Electrical discharge machining mechanism with error adjustment function and wire cutting machine tool

Abstract

The application discloses a kind of electric spark cutting mechanism with error adjustment function and linear cutting machine tool, including column, beam, lower guide rod, upper guide rod, electrode wire, telescopic guide rod, two rotating shafts, two transmission lever bases, two cams, two electrode wire seats, two push rods and a transmission lever.The above electric spark cutting mechanism with error adjustment function can ensure that the position of electrode wire coincides with the theoretical cutting line when vertically processing workpiece, and can make the middle part of electrode wire translate a small distance while keeping the deflection angle unchanged when taper processing workpiece through two toggle assemblies, compensate the small parallel gap between the theoretical cutting line, make electrode wire accurately locate the position of theoretical cutting line, avoid the generation of cutting error, and improve the processing precision.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, specifically to an electrical discharge machining (EDM) mechanism and a wire EDM machine tool with error adjustment function. Background Technology

[0002] A wire electrical discharge machining (EDM) machine is a special type of machine tool that utilizes the principle of electrical discharge. Through the discharge between the electrode wire and the workpiece, when the distance between them is small, a spark discharge is generated. This spark discharge produces high temperature and high pressure, melting and vaporizing the material on the workpiece surface, thus forming a cutting line that cuts the workpiece into the desired shape and size.

[0003] Variable taper wire EDM machines are a special type of wire EDM machine. They can automatically adjust the position and angle of the cutting head during processing, enabling the machining of parts with ruled surface features. They offer advantages such as a wide machining range, high machining accuracy, and high machining efficiency. Variable taper wire EDM machine mechanisms are typically used to machine complex tapered parts, such as bevel gears, tapered tubes, and tapered shafts, and are widely used in industries such as mold making, aerospace, automotive, and electronics.

[0004] Please see now. Figure 6 and Figure 7 Due to structural design issues, the EDM mechanism of the variable taper wire EDM machine can ensure that the electrode wire 5 coincides with the theoretical cutting line B when machining the workpiece A at a vertical angle. However, when machining the workpiece A at a taper angle, there will be a small parallel gap between the electrode wire 5 and the theoretical cutting line B, resulting in cutting errors and affecting the machining accuracy.

[0005] Solving these problems is now a top priority. Summary of the Invention

[0006] To address the technical problem of low machining accuracy caused by the electrode wire not being precisely positioned at the theoretical cutting line when performing taper machining on workpieces in existing variable taper wire EDM machines, this invention provides an EDM mechanism and wire EDM machine tool with error adjustment function.

[0007] The technical solution is as follows:

[0008] The first aspect of this application relates to an electrical discharge machining (EDM) mechanism with error adjustment function, comprising a column extending along the Z-direction and a crossbeam extending along the X-direction and mounted on the column. A lower guide rod extending along the X-direction is mounted on the column, and an upper guide rod parallel to the lower guide rod is located directly above it. An upper guide rod drive assembly capable of moving the upper guide rod along the X-direction is mounted on the crossbeam. Electrode wire seats are mounted at the ends of both the upper and lower guide rods away from the column, and an elastic electrode wire connects the two electrode wire seats. A telescopic guide rod is hinged between the end of the upper guide rod near the column and the middle of the lower guide rod, and the upper and lower ends of the telescopic guide rod... The upper and lower guide rods are hinged to each other via rotating shafts. Each rotating shaft is equipped with a rotatable transmission rod seat and a cam that rotates synchronously with the transmission rod seat. The two ends of the transmission rod pass through the two transmission rod seats and slide with at least one of them. Each of the upper and lower guide rods is equipped with a push rod that can slide along the X-direction and an elastic component that makes the corresponding push rod tend to approach the column. The ends of the two push rods near the column are supported on the cam profile of the corresponding cam. The ends of the two push rods away from the column are equipped with a toggle component. The two toggle components are located between the two electrode wire seats and are supported on the side of the electrode wire away from the column.

[0009] The above-mentioned EDM mechanism with error adjustment function can ensure that the electrode wire and the theoretical cutting line are aligned when machining the workpiece vertically. Furthermore, when machining the workpiece tapered, the upper guide rod drive assembly controls the translation of the upper guide rod in the X-axis, tilting the electrode wire to the theoretical taper. Simultaneously, the translation of the upper guide rod causes the telescopic guide rod to deflect and extend, transmitting the deflection to the transmission rod. This transmission rod then causes the two cams to rotate synchronously, resulting in synchronous and equidistant displacement of the two push rods. Finally, two actuating components force the middle of the electrode wire to translate a small distance while maintaining a constant deflection angle, compensating for the slight parallel gap with the theoretical cutting line. This ensures the electrode wire is precisely positioned on the theoretical cutting line, avoiding cutting errors and improving machining accuracy.

