A four-axis clamp

Abstract

The utility model discloses a four -axis clamp, including bottom frame and the clamping structure of bottom frame through the overturning structure connection, the clamping structure includes vertical shaft and expansion taper block, and the top of vertical shaft is provided with conical sink, and four ring setting expansion taper block are provided in conical sink inside, and the bottom sliding of conical sink is provided with guide pillar, and the top of guide pillar is fixedly connected with the bottom of expansion taper block, and the top of expansion taper block is provided with step groove, the design of clamping structure makes work piece can be steady, reliably clamped, through the cooperation of expansion taper block and conical sink, and the drive of guide pillar and the hexagonal head screw rod, has realized the quick clamping to work piece, has improved the stability and reliability of clamping, the setting of spring and return spring has guaranteed the normal reset of expansion taper block in the release process, has improved the repeated use life of clamp, does not need to rely on traditional multiple limiting structure adjustment, and the operation convenience increases, has improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of clamps, specifically a four-axis clamp. Background Technology

[0002] A four-axis fixture is a rotary fixture installed on the A-axis of a CNC machine tool, mainly used for multi-faceted cutting of products.

[0003] In traditional four-axis fixtures, clamping cylindrical workpieces usually requires tightening multiple limit fixtures to form effective limits. This operation is relatively cumbersome and requires a lot of time and effort. Due to the many steps involved, the efficiency of the entire clamping process is low, which affects the overall production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a four-axis fixture that does not require adjustment and release using traditional multiple limiting structures, thus increasing ease of operation and improving work efficiency, and can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a four-axis clamp, including a base frame and a clamping structure connected to the base frame by a flipping structure. The clamping structure includes a vertical shaft and an expansion conical block. A conical groove is provided at the top of the vertical shaft. Four annular expansion conical blocks are arranged inside the conical groove. A guide post is slidably arranged at the bottom of the conical groove. The top of the guide post is fixedly connected to the bottom of the expansion conical block. A stepped groove is provided at the top of the expansion conical block.

[0006] Preferably, the clamping structure further includes a pad and a hexagonal head screw. A horizontal groove is formed in the guide post area of ​​the vertical shaft. A pad is fixedly connected to the inner end of the outer end of the horizontal groove. A hexagonal head screw is threadedly connected to the inner end of the pad. A conical groove is formed on the outer circular side wall of the guide post. A conical block is slidably connected inside the conical groove. The conical block is connected to the pad by a spring. The spring is arranged around the outer side wall of the hexagonal head screw. The bottom end of the guide post is fixedly connected to the bottom of the conical groove by a return spring.

[0007] Preferably, the guide post and the expansion cone block are integrally formed, and the transverse groove is connected to the cone-shaped sink.

[0008] Preferably, the flipping structure includes a flipping platform. The flipping platform is located at the top center of the bottom frame. A first bushing is fixedly connected to the top of one side of the bottom frame, and a second bushing is fixedly connected to the top of the other side. Both sides of the flipping platform are connected to horizontal shafts through connecting parts. The first bushing and the second bushing are rotatably connected to the adjacent horizontal shafts. A stepper motor is installed on the outer side of the second bushing, and its output end is fixedly connected to the adjacent horizontal shaft. The interior of the center of the flipping platform is rotatably connected to a vertical shaft. A gear ring is fixedly sleeved on the outer side of the bottom end of the vertical shaft. A motor is installed at the bottom of the flipping platform, and the output end of the motor is connected to a gear that meshes with the gear ring.

[0009] Preferably, mounting holes are provided at all four corners of the bottom frame, and lifting rings are fixedly connected to the top of both the first bushing and the second bushing.

[0010] Preferably, a protective cover structure is also installed at the bottom of the tilting table. The protective cover structure includes a buckle cover, and a clamping plate is fixedly connected to the top of the front and rear side walls of the buckle cover. An L-shaped hanging rod is fixedly connected to the front and rear faces of the tilting table. The clamping plate has matching hanging holes, and the buckle cover has a heat dissipation groove in the motor area.

