CN215317234U

CN215317234U - Elastic clamping device for processing bearing inner ring

Info

Publication number: CN215317234U
Application number: CN202121314550.2U
Authority: CN
Inventors: 韩涛; 秦紫东; 孙嘉晨; 陈超; 刘灵歌; 金尚元
Original assignee: Zhengzhou Institute of Finance and Economics
Current assignee: Zhengzhou Institute of Finance and Economics
Priority date: 2021-06-14
Filing date: 2021-06-14
Publication date: 2021-12-28
Anticipated expiration: 2031-06-14

Abstract

The utility model relates to the technical field of bearing machining, in particular to an elastic clamping device for machining a bearing inner ring. The elastic clamping device for processing the bearing inner ring comprises an elastic clamping mechanism and a driving assembly. The elastic clamping mechanism comprises a clamping ring and a plurality of groups of elastic assemblies arranged along the circumferential direction of the clamping ring, the driving assembly comprises a connecting ring, a hydraulic oil cavity is arranged in the connecting ring, the connecting ring is arranged at the center of the clamping ring, one end of each group of elastic assemblies is communicated with the hydraulic oil cavity, and the hydraulic oil in the hydraulic oil cavity drives the elastic assemblies to do linear motion along the radial direction of the connecting ring so as to abut against the inner wall of the inner ring of the bearing. The elastic assembly is evenly abutted against the inner ring of the bearing, so that the roundness of the inner ring of the bearing is improved, the elastic clamping device for processing the inner ring of the bearing is simple in structure and flexible to operate, and the yield of the inner ring of the bearing is improved, so that the production cost of the inner ring of the bearing is reduced.

Description

Elastic clamping device for processing bearing inner ring

Technical Field

The utility model relates to the technical field of bearing machining, in particular to an elastic clamping device for machining a bearing inner ring.

Background

The bearing ring channel is used as a key working surface of the bearing, and has great influence on the performance of the bearing and the electric spindle. When a bearing workpiece is machined, the problems of poor roundness of a channel of a bearing inner ring and deformation of the bearing inner ring are caused due to the fact that the clamp force is not uniform after the tool is clamped due to the design problem of the clamp. The existing processing technology of the bearing inner ring has high requirement on the roundness of the bearing inner ring, the error of the inner ring can directly reflect a channel error, simultaneously, due to the positioning of double rollers, roller indentation appears on the surface of the bearing inner ring, in order to eliminate the roller indentation of the process, an outer ring grinding technology is needed, the processing cycle is long for the whole bearing processing, the efficiency is low, and the cost of the finished bearing is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the problems in the prior art, the utility model provides the elastic clamping device for processing the bearing inner ring, which has the advantages of simple structure and flexible operation, and reduces the production cost of the bearing inner ring.

(II) technical scheme

In order to achieve the purpose, the utility model adopts the main technical scheme that:

the utility model provides an elastic clamping device for processing a bearing inner ring, which comprises an elastic clamping mechanism and a connecting ring, wherein the elastic clamping mechanism comprises a clamping head and a clamping head; the elastic clamping mechanism comprises a clamping ring and a plurality of groups of elastic components arranged along the circumferential direction of the clamping ring; a hydraulic oil cavity is formed in the connecting ring, the connecting ring is arranged at the center of the clamping ring, one end of each elastic assembly is communicated with the hydraulic oil cavity, and hydraulic oil in the hydraulic oil cavity drives the elastic assemblies to do linear motion along the radial direction of the connecting ring so as to abut against the inner wall of the bearing inner ring.

Preferably, the elastic component comprises a telescopic rod and a driving block, the driving block is provided with an oil inlet, the oil inlet is communicated with the connecting ring, and an accommodating cavity is formed in the driving block; one end of the telescopic rod extends into the containing cavity, hydraulic oil in the hydraulic oil cavity enters the containing cavity through the oil inlet to drive the telescopic rod to do linear motion along the length direction of the containing cavity so as to abut against the inner wall of the bearing inner ring.

Preferably, the elastic component further comprises a spring, and the spring is sleeved on the telescopic rod.

Preferably, the telescopic rod is provided with a positioning ring, one end of the spring is abutted to the positioning ring, and the other end of the spring is abutted to the inner wall of the clamping ring.

Preferably, the elastic clamping mechanism is provided with 8 groups of elastic components, and the included angles of two adjacent groups of elastic components are the same.

Preferably, the clamping device further comprises a clamping seat, and a through hole is formed in the center of the clamping seat; the clamping seat comprises a positioning disc and a handle connected with the positioning disc; the positioning disc and the handle are arranged along the same axis.

Preferably, the distal end of the handle is of a conical configuration.