[0010] In some embodiments, each push rod includes an integrally formed folded rod portion and a straight rod portion. Each folded rod portion includes an integrally formed sliding engagement section, a Z-direction extension section, and an X-direction extension section. Both the sliding engagement section and the X-direction extension section extend along the X-direction. Each upper guide rod and lower guide rod is equipped with a sliding support sleeve adapted to the corresponding sliding engagement section. Each sliding engagement section is slidably mounted on the corresponding sliding support sleeve. Each X-direction extension section is located on the side of the two sliding engagement sections that are close to each other, and each X-direction extension section has the actuating component at the end away from the cam. Each Z-direction extension section extends along the Z-direction, and both ends of the Z-direction extension section are connected to the end of the corresponding sliding engagement section away from the cam and the end of the corresponding X-direction extension section close to the cam, respectively. Each folded rod portion extends from the end of the corresponding sliding engagement section away from the Z-direction extension section toward the cam. Each folded rod portion has a mating roller rotatably supported on the corresponding cam profile at the end toward the cam.

[0011] In some embodiments, the actuating assembly includes a pressure roller shaft fixedly mounted on the X-direction extension and a pressure roller rotatably mounted on the pressure roller shaft. The outer circumferential surface of the pressure roller is recessed to form a pressure groove that matches the electrode wire. Both pressure rollers are supported on the electrode wire through the pressure groove.

[0012] In some embodiments, the elastic component includes a reset spring, a spring mounting base, a spring mounting cap, and a spring action cap. The reset spring is mounted on the corresponding upper or lower guide rod and is located on the side of the corresponding Z-direction extension near the electrode wire. The spring mounting cap and the spring action cap are respectively mounted on both ends of the corresponding reset spring, and the spring mounting cap is mounted on the side of the corresponding spring mounting base near the Z-direction extension. The spring action cap is supported on the corresponding Z-direction extension.

[0013] In some embodiments, a sliding support plate extending toward the lower guide rod is fixedly connected to the middle of the upper guide rod. The bottom of the sliding support plate has a support plate groove that matches the lower guide rod, and the upper edge of the lower guide rod is slidably embedded in the support plate groove.

[0014] In some embodiments, the lower end of the transmission rod is fixedly mounted on a lower transmission rod seat, and the upper end of the transmission rod is telescopically mounted on an upper transmission rod seat.

[0015] In some embodiments, the upper guide rod drive assembly includes at least an X-direction electric linear module extending along the X direction, the slide of the X-direction electric linear module facing downward and connected to the upper guide rod via a guide rod connector, thereby enabling the upper guide rod to translate along the X direction.

[0016] In some embodiments, the upper guide rod drive assembly further includes a Y-direction electric linear module extending along the Y direction, the base of which is mounted on the crossbeam, the slide of which faces downward, the base of which is mounted on the slide of which is the X-direction electric linear module, and at least two translational guide rods passing through the lower guide rod are mounted on the column, thereby enabling the lower guide rod to translate along each translational guide rod in the Y direction.

[0017] In some embodiments, the column is provided with a Z-direction manual linear module extending along the Z-direction, and the crossbeam can be raised and lowered along the column under the action of the Z-direction manual linear module.

[0018] The first aspect of this application relates to a wire EDM machine tool, comprising a base and an EDM mechanism with error adjustment function as described in any one of claims 1-9. The column is mounted on the base, and a tooling translation module is mounted on the base. The tooling translation module includes an X-axis manual linear module and a Y-axis manual linear module. The X-axis manual linear module is mounted on the base and extends along the X-axis. The Y-axis manual linear module is mounted on a slide of the X-axis manual linear module and extends along the Y-axis. A workpiece positioning fixture is mounted on the slide of the Y-axis manual linear module, and the workpiece positioning fixture is located below the lower guide rod and the electrode wire.

[0019] By using the above-mentioned wire EDM machine tool with error adjustment function, the position of the workpiece to be processed can be flexibly adjusted through the tooling translation module, which improves the versatility of the wire EDM machine tool. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the wire EDM machine tool.

