Multi-electrode clamp for electrical discharge machining

Abstract

The utility model discloses a multi-electrode fixture for electrical discharge machining, which belongs to the technical field of electrode fixtures, and comprises a top plate and a bottom plate, a plurality of guide rods are slidably connected in the top plate, the lower ends of the guide rods are fixedly connected with the top surface of the bottom plate, a connecting seat is fixed on the top surface of the top plate, and the connecting seat is fixedly connected with the bottom plate. A threaded rod is further in threaded connection with the top face of the connecting base, the lower end of the threaded rod is rotationally connected with the top face of the bottom plate, a handle is fixed to the upper end of the threaded rod, a plurality of mounting cylinders are fixed to the bottom face of the bottom plate, inclined faces are arranged at the lower ends of the mounting cylinders, and movable rods are slidably connected to the upper portions of the inner sides of the mounting cylinders. According to the electrode fixing device, an electrode can be rapidly and preliminarily fixed, the electrode can be conveniently installed, then the electrode is synchronously and finally clamped, and the problems that when the electrode is fixed to a bottom plate through double-end threads, the process is tedious when a large number of electrodes are installed, and therefore work efficiency is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode fixtures, and more specifically, particularly relates to a multi-electrode fixture for electric discharge machining. Background Technique

[0002] Electric discharge machining is applicable to machining conductive materials, such as difficult-to-machine materials like titanium alloy, tool steel, carbon steel, and cemented carbide. This machining technology is based on the principle of electric discharge machining, which is different from the principle of ordinary metal cutting. It uses high-intensity electric pulses generated by a pulse power supply device to generate discharge electric sparks between the tool electrode and the workpiece electrode, thereby achieving the machining of the workpiece. For a multi-electrode fixture for electric discharge machining with the existing application number CN201420683518.5, the electrode is fixed on the bottom plate through double-headed threads. When installing a large number of electrodes, the process is rather cumbersome, thus reducing the work efficiency. Therefore, a multi-electrode fixture for electric discharge machining is proposed. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a multi-electrode fixture for electric discharge machining, which can quickly and preliminarily fix the electrode, facilitate the installation of the electrode, and then synchronously complete the final clamping of the electrode, so as to solve the problem that when the electrode is fixed on the bottom plate through double-headed threads as proposed in the above background technique, the process is rather cumbersome when installing a large number of electrodes, thereby reducing the work efficiency.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A multi-electrode fixture for electric discharge machining, including a top plate and a bottom plate. A plurality of guide rods are slidably connected inside the top plate, and the lower ends of the guide rods are fixedly connected to the top surface of the bottom plate. A connecting seat is fixedly arranged on the top surface of the top plate, and a threaded rod is also threadedly connected to the top surface of the connecting seat. The lower end of the threaded rod is rotatably connected to the top surface of the bottom plate, and a handle is fixedly arranged at the upper end of the threaded rod. A plurality of mounting cylinders are fixedly arranged on the bottom surface of the bottom plate. An inclined surface is provided at the lower end of the mounting cylinder. An activity rod is slidably connected to the upper part inside the mounting cylinder. An activity groove is provided at the lower part outside the activity rod, and a connecting ring is slidably connected to the inside of the activity groove. A clamping groove is provided in the middle inside the mounting cylinder. An activity cylinder is also slidably connected to the middle inside the mounting cylinder. A connecting member is fixedly arranged between the activity cylinder and the connecting ring. Two elastic buckles are fixedly arranged on the top surface of the activity cylinder, and the upper ends of the elastic buckles are in clamping fit with the inside of the clamping groove. A chuck is fixedly arranged on the bottom surface of the activity cylinder. A slot is provided inside the chuck, and a plurality of telescopic slits are also provided on the outside of the chuck.

[0005] As a preferred technical solution of the utility model, the center of the activity rod coincides with the center of the mounting cylinder.

[0006] As a preferred technical solution of the present utility model, the card slot is in an annular structure, and the cross-section of the card slot is in a semi-circular structure.

[0007] As a preferred technical solution of the present utility model, the inner diameter of the movable cylinder is larger than the outer diameter of the movable rod, and the center of the movable cylinder coincides with the center of the mounting cylinder.

[0008] As a preferred technical solution of the present utility model, the chuck is in a frustum shape, and the outer side of the chuck is in sliding contact with the outer side of the inclined surface.

[0009] As a preferred technical solution of the present utility model, the inner diameter of the slot is the same as the inner diameter of the movable cylinder.

[0010] As a preferred technical solution of the present utility model, the upper end of the movable rod penetrates through the inside of the bottom plate and is fixedly connected to the bottom surface of the top plate.

