CN-122007949-A - Clamping mechanism of rotating part

Abstract

The application discloses a clamping mechanism of a rotating part, which relates to the technical field of machine tool processing, wherein a main body part comprises an upper fixing plate, a lower fixing plate, a clamping plate, a brake disc, a belleville spring, an oil cylinder and the like, the upper fixing plate and the lower fixing plate are fixed on a base, the clamping plate can move up and down but can not perform relative rotation through a guide groove and the upper fixing plate, meanwhile, the clamping plate can move up and down through a hydraulic oil cylinder, and the clamped rotating part is connected with the brake disc through a flat key and can not perform relative rotation. When the mechanism is used, the working condition of the mechanism is in a clamping state in normal state, and the mechanism generates great positive pressure only through the disc spring, and the positive pressure is converted into friction force in the circumferential direction to further limit the rotation of the brake disc, namely the clamping state, so that the mechanism is realized without additional energy consumption, is environment-friendly and saves cost.

Inventors

• ZHANG HAO
• ZHOU SHOUSHENG
• LU BINGLIANG
• PENG ZHI
• ZHANG BO
• WANG JIUHUI
• LI NING
• ZHANG LILI
• ZHANG HAICHUN
• LU ZHUO
• DUAN HUIQIANG

Assignees

• 上海卓朴智能装备有限公司

Dates

Publication Date

20260512

Application Date

20260323

Claims (17)

1. 1. The utility model provides a clamping mechanism of rotating member, its characterized in that includes fixed plate (2), lower fixed plate (8), clamping plate (4) and brake disc (6), and fixed plate (2) and lower fixed plate (8) are fixed on the base, are equipped with belleville springs between fixed plate (2) and clamping plate (4).
2. 2. A rotary member clamping mechanism according to claim 1 wherein the brake disc is provided with a rotary member in the middle.
3. 3. Clamping mechanism for a rotating member according to claim 1, characterized in that the rotating member is fixedly connected to the brake disc (6) by means of a flat key (17).
4. 4. A clamping mechanism for a rotating member according to claim 1, wherein the rotating member extends out of the upper surface of the upper fixing plate (2) and is provided with a skeleton-type rubber oil seal (19), the skeleton-type rubber oil seal (19) is sleeved with an oil seal fixing sleeve (1), and the oil seal fixing sleeve (1) is fixed on the upper surface of the upper fixing plate (2).
5. 5. A clamping mechanism for a rotating member according to claim 1, comprising a hydraulic cylinder (7), said clamping plate (4) being movable up and down by means of the hydraulic cylinder (7).
6. 6. A clamping mechanism for a rotating member according to claim 1, wherein the overhanging side of the upper fixing plate (2) is provided with a pressing body (12), and the overhanging side of the lower fixing plate (8) is provided with a supporting body (15).
7. 7. A clamping mechanism for a rotating member according to claim 6, wherein an adjustment pad (13) is provided between the pressing body (12) and the supporting body (15).
8. 8. A clamping mechanism for a rotating member according to claim 1, wherein a floating mechanism is provided in the lower fixing plate (8), the floating mechanism supporting the brake disc (6) when the lower fixing plate (8) is separated from the brake disc (6).
9. 9. A clamping mechanism for a rotating component according to claim 8, characterized in that the floating mechanism comprises a compression spring, a guide rod (16) and a steel ball arranged in sequence from bottom to top.
10. 10. A clamping mechanism for a rotating member as recited in claim 9, wherein a set screw is provided below said compression spring, the set screw adjusting the amount of compression of the spring.
11. 11. A clamping mechanism for a rotating member according to claim 1, wherein said clamping plate (4) is in contact with said brake disc (6) through a first copper plate provided on a bottom surface thereof.
12. 12. A clamping mechanism for a rotating member according to claim 1, wherein said lower fixing plate (8) is in contact with said brake disc (6) through a second copper plate provided on the top surface thereof.
13. 13. A clamping mechanism for a rotating member according to claim 1, wherein the lower fixing plate (8) is provided with an annular groove with respect to the lower side of the clamping plate (4), and an elastic ring is provided in the annular groove.
14. 14. A clamping mechanism for a rotating member according to claim 13, wherein said elastic ring is a nylon fiber sleeve (18).
15. 15. A clamping mechanism for a rotating member according to claim 1, wherein the lower face of the upper fixing plate (8) is provided with a guide groove (20), and the clamping plate (4) is provided with a guide block fitted to the guide groove.
16. 16. A clamping mechanism for a rotating member according to claim 1, wherein a plurality of uniformly distributed locking screws are provided between the upper fixing plate (2) and the clamping plate (4).
17. 17. Clamping mechanism for a rotating part according to claim 1, characterized in that position detection switches are provided, which are provided between the upper fixing plate (2) and the clamping plate (4) and/or between the lower fixing plate (8) and the clamping plate (4).

