CN113894744A

CN113894744A - Cage assembly assembling method

Info

Publication number: CN113894744A
Application number: CN202111069000.3A
Authority: CN
Inventors: 魏耀; 葛江; 翁一波
Original assignee: Gates Hydraulic Technology Changzhou Co ltd
Current assignee: Gates Hydraulic Technology Changzhou Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-07
Anticipated expiration: 2041-09-16
Also published as: CN113894744B

Abstract

The assembly method of the retainer assembly comprises the step of pressing the retainer into the assembly containing the spiral spring and the clutch seat from one end of the spiral spring, wherein the assembly comprises at least two clamps, one clamp is a movable clamp which can move along the radial direction of the spiral spring so as to clamp the spiral spring, and the assembly also comprises a pressure head which can press the retainer into the spiral spring along the axial direction of the spiral spring. It is through at least one removal anchor clamps centre gripping cage subassembly, makes things convenient for packing into and withdraw from of cage subassembly, compares in prior art's assembly, and is consuming time extremely short, and the process is simple, and easy operation, and the production beat accelerates, has improved production efficiency.

Description

Cage assembly assembling method

Technical Field

The invention relates to a retainer assembly assembling method, in particular to a retainer assembly assembling method for a clutch.

Background

In the clutch, a coil spring is used as a part of the clutch, and in the clutch, a clutch seat and a retainer are required to be press-fitted into a radially inner side of the coil spring by interference fit in an axial direction. Conventionally, the clutch seat and the retainer are respectively provided at both axial ends of the coil spring and are in interference fit with the coil spring. In order to prevent the coil spring from deforming when it is axially compressed during assembly, which would affect assembly, a cylindrical tool is usually provided having the same pitch as the coil spring in its natural state, and the inner wall of the tool is provided with a protrusion. During assembly, the clutch seat is axially pressed into the spiral spring from one end of the spiral spring; the assembly is then placed into a barrel tool by rotation, the projections being supported in spaced relation between the pitches of the helical spring; then the retainer is pressed in from the other end of the spiral spring in the axial direction, when the spiral spring is pressed, the protrusion can support the spiral spring, and meanwhile, the cylindrical tool can also support the spiral spring in the radial direction, so that the verticality of the spiral spring is ensured; after assembly, the clutch seat, coil spring, and holder assembly are unscrewed from the barrel tool.

The whole operation process needs 4 working procedures, the requirement on the number of equipment is high, and different equipment is needed to realize the working procedures of pressing in, screwing in and screwing out twice. In addition, the time consumption is long due to multiple processes, the production rhythm is long, and particularly, the time consumption of screwing in and screwing out is high, and the operation is complex.

Therefore, there is a need for a new method for assembling a retainer assembly, which has a simple structure, reduces the number of manufacturing processes, speeds up the production cycle, and is easy to operate and time-saving.

Disclosure of Invention

The assembly method of the retainer assembly of the invention, it includes pressing the retainer into the assembly comprising coil spring, clutch seat from one end of the coil spring, the said assembly includes at least two clamps, one of them is a movable clamp that can move radially in order to grasp the coil spring, also include a pressure head that can press the retainer into the coil spring axially along the coil spring; the clutch seat is pressed into the spiral spring from one end of the spiral spring along the axial direction of the spiral spring by a pressure head; placing the assembly of the spiral spring and the clutch seat into a fixture, wherein the assembly is placed beside the fixture; the movable clamp is operated to move and clamp the assembly, the protrusion extending into the pitch of the coil spring to support the coil spring in the axial direction while the clamp also supports the coil spring in the radial direction; placing the retainer at the other end of the spiral spring, and pressing the retainer into the spiral spring through a pressure head to ensure that part of the axial surface of the retainer is in interference fit with the axial surface of the radial inner side of one end of the spiral spring; the jig is opened and the assembled assembly is removed from the jig.

It is through at least one removal anchor clamps centre gripping cage subassembly, makes things convenient for packing into and withdraw from of cage subassembly, compares in prior art's assembly, and is consuming time extremely short, and the process is simple, and easy operation, and the production beat accelerates, has improved production efficiency.

Drawings

Fig. 1 is a schematic perspective exploded view of a retainer assembly tool of the present invention.

Fig. 2 is a schematic sectional view of the holder assembly assembling tool of the present invention.