Preferably, the hydraulic oil enters the oil conveying hole of the hydraulic oil cavity through the through hole of the clamping seat.

(III) advantageous effects

The utility model has the beneficial effects that:

the utility model provides an elastic clamping device for processing a bearing inner ring, which is characterized in that a clamping ring and a plurality of groups of elastic components arranged along the circumferential direction of the clamping ring are arranged, one end of each group of elastic components is communicated with a hydraulic oil cavity, hydraulic oil in the hydraulic oil cavity drives the elastic components to do linear motion to abut against the inner wall of the bearing inner ring, and the elastic components are uniformly abutted against the bearing inner ring, so that the roundness of the bearing inner ring is improved.

Drawings

FIG. 1 is a schematic structural diagram of an elastic clamping device for processing a bearing inner ring provided by the embodiment;

FIG. 2 is a schematic view of the cooperating structure of the elastic clamping mechanism and the connecting ring in FIG. 1;

FIG. 3 is a schematic structural view of the clamping base shown in FIG. 1;

FIG. 4 is a schematic view of the structure of the elastomeric assembly of FIG. 1 (springs not shown);

FIG. 5 is a schematic cross-sectional view of FIG. 4;

fig. 6 is a schematic view of the connection ring of fig. 1.

[ description of reference ]

1: an elastic clamping mechanism; 11: a clamp ring; 12: an elastic component; 121: a telescopic rod; 1211: a positioning ring; 1212: the telescopic rod body; 1213: a connecting member; 122: a drive block; 1221: an oil inlet; 1222: an accommodating chamber; 123: a spring;

2: a connecting ring; 21: an oil transfer hole;

3: a clamping seat; 31: positioning a plate; 32: a handle;

4: and (4) bearing inner rings.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment provides an elastic clamping device for processing a bearing inner ring, which includes an elastic clamping mechanism 1, a connecting ring 2 and a clamping seat 3. As shown in fig. 2, the elastic clamping mechanism 1 includes a clamping ring 11 and a plurality of sets of elastic components 12 arranged at equal intervals along the circumferential direction of the clamping ring 11, a hydraulic oil chamber (not shown) is arranged in the connecting ring 2, the connecting ring 2 is arranged at the center of the clamping ring 11 and coaxially arranged, one end of each set of elastic components 12 is communicated with the hydraulic oil chamber, the other end of each elastic component 12 passes through the clamping ring 11 and is used for abutting against the inner wall of the bearing inner ring 4, wherein hydraulic oil in the hydraulic oil chamber drives the elastic components 12 to make linear motion along the radial direction of the connecting ring 2 so as to abut against the inner wall of the bearing inner ring 4. In this embodiment, the elastic clamping mechanism 1 has 8 sets of elastic components 12, and the included angles between two adjacent sets of elastic components 12 are the same.

As shown in FIG. 3, a through hole is provided at the center of the holder 3, the holder 3 includes a positioning plate 31 and a handle 32 connected to the positioning plate 31, and the positioning plate 31 and the handle 32 are disposed along the same axis. As shown in FIG. 6, the hydraulic oil is communicated with the oil transfer hole 21 on the hydraulic oil chamber through the through hole of the holder 3 to supply the hydraulic oil to the hydraulic oil chamber. Wherein, the end of handle 32 is conical structure, can match the degree with the lathe height and can with lathe lug connection, need not improve the lathe once more just can be directly connected with the lathe to elasticity clamping device's with low costs, convenient operation promote work efficiency.

The embodiment provides an elasticity clamping device for bearing inner race processing, owing to set up grip ring 11 and the elastic component 12 that the multiunit arranged along grip ring 11 circumference, the one end and the hydraulic pressure oil pocket intercommunication of multiunit elastic component 12, hydraulic oil drive elastic component 12 in the hydraulic pressure oil pocket is linear motion and comes the inner wall of butt bearing inner race 4, because the even butt of elastic component 12 is on bearing inner race 4, the circularity of bearing inner race 4 has been improved, and this elasticity clamping device for bearing inner race processing simple structure, the flexible operation, thereby the yield that has improved bearing inner race 4 has reduced bearing inner race 4's manufacturing cost.