[0011] Compared with the prior art, the present invention... 1. The innovative design of the clamping structure enables the workpiece to be clamped stably and reliably. Through the cooperation of the expansion cone block and the cone groove, as well as the drive of the guide post and the hexagonal head screw, the workpiece is clamped quickly and accurately, improving the stability and reliability of the clamping. At the same time, the setting of springs and return springs ensures the normal reset of the expansion cone block during clamping and release, improving the reusability and life of the fixture. It eliminates the need to rely on traditional multiple limit structures for adjustment and release, increasing the convenience of operation and improving work efficiency.

[0012] 2. The combination of L-shaped hanging rods and clamping plates improves the ease of assembly of the cover, while the heat dissipation grooves help dissipate the heat generated by the motor during operation, preventing damage to the motor due to overheating and extending the motor's service life. The cover design provides effective protection for critical components such as the motor, increasing the safety of the area. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A three-dimensional structural diagram from another angle; Figure 3 This is a schematic diagram of the explosive decomposition of the clamping structure and the protective cover structure in this utility model; Figure 4 for Figure 3 A three-dimensional structural diagram from another angle; Figure 5This is a frontal cross-sectional view of the clamping structure in this utility model.

[0014] In the diagram: 1. Base frame; 101. Mounting hole; 2. Flipping structure; 201. Flipping table; 202. Connecting part; 203. First bushing; 204. Horizontal shaft; 205. Stepper motor; 206. Second bushing; 207. Lifting ring; 208. Motor; 209. Gear; 210. Gear ring; 3. Clamping structure; 301. Vertical shaft; 302. Expansion conical block; 303. Conical groove; 304. Stepped groove; 305. Bushing; 306. With hexagonal head screw; 307. Guide post; 308. Conical groove; 309. Conical insert; 310. Horizontal groove; 311. Spring; 312. Return spring; 4. Protective cover structure; 401. Buckle cover; 402. Heat dissipation groove; 403. Clamping plate; 404. Suspension hole; 405. L-shaped hanging rod. Detailed Implementation

[0015] 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 protection scope of the present utility model.

[0016] Please see Figure 1-5 The figure shows a four-axis clamp, including a base frame 1 and a clamping structure 3 connected to the base frame 1 by a flipping structure 2. The clamping structure 3 includes a vertical shaft 301 and an expansion conical block 302. A conical groove 303 is provided at the top of the vertical shaft 301. Four annular expansion conical blocks 302 are arranged inside the conical groove 303. A guide post 307 is slidably arranged at the bottom of the conical groove 303. The top of the guide post 307 is fixedly connected to the bottom of the expansion conical block 302. A stepped groove 304 is provided at the top of the expansion conical block 302.

[0017] The clamping structure 3 also includes a pad 305 and a hexagonal head screw 306. The vertical shaft 301 has a horizontal groove 310 in the area of ​​the guide post 307. The pad 305 is fixedly connected to the inner end of the horizontal groove 310. The hexagonal head screw 306 is threadedly connected to the inner end of the pad 305. The outer circular side wall of the guide post 307 has a conical groove 308. A conical insert 309 is slidably connected inside the conical groove 308. The conical insert 309 is connected to the pad 305 through a spring 311. The spring 311 is arranged around the outer side wall of the hexagonal head screw 306. The bottom end of the guide post 307 is fixedly connected to the bottom of the conical groove 303 through a return spring 312.

