Electrode clamp and electric discharge machine

Abstract

The utility model discloses an electrode clamp and an electric discharge machine. The electrode clamp comprises a supporting assembly, an angle adjusting assembly and a mounting component, and the supporting assembly is used for being connected with machining equipment; the angle adjusting assembly comprises an adjusting bead, and the angle adjusting assembly is rotationally connected with the supporting assembly through the adjusting bead; the mounting part is used for connecting an electrode and is provided with a mounting structure, and the angle adjusting assembly rotates and is matched with the position of the mounting structure. The supporting assembly and the angle adjusting assembly form a whole used for connecting the machining equipment and the installation component so that the electrode can be installed on the machining equipment, the bearing capacity of the machining equipment can be enhanced, the gravity of the electrode can be evenly distributed, and the conditions of displacement, looseness, insufficient bearing capacity and the like of the electrode are avoided. And the angle adjusting assembly is rotationally connected with the supporting assembly through the adjusting balls, the angle adjusting assembly can be adaptively matched with the mounting structures at different positions of various mounting components, and connection between the angle adjusting assembly and the mounting components is facilitated.

Description

Technical Field

[0001] This application relates to the field of fixtures, and particularly to an electrode fixture and an electric discharge machine. Background Art

[0002] Since electric discharge machining is applicable to the machining of high-hardness, difficult-to-machine materials and complex cavities, it plays a very important role in the manufacturing industry, especially in mold machining. In electric discharge machining, according to different process conditions, electrodes of different shapes are required, and the electrode fixture is an indispensable component in electric discharge machining. With the increasing demand for large molds in related fields, the volume of the electric discharge electrodes used to match large molds is getting larger, and the weight of the electric discharge electrodes is also getting heavier.

[0003] However, when using the current large electric discharge electrode fixtures, during the machining process, the electrodes are extremely prone to displacement, loosening, etc. under the reaction of stress, resulting in failure to meet the machining requirements and even damage to the machined mold cavity. At the same time, the current electrode fixtures cannot be adaptively adjusted for different electrodes or the mounting components connecting the electrodes, resulting in difficulties in connecting the fixture with the electrodes or the mounting components. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides an electrode fixture and an electric discharge machine with the above electrode fixture.

[0005] According to the electrode fixture of the first aspect embodiment of this application, the electrode fixture includes a support assembly, an angle adjustment assembly, and a mounting component. The support assembly is used to connect the processing equipment; the angle adjustment assembly includes adjustment beads, and the angle adjustment assembly is rotatably connected to the support assembly through the adjustment beads; the mounting component is used to connect the electrode, the mounting component is provided with a mounting structure, and the angle adjustment assembly rotates and matches the position of the mounting structure so that the angle adjustment assembly is connected to the mounting component.

[0006] The electrode fixture according to the embodiment of this application has at least the following beneficial effects: The mounting component is used to connect the electrode, and the support assembly and the angle adjustment assembly form an integral body for connecting the processing equipment and the mounting component, so that the electrode is mounted on the processing equipment, thereby enhancing the bearing capacity of the processing equipment, facilitating the uniform distribution of the electrode gravity, avoiding situations such as electrode displacement, loosening, and insufficient bearing capacity, and ensuring the processing quality; the angle adjustment assembly is rotatably connected to the support assembly through the adjustment beads, and the angle adjustment assembly can adaptively match the mounting structures at different positions of various mounting components, facilitating the connection between the angle adjustment assembly and the mounting component.

[0007] According to some embodiments of the present application, the support assembly includes a clamping assembly, the clamping assembly includes a first clamping body and a second clamping body connected to each other, the first clamping body and the second clamping body are spaced apart, and the adjustment beads rotate between the first clamping body and the second clamping body to adjust the angle of the angle adjustment assembly.

[0008] According to some embodiments of the present application, the angle adjustment assembly further includes a connection body, the connection body is provided with a first connection structure, the connection assembly rotates to drive the first connection structure to reach the position of the installation structure, and the first connection structure and the installation structure are used to insert fasteners so that the connection body is connected to the installation component.