[0021] Figure 2 A schematic diagram of the main structure of an electrical discharge cutting mechanism when it performs vertical machining on a workpiece.

[0022] Figure 3 A schematic diagram of the main structure of an electrical discharge cutting mechanism when performing taper machining on a workpiece.

[0023] Figure 4 A three-dimensional structural diagram of the main structure of an electrical discharge cutting mechanism when performing taper machining on a workpiece.

[0024] Figure 5 A schematic diagram showing how an electrical discharge machining (EDM) mechanism uses cam deflection to translate the electrode wire when machining a workpiece with a taper.

[0025] Figure 6 This is a schematic diagram of the electrode wire state in an existing electrical discharge machining (EDM) mechanism when performing vertical and tapered machining on a workpiece.

[0026] Figure 7 This is a schematic diagram showing the positional relationship between the electrode wire and the theoretical cutting line when an electrical discharge machining (EDM) mechanism performs taper machining on a workpiece in the prior art. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] Example 1:

[0029] like Figures 1-5 As shown, an electrical discharge machining (EDM) mechanism with error adjustment function mainly includes a column 1, a crossbeam 2, a lower guide rod 3, an upper guide rod 4, an electrode wire 5, a telescopic guide rod 6, two rotating shafts 7, two transmission rod seats 8, two cams 9, two electrode wire seats 11, two push rods 12, and a transmission rod 10.

[0030] Column 1 extends along the Z-direction, meaning it extends vertically. Crossbeam 2 extends along the X-direction and is mounted on column 1, meaning it extends horizontally. Lower guide rod 3 extends along the X-direction and is mounted on column 1, meaning it extends horizontally and is located parallel to and directly below crossbeam 2. Upper guide rod 4 is located parallel to and directly below lower guide rod 3 and is also located parallel to and directly below crossbeam 2, meaning it extends along the X-direction. A drive assembly is mounted on crossbeam 2 that can move upper guide rod 4 along the X-direction, meaning the drive assembly can move upper guide rod 4 above lower guide rod 3, always parallel to it. Two electrode wire seats 11 are respectively installed at the ends of the upper guide rod 4 and the lower guide rod 3 away from the column 1. Furthermore, an elastic electrode wire 5 is connected between the two electrode wire seats 11. When the electrode wire 5 is energized, it can generate an electric spark discharge, which acts on the workpiece A. The high temperature and high pressure generated by the electric spark discharge melt and vaporize the material on the surface of the workpiece A, thereby forming a cutting line and cutting the workpiece A into the required shape and size.

[0031] The two ends of the telescopic guide rod 6 are respectively hinged to the upper guide rod 4 near the column 1 and the middle of the lower guide rod 3 through the pivot 7. The telescopic guide rod 6 can extend and retract. Specifically, the telescopic guide rod 6 includes a rod-shaped slider 6a and a rod-shaped groove 6b. The rod-shaped groove 6b is provided with a matching groove that is adapted to the rod-shaped slider 6a. One end of the rod-shaped groove 6b can be slidably inserted into the matching groove, which is simple and reliable and ensures the stable and reliable extension and retraction of the telescopic guide rod 6.

[0032] Both rotating shafts 7 are equipped with rotatable transmission rod seats 8 and cams 9 that rotate synchronously with the transmission rod seats 8. The two ends of the transmission rod 10 pass through the two transmission rod seats 8 respectively, and the transmission rod 10 is in sliding engagement with at least one of the transmission rod seats 8. Therefore, when the upper guide rod 4 translates, it can drive the telescopic guide rod 6 to rotate. Simultaneously, the telescopic guide rod 6 engages through extension and retraction, keeping the distance between the upper guide rod 4 and the lower guide rod 3 constant. Most importantly, because the telescopic guide rod 6 rotates, the transmission rod 10 moves accordingly; that is, the telescopic guide rod 6 drives the transmission rod 10 to rotate by the same angle. Therefore, the transmission rod 10 also drives the two cams 9 to rotate by the same angle, and the angle of rotation of the two cams 9 is the same as the angle of rotation of the transmission rod 10.

