CN211331381U

CN211331381U - Bearing ring clamp

Info

Publication number: CN211331381U
Application number: CN201922252826.8U
Authority: CN
Inventors: 刘占伟; 王雪磊
Original assignee: Hangzhou Dex Machinery Co ltd
Current assignee: Hangzhou Dex Machinery Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-25
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a bearing ring anchor clamps, including chuck body, clamping jaw seat and clamping jaw, the clamping jaw seat is fixed on chuck body upper surface. A clamping jaw is fixed on each clamping jaw seat, the clamping jaw is fixed on the clamping jaw seat through a pin shaft axially arranged on the chuck body, and the clamping jaw can rotate around the pin shaft. Each clamping jaw comprises a clamping surface, and the clamping surfaces of the clamping jaws are distributed on the outer surface of the same cylindrical cavity. The jaws can be connected by a spring. When the bearing ring stress is transmitted to the clamping jaw, the clamping jaw and the spring can transmit and release the stress, so that the clamping jaw is prevented from being damaged, and on the other hand, the bearing ring stress is released to reduce the deformation of the bearing ring.

Description

Bearing ring clamp

Technical Field

The utility model relates to an anchor clamps technical field, concretely relates to be used for the anchor clamps of fixed bearing lasso in order to carry out turning, polishing in the bearing ring processing.

Background

The rolling bearing mainly comprises an outer ring, an inner ring, a rolling body and a retainer. The inner ring and the outer ring of the rolling bearing are collectively called as a bearing ring, the inner ring and the outer ring of the bearing ring need to be turned in the production process of the bearing ring, and the bearing ring is generally clamped by a three-jaw chuck in the process. The bearing ring is difficult to apply force to the bearing ring in turning and other operations, so that the bearing ring is deformed, particularly for a bearing ring workpiece with a large diameter and a thin wall, the contact area between the clamping jaw and the bearing ring is small, the clamping force is difficult to adjust, and the bearing ring is easy to deform elliptically in the machining process. Even the clamping jaws of the clamp deform in the machining process, and the circle center position of the bearing ring is easy to deviate from the rotating axis center as long as one clamping jaw of the three-jaw chuck deforms, deviates or is worn slightly, so that the ovality of the machined inner ring of the bearing ring can be increased.

In summary, in order to solve the above problems, the fixing points of the clamping portion of the fixture and the bearing ring need to be increased and reasonably distributed; meanwhile, the excessive stress of the bearing ring in the processing process is released as much as possible. Patent document No. CN208437696U discloses a middle bearing ring clamp, which is provided with a plurality of ejector pins abutting against a bearing ring, and fixed points are added, so that the concentricity of the bearing ring and the clamp is higher when the clamp clamps the bearing ring, thereby reducing the ovality of the clamped bearing ring after processing.

SUMMERY OF THE UTILITY MODEL

For overcoming the deficiency among the prior art, the utility model provides a but transmission and release bearing ring's atress reduces the anchor clamps of elliptical deformation in the bearing ring course of working.

The technical scheme of the utility model is that: a bearing ring clamp comprises a chuck body, a clamping jaw seat and a clamping jaw, wherein the clamping jaw seat is fixed on the upper surface of the chuck body. A clamping jaw is fixed on each clamping jaw seat, the clamping jaw is fixed on the clamping jaw seat through a pin shaft axially arranged on the chuck body, and the clamping jaw can rotate around the pin shaft. Each clamping jaw comprises a clamping surface, and the clamping surfaces of the clamping jaws are distributed on the outer surface of the same cylindrical cavity. When the clamp is manufactured, the radian and the installation position of the clamping surface of the clamping jaw are set according to the size of the bearing ring, and when the bearing ring is machined, the clamping surface is tightly attached and is jointly abutted against the outer surface of the bearing ring to fix the bearing ring. When the bearing ring is locally subjected to too high a pressure, the pressure is transmitted to the clamping jaw. The clamping jaw of the structure can rotate around the pin shaft, when the clamping jaw is under large pressure, the clamping jaw can release the pressure, and the deformation of the bearing ring due to stress is reduced.