[0009] According to some embodiments of the present application, the angle adjustment assembly further includes an extension portion, the connection body and the adjustment beads are connected through the extension portion, the second clamping body is provided with a hollow portion, and the extension portion passes through the hollow portion.

[0010] According to some embodiments of the present application, the support assembly further includes a support body, the support body is provided with a second connection structure, and the second connection structure is used to connect the support body to the processing equipment.

[0011] According to some embodiments of the present application, the second connection structure includes a second connection hole, and the second connection hole is used to insert a fastener so that the support body and the processing equipment are connected by the fastener.

[0012] According to some embodiments of the present application, a length adjustment assembly is provided between the support body and the clamping assembly, and the support body and the clamping assembly are slidably connected through the length adjustment assembly to adjust the overall length of the electrode fixture.

[0013] According to some embodiments of the present application, the length adjustment assembly includes a moving member connected to the first clamping body and an adjustment channel provided in the support body, and the moving member is inserted into the adjustment channel and slidably connected to the inner wall of the adjustment channel.

[0014] According to some embodiments of the present application, the length adjustment assembly further includes a locking member, the locking member is connected to the support body, and the locking member is used to insert into the adjustment channel and abut against the moving member so that the moving member is locked in the adjusted position.

[0015] According to the second aspect embodiment of the present application, an electric discharge machine includes an electric discharge machine body and the above-mentioned electrode fixture.

[0016] The electric discharge machine according to the embodiments of the present application has at least the following beneficial effects: The electric discharge machine adopts the electrode fixture of the embodiments of the first aspect. The electrode fixture includes a support assembly, an angle adjustment assembly, and a mounting component; the mounting component is used to connect the electrode, and the support assembly and the angle adjustment assembly form an integral body for connecting the processing equipment and the mounting component, so that the electrode is mounted on the processing equipment, thereby enhancing the bearing capacity of the processing equipment, facilitating the uniform distribution of the gravity of the electrode, and avoiding situations such as displacement, loosening, and insufficient bearing capacity of the electrode, ensuring the processing quality; the angle adjustment assembly is rotatably connected to the support assembly through adjustment beads, and the angle adjustment assembly can adaptively match the mounting structures at different positions of various mounting components, facilitating the connection between the angle adjustment assembly and the mounting component.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the technical solutions disclosed in the present application, and constitute a part of the specification. Together with the embodiments disclosed in the present application, they are used to explain the technical solutions of the present disclosure, and do not constitute a limitation to the technical solutions disclosed in the present application.

[0019] Figure 1 It is a schematic structural diagram of the electrode fixture of the embodiments of the present application applied to an electric discharge machine;

[0020] Figure 2 It is a schematic structural diagram of the electrode fixture of the embodiments of the present application after omitting the mounting component;

[0021] Figure 3 It is a side view of the electrode fixture of the embodiments of the present application after omitting the mounting component;

[0022] Figure 4 It is a schematic structural diagram of the support body in the electrode fixture of the embodiments of the present application;

[0023] Figure 5 It is a schematic structural diagram of the mounting component in the electrode fixture of the embodiments of the present application;

[0024] Figure 6 It is a schematic structural diagram of the first clamping body and the moving component in the electrode fixture of the embodiments of the present application;

[0025] Figure 7 It is a schematic structural diagram of the second clamping body in the electrode fixture of the embodiments of the present application;

[0026] Figure 8 It is a schematic structural diagram of the angle adjustment assembly in the electrode fixture of the embodiments of the present application.

