A fine-tuning mechanism for electrode rods in electrical discharge machining

Abstract

This invention relates to an electrode rod fine-tuning mechanism for electrical discharge machining (EDM), comprising: a spindle connecting rod, a fine-tuning mechanism body, and an electrode connecting ball rod; the fine-tuning mechanism body has a first cavity and a second cavity that are interconnected, the first cavity having a first opening facing upwards, and the second cavity having a second opening facing downwards; the electrode connecting ball rod includes a ball and a rod connected to each other, the ball being movably disposed within the first cavity, and the rod being movably disposed within the second cavity; the first end of the spindle connecting rod is disposed within the first opening and abuts against the ball to limit the ball's position. This invention achieves electrode angle position adjustment by adjusting and fixing the electrode connecting ball rod within the fine-tuning mechanism body according to the machining characteristics, ensuring the efficiency and accuracy of EDM, and solving the technical problems of inability to adjust the electrode angle position, low machining efficiency, and non-reusability of the electrode rod when EDM machining communication holes in hydraulic parts.

Description

Technical Field

[0001] This invention relates to the field of electrical discharge machining (EDM) technology, and in particular to an electrode rod fine-tuning mechanism for EDM. Background Technology

[0002] With the development of aviation technology, aviation hydraulic components are integrating more and more functions, and the density of oil passages is also increasing. In the design of a certain aircraft hydraulic component, to achieve internal communication between two non-intersecting oil passages, the previous design approach was to drill a hole through the two internal holes on the outer surface of the model, then plug the hole to allow oil flow between them. However, as the need for internal communication increases, constantly drilling external holes not only increases the component's instability but also easily damages other holes that do not require communication. The improved design approach is to design a communication hole only between two non-intersecting holes inside the valve body, using electrical discharge machining (EDM) to drill a hole on the inner sidewall of the hole, thus achieving internal communication without external openings. The improved design significantly enhances the component's stability and design flexibility.

[0003] Currently, the EDM (Electrical Discharge Machining) process involves attaching an electrode to an electrode rod, with the EDM spindle directly clamping the rod. The electrode position is determined by manually bending and oscillating the rod. This method suffers from low precision and efficiency, and the bent electrode rod cannot be reused, significantly increasing processing costs. Therefore, there is an urgent need to innovate and improve the manufacturing process, developing a device capable of fine-tuning the electrode rod to enhance processing accuracy and efficiency. Summary of the Invention

[0004] (1) Technical problems to be solved

[0005] This invention provides an electrode rod fine-tuning mechanism for electrical discharge machining, which solves the technical problems of the inability to adjust the electrode position angle, low efficiency, and the inability to reuse the electrode rod.

[0006] (2) Technical solution

[0007] An embodiment of the present invention provides an electrode rod fine-tuning mechanism for electrical discharge machining, comprising: a spindle connecting rod, a fine-tuning mechanism body, and an electrode connecting ball rod; the fine-tuning mechanism body is provided with a first cavity and a second cavity that are interconnected, the first cavity having a first opening facing upwards, and the second cavity having a second opening facing downwards; the electrode connecting ball rod comprises a ball and a rod body connected together, the ball being movably disposed within the first cavity, and the rod body being movably disposed within the second cavity; the first end of the spindle connecting rod is disposed within the first opening and abuts against the ball to limit the ball's position.

[0008] Furthermore, the second end of the spindle connecting rod is connected to the spindle of the electrical discharge machining equipment via a connecting post, and its first end is provided with a first hemispherical concave surface that matches the sphere. The spindle connecting rod is connected to the first opening via a thread.

[0009] Furthermore, the bottom of the first cavity is provided with a second hemispherical concave surface that matches the sphere.

[0010] Furthermore, the outer wall of the first cavity corresponding to the concave surface of the second hemispherical surface is a conical surface, and the outer wall of the second cavity is a cylindrical surface.

[0011] Furthermore, a plurality of first threaded holes are inclinedly formed on the conical surface corresponding to the concave surface of the second hemisphere, and first adjusting screws are screwed into the plurality of first threaded holes respectively to adjust the lifting height of the sphere in each direction.

[0012] Furthermore, the first threaded hole is provided in four sets, and is arranged in a circular array along the axis of the main body of the fine-tuning mechanism.