[0033] Meanwhile, two push rods 12 are slidably mounted on the upper guide rod 4 and the lower guide rod 3 along the X-direction, respectively. The ends of the two push rods 12 near the column 1 are supported on the cam profile 9a of the corresponding cam 9. At the same time, two elastic components 13 cause the corresponding push rods 12 to tend to move closer to the column 1, that is, the two elastic components 13 cause the corresponding push rods 12 to move closer to the corresponding cam 9, that is, the two elastic components 13 ensure that the ends of the two push rods 12 near the column 1 are always supported on the cam profile 9a of the corresponding cam 9. Furthermore, two actuating components 14 are respectively mounted on the ends of the corresponding push rods 12 away from the column 1, and both actuating components 14 are located between the two electrode wire seats 11 and are supported on the side of the electrode wire 5 away from the column 1.

[0034] Therefore, please see Figure 5 When tapering is required for workpiece A, the upper guide rod 4 is first moved in the X direction by the upper guide rod drive assembly, causing the electrode wire 5 to tilt to the theoretical taper. At the same time, the translation of the upper guide rod 5 causes the telescopic guide rod 6 to deflect and extend, and transmits the deflection to the transmission rod 10. The transmission rod 10 then causes the two cams 9 to rotate synchronously. Since the two cams 9 cause the two push rods 12 to move synchronously and equidistantly, the two actuating assemblies 14 force the middle part of the electrode wire 5 to translate a small distance while maintaining the deflection angle, thus compensating for the small parallel gap between the electrode wire 5 and the theoretical cutting line B. This ensures that the electrode wire 5 is accurately positioned at the theoretical cutting line B, avoiding cutting errors and improving machining accuracy.

[0035] Please see Figures 2-5Each push rod 12 includes an integrally formed bent rod portion 12a and a straight rod portion 12b. Each bent rod portion 12a includes an integrally formed sliding engagement section 12a1, a Z-direction extension section 12a2, and an X-direction extension section 12a3. Both the sliding engagement section 12a1 and the X-direction extension section 12a3 extend along the X-direction. The upper guide rod 4 and the lower guide rod 3 are each equipped with a sliding support sleeve 15 that is adapted to the corresponding sliding engagement section 12a1. The sliding engagement section 12a1 is slidably inserted into the corresponding sliding support sleeve 15. The two X-direction extension sections 12a3 are located between the two sliding engagement sections 12a1. On the side closest to each other, and at the ends of the two X-direction extension segments 12a3 away from the cam 9, there is a toggle assembly 14. The Z-direction extension segments 12a2 both extend in the Z direction, and their two ends are respectively connected to the ends of the corresponding sliding mating segments 12a1 away from the cam 9 and the ends of the corresponding X-direction extension segments 12a3 close to the cam 9. The folding rod portions 12a both extend from the ends of the corresponding sliding mating segments 12a1 away from the Z-direction extension segments 12a2 toward the cam 9. The ends of the folding rod portions 12a toward the cam 9 each have mating rollers 16 rotatably supported on the corresponding cam profile 9a. Therefore, when the cam 9 rotates, by driving the rollers 16 to rotate and pushing the push rod 12, the sliding friction is improved into rolling friction, ensuring the stability, reliability, and smoothness of the fit between the two, and avoiding jamming problems.

[0036] Please see Figure 4 The actuating assembly 14 includes a pressure roller shaft 14a fixedly mounted on the X-direction extension 12a3 and a pressure roller 14b rotatably mounted on the pressure roller shaft 14a. A pressure groove 14b1, adapted to the electrode wire 5, is recessed on the outer circumferential surface of the pressure roller 14b. Both pressure rollers 14b are supported on the electrode wire 5 via the pressure groove 14b1. Therefore, by setting the pressure roller 14b, when the pressure roller 14b presses the electrode wire 5, the sliding friction is improved to rolling friction, ensuring the stability, reliability, and smoothness of the cooperation between the two, avoiding jamming problems, and reducing frictional wear on the electrode wire, thereby improving the service life of the electrode wire. Furthermore, due to the setting of the pressure groove 14b1, the electrode wire 5 is confined within the pressure groove 14b1, preventing problems such as slippage and deformation of the electrode wire 5.

[0037] Specifically, please see Figures 5-7 When the pressure roller 14b presses the electrode wire 5, the electrode wire 5, located at the midpoint of the tangents of the two pressure rollers 14b, is translated along the actual cutting line to the theoretical cutting line B. This is specifically achieved through a fitting formula:

[0038] Δ=R(1-cosθ) / sinθ

[0039] In the above formula, Δ represents the distance that the electrode wire 5 and the pressing wheel 14b move, R represents the radius of the pressing wheel 14b, and θ represents the taper angle.

