallel portion, the first holder inclined portion and the second holder parallel portion,
Step 6-b of inserting the guide tip into the mounting space of the tip holder, and
And a 6-c step of curing the adhesive between the tip holder and the guide tip.
In a wire guide for guiding a wire whose tension is maintained by a take-up device and a take-up device,
A tip holder part providing a space through which the wire is introduced and a space through which the wire is introduced; And
Includes; a guide tip mounted on the tip holder and formed of an insulator,
The tip holder part,
A holder body portion formed of a rotating body rotated with respect to the first rotation axis and a holder through hole penetrating the upper and lower surfaces of the holder body portion,
The holder through hole,
The size of the space decreases from the upper surface toward the lower surface to form a mounting space, and the size of the space increases from the mounting space toward the lower surface,
The guide tip,
At least a portion is formed larger than the size of the mounting space, and stays without passing through the mounting space,
The holder through hole,
A holder bent portion whose size of the space decreases non-linearly along a first direction from an upper surface to a lower surface of the holder body portion, a first holder parallel portion connected to the holder bent portion and forming a constant space along the first direction, The first holder inclined portion is connected to the first holder parallel portion and linearly decreases in the size of the space in the first direction, and is connected to the first holder inclined portion, and a certain space is formed in the first direction. And a second holder inclined portion connected to the formed second holder parallel portion and the second holder parallel portion and linearly increasing the size of the space along the first direction,
The guide tip,
A guide body portion formed of a rotating body rotated with respect to a second rotation axis and a guide through hole penetrating the upper and lower surfaces of the guide body portion,
The guide body part,
A first guide parallel portion forming an outer surface disposed at a first distance from the second rotation shaft, a second guide parallel portion forming an outer surface disposed at a second distance smaller than the first distance from the second rotation axis, and And a guide inclined portion that connects the first guide parallel portion and the second guide parallel portion and forms an outer surface whose distance gradually decreases from the first distance toward the second distance,
The guide through hole,
Wire guide, characterized in that to form a convex guide curved surface toward the second rotation axis.
delete The method of claim 7,
The holder bent portion,
To form a convex holder curved surface toward the first rotation axis, the holder curved surface is formed with a size of a first radius of curvature based on a first center of curvature,
The guide curved surface,
It is formed to be bent toward the second rotation axis to the size of the first radius of curvature with respect to the first center of curvature, and is disposed on the same curved surface when connected to the holder curved surface,
The holder through hole,
It is formed between the second holder parallel portion and the second holder inclined portion, further comprising a locking portion bent toward the upper surface of the holder body,
The locking part,
When the penetrating wire is disconnected, the wire guide, characterized in that it prevents the free end of the disconnected wire from being separated from the tip holder.
The method of claim 9,
The guide tip,
It is mounted in the mounting space through the holder through hole along the first direction from the upper surface of the holder body,
When the guide tip is mounted in the mounting space, the first guide parallel part is in contact with the first holder parallel part, the guide inclined part is in contact with the first holder inclined part, and the second guide parallel part is in contact with the first holder parallel part. 2 Wire guide, characterized in that in contact with the holder parallel portion.
In the wire electric discharge machining system for processing an object into a preset shape,
An accommodation unit providing a space in which an object is accommodated;
A unwinding device disposed on the upper side of the receiving portion and unwinding the connected wire;
The first wire guide according to any one of claims 7, 9 and 10;
A take-up device disposed on the lower side of the accommodating part and connected to the wire unwound from the take-up device to wind up the wire; And
Including; a second wire guide according to any one of claims 7, 9 and 10,
The first wire guide,
It guides the wire unwound from the unwinding device by being arranged while standing up between the accommodating part and the unwinding device,
The second wire guide,
A wire discharge processing system, characterized in that inverted between the receiving portion and the take-up device, and arranged to guide the guided wire through the first wire guide.

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