Preferably, the clamping jaw is a cylinder, a notch is arranged on the inner side of the upper part of the cylinder, the inner wall of the upper part of the cylinder forms a clamping surface, the lower part of the cylinder is a base, the outer end of the clamping jaw seat is connected with an upwards extending supporting plate, and the inner surface of the supporting plate is tangent to the outer surface of the clamping jaw. The clamping jaw is simple in structure, convenient to machine and install, and more stable due to the fact that the clamping jaw is provided with the abutting plate tangent to the clamping jaw.

Preferably, the jaws are supported between them by a resilient element. The stress of the clamping jaw can be transmitted through the elastic element, and the elastic element can offset the stress through the structural deformation of the elastic element, so that the deformation of the bearing ring and the clamping jaw is avoided.

The elastic element is preferably a spring, wherein one preferable structure is as follows: the springs are connected between the side walls of the adjacent clamping jaws, and a cylindrical cavity enclosed by the clamping surfaces is arranged in the cavity enclosed by the springs and the clamping jaws. The clamping jaws are connected into a whole through the spring, so that the transmission and offset of stress are facilitated, the bearing ring is not affected by the spring during installation, and the installation is convenient.

Another preferred structure is: and springs are connected between the adjacent bases. Because the base is arranged below the clamping surface, and the spring connected with the base is also arranged below the clamping surface, the installation of the bearing ring can not be influenced.

Preferably, the clamping surface is fixedly connected with an elastic gasket. The clamping is more stable, and the elastic gasket can offset part of the stress of the bearing ring through deformation.

Preferably, there are 6 jaw seats evenly distributed on the upper surface of the chuck body. Another preferred structure is: the clamping jaw seat has 3, evenly distributed at chuck body upper surface.

The utility model has the advantages that:

(1) the clamping surface of the clamping jaw is arc-shaped, the cavity formed by the clamping jaw is used for installing the bearing ring to be processed, the arc-shaped surface is attached to the bearing ring tightly, the contact surface is large, and the clamping jaw is more stable.

(2) The jack catch can rotate around the axial round pin axle of chuck main part, and when the bearing ring atress was transmitted the clamping jaw, should rotate and can release the atress, avoids the jack catch damage on the one hand, and on the other hand, the bearing ring atress is released, reduces its deformation.

(3) Set up the spring between the jack catch, the jack catch atress can be in the transmission of great scope, and the spring itself can release partly atress, and overall structure is more stable, guarantees the concentricity of bearing ring and anchor clamps, further reduces the ovality that the course of working caused the bearing ring.

Drawings

FIG. 1: the structure schematic diagram of the bearing ring clamp of the utility model is shown;

FIG. 2: the structure schematic diagram of another embodiment of the bearing ring clamp of the utility model;

FIG. 3: the structure schematic diagram of another embodiment of the bearing ring clamp of the utility model;

FIG. 4: the structure of the clamping jaw in the utility model is shown schematically;

in the figure: 1-a chuck body; 2-clamping jaw seat; 21-a resisting plate; 3-clamping jaw; 31-a base; 32-a clamping surface; 4-a pin shaft; 5-a spring.

Detailed Description

In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the following description of the present invention with reference to the accompanying drawings is further provided, but not limited in any way, and all the modifications or improvements made based on the teaching of the present invention belong to the protection scope of the present invention.