[0013] Furthermore, a plurality of second threaded holes are horizontally opened on the inner wall of the second cavity on the cylindrical surface, and second adjusting screws are screwed into the plurality of second threaded holes respectively to fix the tilt direction of the rod.

[0014] Furthermore, the second threaded hole is provided in four sets, and is arranged in a circular array along the axis of the main body of the fine-tuning mechanism.

[0015] Furthermore, the thickness of the outer wall of the second cavity at the second threaded hole is greater than the thickness of the outer wall of the second cavity at other locations.

[0016] Furthermore, one end of the rod is threadedly connected to the electrode rod, and one end of the electrode rod is provided with an electrode plate.

[0017] (3) Beneficial effects

[0018] In summary, this invention achieves electrode angle position adjustment by connecting the ball rod to the electrode and adjusting its angle position within the fine-tuning mechanism body according to the processing characteristics, and then fixing it. This ensures the efficiency and accuracy of EDM, and solves the technical problems of electrode angle position not being adjustable, low processing efficiency, and non-reusable electrode rods when EDM machining communication holes in hydraulic parts. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an electrode rod fine-tuning mechanism used in electrical discharge machining;

[0021] Figure 2 yes Figure 1 A schematic diagram of the main structure of the fine-tuning mechanism;

[0022] Figure 3 yes Figure 1 A schematic diagram of the electrode connection to the ball rod;

[0023] Figure 4 yes Figure 1 Schematic diagram of the main spindle connecting rod;

[0024] In the figure: 1. Main shaft connecting rod; 2. Electrode connecting ball rod; 3. Fine adjustment mechanism body; 4. Electrode rod; 5. Electrode plate; 32. First cavity; 35. Second cavity; 33. First threaded hole; 34. Second threaded hole; 21. Sphere; 22. Rod body; 11. Connecting column; 13. First hemispherical concave surface. Detailed Implementation

[0025] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Please refer to Figure 1 The present invention provides an electrode rod fine-tuning mechanism for electrical discharge machining, comprising: a spindle connecting rod 1, a fine-tuning mechanism body 3, and an electrode connecting ball rod 2; please refer to Figure 2 The fine-tuning mechanism body 3 is provided with a first cavity 32 and a second cavity 35 that are interconnected. The first cavity 32 has a first opening facing upwards, and the second cavity 35 has a second opening facing downwards. Please refer to... Figure 3The electrode connecting rod 2 includes a ball 21 and a rod 22 connected together. The ball 21 is movably disposed within the first cavity 32, and the rod 22 is movably disposed within the second cavity 35. The first end of the spindle connecting rod 1 is disposed within the first opening and abuts against the ball 21 to restrict the ball 21. During EDM machining of the communication hole of the hydraulic part, the angle position of the electrode connecting rod 2 is adjusted within the fine-tuning mechanism body 3 according to the machining characteristics. The ball 21 can rotate within the first cavity 32, and the rod 22 can tilt at a certain angle within the second container following the rotation of the ball 21. Then, the spindle connecting rod 1 is connected to the first opening and abuts against the ball 21. Friction prevents the ball 21 from rotating again, thereby fixing the electrode connecting rod 2. The electrode rod fine-tuning mechanism realizes the adjustment of the electrode angle position, ensuring the efficiency and accuracy of EDM machining, and solving the technical problems of low machining efficiency and non-reusable electrode rod 4.

[0028] Please refer to Figure 4 In some embodiments, the second end of the spindle connecting rod 1 is connected to the spindle of the electrical discharge machining equipment via a connecting post 11, and its first end is provided with a first hemispherical concave surface 13 that matches the sphere 21. The spindle connecting rod 1 is connected to the first opening by a thread. The first hemispherical concave surface 13 can better fit the sphere 21 and generate greater friction. Then, the spindle connecting rod 1 is screwed into the first opening, thereby generating greater pressure.

[0029] In some embodiments, the bottom of the first cavity 32 is provided with a second hemispherical concave surface that matches the sphere 21, which can better support the sphere 21 and facilitate the rotation of the sphere 21.

[0030] In some embodiments, the outer wall of the first cavity 32 corresponding to the second hemispherical concave surface is a conical surface, and the outer wall of the second cavity 35 is a cylindrical surface, which can better adapt to the shape requirements of the first cavity 32 and the second cavity 35, and at the same time facilitate processing.