[0027] Reference Signs:

[0028] Support component 100; Support main body 101; Second connection structure 102; First clamping body 103; Second clamping body 104; Hollow part 105; Moving part 106; Adjustment channel 107; Locking part 108;

[0029] Angle adjustment component 200; Adjustment bead 201; Extension part 202; Connection main body 203; First connection structure 204;

[0030] Installation component 300; Installation structure 301;

[0031] Electrode 401; Machine head extension shaft 402. Detailed implementation manners

[0032] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0033] In the description of the present application, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present application, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0036] In the description of this application, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] As Figure 1 , Figure 2 and Figure 3 shown, an electrode fixture is provided in an embodiment of this application. The electrode fixture includes a support assembly 100, an angle adjustment assembly 200, and a mounting component 300. Among them, the support assembly 100 is connected to the angle adjustment assembly 200, and the angle adjustment assembly 200 is connected to the mounting component 300, so that the support assembly 100, the angle adjustment assembly 200, and the mounting component 300 form an integral electrode fixture. At the same time, the support assembly 100 is used to connect to the processing equipment, and the mounting component 300 is used to connect to the electrode 401. Then, the processing equipment installs the electrode 401 through the electrode fixture.

[0038] Furthermore, for the clamping of a large electrode 401, the electrode fixture includes several groups of support assemblies 100 and angle adjustment assemblies 200. Each angle adjustment assembly 200 is commonly connected to the mounting component 300, enhancing the load-bearing capacity of the processing equipment, facilitating a single person to complete the clamping work of the large electrode 401, enabling the gravity of the large electrode 401 to be evenly distributed on the processing equipment, solving problems such as displacement, loosening, and insufficient load-bearing capacity of the electrode 401 during the processing, and avoiding situations such as unqualified processing quality, inability to process due to the excessive weight of the electrode 401, and damage to the mold cavity by the electrode 401.

[0039] In addition, the angle adjustment assembly 200 is rotatably connected to the support assembly 100. The angle adjustment assembly 200 can adapt to various different mounting components 300 through rotation, facilitating the connection between the angle adjustment assembly 200 and the mounting component 300, and can also adapt to the mounting component 300 with an uneven connection surface to a certain extent.

[0040] As Figure 4 shown, in some examples, the support assembly 100 includes a support body 101, and the support assembly 100 is connected to the processing equipment through the support body 101. Specifically, the processing equipment includes an electric discharge machine provided with a machine head extension shaft 402, and the support body 101 is connected to the side wall of the machine head extension shaft 402. At the same time, the support body 101 has a certain length and is formed in a curved shape, so as to extend outward from the machine head extension shaft 402.

[0041] Furthermore, the support body 101 is provided with a second connection structure 102 for connecting the support body 101 to the side wall of the nose extension shaft 402.

[0042] In some examples, the second connection structure 102 includes a second connection hole located at the end of the support body 101 that fits against the side wall of the nose extension shaft 402. It can be understood that a corresponding hole structure is also provided on the side wall of the nose extension shaft 402. During the installation of the support body 101 on the nose extension shaft 402, ensure that the second connection hole communicates with the hole structure of the nose extension shaft 402. The fastener passes through the second connection hole and connects to the hole structure of the nose extension shaft 402. Under the fastening action of the fastener, the support body 101 is detachably connected to the side wall of the nose extension shaft 402. Specifically, the fastener here uses a standard bolt, which facilitates the disassembly and assembly of the fastener.

[0043] Furthermore, the second connection hole has a certain length, increasing the area of the hollowed-out part. The fastener can be connected to the side wall of the nose extension shaft 402 at any position within the range of the second connection hole, thereby adjusting the relative position between the nose extension shaft 402 and the support body 101. Since the angle adjustment assembly 200 is connected to the support assembly 100, during this process, the positions of the angle adjustment assembly 200, the mounting component 300, and the electrode 401 are also adjusted, thus providing a certain amount of adjustment margin for the mounting component 300 and the electrode 401 to improve flexibility.

[0044] In some examples, the angle adjustment assembly 200 includes an adjustment bead 201. The adjustment bead 201 can rotate while remaining connected to the support assembly 100, so the angle adjustment assembly 200 is rotatably connected to the support assembly 100 through the adjustment bead 201. Among them, the adjustment bead 201 is generally formed in a spherical structure.