Description

Clamping mechanism of rotating part Technical Field The invention relates to the technical field of machine tool machining, in particular to a clamping mechanism of a rotating part. Background The screw rod is widely applied to various machine tools as a rotating part. The ball screw cannot realize the self-locking function, so if the rotation of the ball screw is required to be limited, a band-type brake or a brake is usually added on a servo motor connected with the ball screw, but the braking torque of the band-type brake or the brake is limited, particularly when the ball screw is vertically used in a heavy machine tool and is subjected to a large load, the effective braking of the ball screw cannot be realized through the band-type brake or the brake of the servo motor, and the potential safety hazard is greatly caused. Disclosure of Invention The invention aims to provide a clamping mechanism for a rotating part. The invention solves the technical problem that in the prior art, the ball screw can not be effectively braked by a servo motor band-type brake or a brake when the ball screw is vertically used and the load is very large in a heavy machine tool. The clamping mechanism of the rotating component is fixed on the base by the upper fixing plate and the lower fixing plate, the clamping plate can move up and down but cannot perform relative rotation through the guide groove and the upper fixing plate, meanwhile, the clamping plate can move up and down through the hydraulic cylinder, and the clamped rotating component is connected with the brake disc through the flat key and cannot perform relative rotation. The cylinder rod is retracted, the acting force generated by the belleville springs between the upper fixing plate and the clamping plate at the moment enables the clamping plate to be in contact with the brake disc and generate great positive pressure, the positive pressure is converted into friction force in the circumferential direction, then the rotation of the brake disc is limited, namely, the clamping state is achieved, when the cylinder rod is extended, the cylinder rod overcomes the acting force of the belleville springs to enable the belleville springs to be further compressed, the brake disc is separated from the clamping plate, meanwhile, a return spring arranged on the lower fixing plate supports the brake disc through steel balls, the brake disc is separated from the lower fixing plate, and at the moment, the brake disc can freely rotate, namely, the brake disc is in a loosening state through flat keys and rotary parts. The clamping plate in the mechanism is contacted with the brake disc through the copper plate, the clamping plate and the brake disc are clamped by the acting force generated by the disc springs between the upper fixing plate and the clamping plate, the generated friction force limits the relative rotation of the brake disc, and the brake disc is connected with the rotating part through a pair of flat keys, so that the rotation, namely the clamping, of the rotating part is limited. The invention has the further technical improvement that the cylinder rod of the oil cylinder extends out to further compress the disc spring to separate the clamping plate from the brake disc, meanwhile, a compression spring is arranged between the lower fixed plate and the brake disc, the compression spring is reset to separate the brake disc from the lower fixed plate, and the guide rod and the steel balls are uniformly distributed between the compression spring and the brake disc, so that the steel balls can realize stable relative movement while floating the brake disc under the uniform stress of multiple points, and the free rotation of the rotating part can be realized. The invention has the further technical improvement that the clamping force requirements under different working conditions can be realized by changing the types and the number of the disc springs, and then the loosening force requirements required by the working condition change can be realized by correspondingly adjusting the pressure and the cylinder diameter of the oil cylinder. The invention further technically improves that the upper and lower fixing plates can only be fixed on one side and the other side is overhanging, and a pressing body, a supporting body and an adjusting pad are arranged on the overhanging side to make up the defect, the pressing body and the supporting body respectively limit the deformation of the upper and lower fixing plates caused by overlarge stress, and the adjusting pad can be effectively adjusted to the optimal position. The invention further technically improves that the loosening and clamping are both provided with position detection switches to realize closed-loop control, and are both provided with mechanical limit to achieve the purpose of double protection. The mechanism is simple and direct to assemble and adjust, the compressed quantity of the disc spring and the floating