[0018] It is worth noting that, firstly, the clamping structure 3 is connected to the bottom frame 1 via the flipping structure 2, allowing the clamping structure 3 to flip around the central axis of the flipping table 201. The flipping action is driven by the stepper motor 205, whose output end is fixedly connected to the horizontal shaft 204 on one side of the flipping table 201. The second bushing 206 enables rotational connection, thereby controlling the flipping angle of the flipping table 201. In the clamping structure 3, the expansion conical block 302 is connected to the vertical shaft 301 via the guide post 307. The expansion conical block 302 can slide within the conical groove 303. When it is necessary to clamp the workpiece, the hexagonal head screw 306 is rotated using an external tool (not shown). The hexagonal head screw 306 is screwed into the threaded part of the bushing 305, pushing the conical insert 309 to slide along the conical groove 308, thereby pushing the guide post 307 to move vertically downwards. The expansion conical block 302 and the conical groove 303 are then clamped together. The groove 303 is matched, so the expansion cone block 302 is pushed to slide down along the inner wall of the cone groove 303 and expand, thereby clamping the workpiece. The action of the spring 311 can make the cone insert 309 return to normal. The action of the return spring 312 can make the expansion cone block 302 return to normal after contacting the limit. When used next time, the cone insert 309 can return to its original position for the next workpiece clamping. The vertical shaft 301 is rotatably connected to the tilting table 201. The gear ring 210 at the bottom of the vertical shaft 301 meshes with the gear 209 driven by the motor 208 at the bottom of the tilting table 201. In this way, when it is necessary to adjust the angle of the workpiece, the motor 208 starts, and through the meshing transmission of the gear 209 and the gear ring 210, the vertical shaft 301 and the clamping structure 3 connected to it can be driven to rotate around the central axis of the tilting table 201, thereby adjusting the angle of the workpiece.

[0019] Please refer to Figure 4 and Figure 5 The guide post 307 is integrally formed with the expansion cone block 302, and the transverse groove 310 is connected with the conical recess 303. The design of the transverse groove 310 allows the expansion cone block 302 to slide smoothly and expand in the conical recess 303 when pushed by an external force. The integrally formed structure of the guide post 307 and the expansion cone block 302 not only enhances the overall mechanical strength, but also ensures the stability and reliability of the expansion process. The transverse groove 310 can also serve as a guide structure to guide the expansion cone block 302 to the correct sliding path in the conical recess 303, ensuring the accuracy and stability of the clamping structure.

[0020] Please see Figure 1 and Figure 2The flipping structure 2 includes a flipping platform 201. The flipping platform 201 is located at the top center of the bottom frame 1. A first bushing 203 is fixedly connected to the top of one side of the bottom frame 1, and a second bushing 206 is fixedly connected to the top of the other side. Both sides of the flipping platform 201 are connected to horizontal shafts 204 through connecting parts 202. The first bushing 203 and the second bushing 206 are rotatably connected to the adjacent horizontal shafts 204. A stepper motor 205 is installed on the outer side of the second bushing 206, and its output end is fixedly connected to the adjacent horizontal shaft 204. The center of the flipping platform 201 is rotatably connected to the vertical shaft 301. A gear ring 210 is fixedly sleeved on the outer side of the bottom end of the vertical shaft 301. A motor 208 is installed at the bottom of the flipping platform 201, and the output end of the motor 208 is connected to a gear 209 that meshes with the gear ring 210.

[0021] This design of the tilting table 201 ensures its stable rotation on the base frame 1, and enables the tilting table 201 to rotate in steps through the precise control of the stepper motor 205, which facilitates precise adjustment of the workpiece angle. The first bushing 203 and the second bushing 206 serve as the support and rotation points of the horizontal axis 204, which not only enhances the rotational stability of the tilting table 201, but also makes the tilting action smoother. In addition, the rotational connection between the vertical axis 301 and the center position of the tilting table 201, as well as the meshing transmission between the gear 209 driven by the motor 208 and the gear ring 210, together constitute the power system for the clamping structure 3 to rotate around the central axis of the tilting table 201, making the entire fixture more efficient and accurate when adjusting the workpiece angle.

[0022] Please see Figure 2 The base frame 1 has mounting holes 101 at all four corners. The top of the first bushing 203 and the second bushing 206 are fixedly connected to lifting rings 207, so as to lift the entire fixture to the designated position for operation, which increases the convenience and flexibility of use. The design of the mounting holes 101 not only facilitates the fixed installation of the base frame 1, but also ensures the stability of the fixture during operation.