[0040] The results obtained by substituting the above formula into the taper angle fitting are shown in Table 1 below. Since Δ changes with the taper angle, and in this embodiment, cam 9 drives push rod 12 to translate, and transmission rod 10 drives the two cams 9 to rotate at the same angle, so that push rod 12 drives pressure wheel 14b to press electrode wire 5 to translate by the same distance, the numerical relationship between the variables is shown in Table 1 below. This achieves a controllable adjustment method for the moving distance, that is: as long as the parameters of cam profile 9a are set, the translation distance of electrode wire 5 is constant. For example, the base circle radius of cam 9 is 20mm, so the taper angle and the values ​​of the variables are only fitted to 30 degrees. Subsequently, by changing the size of the cam, a larger taper error can be adjusted.

[0041] Table 1. Error Adjustment Fitting Results

[0042]

[0043]

[0044] The position adjustment of the upper guide rod 4 is selected according to factors such as the material, size and shape of the workpiece A, so that the machine tool can process workpieces A with different tapers.

[0045] Please see Figure 3 Each elastic component 13 includes a reset spring 13a, a spring mounting base 13b, a spring mounting cap 13c, and a spring actuation cap 13d. The reset spring 13a is mounted on the corresponding upper guide rod 4 or lower guide rod 3 and is located on the side of the corresponding Z-direction extension 12a2 near the electrode wire 5. The spring mounting cap 13c and the spring actuation cap 13d are respectively mounted on both ends of the corresponding reset spring 13a. The spring mounting cap 13c is mounted on the side of the corresponding spring mounting base 13b near the Z-direction extension 12a2, and the spring actuation cap 13d is supported on the corresponding Z-direction extension 12a2. It is simple, reliable, and easy to assemble.

[0046] Furthermore, the spring mounting base 13b has a first mounting hole that matches the spring mounting cap 13c. The outer end of the spring mounting cap 13c is inserted into the first mounting hole. The Z-direction extension 12a2 has a second mounting hole that matches the upper spring action cap 13d. The outer end of the spring action cap 13d is inserted into the second mounting hole, ensuring the reliability of the installation of the elastic component 13.

[0047] Please see Figures 1-5The upper guide rod 4 is fixedly connected to a sliding support plate 17 extending toward the lower guide rod 3. The bottom of the sliding support plate 17 has a support plate groove 17a that is adapted to the lower guide rod 3. The upper edge of the lower guide rod 3 is slidably embedded in the support plate groove 17a. By setting the sliding support plate 17, the upper guide rod 4 and the lower guide rod 3 are reliably supported, avoiding deformation problems.

[0048] In this embodiment, the lower end of the transmission rod 10 is fixedly mounted on a lower transmission rod seat 8, while the upper end of the transmission rod 10 is telescopically mounted on an upper transmission rod seat 8. This arrangement prevents the transmission rod 10 from slipping, ensuring the reliability of its installation.

[0049] Please see Figure 1 The upper guide rod drive assembly includes at least an X-direction electric linear module 18 extending along the X-direction. The slide of the X-direction electric linear module 18 faces downward and is connected to the upper guide rod 4 via a guide rod connector 19, thereby enabling the upper guide rod 4 to translate along the X-direction. In this embodiment, the X-direction electric linear module 18 is a conventional electric linear module based on a motor, a lead screw nut, and a slide. By controlling the rotation of the lead screw through the motor, the slide can be linearly translated, which is not only simple and reliable but also has high adjustment accuracy.

[0050] The upper guide rod drive assembly also includes a Y-axis electric linear module 20 extending along the Y direction. The base of the Y-axis electric linear module 20 is mounted on the crossbeam 2, with the slide of the Y-axis electric linear module 20 facing downwards. The base of the X-axis electric linear module 18 is mounted on the slide of the Y-axis electric linear module 20. At least two translational guide rods 21 are installed on the column 1, passing through the lower guide rod 3, thereby enabling the lower guide rod 3 to translate along each translational guide rod 21 in the Y direction. That is, the lower guide rod 3 has guide rod mating holes 3a that are adapted to each translational guide rod 21, and each translational guide rod 21 passes through the corresponding guide rod mating hole 3a, which is simple and reliable. Furthermore, in order to limit the lower guide rod 3, the outer end of each translational guide rod 21 is enlarged to form a limiting head 21a, thereby preventing the lower guide rod 3 from slipping.