Detailed Description

A holder assembly includes a coil spring 1, a holder 2, and a clutch seat 3. The diameters of the two axial ends of the spiral spring 1 are smaller than the diameter of the middle section of the spiral spring 1. The coil spring 1 is placed on a base (not shown) for assembly, and the jig 4 is provided on the base, and the holder assembly assembling tool of the present invention preferably includes two jigs 4, one of which is a fixed jig 41 that is fixed and does not move, and the other of which is a movable jig 42 that can move in the radial direction of the coil spring 1. The inner wall of the clamp 4 is provided with a protrusion 43 corresponding to the thread pitch of the coil spring 1, the protrusion 43 keeps the coil spring 1 axially supported when axially pressed, so that axial deformation is avoided, and meanwhile, the coil spring 1 is supported in the radial direction, so that large deformation of the coil spring 1 in the radial direction is avoided. Preferably, the protrusion 43 on the inner wall of the clamp 4 penetrates the whole clamp 4 from top to bottom and is matched with the shape of the coil spring 1. In other embodiments, the protrusions 43 of the inner wall may be provided only at both ends of the inner wall near the end portions of the coil spring 1, and may be a smooth inner wall at the axially middle portion of the inner wall.

During assembly, firstly, the clutch seat 3 is pressed into the coil spring 1 from one end of the coil spring 1 along the axial direction of the coil spring 1 by the pressure head 5, and part of the axial surface of the clutch seat 3 is in interference fit with the radial inner axial surface of one end of the coil spring 1. Then, the assembly of the coil spring 1 and the clutch seat 3 is put into the jig 4, the assembly is placed beside the fixing jig 41, the moving jig 42 is operated to move and hold the assembly, the protrusion 43 is protruded into the pitch of the coil spring 1 to support the coil spring 1 in the axial direction, and the jig 4 also exerts a supporting action on the coil spring 1 in the radial direction. Next, the holder 2 is placed at the other end of the coil spring 1, and the coil spring 1 is pressed by the indenter 5, so that a part of the axial surface of the holder 2 is interference-fitted with the radially inner axial surface of the one end of the coil spring 1. At the moment, the axial direction and the radial direction of the spiral spring 1 are supported by the clamp 4, so that the spiral spring 1 is not damaged, and meanwhile, the retainer 2 and the clutch seat 3 can keep good coaxiality during assembly. Finally, the clamp 4 is opened and the assembled assembly is removed from the clamp 4. Compared with the step of screwing the component into and out of the clamp 4 in the prior art, the machining method does not need to screw the component out, but directly places, clamps and loosens the component, and has simple steps and short consumed time.

In other embodiments, the number of the clamps 4 can also be adjusted according to the structure of the workpiece, for example, three or more.

In other embodiments, the stationary clamp may be changed to a moving clamp, i.e. the clamp comprises a plurality of moving clamps without a stationary clamp.

In other embodiments, the clutch seat or cage may be other components that require an interference fit with the coil spring.

Claims

1. A method of assembling a cage assembly, characterized in that,

the assembly comprises at least two clamps, one of which is a movable clamp capable of moving along the radial direction of the coil spring so as to clamp the coil spring, and a pressure head capable of pressing the retainer into the coil spring along the axial direction of the coil spring;

the clutch seat is pressed into the spiral spring from one end of the spiral spring along the axial direction of the spiral spring by a pressure head;

placing the assembly of the spiral spring and the clutch seat into a fixture, wherein the assembly is placed beside the fixture;

the movable clamp is operated to move and clamp the assembly, the protrusion extending into the pitch of the coil spring to support the coil spring in the axial direction while the clamp also supports the coil spring in the radial direction;

placing the retainer at the other end of the spiral spring, and pressing the retainer into the spiral spring through a pressure head to ensure that part of the axial surface of the retainer is in interference fit with the axial surface of the radial inner side of one end of the spiral spring;

the jig is opened and the assembled assembly is removed from the jig.

2. The method of assembling a cage assembly of claim 1, further comprising at least one non-moving fixture.

3. The method of assembling a cage assembly of claim 1, further comprising a movable clamp.

4. The assembly method of the cage assembly as set forth in claim 1, wherein the inner wall of the jig is provided with a projection corresponding to a pitch of the coil spring and holding the coil spring to be axially supported when axially compressed.

5. The assembly method of claim 4, wherein the protrusions on the inner wall of the clip extend through the entire clip from top to bottom and conform to the shape of the coil spring.

6. The retainer module assembling method as claimed in claim 4, wherein the protrusions of the inner wall are provided only at both ends of the inner wall near the end portions of the coil spring, and the smooth inner wall is provided at an axially intermediate portion of the inner wall of the coil spring.

7. The method of assembling a cage assembly of claim 1, wherein a portion of an axial face of the clutch mount is interference fitted with a radially inner axial face of one end of the coil spring.