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Forming mold and forming method of friction layer of single cone synchronous ring

A technology for forming molds and synchronizing rings, applied in the field of synchronizing rings, can solve the problems of poor reliability, low dimensional accuracy of finished products, and easy falling off of welding pieces, and achieve the effects of high connection strength, improved service life and stable friction coefficient.

Active Publication Date: 2017-07-21
武汉精密同创机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing molding method of sintered friction layer products is as follows: first sinter the friction material mixed powder on the steel plate by loose sintering method, and then make the cone ring by welding, but the friction plate welded on the cone ring, the finished dimensional accuracy Not high, poor reliability, easy to fall off the solder

Method used

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  • Forming mold and forming method of friction layer of single cone synchronous ring
  • Forming mold and forming method of friction layer of single cone synchronous ring
  • Forming mold and forming method of friction layer of single cone synchronous ring

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] A molding die for the friction layer of a single-cone synchronous ring, including a mold base 1 and an inner mold 2 that cooperate with each other, the mold base 1 and the inner mold 2 are both ring structures, and the upper end of the inner wall of the mold base 1 is used On the outer wall of the lower end of the synchronous ring base body 4a of the positioning single cone synchronous ring 4, the lower end of the inner wall of the mold base 1 is provided with an annular shelf 1a for resting the lower end bottom surface of the synchronous ring base body 4a along the circumferential direction, and the inner mold The outer wall of 2 is matched with the inner wall of the synchronous ring base body 4a, the bottom surface of the lower end of the inner mold 2 rests on the annular shelf 1a, and the bottom surface of the lower end of the inner mold 2 is provided along the circumferential direction for connecting with the The ring-shaped shelf 1a forms a ring-shaped clamping plat...

Embodiment 2

[0037] A molding die for the friction layer of a single-cone synchronous ring, including a mold base 1 and an inner mold 2 that cooperate with each other, the mold base 1 and the inner mold 2 are both ring structures, and the upper end of the inner wall of the mold base 1 is used On the outer wall of the lower end of the synchronous ring base body 4a of the positioning single cone synchronous ring 4, the lower end of the inner wall of the mold base 1 is provided with an annular shelf 1a for resting the lower end bottom surface of the synchronous ring base body 4a along the circumferential direction, and the inner mold The outer wall of 2 is matched with the inner wall of the synchronous ring base body 4a, the bottom surface of the lower end of the inner mold 2 rests on the annular shelf 1a, and the bottom surface of the lower end of the inner mold 2 is provided along the circumferential direction for connecting with the The ring-shaped shelf 1a forms a ring-shaped clamping plat...

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Abstract

A mold for a friction layer of a single-cone blocker ring comprises a mold base and an internal mold, wherein the upper end of the inner wall of the mold base is used for positioning the outer wall of the lower end of a blocker ring base body; an annular laying platform is arranged at the lower end of the inner wall of the mold base in the circumferential direction, the outer wall of the internal mold and the inner wall of the blocker ring base body are matched with each other, and the bottom surface of the lower end of the internal mold is laid on the annular laying platform; an annular clamping platform is arranged on the bottom surface of the lower end of the internal mold in the circumferential direction; the distance between the inner wall of the blocker ring base body and the outer wall of the internal mold is 1.1-1.15 times the thickness of the friction layer of the single-cone blocker ring; the expansion coefficient of the mold base and the expansion coefficient of the internal mold are equal and are both larger than the expansion coefficient of the blocker ring base body. A molding method comprises the following steps that the blocker ring base body is positioned and mounted in a molding cavity; the molding cavity is filled with a friction material mixed powder for molding the friction layer; the mold base, the internal mold, the blocker ring base body and the friction material mixed powder are sintered together after filling; the friction layer of the single-cone blocker ring is molded after sintering. The mold and the molding method are applicable to the blocker ring.

Description

technical field [0001] The invention relates to the field of synchronous rings, in particular to a molding die and a molding method for a friction layer of a single-cone synchronous ring. Background technique [0002] The synchronous ring is a synchronizer friction element set up by the automobile transmission to make the gear shift light and silent and to prolong the life of the combined teeth. It generates friction torque with the matching conical surface to synchronize the active and passive elements in an instant, so as to achieve no impact on the active and passive tooth ends. and light and silent shifting. [0003] At present, the sintered friction layer has been widely used as the friction layer of the synchronous ring for a long time. The friction and wear performance of the friction layer can be well controlled by its material composition. It has the advantages of durability, high temperature resistance, relatively simple forming method and high manufacturing precis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/10B22F7/08B22F1/00C22C9/02
CPCB22F1/0003B22F3/10B22F7/08B22F2201/013B22F2201/02C22C9/02
Inventor 万贤毅杨宏伟吕小宝
Owner 武汉精密同创机械有限公司