[0011] The present utility model provides a multi-electrode fixture for electrical discharge machining, which has the following beneficial effects:

[0012] 1. The multi-electrode fixture for electrical discharge machining can quickly and preliminarily fix the electrode, facilitating the installation of the electrode. Subsequently, it can synchronously complete the final clamping of the electrode, solving the problem that when the electrode is fixed on the bottom plate through a double-headed thread, the process is rather cumbersome when installing a large number of electrodes, thereby reducing the working efficiency.

[0013] 2. The multi-electrode fixture for electrical discharge machining has a reasonable and compact structure design and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a multi-electrode fixture for electrical discharge machining according to the present utility model.

[0015] Figure 2 It is a schematic diagram of the split structure of a multi-electrode fixture for electrical discharge machining according to the present utility model.

[0016] Figure 3 It is a Figure 2 magnified schematic diagram at position A of a multi-electrode fixture for electrical discharge machining according to the present utility model.

[0017] Figure 4 It is a Figure 3 magnified schematic diagram at position B of a multi-electrode fixture for electrical discharge machining according to the present utility model.

[0018] In the figure: 1. Top plate; 2. Bottom plate; 3. Guide rod; 4. Connecting seat; 5. Threaded rod; 6. Handle; 7. Mounting cylinder; 8. Movable rod; 9. Movable groove; 10. Connecting ring; 11. Card slot; 12. Movable cylinder; 13. Connecting piece; 14. Chuck; 15. Inclined surface; 16. Slot; 17. Expansion joint; 18. Elastic buckle. Detailed implementation mode

[0019] The following further describes in detail the implementation mode of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Please refer to Figures 1 to 4, the present utility model provides a technical solution: a multi - electrode fixture for electrical discharge machining, including a top plate 1 and a bottom plate 2. A plurality of guide rods 3 are slidably connected inside the top plate 1, and the lower ends of the guide rods 3 are fixedly connected to the top surface of the bottom plate 2. A connecting seat 4 is fixedly installed on the top surface of the top plate 1, and a threaded rod 5 is also threadedly connected to the top surface of the connecting seat 4. The lower end of the threaded rod 5 is rotatably connected to the top surface of the bottom plate 2, and the upper end of the threaded rod 5 is fixedly provided with a handle 6. A plurality of mounting cylinders 7 are fixedly installed on the bottom surface of the bottom plate 2. An inclined surface 15 is provided at the lower end of the mounting cylinder 7. An active rod 8 is slidably connected to the upper part inside the mounting cylinder 7. An active groove 9 is provided at the lower part outside the active rod 8. A connecting ring 10 is slidably connected inside the active groove 9. A clamping groove 11 is provided in the middle inside the mounting cylinder 7. An active cylinder 12 is also slidably connected to the middle inside the mounting cylinder 7. A connecting member 13 is fixedly installed between the active cylinder 12 and the connecting ring 10. Two elastic buckles 18 are fixedly installed on the top surface of the active cylinder 12, and the upper ends of the elastic buckles 18 are in clamping fit with the inside of the clamping groove 11. A chuck 14 is fixedly installed on the bottom surface of the active cylinder 12. A slot 16 is provided inside the chuck 14. A plurality of expansion joints 17 are also provided on the outside of the chuck 14. The center of the active rod 8 coincides with the center of the mounting cylinder 7. The clamping groove 11 is in a ring - shaped structure, and the cross - section of the clamping groove 11 is in a semi - circular structure. The inner diameter of the active cylinder 12 is larger than the outer diameter of the active rod 8. The center of the active cylinder 12 coincides with the center of the mounting cylinder 7. The chuck 14 is in a frustum - shaped structure. The outside of the chuck 14 is in sliding contact with the outside of the inclined surface 15. The inner diameter of the slot 16 is the same as the inner diameter of the active cylinder 12. The upper end of the active rod 8 penetrates through the inside of the bottom plate 2 and is fixedly connected to the bottom surface of the top plate 1;

[0023] Insert the electrode into the inner slot 16 of the chuck 14. The electrode enters the interior of the movable cylinder 12 through the slot 16 and pushes the movable cylinder 12 to move. During this process, the movable cylinder 12 drives the elastic buckle 18 to move upward, so that the elastic buckle 18 is engaged with the card slot 11 on the mounting cylinder 7, thereby initially fixing the position of the movable cylinder 12. At the same time, the movable cylinder 12 drives the connecting ring 10 to move upward along the movable slot 9 on the movable rod 8 through the connecting member 13. The movable cylinder 12 drives the chuck 14 to move upward, so that the outer side of the chuck 14 abuts against the inclined surface 15 on the mounting cylinder 7. Under the extrusion of the inclined surface 15, the telescopic joint 17 on the chuck 14 gradually closes, so that the inner side of the slot 16 abuts against the outer side of the electrode, thereby initially fixing the electrode and facilitating the installation of the electrode. After initially fixing all the electrodes, rotate the handle 6 to drive the threaded rod 5 to rotate. The threaded rod 5 drives the top plate 1 to move upward. The top plate 1 drives the movable rod 8 to move upward. The movable rod 8 pulls the movable cylinder 12 and the chuck 14 to move upward through the movable slot 9, the connecting ring 10 and the connecting member 13, so that the extrusion force between the chuck 14 and the inclined surface 15 is further increased, thereby finally clamping the electrode. Through the above process, the electrode can be initially fixed quickly and the installation of the electrode is facilitated. After that, the final clamping of the electrode is completed synchronously, solving the problem that when the electrode is fixed on the bottom plate by a double-headed thread and a large number of electrodes are installed, the process is relatively cumbersome, thus reducing the work efficiency.

