Six-jaw chuck structure with guide rail type jaw transmission assembly

Abstract

The utility model belongs to the field of chucks, and particularly relates to a six-jaw chuck structure with a guide rail type clamping jaw transmission assembly, which comprises a top plate, a lifting assembly is fixedly connected to the edge of the bottom of the top plate, a chuck is fixedly connected to the bottom of the lifting assembly, a sliding groove is formed in the chuck, and the guide rail type clamping jaw transmission assembly is arranged in the sliding groove. The surface of the sliding groove is in lap joint with a rolling shaft, and one side of the rolling shaft is in lap joint with a clamping jaw. Through the structural design of the sliding grooves and the rolling shafts, after the six-jaw chuck is driven by an external driving structure, the helical racks and the plane threads, in the process that the clamping jaws contract towards the center to clamp a workpiece, friction between the clamping jaws and the sliding grooves is converted into rolling friction from sliding friction through rotation of the rolling shafts, friction loss in the clamping jaw sliding process is reduced, and the service life of the six-jaw chuck is prolonged. The problem that the precision of the six-jaw chuck is reduced due to the fact that the sliding positions of the jaws and the chuck are abraded due to long-term use is solved, and the service life of the six-jaw chuck is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of chucks, specifically a six-jaw chuck structure with a guide rail type jaw transmission component. Background Technology

[0002] A six-jaw chuck is a type of clamping device used on machine tools, primarily for holding workpieces for precision machining. Unlike common chucks, a six-jaw chuck has six jaws that can move independently or synchronously. Its design aims to provide more uniform clamping force and higher positioning accuracy, making it particularly suitable for thin-walled, easily deformable, or high-precision workpieces.

[0003] In the prior art, such as in CN220116772U, a six-jaw chuck clamping and positioning fixture is disclosed. It includes a chuck body, with six sets of jaws arranged circumferentially on the chuck body. A support plate is arranged in the area surrounded by the six sets of jaws. Multiple support columns of equal height are arranged on the support plate. An air tightness detection hole is opened on the end face of each support column. An air passage connecting the air tightness detection hole is opened in the support plate and the chuck body.

[0004] While the aforementioned patent facilitates the detection of whether parts are placed correctly and improves processing efficiency by setting up an airtightness detection function and an anti-misalignment pin, the six-jaw chuck experiences wear on the sliding position between the jaws and the chuck during long-term use, reducing the movement accuracy of the jaws and thus affecting the processing of parts. In addition, due to the height of the parts and the installation position of the chuck, it is not convenient to adjust the height of the jaws to clamp parts of different heights. Therefore, to address the above problems, a six-jaw chuck structure with a guide rail type jaw transmission assembly is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve the problems of wear and tear on the sliding position of the jaws and chuck due to long-term use, resulting in decreased clamping accuracy and difficulty in adjusting the height of the jaws to clamp parts of different heights, this utility model proposes a six-jaw chuck structure with a guide rail type jaw transmission assembly.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a six-jaw chuck structure with guide rail type chuck transmission component, including a top plate, a lifting component fixedly connected to the bottom edge of the top plate, a chuck fixedly connected to the bottom of the lifting component, a sliding groove opened inside the chuck, a roller overlapping the surface of the sliding groove, and a chuck claw overlapping one side of the roller.

[0007] The lifting assembly includes a threaded rod fixedly connected to the edge of the bottom of the top plate, a threaded cylinder threadedly connected to the surface of the threaded rod, a gear A fixedly connected to the bottom of the threaded cylinder, a threaded rod penetrating the inner surface of the gear A, a gear B meshing with one side of the gear A, a transmission rod fixedly connected to the top of the gear B, a splined connection at the top of the transmission rod to the output end of the servo motor, and a base plate rotatably connected to the bottom of the gear A.

[0008] Preferably, a motor housing is fixedly connected to the surface of the servo motor, and a support plate is fixedly connected to the bottom of the motor housing.

[0009] Preferably, the bottom of the support plate is fixedly connected to support rods in a circular array, and the bottom of the support rods is fixedly connected to a base plate.