[0045] Furthermore, as Figure 5 shown, the mounting component 300 for connecting the electrode 401 is generally formed in a plate-like structure. The mounting component 300 is provided with a mounting structure 301 for detachably connecting the angle adjustment assembly 200 to the mounting component 300. It can be understood that the mounting component 300 needs to be set according to the shape of the electrode 401. Different types and sizes of electrodes 401 can be installed through the disassembly and replacement of the mounting component 300 of the electrode clamp.

[0046] Among them, in different installation components 300, the positions of the installation structures 301 are different, and the rotational connection between the angle adjustment component 200 and the support component 100 enables the angle adjustment component 200 to match different positions of the installation structure 301, thereby ensuring that the angle adjustment component 200 can be connected to different installation components 300, improving the versatility and flexibility of the electrode fixture. At the same time, the rotational characteristics of the angle adjustment component 200 can also improve the assembly convenience of the angle adjustment component 200 and the installation component 300.

[0047] As Figure 2 、 Figure 6 and Figure 7 shown, in some examples, the support component 100 includes a clamping component, and the clamping component includes a first clamping body 103 and a second clamping body 104. The first clamping body 103 is detachably connected to the second clamping body 104, and there is a gap between the first clamping body 103 and the second clamping body 104.

[0048] Furthermore, both the first clamping body 103 and the second clamping body 104 are generally formed into plate-like structures, and the first clamping body 103 and the second clamping body 104 are connected by fasteners. Specifically, standard bolts are used as the fasteners here, which is convenient for the disassembly and assembly of the fasteners.

[0049] Among them, the adjusting bead 201 is located between the first clamping body 103 and the second clamping body 104 and abuts against the first clamping body 103 and the second clamping body 104. Then, the gap reserved between the first clamping body 103 and the second clamping body 104 defines a space for arranging the adjusting bead 201, ensuring the stable position of the adjusting bead 201.

[0050] It can be understood that the adjusting bead 201 can rotate between the first clamping body 103 and the second clamping body 104, thereby realizing the rotational connection between the angle adjustment component 200 and the support component 100. As the adjusting bead 201 rotates, the position of the angle adjustment component 200 also changes accordingly, that is, the angle adjustment process is completed, enabling the angle adjustment component 200 to match the installation structure 301 of the installation component 300.

[0051] In some examples, to further improve the versatility and flexibility of the electrode fixture, the length of the electrode fixture can be adjusted. Then, a length adjustment component is provided between the support body 101 and the clamping component. The length adjustment component makes the support body 101 and the clamping component form a sliding connection. During the sliding process, the overall length of the electrode fixture changes.

[0052] As Figure 2 、 Figure 4 and Figure 6As shown, in some examples, the length adjustment assembly includes a moving component 106 and an adjustment channel 107 , the moving component 106 is connected to the first clamping body 103 , and the adjustment channel 107 is disposed on the supporting body 101 .

[0053] The adjusting channel 107 is formed as a hole-shaped hollow structure, the moving part 106 is formed as a strip-shaped structure, and the inner wall size of the adjusting channel 107 is approximately the same as the outer wall size of the moving part 106. The moving part 106 is inserted into the adjusting channel 107 and slidably connected with the inner wall of the adjusting channel 107. During the sliding process of the moving part 106, the overall length of the electrode fixture changes.

[0054] It is understandable that the moving component 106 can also be detached from the adjusting channel 107, so as to reduce the overall length of the electrode fixture and facilitate the transportation of the electrode fixture.

[0055] In some examples, the length adjustment assembly further includes a locking component 108, and the support body 101 is provided with a hole structure for inserting the locking component 108, and the hole structure of the support body 101 is connected with the adjustment channel 107. When the locking component 108 is inserted into the hole structure of the support body 101, the locking component 108 gradually approaches and enters the adjustment channel 107, thereby forming a conflict with the moving component 106 in the adjustment channel 107, and limiting the moving component 106 to the adjusted position, and the electrode fixture is also limited to the adjusted length.