[0031] In some embodiments, a plurality of first threaded holes 33 are inclinedly provided on the conical surface corresponding to the concave surface of the second hemisphere. The plurality of first threaded holes 33 are screwed into the first adjusting screws respectively to adjust the lifting height of the ball 21 in each direction. By adjusting the screwing amount of each first adjusting screw, a height difference is achieved, thereby fine-tuning and fixing the rotation direction of the ball 21.

[0032] In some embodiments, the first threaded hole 33 is provided in four sets and arranged in a circular array along the axis of the fine-tuning mechanism body 3, so that the ball 21 is subjected to forces in all directions more evenly.

[0033] In some embodiments, a plurality of second threaded holes 34 are horizontally formed on the inner wall of the second cavity 35 on the cylindrical surface. Second adjusting screws are screwed into the plurality of second threaded holes 34 respectively to fix the tilt direction of the rod 22. By screwing in each of the second adjusting screws and abutting against the rod 22, the position of the rod 22 is fixed to prevent the rod 22 from shaking.

[0034] In some embodiments, four sets of the second threaded holes 34 are arranged in a circular array along the axis of the fine-tuning mechanism body 3, so that the rod 22 is subjected to forces in all directions more evenly.

[0035] In some embodiments, the thickness of the outer wall of the second cavity 35 at the second threaded hole 34 is greater than the thickness of the outer wall of the second cavity 35 at other locations, which can better ensure that the second adjusting screw has sufficient screw-in amount and avoid stripping.

[0036] In some embodiments, one end of the rod 22 is threadedly connected to the electrode rod 4, and one end of the electrode rod 4 is provided with an electrode plate 5. The electrical discharge machining equipment conducts current through the spindle connecting rod 1, the electrode connecting ball rod 2 and the electrode rod 4 respectively, and finally acts on the electrode plate 5 to perform electrical discharge machining.

[0037] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.

[0038] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art without departing from the scope of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An electrode rod fine-tuning mechanism for electrical discharge machining, characterized in that, include: Main spindle connecting rod, fine-tuning mechanism body, and electrode connecting ball rod; The main body of the fine-tuning mechanism is provided with a first cavity and a second cavity that are interconnected. The first cavity has a first opening facing upwards, and the second cavity has a second opening facing downwards. The electrode connecting rod includes a ball and a rod connected to each other, the ball being movably disposed in the first cavity, and the rod being movably disposed in the second cavity; The first end of the main shaft connecting rod is disposed in the first opening and abuts against the ball to limit the ball; The bottom of the first cavity is provided with a second hemispherical concave surface that matches the sphere, and the outer wall of the first cavity corresponding to the second hemispherical concave surface is a conical surface; The conical surface is provided with a plurality of first threaded holes at an incline corresponding to the concave surface of the second hemisphere. First adjusting screws are screwed into the plurality of first threaded holes respectively to adjust the lifting height of the sphere in each direction. By adjusting the screwing amount of each first adjusting screw, a height difference is achieved, thereby fine-tuning and fixing the rotation direction of the sphere.

2. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 1, characterized in that, The second end of the spindle connecting rod is connected to the spindle of the EDM equipment via a connecting post, and its first end is provided with a first hemispherical concave surface that matches the sphere. The spindle connecting rod is connected to the first opening via a thread.

3. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 1, characterized in that, The outer wall of the second cavity is cylindrical.

4. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 1, characterized in that, The first threaded hole is provided in four sets, and is arranged in a ring array along the axis of the main body of the fine-tuning mechanism.

5. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 3, characterized in that, Multiple second threaded holes are horizontally formed on the cylindrical surface corresponding to the inner wall of the second cavity. Second adjusting screws are screwed into the multiple second threaded holes to fix the tilt direction of the rod.

6. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 5, characterized in that, The second threaded hole is provided in four sets, and is arranged in a ring array along the axis of the main body of the fine-tuning mechanism.

7. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 5, characterized in that, The thickness of the outer wall of the second cavity at the second threaded hole is greater than the thickness of the outer wall of the second cavity at other locations.

8. The electrode rod fine-tuning mechanism for electrical discharge machining according to claim 1, characterized in that, One end of the rod is threaded to the electrode rod, and one end of the electrode rod is provided with an electrode plate.

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