[0010] Preferably, a limiting block is fixedly connected to the bottom of the threaded rod, and a base plate overlaps the top of the limiting block.

[0011] Preferably, the surface of the base plate has a through hole, and a threaded rod is slidably connected to the surface of the through hole.

[0012] Preferably, the surface of the top plate is fixedly connected to a connecting plate in a ring array, the surface of the connecting plate is provided with threaded holes, and the surface of the threaded holes is threaded with connecting bolts.

[0013] The advantages of this utility model are:

[0014] 1. Through the structural design of the sliding groove and roller, the six-jaw chuck, after being driven by the external drive structure, helical rack and planar thread, during the process of the jaws retracting towards the center to clamp the workpiece, the rotation of the roller changes the friction between the jaws and the sliding groove from sliding friction to rolling friction, reducing the friction loss during the sliding process of the jaws, solving the problem of wear caused by long-term use at the sliding position of the jaws and the chuck, and improving the service life of the six-jaw chuck;

[0015] 2. Through the structural design of the lifting assembly, this utility model allows the user to connect the servo motor to an external power source and power it on. The transmission rod drives the B gear to rotate, and through meshing, it drives the A gear and the threaded cylinder to rotate synchronously. Through the screw principle, it drives the base plate and the bottom six-jaw chuck to move up and down as a whole, solving the problem of adjusting the chuck height to clamp workpieces of different heights and improving the adaptability of using this six-jaw chuck. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the roller structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the lifting component structure of this utility model.

[0021] In the diagram: 1. Top plate; 2. Lifting assembly; 201. Threaded rod; 202. Threaded cylinder; 203. Gear A; 204. Gear B; 205. Transmission rod; 206. Servo motor; 207. Base plate; 3. Chuck; 4. Slide groove; 5. Roller; 6. Claw; 7. Motor box; 8. Support plate; 9. Support rod; 10. Limiting block; 11. Connecting plate; 12. Connecting bolt. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 As shown, a six-jaw chuck structure with a guide rail type jaw transmission assembly includes a top plate 1, a lifting assembly 2 fixedly connected to the bottom edge of the top plate 1, a chuck 3 fixedly connected to the bottom of the lifting assembly 2, a sliding groove 4 opened inside the chuck 3, a roller 5 overlapping the surface of the sliding groove 4, and a jaw 6 overlapping one side of the roller 5.

[0024] The lifting assembly 2 includes a threaded rod 201 fixedly connected to the edge of the bottom of the top plate 1. A threaded cylinder 202 is threadedly connected to the surface of the threaded rod 201. A gear A 203 is fixedly connected to the bottom of the threaded cylinder 202. The threaded rod 201 is connected through the inner surface of the gear A 203. A gear B 204 is meshed with one side of the gear A 203. A transmission rod 205 is fixedly connected to the top of the gear B 204. The top of the transmission rod 205 is splinedly connected to the output end of the servo motor 206. A base plate 207 is rotatably connected to the bottom of the gear A 203.

[0025] During operation, after the servo motor 206 is powered on, the transmission rod 205 drives the B gear 204 to rotate, and through the meshing connection, drives the A gear 203 and the threaded cylinder 202 to rotate synchronously. This causes the threaded cylinder 202 to move up and down along the threaded rod 201 during rotation. Through the rotational connection between the A gear 203 and the base plate 207, the base plate 207 and the bottom six-jaw chuck move up and down as a whole, thereby clamping workpieces of different heights. At the same time, when the jaws 6 retract to clamp the workpiece, the rotation of the roller 5 changes the friction between the jaws 6 and the slide groove 4 from sliding friction to rolling friction, reducing the friction loss during the sliding process of the jaws 6.

[0026] Furthermore, a motor housing 7 is fixedly connected to the surface of the servo motor 206, and a support plate 8 is fixedly connected to the bottom of the motor housing 7.

[0027] During operation, the servo motor 206 inside the motor box 7 can be protected and supported by the motor box 7.

[0028] Furthermore, the bottom of the support plate 8 is fixedly connected to the support rods 9 in a circular array, and the bottom of the support rods 9 is fixedly connected to the base plate 207.