[0056] The locking component 108 includes a fastener. Specifically, the fastener here adopts a standard bolt to facilitate the disassembly and assembly of the fastener, and the hole structure of the support body 101 adopts a threaded hole matching the fastener.

[0057] like Figure 8 As shown, in some examples, the angle adjustment assembly 200 further includes a connecting body 203 , and the angle adjustment assembly 200 is connected to the mounting component 300 via the connecting body 203 .

[0058] The connecting body 203 is provided with a first connecting structure 204 . When the connecting body 203 rotates, the position of the first connecting structure 204 changes accordingly until the first connecting structure 204 reaches the position of the mounting structure 301 .

[0059] Further, the first connection structure 204 includes a first connection hole, and the first connection hole is located at a position where the connection body 203 fits the mounting component 300. At the same time, the mounting structure 301 includes a mounting hole, and the first connection hole and the mounting hole are used to insert a fastener, so that the connection body 203 is connected to the mounting component 300. Specifically, the fastener here also adopts a standard bolt, which is convenient for the disassembly and assembly of the fastener.

[0060] Furthermore, the first connection hole has a certain length, which increases the area of the hollowed-out part. During the rotation of the connection body 203, any position within the sweeping range of the first connection hole with a certain length can be used as the insertion position of the fastener. The diversity of the fastener insertion positions enables the connection body 203 to adapt to various installation components 300 with different structures.

[0061] Specifically, during the rotation of the connection body 203, when the connection body 203 passes through the installation hole, the first connection hole communicates with the installation hole, and the angle adjustment process of the angle adjustment component 200 is completed. The fastener passes through the first connection hole and is inserted into the installation hole, thereby fastening the connection body 203 and the installation component 300.

[0062] It should be noted that the insertion section of the fastener passes through the first connection hole and is fastened in the installation hole, so the outer diameter of the insertion section is smaller than the width of the first connection hole; while the outer diameter of the clamping section of the fastener is larger than the outer diameter of the insertion section, and the outer diameter of the clamping section is also larger than the width of the first connection hole, so that the clamping section of the fastener clamps the connection body 203 with the installation component 300 to ensure the connection between the connection body 203 and the installation component 300.

[0063] As Figure 8 shown, in some examples, the angle adjustment component 200 further includes an extension part 202, and the connection body 203 and the adjustment bead 201 are fixedly connected through the extension part 202.

[0064] Among them, the second clamping body 104 is provided with a hollow part 105, and the extension part 202 passes through the hollow part 105, so that the adjustment bead 201 is located between the first clamping body 103 and the second clamping body 104, while the connection body 203 is located outside the first clamping body 103 and the second clamping body 104.

[0065] In addition, the position of the hollow part 105 facing the adjustment bead 201 is set to a smoothly transitioning shape according to the shape of the adjustment bead 201, further improving the position stability of the adjustment bead 201.

[0066] Specifically, the components of the electrode fixture from the headstock extension shaft 402 to the installation component 300 are: the support body 101, the length adjustment component, the clamping component, and the angle adjustment component 200.

[0067] An embodiment of the present application provides an electric discharge machine, which includes an electric discharge machine body and the above-mentioned electrode fixture. Among them, the headstock of the electric discharge machine body is provided with a headstock extension shaft 402, and the electrode fixture is connected to the headstock through the headstock extension shaft 402.

[0068] Meanwhile, the electrode fixture includes three sets of support components 100 and angle adjustment components 200 that are arranged at intervals. The three angle adjustment components 200 are commonly connected to a mounting component 300, so that the electrode fixture forms a stable triangular positioning; alternatively, the electrode fixture includes four sets of support components 100 and angle adjustment components 200 that are arranged at intervals. The four angle adjustment components 200 are commonly connected to a mounting component 300, so that the electrode fixture forms a stable quadrangular positioning.