As shown in fig. 4-5, the elastic component 12 includes a telescopic rod 121 and a driving block 122, the driving block 122 is provided with an oil inlet 1221, the oil inlet 1221 is communicated with the connecting ring 2, an accommodating cavity 1222 is provided in the driving block 122, one end of the telescopic rod 121 passes through the clamping ring 11 for abutting against the inner wall of the bearing inner ring 4, the other end of the telescopic rod 121 extends into the accommodating cavity 1222, and when the hydraulic oil introduced into the accommodating cavity 1222 is changed, the telescopic rod 121 reciprocates along the length direction of the accommodating cavity 1222. In order to increase the pressing force, one end of the telescopic rod 121 close to the inner wall of the bearing inner ring 4 is designed to be round. In order to facilitate the installation of the telescopic rod 121 and the driving block 122, the telescopic rod 121 includes a connecting member 1213, one end of the connecting member 1213 extends into the driving block 122 and is slidably connected to the driving block 122, and the other end of the connecting member 1213 is connected to the telescopic rod body 1212.

When the hydraulic oil in the receiving cavity 1222 is reduced, the elastic component 12 further includes a spring 123, and the spring 123 is sleeved on the telescopic rod 121 in order to restore the telescopic rod 121. In order to facilitate the positioning of the spring 123, a positioning ring 1211 is disposed on the telescopic rod 121, one end of the spring 123 abuts against the positioning ring 1211, and the other end of the spring 123 abuts against the inner wall of the clamping ring 11. After the bearing inner ring 4 is machined, the hydraulic oil is stopped being conveyed, due to the reset action of the spring 123, the telescopic rod 121 retracts to the initial position of the accommodating cavity 1222, the clamping force of the bearing inner ring 4 is lost, and the bearing inner ring 4 can be taken down.

In this embodiment, the telescopic rod 121 is combined with the surface of the bearing inner ring 4 to ensure circumferential positioning of the bearing inner ring 4, the end surface of the bearing inner ring 4 is attached to the positioning disc 31 to ensure axial positioning of the bearing inner ring 4, hydraulic oil is used to push the telescopic rod 121 to clamp the bearing inner ring 4, clamping force is uniformly distributed on the eight telescopic rods 121, and the roundness of the channel of the bearing inner ring 4 is improved.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "communicating," "fixed," and the like are to be construed broadly, e.g., as meaning in fixed communication, in removable communication, or as an integral part; either mechanically or electrically; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims

1. An elastic clamping device for processing a bearing inner ring is characterized by comprising an elastic clamping mechanism (1) and a connecting ring (2);

the elastic clamping mechanism (1) comprises a clamping ring (11) and a plurality of groups of elastic components (12) which are arranged along the circumferential direction of the clamping ring (11);

be equipped with the hydraulic oil chamber in go-between (2), go-between (2) set up in the center department of grip ring (11), the multiunit the one end of elastic component (12) with the hydraulic oil chamber intercommunication, the hydraulic oil drive in the hydraulic oil chamber elastic component (12) are followed the radial linear motion of go-between (2) is with the inner wall of butt bearing inner circle (4).

2. The elastic clamping device for processing the inner ring of the bearing is characterized in that the elastic assembly (12) comprises a telescopic rod (121) and a driving block (122), the driving block (122) is provided with an oil inlet (1221), the oil inlet (1221) is communicated with the connecting ring (2), and an accommodating cavity (1222) is arranged in the driving block (122);

one end of the telescopic rod (121) extends into the accommodating cavity (1222), and hydraulic oil in the hydraulic oil cavity enters the accommodating cavity (1222) through the oil inlet (1221) to drive the telescopic rod (121) to do linear motion along the length direction of the accommodating cavity (1222) so as to abut against the inner wall of the bearing inner ring (4).

3. The elastic clamping device for processing the inner ring of the bearing as claimed in claim 2, wherein the elastic component (12) further comprises a spring (123), and the spring (123) is sleeved on the telescopic rod (121).

4. The elastic clamping device for machining the inner ring of the bearing as claimed in claim 3, wherein the telescopic rod (121) is provided with a positioning ring (1211), one end of the spring (123) abuts against the positioning ring (1211), and the other end of the spring (123) abuts against the inner wall of the clamping ring (11).

5. The elastic clamping device for processing the bearing inner ring is characterized in that the elastic clamping mechanism (1) is provided with 8 groups of elastic components (12), and the included angles of two adjacent groups of elastic components (12) are the same.

6. The elastic clamping device for processing the bearing inner ring is characterized by further comprising a clamping seat (3), wherein a through hole is formed in the center of the clamping seat (3);

the clamping seat (3) comprises a positioning disc (31) and a handle (32) connected with the positioning disc (31);

the positioning disc (31) and the handle (32) are arranged along the same axis.

7. A resilient clamping means for bearing inner race machining according to claim 6, characterized in that the handle (32) terminates with a conical configuration.

8. The elastic clamping device for machining a bearing inner ring as claimed in claim 7, characterized in that the hydraulic oil enters the oil delivery hole (21) of the hydraulic oil chamber through the through hole of the clamping seat (3).