[0029] During operation, the support plate 8 and support rod 9 are used to provide support for the motor box 7.

[0030] Furthermore, a limiting block 10 is fixedly connected to the bottom of the threaded rod 201, and a base plate 207 overlaps the top of the limiting block 10;

[0031] During operation, the setting of the limiting block 10 prevents the base plate 207 from falling off the threaded rod 201 and damaging the equipment during the operation of the lifting assembly 2.

[0032] Furthermore, a through hole is provided on the surface of the base plate 207, and a threaded rod 201 is slidably connected to the surface of the through hole;

[0033] During operation, the through hole allows the threaded rod 201 to pass through the base plate 207, providing a larger lifting space.

[0034] Furthermore, the surface of the top plate 1 is fixedly connected with connecting plates 11 in a ring array. The surface of the connecting plates 11 is provided with threaded holes, and the surface of the threaded holes is threaded with connecting bolts 12.

[0035] During operation, the structure can be suspended and connected to the external structure by means of the connecting bolt 12, thereby clamping and lifting the workpiece.

[0036] Working principle: After the user connects the servo motor 206 to the power supply, the transmission rod 205 drives the B gear 204 to rotate, and through the meshing connection, drives the A gear 203 and the threaded cylinder 202 to rotate synchronously. During the rotation, the threaded cylinder 202 moves up and down along the threaded rod 201. Through the rotational connection between the A gear 203 and the base plate 207, the base plate 207 and the bottom six-jaw chuck move up and down to a suitable height. Then, the user uses the external drive structure to make the jaws 6 retract inward to clamp the workpiece. At this time, the roller 5 rotates, which changes the friction between the jaws 6 and the slide groove 4 from sliding friction to rolling friction, reducing friction loss.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A six-jaw chuck structure with a guide rail type jaw transmission assembly, comprising a top plate (1), characterized in that: A lifting assembly (2) is fixedly connected to the bottom edge of the top plate (1). A chuck (3) is fixedly connected to the bottom of the lifting assembly (2). A sliding groove (4) is provided inside the chuck (3). A roller (5) overlaps the surface of the sliding groove (4). A claw (6) overlaps on one side of the roller (5). The lifting assembly (2) includes a threaded rod (201) fixedly connected to the edge of the bottom of the top plate (1), a threaded cylinder (202) threadedly connected to the surface of the threaded rod (201), an A gear (203) fixedly connected to the bottom of the threaded cylinder (202), a threaded rod (201) connected through the inner surface of the A gear (203), a B gear (204) meshing with one side of the A gear (203), a transmission rod (205) fixedly connected to the top of the B gear (204), a splined connection at the top of the transmission rod (205) to the output end of the servo motor (206), and a base plate (207) rotatably connected to the bottom of the A gear (203).

2. The six-jaw chuck structure with guide rail type jaw transmission assembly according to claim 1, characterized in that: The servo motor (206) is fixedly connected to a motor box (7), and a support plate (8) is fixedly connected to the bottom of the motor box (7).

3. The six-jaw chuck structure with guide rail type jaw transmission assembly according to claim 2, characterized in that: The bottom of the support plate (8) is fixedly connected to the support rods (9) in a ring array, and the bottom of the support rods (9) is fixedly connected to the base plate (207).

4. The six-jaw chuck structure with guide rail type jaw transmission assembly according to claim 1, characterized in that: The bottom of the threaded rod (201) is fixedly connected to a limiting block (10), and the top of the limiting block (10) is overlapped with a base plate (207).

5. A six-jaw chuck structure with guide rail type jaw transmission assembly according to claim 4, characterized in that: The base plate (207) has a through hole on its surface, and a threaded rod (201) is slidably connected to the surface of the through hole.

6. The six-jaw chuck structure with guide rail type jaw transmission assembly according to claim 1, characterized in that: The top plate (1) has a connecting plate (11) fixedly connected in a ring array on its surface. The connecting plate (11) has a threaded hole on its surface, and a connecting bolt (12) is threaded onto the surface of the threaded hole.

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