CN113798817A

CN113798817A - Bearing spinning assembly device

Info

Publication number: CN113798817A
Application number: CN202111111345.0A
Authority: CN
Inventors: 周明; 陈晓忠; 陈海兴
Original assignee: Shanghai Zhenhua Bearing Works Co ltd
Current assignee: Shanghai Zhenhua Bearing Works Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2021-12-17

Abstract

The invention relates to a bearing spinning assembly device, comprising a rotation center positioning shaft, a roller R tooling positioning sleeve, a roller positioning seat, a mandrel, two rollers, and a clamp. Two rollers are installed on the bearing to form a double-roller symmetrical spinning mechanism. The upper end of the roller positioning seat is connected to the rotation center positioning shaft through the roller R tooling and positioning sleeve. The double-roller symmetrical spinning mechanism is placed below the fixture for positioning and clamping the workpiece. . The bearing spinning assembly device of the present invention adopts double roller symmetrical spinning, the opening surface of the workpiece of the workpiece shrinks symmetrically during the hemming process, and the product chamfering size is consistent; The compression amount of the elastic parts inside the bearing is uniform, and the internal preload of the mass-produced bearing is consistent.

Description

Bearing spinning assembly device

Technical Field

The invention relates to a spinning device, in particular to a bearing spinning assembly device.

Background

The semi-rigid bearing for the automobile steering system is provided with one or two elastic pieces used for bearing internal pre-tightening, the bearing rigidity is controlled under the pre-tightening force required by the operation of a rolling body in the bearing, and the pre-tightening force of the rolling body in the bearing depends on the compression amount of the elastic body; the uniformity of the pretightening force of each rolling body in the bearing depends on the uniformity of the edge rolling.

Generally, the edge rolling adopts a mode of twice or repeated spinning, repeated positioning is carried out, the chamfer angle after edge rolling has large size and large end surface parallelism difference, the compression amount of an elastic part in a bearing is not uniform, the pre-tightening force consistency of a rolling body in a product is poor, the excircle radial rigidity of a single product is not uniform, and the product is unqualified. By means of necking and flattening of the die, the interior of the bearing is easy to be injured and difficult to control, and the product yield is low.

Disclosure of Invention

The invention aims to overcome the defects of the existing edge rolling and closing technology, and provides a bearing spinning assembly device which is simple in structure, simple to manufacture and use, convenient to adjust and good in tool universality, and universal tools for various types of products can be realized by replacing rollers; the consistency of the produced workpieces is good, and the stability of the product can be improved; high production efficiency, is beneficial to reducing the product cost and is beneficial to large-scale production.

In order to solve the technical problem, the technical scheme of the invention is realized as follows: the utility model provides a bearing spinning assembly quality, includes a rotation center location axle, gyro wheel R frock position sleeve, a gyro wheel positioning seat, a dabber, two gyro wheels, an anchor clamps, through two roller train two gyro wheel symmetry spinning mechanisms of dabber and bearing installation in the gyro wheel positioning seat, gyro wheel positioning seat upper end is connected with rotation center location axle through gyro wheel R frock position sleeve, place below the two gyro wheel symmetry spinning mechanisms and be used for the anchor clamps of the tight work piece of location clamp.

Furthermore, the two rollers are symmetrically arranged on the mandrel through a bearing respectively, the middle of each roller is separated by two bearings, an adjusting gasket is arranged between the two bearings, and an adjusting gasket is arranged between the end face of the bearing in each roller and the inner side face of the roller positioning seat.

Further, an inner circular arc for chamfering the edge rolling end face of the workpiece housing is arranged on the inner side of the roller.

Further, the radius of the inner circular arc of the roller is consistent with the radius of the chamfer of the edge rolling end face of the workpiece housing after edge rolling.

Further, the mandrel is axially locked and fixed by a nut and a washer after being installed.

Further, a clamp backer is arranged on one side of the clamp, and a clamp clamping push plate is arranged on the other side of the clamp.

Further, a top plate is arranged below the workpiece in the clamp, and the lower end of the top plate penetrates through the clamp to be connected with the pushing mechanism.

Further, the roller R positioning sleeve is connected with a motor, driven by the motor, transmitted to the roller positioning seat and then transmitted to the mandrel to drive the roller to rotate around the rotating center.

Furthermore, the double-roller symmetrical spinning mechanism is connected with the roller up-and-down moving mechanism and used for driving the rollers to move downwards to spin the workpiece.

Further, the bearing spinning assembly device is also connected with a feeding device and used for realizing automatic production.

The invention has the beneficial effects that:

the bearing spinning assembly device adopts double rollers to carry out symmetrical spinning, the opening surface of the housing is symmetrically contracted and symmetrically compressed in the edge rolling process, and the edge rolling is carried out until the finished product state is reached. The inner circular arc R of the roller determines that chamfers R of the edge rolling end surfaces of the workpiece housing after edge rolling are consistent in size, the housing is symmetrically deformed in the symmetrical edge rolling process, and product chamfers are consistent in size; the parallel difference fluctuation is small, the consistency is good, and the pretightening force variation range is small. The rigidity of the product is within an allowable range, and the consistency of the batch product is good. The problem that the compression amount of an elastic part in the bearing is uniform and the consistency of the internal pretightening force of the bearing of a batch product is good is effectively solved.