[0023] Please refer to Figure 3 and Figure 4 The bottom of the tilting table 201 is also equipped with a protective cover structure 4, which includes a buckle cover 401. The top of the front and rear side walls of the buckle cover 401 are fixedly connected with a card plate 403. The front and rear faces of the tilting table 201 are fixedly connected with L-shaped hanging rods 405. The card plate 403 has matching hanging holes 404. The buckle cover 401 has a heat dissipation groove 402 in the area of ​​the motor 208.

[0024] The L-shaped hanging rod 405 can be inserted into the hanging hole 404, thereby securely installing the cover 401 at the bottom of the tilting table 201. This design makes the installation and removal of the protective cover structure 4 simple and quick. Moreover, through the cooperation of the L-shaped hanging rod 405 and the clamping plate 403, and the setting of the heat dissipation groove 402, it is beneficial to dissipate the heat generated by the motor 208 during operation, avoiding damage to the motor 208 due to overheating and extending the service life of the motor 208. The design of the cover 401 provides effective protection for key components such as the motor 208 and increases the safety of the area.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-axis clamp, comprising a base frame (1) and a clamping structure (3) connected to the base frame (1) via a flipping structure (2), characterized in that, The clamping structure (3) includes a vertical shaft (301) and an expansion conical block (302). A conical groove (303) is provided at the top of the vertical shaft (301). Four annular expansion conical blocks (302) are provided inside the conical groove (303). A guide post (307) is slidably provided at the bottom of the conical groove (303). The top of the guide post (307) is fixedly connected to the bottom of the expansion conical block (302). A stepped groove (304) is provided at the top of the expansion conical block (302).

2. A four-axis clamp according to claim 1, characterized in that: The clamping structure (3) also includes a pad (305) and a hexagonal head screw (306). The vertical shaft (301) is provided with a horizontal groove (310) in the area of ​​the guide post (307). The pad (305) is fixedly connected to the outer end of the horizontal groove (310). The hexagonal head screw (306) is threadedly connected inside the pad (305). The outer circular side wall of the guide post (307) is provided with a conical groove (308). A conical insert (309) is slidably connected inside the conical groove (308). The conical insert (309) is connected to the pad (305) through a spring (311). The spring (311) is arranged around the outer side wall of the hexagonal head screw (306). The bottom end of the guide post (307) is fixedly connected to the bottom of the conical groove (303) through a reset spring (312).

3. A four-axis clamp according to claim 2, characterized in that: The guide post (307) and the expansion cone block (302) are integrally formed, and the transverse groove (310) is connected to the cone sink (303).

4. A four-axis clamp according to claim 1, characterized in that: The flipping structure (2) includes a flipping platform (201). The flipping platform (201) is located at the top center of the bottom frame (1). A first bushing (203) is fixedly connected to the top of one side of the bottom frame (1), and a second bushing (206) is fixedly connected to the top of the other side. Both sides of the flipping platform (201) are connected to a horizontal shaft (204) through a connecting part (202). The first bushing (203) and the second bushing (206) are rotatably connected to the adjacent horizontal shaft (204). A stepper motor (205) is installed on the outer side of the second bushing (206), and its output end is fixedly connected to the adjacent horizontal shaft (204). The interior of the center of the flipping platform (201) is rotatably connected to the vertical shaft (301). A gear ring (210) is fixedly sleeved on the outer side of the bottom end of the vertical shaft (301). A motor (208) is installed at the bottom of the flipping platform (201), and the output end of the motor (208) is connected to a gear (209) meshing with the gear ring (210).

5. A four-axis clamp according to claim 4, characterized in that: The bottom frame (1) has mounting holes (101) at all four corners, and the top of the first bushing (203) and the second bushing (206) are fixedly connected with lifting rings (207).

6. A four-axis clamp according to claim 4, characterized in that: The bottom of the tilting table (201) is also equipped with a protective cover structure (4). The protective cover structure (4) includes a buckle cover (401). The top of the front and rear side walls of the buckle cover (401) are fixedly connected with a card plate (403). The front and rear faces of the tilting table (201) are fixedly connected with L-shaped hanging rods (405). The card plate (403) has matching hanging holes (404). The buckle cover (401) has a heat dissipation groove (402) in the area of ​​the motor (208).

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