Title:
MANUFACTURE OF THRUST WASHER FOR UNIVERSAL JOINT
Document Type and Number:
Japanese Patent JP3035116
Kind Code:
B2
Abstract:
PURPOSE: To provide a method of manufacturing a thrust washer for a universal joint with no need to apply after-treatment for the removal of a gate mark, ejector pin marks, burrs, and the like.
CONSTITUTION: A metal mold with a cavity for forming a thin-walled collar part 6 on the inside of the inner diameter part 2 of the effective action part of a washer 1 is formed, and self-lubricative plastic material is injected for molding from a gate communicated directly with the collar part 6. After hardening, the thrust washer 1 molded with plural ejector pins brought into contact with the collar part 6 is taken out of the metal mold. A gate mark 7 and ejector pin marks 8 remain at the collar part 6 of the molded thrust washer 1, but there is no need to remove them.
Inventors:
Minoru Sagara
Norio Kintake
Norio Kintake
Application Number:
JP11316993A
Publication Date:
April 17, 2000
Filing Date:
May 14, 1993
Export Citation:
Assignee:
Matsui Manufacturing Co., Ltd.
International Classes:
B29C45/26; B29C45/37; B29D99/00; F16C33/10; F16C33/20; F16D3/38; F16D3/41; B29L31/00; (IPC1-7): F16D3/41; B29C45/26; B29D31/00; F16C33/20
Domestic Patent References:
| JP62119532U | ||||
| JP1133525U | ||||
| JP5531011U |
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)