Drawings

FIG. 1 is a schematic illustration of a workpiece prior to spinning;

FIG. 2 is a schematic view of a workpiece after spinning;

fig. 3 is a schematic structural diagram of the bearing spinning assembly device of the invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and examples:

as shown in fig. 3, the bearing spinning assembly device of the present invention includes a rotation center positioning shaft 1, a roller R fixture positioning sleeve 2, a roller positioning seat 3, a mandrel 4, two rollers 5, four bearings 6, three spacers 8, a nut 7, a washer 9, a clamp 10, a top plate 11, a clamp backer 12, and a clamp clamping push plate 13. The upper end of the roller positioning seat 3 is connected with the rotation center positioning shaft 1 through a roller R tool positioning sleeve 2, two rollers 5 are installed in the roller positioning seat 3 through a mandrel 4 and a bearing 6 to form a double-roller symmetrical spinning mechanism, wherein the two rollers 5 are respectively installed on the mandrel 4 through the bearing 6 symmetrically, the middle of the two rollers are separated by the two bearings 6, an adjusting gasket 8 is arranged in the middle of the two bearings 6, and an adjusting gasket 8 is arranged between the end face of the bearing 4 in the roller 5 and the inner side face of the roller positioning seat 3. After being installed, the mandrel 4 is axially locked and fixed by a nut 7 and a washer 9.

A clamp 10 for positioning and clamping a workpiece is arranged below the double-roller symmetrical spinning mechanism. A top plate 11 is arranged below a workpiece 14 in the clamp 10, one side of the clamp 10 is provided with a clamp backer 12, and the other side of the clamp 10 is provided with a clamp clamping push plate 13. The lower end of the top plate 11 passes through the clamp 10 and is connected with the pushing mechanism. An inner circular arc R for chamfering the edge rolling end face of the workpiece housing is arranged on the inner side of the roller 5. The radius of the inner circular arc R of the roller is consistent with the radius of the chamfer of the edge-rolled end face of the workpiece housing after edge rolling.

The workpiece 14 is placed in the clamp 10, and the workpiece 14 is clamped by the clamp clamping push plate 13; the roller 5 rotates and presses downwards, the roller 5 is contacted with the end face of the housing of the workpiece 14 to form spinning edge rolling, and spinning is finished.

During the working process, the bearing to be rolled (shown in figure 1) is sent into a clamp, the clamp is pushed tightly by a clamp clamping push plate, and a reaction force is generated by a clamp backer to clamp a workpiece. The roller R positioning sleeve is driven by a motor on the edge rolling equipment, is transmitted to the roller positioning shaft and then is transmitted to the mandrel to drive the roller to rotate around the center. And the roller moves downwards to contact the workpiece to generate spinning, and the spinning continues to be performed downwards until the spinning reaches the required height size of the workpiece, and the spinning is finished. The roller is withdrawn, the clamp is released, the top plate fixes the bearing out of the clamp and then discharges, the bearing after spinning (shown in figure 2) is moved out of the clamp, and a binding cycle is finished.

The invention ensures that the pre-tightening force increasing process of each part in the bearing is stable and uniform by symmetrically edging, gradually and uniformly deforming and closing up and stably and uniformly compressing the end surface in the spinning process, and the end surface of the bearing after edging is flat, has good parallelism and good product rigidity consistency. Because the bearing edge rolling end face chamfer has consistency with the inner circular arc R of the roller, the chamfer consistency is good, the chamfer is smoothly connected with the outer circle, a good assembly guide is provided for a customer to install the bearing, the assembly performance is good, and the production efficiency is high. If increase material feeding unit outside this structure, realize automated production easily, improve product quality's stability, improve production efficiency.

Claims

1. A bearing spinning assembly device is characterized in that: comprising a rotation center positioning shaft, a roller R tooling positioning sleeve, a roller positioning seat, a mandrel, two rollers, a clamp, and the roller positioning seat passes through the The mandrel and the bearing are installed with two rollers to form a double-roller symmetrical spinning mechanism. The upper end of the roller positioning seat is connected to the rotation center positioning shaft through the roller R tooling and positioning sleeve. The double-roller symmetrical spinning mechanism is placed under it for positioning and clamping. Fixtures for workpieces.

2 . The bearing spinning assembly device according to claim 1 , wherein the two rollers are respectively mounted on the mandrel symmetrically through a bearing, separated by two bearings in the middle, and there is an adjustment between the two bearings. 3 . A gasket is provided between the bearing end face in the roller and the inner side surface of the roller positioning seat.

3 . The bearing spinning assembly device according to claim 1 , wherein the inner side of the roller is provided with an inner arc for chamfering the end face of the workpiece cover rolling. 4 .

4 . The bearing spinning assembly device according to claim 3 , wherein the radius of the inner arc of the roller is the same as the chamfering radius of the hemming end face of the workpiece cover after hemming. 5 .

5 . The bearing spinning assembly device according to claim 1 , wherein the mandrel is axially locked and fixed with a nut and a washer after being installed. 6 .

6 . The bearing spinning assembly device according to claim 1 , characterized in that: one side of the fixture is provided with a fixture backer, and the other side is provided with a fixture clamping push plate. 7 .

7 . The bearing spinning assembly device according to claim 1 , wherein a top plate is installed under the workpiece in the fixture, and the lower end of the top plate is connected to the push mechanism through the fixture. 8 .

8 . The bearing spinning assembly device according to claim 1 , wherein the roller R locating sleeve is connected to a motor, and the roller R locating sleeve is driven by the motor, transmitted to the roller locating seat, and then transmitted to the mandrel. 9 . Drive the roller to rotate around the center of rotation.

9 . The bearing spinning assembly device according to claim 1 , wherein the double-roller symmetrical spinning mechanism is connected to the roller up and down moving mechanism, and is used to drive the roller to move the spinning workpiece downward. 10 .

10. The bearing spinning assembly device according to any one of claims 1-9, wherein the bearing spinning assembly device is further connected to a feeding device for realizing automatic production.