[0051] In this implementation, similar to the X-axis electric linear module 18, the Y-axis electric linear module 20 is also a conventional electric linear module based on a motor, lead screw nut, and slide table. By controlling the rotation of the lead screw through the motor, the slide table can be moved linearly, which is not only simple and reliable, but also has high adjustment accuracy.

[0052] Please see Figure 1The column 1 is equipped with a Z-axis manual linear module 22 extending along the Z-direction. The crossbeam 2 can be raised and lowered along the column 1 under the action of the Z-axis manual linear module 22. In this embodiment, the Z-axis manual linear module 22 is a conventional manual linear module based on a rocker arm, lead screw nut, and slide table. It is not only simple and reliable, but also has high adjustment accuracy and low cost. It should be noted that the raising and lowering adjustment of the crossbeam 2 by the Z-axis manual linear module 22 is carried out during the assembly of the EDM mechanism to adapt to different models of EDM mechanisms. After the assembly is completed, the Z-axis manual linear module 22 is locked.

[0053] Example 2:

[0054] Please see Figure 1 A wire EDM machine tool includes a base 23 and an EDM mechanism with error adjustment function as described in Embodiment 1. A column 1 is mounted on the base 23, and a tooling translation module is mounted on the base 23. This tooling translation module includes an X-axis manual linear module 24 and a Y-axis manual linear module 25. The X-axis manual linear module 24 is mounted on the base 23 and extends along the X-axis. The Y-axis manual linear module 25 is mounted on a slide of the X-axis manual linear module 24 and extends along the Y-axis. A workpiece positioning fixture 26 is mounted on the slide of the Y-axis manual linear module 25, located below the lower guide rod 3 and the electrode wire 5. Similar to the Z-axis manual linear module 22, the X-axis manual linear module 24 and the Y-axis manual linear module 25 are also conventional manual linear modules based on rocker arms, lead screw nuts, and slides, which are not only simple and reliable but also have high adjustment accuracy and low cost.

[0055] By controlling the X-axis manual linear module 24 and the Y-axis manual linear module 25, the position of the workpiece positioning fixture 26 can be precisely adjusted.

[0056] In this embodiment, the upper guide rod 4, lower guide rod 3, telescopic guide rod 6, and electrode wire 5 are approximately a four-bar linkage. The cam 9 and push rod 12 (with roller 16) are in a cam-face fit. All of these belong to lower-pair mechanisms. The advantages of lower-pair mechanisms are that the kinematic pairs are in surface contact, resulting in less wear, higher load-bearing capacity, better force transmission performance, easier manufacturing, and convenient maintenance, and higher precision. The motion form of lower-pair mechanisms is relatively easy to transform, readily converting into prismatic or revolute pairs, thus simplifying the structure and motion form of the mechanism and making it easier to design and analyze. Furthermore, the motion is accurate, enabling the fulfillment of complex motion requirements. As long as it is suitable for the working requirements of the driven member, the expected motion law can be achieved.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. An electrical discharge machining (EDM) mechanism with error adjustment function, comprising a column extending along the Z-direction and a crossbeam extending along the X-direction and mounted on the column, characterized in that: A lower guide rod extending along the X-direction is installed on the column. An upper guide rod parallel to the lower guide rod is positioned directly above it. An upper guide rod drive assembly capable of moving the upper guide rod along the X-direction is installed on the crossbeam. Electrode wire seats are installed at the ends of both the upper and lower guide rods away from the column, and an elastic electrode wire connects the two electrode wire seats. A telescopic guide rod is hinged between the end of the upper guide rod closest to the column and the middle of the lower guide rod. The upper and lower ends of this telescopic guide rod are hinged to the upper and lower guide rods respectively via pivots. A rotating mechanism is installed on each of the two pivots. The transmission rod has a movable transmission rod seat and a cam that rotates synchronously with the transmission rod seat. The two ends of the transmission rod are respectively passed through two transmission rod seats and are slidably engaged with at least one of the transmission rod seats. The upper guide rod and the lower guide rod are each equipped with a push rod that can slide along the X direction and an elastic component that makes the corresponding push rod tend to approach the column. The ends of the two push rods that are close to the column are respectively supported on the cam profile of the corresponding cam. The ends of the two push rods that are away from the column are each equipped with a toggle component. The two toggle components are located between the two electrode wire seats and are supported on the side of the electrode wire away from the column.