[0069] In the actual implementation process, select the support components 100 and angle adjustment components 200 with corresponding sizes according to the actual usage requirements, and then select the corresponding mounting component 300 according to the electrode 401. Change the length of the electrode fixture through the length adjustment component, which facilitates the assembly of the mounting component 300 and the electrode 401 to the electrode fixture, and improves the versatility and flexibility of the electrode fixture; change the angle of the connection body 203 through the angle adjustment component 200, so that the first connection structure 204 matches the mounting structure 301 of the mounting component 300, further facilitating the assembly of the mounting component 300 and the electrode 401 to the electrode fixture, improving the installation convenience, and enabling a single worker to complete the clamping work of the large electrode 401; the coordinated use of multiple sets of support components 100 and angle adjustment components 200 enhances the load-bearing capacity of the EDM machine head, can solve problems such as displacement, loosening, and insufficient bearing capacity during the machining of large electrodes 401, improves the machining quality, and avoids damage to the mold cavity.

[0070] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order mentioned in the operation diagrams. For example, depending on the functions / operations involved, two consecutive blocks shown may actually be executed substantially simultaneously or the blocks can sometimes be executed in the reverse order. In addition, the embodiments presented and described in the flowcharts of the present application are provided by way of example for the purpose of providing a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logical flows presented herein. Alternative embodiments are contemplated where the order of various operations is changed and where sub-operations described as part of a larger operation are executed independently.

[0071] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge scope of those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. An electrode fixture, characterized in that: include: A support assembly, the support assembly being used to connect to a processing device; An angle adjustment assembly, the angle adjustment assembly comprising an adjustment bead, the angle adjustment assembly being rotatably connected to the support assembly via the adjustment bead; The mounting component is used to connect the electrode, and the mounting component is provided with a mounting structure. The angle adjustment component rotates and matches the position of the mounting structure so that the angle adjustment component is connected to the mounting component.

2. The electrode fixture according to claim 1, characterized in that: The supporting assembly includes a clamping assembly, which includes a first clamping body and a second clamping body connected to each other, the first clamping body and the second clamping body are spaced apart, and the adjusting bead rotates between the first clamping body and the second clamping body to adjust the angle of the angle adjusting assembly.

3. The electrode fixture according to claim 2, characterized in that: The angle adjustment assembly also includes a connecting body, which is provided with a first connecting structure. The connecting assembly rotates to drive the first connecting structure to the position of the mounting structure. The first connecting structure and the mounting structure are used to insert fasteners to connect the connecting body to the mounting component.

4. The electrode fixture according to claim 3, characterized in that: The angle adjustment assembly further includes an extension portion, through which the connection body and the adjustment bead are connected, and the second clamping body is provided with a hollow portion, through which the extension portion passes.

5. The electrode fixture according to claim 2, characterized in that: The support assembly further comprises a support body, wherein the support body is provided with a second connection structure, and the second connection structure is used to connect the support body to a processing device.

6. The electrode fixture according to claim 5, characterized in that: The second connection structure includes a second connection hole, and the second connection hole is used to insert a fastener so that the support body and the processing equipment are connected through the fastener.

7. The electrode fixture according to claim 5, characterized in that: A length adjustment component is provided between the support body and the clamping component, and the support body and the clamping component are slidably connected through the length adjustment component to adjust the overall length of the electrode clamp.

8. The electrode fixture according to claim 7, characterized in that: The length adjustment assembly includes a moving component connected to the first clamping body and an adjustment channel arranged on the supporting body. The moving component is inserted into the adjustment channel and is slidably connected to the inner wall of the adjustment channel.

9. The electrode fixture according to claim 8, characterized in that: The length adjustment assembly also includes a locking component, which is connected to the supporting body and is used to be inserted into the adjustment channel and abut against the moving component so that the moving component is locked in an adjusted position.

10. An electric spark machine, characterized in that: It comprises an electric spark machine body and an electrode fixture as claimed in any one of claims 1 to 9.

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