Workpiece clamping device for electro-processing

Abstract

The utility model belongs to mechanical clamping tool technical field, specifically speaking is a workpiece clamping device for electric processing, including clamping tooth, the inner surface of clamping tooth is provided with frictional grain, the inside of clamping tooth bottom moves and installs the pivot, the inside of pivot and located clamping tooth bottom's inside swing joint has the outer ear board, the inside fixed connection of outer ear board has the upper plate, the inside swing installation of upper plate has the screw rod, through the setting of clamping tooth, the workpiece is formed clamping fixed with facility, to facilitate subsequent electric processing to it, the overall shape of clamping tooth is big thumb shape, the contactable area of inside and workpiece is relatively smaller, and the inner surface of clamping tooth still is provided with frictional grain, can further reduce the contact area with workpiece, frictional grain still can further enhance the clamping degree to workpiece, clamping tooth can be controlled by first motor and do the movement of opening and closing.

Description

Technical Field

[0001] This utility model relates to the field of mechanical clamping tooling technology, specifically a workpiece clamping device for electrical discharge machining. Background Technology

[0002] In the field of machining, especially in the field of laser welding, the machining of workpieces with internal holes and external circles and high precision needs to be carried out under clamping conditions.

[0003] For example, a workpiece clamping device for electrical discharge machining (EDM) disclosed in CN219151794U includes a horizontally arranged base plate, a fixing plate fixed to the side of the base plate, a first locating pin for limiting the position of a guide vane on the y-axis, a second locating pin for limiting the position of the guide vane on the z-axis, and a third locating pin for limiting the position of the guide vane on the x-axis. A pressure plate that cooperates with the first locating pin to clamp the guide vane is detachably connected to the base plate. A connecting assembly adapted to an Erowa fixture is fixedly connected below the base plate. This patent, by setting three position-specific locating pins and a pressure plate, comprehensively fixes the guide vane. The connecting assembly below the base plate, in cooperation with the Erowa fixture, stably fixes the guide vane on the machine tool, solving the technical problem that conventional clamping devices cannot simultaneously adapt to the special shape of the guide vane and the working mode of the Erowa fixture on the machine tool.

[0004] However, based on the working principle proposed in the aforementioned patent, the applicant believes that although the aforementioned device enhances adaptability to a certain extent, in actual use, when performing electrical discharge machining on the workpiece, it is necessary to reduce the contact area between the clamp and the workpiece to prevent it from affecting the processing quality of the workpiece, as the aforementioned device has a large contact area with the workpiece.

[0005] Therefore, a workpiece clamping device for electrical discharge machining is proposed to address the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of having a large contact area with the workpiece, which easily affects the workpiece processing quality. To this end, we propose a workpiece clamping device for electrical discharge machining.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a workpiece clamping device for electrical discharge machining, including clamping teeth; the inner surface of the clamping teeth is provided with friction texture; a rotating shaft is movably installed on the inner side of the bottom of the clamping teeth; an outer ear plate is movably connected to the inner side of the rotating shaft and the inner side of the bottom of the clamping teeth; an upper plate is fixedly connected to the inner side of the outer ear plate; a lead screw is movably installed on the inner side of the upper plate; a first motor is fixedly installed at the bottom of the lead screw; and a limit plate is fixedly installed at the top of the lead screw.

[0008] Preferably, a fixing plate is fixedly installed on the outer side of the first motor, and connecting rods are fixedly installed on all four sides of the fixing plate.

[0009] Preferably, an upper plate is fixedly installed on the inner side of the clamping teeth, and a control plate is movably installed on the outer side of the upper plate.

[0010] Preferably, the bottom of the control plate is movably connected to an inner ear plate, and a movable plate is fixedly installed on the inner side of the inner ear plate, with the movable plate threaded onto the surface of the lead screw.

[0011] Preferably, a lower plate is fixedly installed at the bottom of the connecting rod, and a threaded block is fixedly installed at the bottom of the lower plate.

[0012] Preferably, a long screw is threaded onto the inner side of the threaded block, and the long screw is movably mounted on the inner side of the base plate.