2. The electrical discharge cutting mechanism with error adjustment function according to claim 1, characterized in that: Each push rod includes an integrally formed bent rod portion and a straight rod portion. Each bent rod portion includes an integrally formed sliding engagement section, a Z-direction extension section, and an X-direction extension section. The sliding engagement section and the X-direction extension section both extend along the X-direction. Each upper guide rod and lower guide rod is equipped with a sliding support sleeve adapted to the corresponding sliding engagement section. Each sliding engagement section is slidably mounted on the corresponding sliding support sleeve. Each X-direction extension section is located on the side of the two sliding engagement sections that are close to each other. Each X-direction extension section has the actuating component at the end away from the cam. Each Z-direction extension section extends along the Z-direction. The two ends of each Z-direction extension section are respectively connected to the end of the corresponding sliding engagement section away from the cam and the end of the corresponding X-direction extension section close to the cam. Each bent rod portion extends from the end of the corresponding sliding engagement section away from the Z-direction extension section toward the cam. Each bent rod portion has a mating roller rotatably supported on the corresponding cam profile at the end toward the cam.

3. The electrical discharge cutting mechanism with error adjustment function according to claim 2, characterized in that: The actuating assembly includes a pressure wheel shaft fixedly mounted on the X-direction extension section and a pressure wheel rotatably mounted on the pressure wheel shaft. A pressure groove adapted to the electrode wire is recessed on the outer circumferential surface of the pressure wheel, and both pressure wheels are supported on the electrode wire through the pressure groove.

4. The electrical discharge cutting mechanism with error adjustment function according to claim 2, characterized in that: Each elastic component includes a reset spring, a spring mounting base, a spring mounting cap, and a spring action cap. The reset spring is mounted on the corresponding upper or lower guide rod and is located on the side of the corresponding Z-direction extension near the electrode wire. The spring mounting cap and the spring action cap are respectively mounted on both ends of the corresponding reset spring, and the spring mounting cap is mounted on the side of the corresponding spring mounting base near the Z-direction extension. The spring action cap is supported on the corresponding Z-direction extension.

5. The electrical discharge cutting mechanism with error adjustment function according to claim 1, characterized in that: The upper guide rod is fixedly connected to a sliding support plate extending toward the lower guide rod at its middle part. The bottom of the sliding support plate has a support plate groove that matches the lower guide rod. The upper edge of the lower guide rod is slidably embedded in the support plate groove.

6. The electrical discharge cutting mechanism with error adjustment function according to claim 1, characterized in that: The lower end of the transmission rod is fixedly mounted on a transmission rod seat located below, and the upper end of the transmission rod is telescopically mounted on a transmission rod seat located above.

7. The electrical discharge cutting mechanism with error adjustment function according to claim 1, characterized in that: The upper guide rod drive assembly includes at least an X-direction electric linear module extending along the X direction. The slide of the X-direction electric linear module faces downward and is connected to the upper guide rod through a guide rod connector, thereby enabling the upper guide rod to translate along the X direction.

8. The electrical discharge cutting mechanism with error adjustment function according to claim 7, characterized in that: The upper guide rod drive assembly also includes a Y-direction electric linear module extending along the Y direction. The base of the Y-direction electric linear module is mounted on the crossbeam, and the slide of the Y-direction electric linear module faces downward. The base of the X-direction electric linear module is mounted on the slide of the Y-direction electric linear module. At least two translational guide rods passing through the lower guide rod are installed on the column, so that the lower guide rod can translate along each translational guide rod in the Y direction.

9. The electrical discharge cutting mechanism with error adjustment function according to claim 1, characterized in that: The column is equipped with a Z-direction manual linear module extending along the Z-direction, and the crossbeam can be raised and lowered along the column under the drive of the Z-direction manual linear module.

10. A wire cutting machine tool, characterized in that: The device includes a base and an EDM (Electrical Discharge Machining) mechanism with error adjustment function as described in any one of claims 1-9. The column is mounted on the base, and a tooling translation module is mounted on the base. The tooling translation module includes an X-axis manual linear module and a Y-axis manual linear module. The X-axis manual linear module is mounted on the base and extends along the X-axis. The Y-axis manual linear module is mounted on a slide of the X-axis manual linear module and extends along the Y-axis. A workpiece positioning fixture is mounted on the slide of the Y-axis manual linear module. The workpiece positioning fixture is located below the lower guide rod and the electrode wire.

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