Numerical control clamp of electric spark machine tool

Abstract

The utility model relates to the technical field of electric spark machine tools, and provides an electric spark machine tool numerical control clamp which comprises a base and a workbench arranged above the base, and a plurality of notches are formed in the top of the workbench. The clamping block is arranged in the notch, the clamping block is driven by a driving mechanism arranged on the base to move, and a groove is formed in the top of the clamping block. The clamping block moves along the guide polish rod through the driving mechanism, the clamping block makes contact with the side face of the workpiece for clamping, meanwhile, the first electric push rod drives the U-shaped block to move upwards, the first connecting rod rotates, the first connecting rod drives the pressing block to rotate to be in the horizontal state, and therefore the pressing head makes contact with the upper end face of the workpiece for pressing and fixing. Therefore, the effect of automatically clamping, pressing and fixing the workpiece is achieved, the clamping effect and the machining efficiency of the workpiece are effectively improved, the pressing head is convenient to adjust and replace, and the use flexibility is further improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining (EDM) machine tool technology, and specifically to a CNC fixture for an EDM machine tool. Background Technology

[0002] Electrical discharge machining (EDM) machines are special machine tools that use the principle of electrical discharge machining to process conductive materials. They are also known as electro-erosion machining (EDM) machines. EDM machines are mainly used to process various high-hardness materials (such as cemented carbide and hardened steel) and complex-shaped molds and parts, as well as for cutting, grooving, and removing tools broken off inside workpiece holes (such as drill bits and taps).

[0003] A known authorized patent with application number CN202122798356.2 discloses a CNC fixture for an electrical discharge machining (EDM) machine tool. Its background art addresses the problem that "in the prior art, a CNC fixture is generally used to clamp two opposing surfaces of a workpiece, but this clamping method only clamps two surfaces of the workpiece, and the workpiece may not be properly clamped." To address this problem, the technical solution is described as follows: "It includes a base plate, with support seats installed on both sides of the base plate. A sliding rod is installed on one side of the two support seats that are close to each other. A horizontal clamping mechanism is installed on the sliding rod. A drive rod is slidably installed on the side of one of the support seats, and one end of the drive rod is rotatably connected to the horizontal clamping mechanism."

[0004] However, in implementing the relevant technology, the following problems were found with the above technical solution: When using it, the clamping mechanism clamps the side of the workpiece by pulling the pull rod, and then the bolt is rotated to fix the pull rod. The operation process is cumbersome and time-consuming, which can easily affect the processing efficiency. In addition, it is inconvenient to press and fix the upper end of the workpiece. When fixing the ring-shaped workpiece, the contact surface between the clamping mechanism and the support block and the ring-shaped part is small, which makes it difficult to ensure the stability of the workpiece. It is easy to cause the workpiece to deviate from the fixture, thereby reducing the clamping effect and processing efficiency of the workpiece. Utility Model Content

[0005] This utility model proposes a CNC fixture for an electrical discharge machining (EDM) machine tool, which solves the problems in related technologies where the clamping operation is cumbersome and time-consuming, easily affecting processing efficiency, and it is inconvenient to clamp and fix the upper end of the workpiece, which easily causes the workpiece to shift from the fixture.

[0006] The technical solution of this utility model is as follows: A CNC fixture for an electrical discharge machining machine tool includes: a base and a worktable disposed above it, wherein the top of the worktable is provided with multiple slots;

[0007] A clamping block is located inside the slot, and the clamping block is moved by a driving mechanism located on the base. The top of the clamping block is provided with a groove.

[0008] One electric actuator is fixedly installed in the groove;

[0009] A U-shaped block fixedly connected to one output end of an electric actuator;

[0010] Link 1 is connected within the U-shaped block;

[0011] A clamping block is movably connected to the top of the clamping block and is movably connected to the connecting rod, and the clamping block is provided with a screw hole;

[0012] And a press head that is threaded into a screw hole.

[0013] Preferably, a guide light rod is fixedly installed inside the slot, and the clamping block is slidably connected to the surface of the guide light rod.

[0014] Preferably, a plurality of connecting blocks are fixedly installed on the base, and the plurality of connecting blocks are evenly distributed in a circular shape, and the worktable is fixedly installed on the connecting blocks.

[0015] Preferably, the driving mechanism includes a movable cylinder rotatably connected between the base and the worktable, a rotating disk fixedly installed on the surface of the movable cylinder, a plurality of connecting rods movably connected to the bottom of the rotating disk, and a power component provided on the base for driving the movable cylinder to rotate, wherein the plurality of connecting rods are movably connected to a plurality of clamping blocks respectively.