[0013] Preferably, a second motor is fixedly installed at the outer end of the long screw and on one side of the base plate, and a fixing plate is fixedly installed on both sides of the base plate, with fixing holes provided on the surface of the fixing plate.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of clamping teeth, facilitates the clamping and fixing of the workpiece, making it convenient for subsequent electrical discharge machining (EDM). The overall shape of the clamping teeth is thumb-shaped, with a relatively small contact area with the workpiece. Furthermore, the inner surface of the clamping teeth is provided with friction texture, which further reduces the contact area with the workpiece and enhances the clamping force. The clamping teeth can be controlled by a first motor to open and close. The first motor can control the rotation direction of the lead screw to make the movable plate move up and down reciprocatingly. When the movable plate rises, the clamping teeth are pushed outward by the control plate, thereby opening the clamping teeth. Conversely, when the movable plate falls, the clamping teeth are pulled inward by the control plate, thereby tightening the clamping teeth. This device clamps the workpiece by opening and closing the clamping teeth, and because the contact area between the clamping teeth and the workpiece is small, it does not significantly affect the EDM of the workpiece.

[0016] 2. This utility model enhances the installation strength of the first motor through the fixed plate, strengthens the installation strength of the upper and lower plates through the connecting rod, enhances the control capability of the screw rotation on the clamping teeth through the upper connecting plate, inner ear plate, and control plate, facilitates the lifting and lowering movement of the screw through the movable plate, provides a space for the threaded block to be installed through the lower plate, facilitates the user to control the displacement of the entire clamping device through the threaded block and the long screw, provides a space for the long screw to be installed through the base plate, facilitates the operation of the long screw through the second motor, and facilitates the fixing of the entire base plate through the connecting plate and fixing holes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model after installation.

[0019] Figure 2 This is a magnified, bottom-view perspective view of the clamping tooth structure of this utility model.

[0020] Figure 3 This is a magnified top-view perspective of the clamping tooth structure of this utility model;

[0021] Figure 4 This is a partially enlarged three-dimensional schematic diagram of the clamping tooth structure of this utility model;

[0022] Figure 5 This is a partially enlarged three-dimensional cross-sectional view of the drive motor structure of this utility model.

[0023] In the diagram: 1. Clamping teeth; 2. Friction pattern; 3. Rotating shaft; 4. Outer ear plate; 5. Upper plate; 6. Lead screw; 7. First motor; 8. Limiting plate; 9. Fixing plate; 10. Connecting rod; 11. Upper connecting plate; 12. Control plate; 13. Inner ear plate; 14. Movable plate; 15. Lower plate; 16. Threaded block; 17. Long screw; 18. Base plate; 19. Second motor; 20. Connecting plate; 21. Fixing hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a workpiece clamping device for electrical discharge machining. (Refer to...) Figure 3 and Figure 5 A workpiece clamping device for electrical discharge machining includes clamping teeth 1; the inner surface of the clamping teeth 1 is provided with friction texture 2; a rotating shaft 3 is movably installed on the inner side of the bottom of the clamping teeth 1; an outer ear plate 4 is movably connected to the inner side of the rotating shaft 3 and the inner side of the bottom of the clamping teeth 1; an upper plate 5 is fixedly connected to the inner side of the outer ear plate 4; a lead screw 6 is movably installed on the inner side of the upper plate 5; a first motor 7 is fixedly installed at the bottom of the lead screw 6; and a limit plate 8 is fixedly installed at the top of the lead screw 6; the clamping teeth 1 facilitates the clamping and fixing of the workpiece to facilitate subsequent electrical discharge machining; the overall shape of the clamping teeth 1 is thumb-shaped, and the contact area between the inside and the workpiece is relatively small; the friction texture 2 on the inner surface of the clamping teeth 1 can further reduce the contact area with the workpiece, and the friction texture 2 can further enhance the clamping degree of the workpiece.

[0027] Reference Figure 2 and Figure 3 A fixing plate 9 is fixedly installed on the outside of the first motor 7, and connecting rods 10 are fixedly installed on all four sides of the fixing plate 9. The fixing plate 9 helps to enhance the installation strength of the first motor 7, and the connecting rods 10 help to enhance the installation strength of the upper plate 5 and the lower plate 15.

[0028] Reference Figure 4 and Figure 5 An upper connecting plate 11 is fixedly installed on the inner side of the clamping tooth 1, and a control plate 12 is movably installed on the outer side of the upper connecting plate 11. The upper connecting plate 11, the inner ear plate 13, and the control plate 12 facilitate the enhancement of the control capability of the screw 6 on the clamping tooth 1.