[0024] Specific usage mode and function of this embodiment: In the utility model, the electrode is inserted into the inner slot 16 of the chuck 14. The electrode enters the interior of the movable cylinder 12 through the slot 16 and pushes the movable cylinder 12 to move. During this process, the movable cylinder 12 drives the elastic buckle 18 to move upward, so that the elastic buckle 18 is engaged with the card slot 11 on the mounting cylinder 7, thereby initially fixing the position of the movable cylinder 12. At the same time, the movable cylinder 12 drives the connecting ring 10 to move upward along the movable slot 9 on the movable rod 8 through the connecting member 13. The movable cylinder 12 drives the chuck 14 to move upward, so that the outer side of the chuck 14 abuts against the inclined surface 15 on the mounting cylinder 7. Under the extrusion of the inclined surface 15, the telescopic joint 17 on the chuck 14 gradually closes, so that the inner side of the slot 16 abuts against the outer side of the electrode, thereby initially fixing the electrode. After initially fixing all the electrodes, rotate the handle 6 to drive the threaded rod 5 to rotate. The threaded rod 5 drives the top plate 1 to move upward. The top plate 1 drives the movable rod 8 to move upward. The movable rod 8 pulls the movable cylinder 12 and the chuck 14 to move upward through the movable slot 9, the connecting ring 10 and the connecting member 13, so that the extrusion force between the chuck 14 and the inclined surface 15 is further increased, thereby finally clamping the electrode.

[0025] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A multi-electrode fixture for electrical discharge machining, comprising a top plate (1) and a bottom plate (2), characterized in that: The top plate (1) is internally slidably connected to a plurality of guide rods (3), the lower ends of the guide rods (3) are fixedly connected to the top surface of the bottom plate (2), the top surface of the top plate (1) is fixedly connected to a connection seat (4), the top surface of the connection seat (4) is also threadedly connected to a threaded rod (5), the lower ends of the threaded rods (5) are rotatably connected to the top surface of the bottom plate (2), the upper ends of the threaded rods (5) are fixed to a handle (6), the bottom surface of the bottom plate (2) is fixed to a plurality of mounting tubes (7), the lower ends of the mounting tubes (7) are provided with inclined surfaces (15), the upper inner portions of the mounting tubes (7) are slidably connected to a movable rod (8), the lower outer portions of the movable rods (8) are provided with movable grooves (9), and the lower outer portions of the movable rods (8) are provided with movable grooves (10). ), a connecting ring (10) is slidably connected to the inner side of the movable groove (9), a slot (11) is provided in the middle of the inner side of the installation tube (7), a movable tube (12) is also slidably connected to the middle of the inner side of the installation tube (7), a connecting piece (13) is fixed between the movable tube (12) and the connecting ring (10), two elastic clips (18) are fixed to the top surface of the movable tube (12), the upper ends of the elastic clips (18) are snap-fitted with the inner side of the slot (11), a chuck (14) is fixed to the bottom surface of the movable tube (12), a slot (16) is provided inside the chuck (14), and a plurality of expansion joints (17) are also provided on the outer side of the chuck (14).

2. A multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The center of the circle of the movable rod (8) coincides with the center of the circle of the installation cylinder (7).

3. The multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The clamping slot (11) is in an annular structure, and the cross section of the clamping slot (11) is in a semicircular structure.

4. The multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The inner diameter of the movable cylinder (12) is greater than the outer diameter of the movable rod (8), and the center of the movable cylinder (12) coincides with the center of the installation cylinder (7).

5. The multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The clamp (14) is in a truncated cone-shaped structure, and the outer side of the clamp (14) is in sliding contact with the outer side of the inclined surface (15).

6. The multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The inner diameter of the slot (16) is the same as the inner diameter of the movable cylinder (12).

7. The multi-electrode fixture for electric discharge machining according to claim 1, characterized in that: The upper end of the movable rod (8) passes through the interior of the bottom plate (2) and is fixedly connected to the bottom surface of the top plate (1).

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