[0016] The power components include a large gear fixedly mounted on the surface of the movable cylinder and located below the rotating disk, a motor fixedly mounted on the top of the base, and a small gear fixedly connected to the output end of the motor and meshing with the large gear.

[0017] Preferably, a storage slot is provided at the top center of the workbench, and a top plate is provided inside the storage slot. An electric push rod two is fixedly installed at the bottom of the workbench, and the output end of the electric push rod two movably passes through the workbench and connects to the top plate.

[0018] Preferably, a rubber pad is fixedly installed on the top of the top plate, and a sealing ring is fixedly installed on the outer circumferential surface of the top plate.

[0019] The working principle and beneficial effects of this utility model are as follows:

[0020] The driving mechanism moves the clamping block along the guide rod, causing it to contact and clamp the workpiece from the side. Simultaneously, an electric push rod moves the U-shaped block upward, causing the connecting rod to rotate. This, in turn, causes the pressing block to rotate to a horizontal position, bringing the pressing head into contact with the upper surface of the workpiece for clamping and fixing. This achieves automatic clamping and fixing of the workpiece, avoiding the small contact area between the ring-shaped part and the clamping block that could affect stability. It effectively improves the clamping effect and processing efficiency. Furthermore, the pressing head uses a screw connection, facilitating adjustment and replacement, further enhancing its flexibility. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a cross-sectional perspective view of the clamping block of this utility model.

[0025] Figure 4 This is a cross-sectional perspective view of the base of this utility model.

[0026] Figure 5 This is a cross-sectional three-dimensional structural diagram of the workbench of this utility model.

[0027] In the diagram: 1. Base; 2. Workbench; 3. Clamping block; 4. Electric push rod one; 5. U-shaped block; 6. Connecting rod one; 7. Pressing block; 8. Pressing head; 9. Guide light rod; 10. Connecting block; 11. Movable cylinder; 12. Rotating disk; 13. Connecting rod two; 14. Large gear; 15. Motor; 16. Small gear; 17. Electric push rod two; 18. Top plate; 19. Rubber pad. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0029] Example 1

[0030] Please see Figure 1 - Figure 5 The present invention provides a CNC fixture for an electrical discharge machining machine tool, comprising: a base 1 and a worktable 2 disposed above it, wherein the top of the worktable 2 is provided with multiple slots;

[0031] The clamping block 3 is located inside the slot. The clamping block 3 is moved by a drive mechanism located on the base 1. The top of the clamping block 3 is provided with a groove.

[0032] Electric push rod 4, fixedly installed in the groove;

[0033] U-shaped block 5 is fixedly connected to the output end of electric actuator 4;

[0034] Link 6 is movably connected within the U-shaped block 5;

[0035] A clamping block 7 is movably connected to the top of the clamping block 3 and movably connected to the connecting rod 6. A screw hole is provided on the clamping block 7.

[0036] And a press head 8 threaded into a screw hole, wherein the end of the press head 8 is made of anti-slip rubber.

[0037] A guide light rod 9 is fixedly installed inside the slot, and a clamping block 3 is slidably connected to the surface of the guide light rod 9.

[0038] Multiple connecting blocks 10 are fixedly installed on the base 1. The multiple connecting blocks 10 are evenly distributed in a circular shape, and the worktable 2 is fixedly installed on the connecting blocks 10.

[0039] The technical solution provided in this embodiment is as follows: During use, the workpiece is placed on the worktable 2, and the clamping block 3 is moved along the surface of the guide rod 9 by the driving mechanism, so that the clamping block 3 contacts and clamps the side of the workpiece. At the same time, the electric push rod 4 drives the U-shaped block 5 to move upward, causing the connecting rod 6 to rotate. Under the action of the connecting rod 6, the pressing block 7 is rotated from the vertical state to the horizontal state, so that the pressing head 8 contacts the upper end surface of the workpiece and presses and fixes it. Therefore, the effect of automatic clamping and pressing and fixing of the workpiece is achieved, avoiding the situation where the small contact surface between the ring part and the clamping block 3 easily affects the stability. This effectively improves the clamping effect and processing efficiency of the workpiece. Moreover, the pressing head 8 adopts a screw connection, which is convenient to adjust according to the height of the workpiece, and it is also convenient to change different shapes, further improving the flexibility of use.

[0040] Furthermore, the drive mechanism includes a movable cylinder 11 rotatably connected between the base 1 and the worktable 2, a rotating disk 12 fixedly installed on the surface of the movable cylinder 11, a plurality of connecting rods 13 movably connected to the bottom of the rotating disk 12, and a power component provided on the base 1 for driving the movable cylinder 11 to rotate. The plurality of connecting rods 13 are movably connected to a plurality of clamping blocks 3 respectively.