[0029] Reference Figure 4 and Figure 5 The bottom of the control panel 12 is movably connected to an inner ear plate 13, and a movable plate 14 is fixedly installed on the inner side of the inner ear plate 13. The movable plate 14 is threaded onto the surface of the lead screw 6; the movable plate 14 facilitates the lead screw 6 to move up and down.

[0030] Reference Figure 2 and Figure 4A lower plate 15 is fixedly installed at the bottom of the connecting rod 10, and a threaded block 16 is fixedly installed at the bottom of the lower plate 15; the lower plate 15 facilitates the provision of a space for the threaded block 16 to be installed.

[0031] Reference Figure 1 The threaded block 16 has a long screw 17 installed on its inner thread. The long screw 17 is movably installed on the inner side of the base plate 18. The threaded block 16 and the long screw 17 facilitate the user to control the displacement of the entire clamping device, and the base plate 18 provides a space for the long screw 17 to be installed.

[0032] Reference Figure 1 A second motor 19 is fixedly installed at the outer end of the long screw 17 and on one side of the base plate 18. A fixing plate 20 is fixedly installed on both sides of the base plate 18. The fixing plate 20 has a fixing hole 21 on its surface. The second motor 19 can drive the long screw 17 to rotate, and the fixing plate 20 and fixing hole 21 can fix the entire base plate 18.

[0033] Working principle: The clamping teeth 1 in this device are shaped like a thumb. The workpiece can be clamped by opening and closing the clamping teeth 1. Since the contact area between the clamping teeth 1 and the workpiece is small, it can avoid affecting the electrical discharge machining of the workpiece too much. In use, the clamping teeth 1 can be controlled by the first motor 7 to open and close. The first motor 7 can control the rotation direction of the lead screw 6 to make the movable plate 14 move up and down reciprocatingly. When the movable plate 14 rises, the clamping teeth 1 are pushed outward by the control plate 12, so that the clamping teeth 1 can open. Conversely, when the movable plate 14 falls, the clamping teeth 1 are pulled inward by the control plate 12, so that the clamping teeth 1 can tighten.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A workpiece clamping device for electrical discharge machining, characterized in that: It includes a clamping tooth (1); the inner surface of the clamping tooth (1) is provided with friction texture (2); a rotating shaft (3) is movably installed on the inner side of the bottom of the clamping tooth (1); an outer ear plate (4) is movably connected to the inner side of the rotating shaft (3) and the inner side of the bottom of the clamping tooth (1); an upper plate (5) is fixedly connected to the inner side of the outer ear plate (4); a lead screw (6) is movably installed on the inner side of the upper plate (5); a first motor (7) is fixedly installed at the bottom of the lead screw (6); and a limit plate (8) is fixedly installed at the top of the lead screw (6).

2. The workpiece clamping device for electrical discharge machining according to claim 1, characterized in that: A fixing plate (9) is fixedly installed on the outside of the first motor (7), and connecting rods (10) are fixedly installed around the fixing plate (9).

3. The workpiece clamping device for electrical discharge machining according to claim 1, characterized in that: An upper plate (11) is fixedly installed on the inner side of the clamping teeth (1), and a control plate (12) is movably installed on the outer side of the upper plate (11).

4. The workpiece clamping device for electrical discharge machining according to claim 3, characterized in that: The bottom of the control plate (12) is movably connected to an inner ear plate (13), and a movable plate (14) is fixedly installed on the inner side of the inner ear plate (13). The movable plate (14) is threaded onto the surface of the lead screw (6).

5. The workpiece clamping device for electrical discharge machining according to claim 2, characterized in that: A lower plate (15) is fixedly installed at the bottom of the connecting rod (10), and a threaded block (16) is fixedly installed at the bottom of the lower plate (15).

6. The workpiece clamping device for electrical discharge machining according to claim 5, characterized in that: The inner thread of the threaded block (16) is fitted with a long screw (17), which is movably mounted on the inner side of the base plate (18).

7. The workpiece clamping device for electrical discharge machining according to claim 6, characterized in that: A second motor (19) is fixedly installed at the outer end of the long screw (17) and on one side of the base plate (18). A fixing plate (20) is fixedly installed on both sides of the base plate (18), and a fixing hole (21) is opened on the surface of the fixing plate (20).

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