Example one

As shown in fig. 1, a bearing ring fixture comprises a cylindrical chuck body 1, wherein 3 radial grooves are arranged on the upper surface of the chuck body 1, and the included angle between the grooves is 120 °. A clamping jaw seat 2 is installed in each groove, the clamping jaw seat 2 is L-shaped, a transverse wall is fixed in each groove, and a vertical wall points to the upper side of the chuck body 1. A clamping jaw 3 is fixed on each clamping jaw seat 2. As shown in fig. 3, the clamping jaw 3 is a cylinder, a notch is lathed on the inner side of the upper part of the cylinder, the inner wall of the upper part is arc-shaped, and the size and the shape of the bearing ring to be processed are designed according to the notch lathing, so that the arc-shaped inner wall of the upper part can be attached to the outer surface of the bearing ring, and all the arc-shaped inner walls are arranged concentrically. The arcuate inner wall forms a clamping surface 32 to which a rubber gasket may be adhered as desired. The lower part of the jaw is a base 31. The inner surface of the vertical wall of the clamping jaw seat 2 is tangent to the outer surface of the clamping jaw 3, and the vertical wall forms a resisting plate 21 of the clamping jaw 3. A through hole is arranged between the upper surface of the upper part of the clamping jaw 3 and the lower surface of the lower part of the clamping jaw 3, and the pin shaft 4 penetrates through the through hole to fix the clamping jaw 3 on the clamping jaw seat 2.

And (3) mounting the bearing ring in a cavity surrounded by the clamping surface 32 of the clamping jaw 3, further processing such as turning, wherein in the processing of the bearing ring of the same type, the average value of the ovality of the bearing ring obtained by using the clamp with the structure is 2-3 wires, and the average value of the ovality of the bearing ring produced by using the traditional three-jaw chuck is 5-6 wires before the clamp with the structure is not replaced.

Example two

As shown in fig. 2, a further improvement is made on the basis of the structure of the clamping apparatus described in the first embodiment, and springs 5 are connected between the side walls of the adjacent clamping jaws 3, that is, the ends of the springs 5 are fixed on the side surface of the cylinder outside the clamping surface 32, and the cylindrical cavity enclosed by the clamping surface 32 is inside the cavity enclosed by the springs 5 and the clamping jaws 3. The installation of the bearing ring is not influenced.

EXAMPLE III

As shown in fig. 3, a further improvement is made on the basis of the structure of the clamp according to the first embodiment, and springs 5 are connected between adjacent bases 31. The end of the spring 5 is attached to the side of the base 31. Since the base 31 is below the clamping surface 32 and the spring 5 connecting the base is also below the clamping surface 32, the mounting of the bearing ring is not affected.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A bearing ring clamp comprises a chuck body (1), a clamping jaw seat (2) and a clamping jaw (3), wherein the clamping jaw seat (2) is fixed on the upper surface of the chuck body (1); all fix one on every clamping jaw seat (2) clamping jaw (3), its characterized in that: the clamping jaw (3) is fixed on the clamping jaw seat (2) through a pin shaft (4) axially arranged on the chuck body (1), and the clamping jaw (3) can rotate around the pin shaft (4); each clamping jaw (3) comprises a clamping surface (32), and the clamping surfaces (32) are distributed on the outer surface of the same cylindrical cavity.

2. The bearing ring fixture of claim 1, wherein: the clamping jaw (3) is a cylinder, a gap is arranged on the inner side of the upper part of the cylinder, the inner wall of the upper part of the cylinder forms a clamping surface (32), and the lower part of the cylinder is a base (31); the outer end of the clamping jaw seat (2) is connected with a supporting plate (21) extending upwards, and the inner surface of the supporting plate (21) is tangent to the outer surface of the clamping jaw (3).

3. The bearing ring fixture of claim 2, wherein: elastic elements are supported between the clamping jaws (3).

4. A bearing ring clamp according to claim 3, wherein: all be connected with spring (5) between the adjacent clamping jaw (3) lateral wall, the cylindrical cavity that presss from both sides tight face (32) and enclose is in spring (5) with inside the cavity of clamping jaw (3) besieged city.

5. A bearing ring clamp according to claim 3, wherein: and springs (5) are connected between the adjacent bases (31).

6. A bearing ring holder according to any one of claims 1 to 5, wherein: an elastic gasket is fixedly connected to the clamping surface (32).

7. A bearing ring holder according to any one of claims 1 to 5, wherein: the number of the clamping jaw seats (2) is 6, and the clamping jaw seats are uniformly distributed on the upper surface of the chuck body (1).

8. A bearing ring holder according to any one of claims 1 to 5, wherein: the number of the clamping jaw seats (2) is 3, and the upper surfaces of the chuck bodies (1) are uniformly distributed.