[0041] The power components include a large gear 14 fixedly mounted on the surface of the movable cylinder 11 and located below the rotating disk 12, a motor 15 fixedly mounted on the top of the base 1, and a small gear 16 fixedly connected to the output end of the motor 15 and meshing with the large gear 14.

[0042] Specifically, when the workpiece is placed on the worktable 2, the motor 15 drives the pinion 16 to rotate, and the pinion 16 drives the large gear 14 that meshes with it to rotate, thereby causing the movable cylinder 11 to drive the rotating disk 12 to rotate. When the rotating disk 12 rotates, it can drive the clamping block 3 to slide along the surface of the guide rod 9 under the action of the connecting rod 13, so that the clamping block 3 abuts against the side of the workpiece for clamping. In addition, since multiple clamping blocks 3 move synchronously, the centering and clamping of the workpiece can be achieved.

[0043] Example 2

[0044] Based on Embodiment 1, in this embodiment: a storage groove is provided at the top center of the workbench 2, and a top plate 18 is provided in the storage groove. An electric push rod 17 is fixedly installed at the bottom of the workbench 2. The output end of the electric push rod 17 moves through the workbench 2 and connects with the top plate 18. The electric push rod 17 is located inside the movable cylinder 11.

[0045] A rubber pad 19 is fixedly installed on the top of the top plate 18, and a sealing ring is fixedly installed on the outer circumferential surface of the top plate 18.

[0046] The technical solution provided in this embodiment is as follows: By setting a rubber pad 19, when the workpiece is placed on top, the rubber pad 19 can prevent the workpiece from directly contacting the worktable 2, which helps to prevent wear on the workpiece. After the workpiece is processed, the electric push rod 17 drives the top plate 18 to move upward out of the storage groove, thereby enabling the workpiece to move upward, making it convenient for the worker to remove the workpiece from the worktable 2. Then, the electric push rod 17 drives the top plate 18 to move downward and reset. Under the action of the sealing ring, the sealing between the top plate 18 and the storage groove can be guaranteed, preventing processing debris from entering the storage groove and affecting the top plate 18.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electric discharge machine tool numerical control fixture, characterized by, Include: Base (1) and set above the workbench (2), the top of the workbench (2) is provided with a plurality of slots; The clamping block (3) is arranged in the slot, the clamping block (3) is moved by the driving mechanism arranged on the base (1), the top of the clamping block (3) is provided with a groove; The electric push rod one (4) is fixedly installed in the groove; The U-shaped block (5) is fixedly connected to the output end of the electric push rod one (4); The connecting rod one (6) is movably connected in the U-shaped block (5); The pressing block (7) is movably connected to the top of the clamping block (3) and the connecting rod one (6), the pressing block (7) is provided with a threaded hole; And the pressing head (8) is screwed into the threaded hole.

2. The electric discharge machine tool numerical control clamp according to claim 1, characterized in that, The guiding light rod (9) is fixedly installed in the slot, the clamping block (3) is slidably connected to the surface of the guiding light rod (9).

3. The electric discharge machine tool numerical control clamp according to claim 1, characterized in that, A plurality of connecting blocks (10) are fixedly installed on the base (1), the plurality of connecting blocks (10) are evenly distributed in the form of a ring, and the workbench (2) is fixedly installed on the connecting block (10).

4. The electric discharge machine tool numerical control clamp of claim 1, wherein The driving mechanism includes a movable cylinder (11) rotatably connected between the base (1) and the workbench (2), a rotating disc (12) fixedly installed on the surface of the movable cylinder (11), a plurality of connecting rods two (13) movably connected to the bottom of the rotating disc (12), and a power component arranged on the base (1) for driving the movable cylinder (11) to rotate, and the plurality of connecting rods two (13) are movably connected with the plurality of clamping blocks (3).

5. The electric discharge machine tool numerical control clamp according to claim 4, characterized in that, The power component includes a large gear (14) fixedly installed on the surface of the movable cylinder (11) and located below the rotating disc (12), a motor (15) fixedly installed on the top of the base (1), and a small gear (16) fixedly connected to the output end of the motor (15) and engaged with the large gear (14).

6. The electric discharge machine tool numerical control clamp of claim 1, wherein The top center of the workbench (2) is provided with a receiving groove, the receiving groove is provided with a top plate (18), the bottom of the workbench (2) is fixedly provided with an electric push rod two (17), and the output end of the electric push rod two (17) is movably connected through the workbench (2) and the top plate (18).

7. The electric discharge machine tool numerical control clamp according to claim 6, characterized in that, The top of the top plate (18) is fixedly provided with a rubber pad (19), and the outer circumferential surface of the top plate (18) is fixedly provided with a sealing ring.

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