Title:
METHOD FOR FORMING INNER-PERIPHERAL GROOVE OF SINTERED BEARING
Document Type and Number:
Japanese Patent JP3608777
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming an inner-peripheral groove of a sintered bearing by which the inner-peripheral groove can be formed with certainty even in the case of a bearing stock which is free from spring back or of which spring back cannot be expected.
SOLUTION: A core rod 30 having a small-diameter part 31 and a large- diameter part 32 is inserted into a shaft hole W1 of a cylindrical work W composed of a sintered compact. An operation in which the large-diameter part 32 is pressed on the inner-peripheral surface of the work W while vibrating the core rod 30 in a radial direction to strike the inner-peripheral surface of the work W with the large-diameter part 32 is allowed to run over the whole peripheral region.
Inventors:
Toshikazu Takehana
Go Yanase
Shunichi Togashi
Go Yanase
Shunichi Togashi
Application Number:
JP2000343174A
Publication Date:
January 12, 2005
Filing Date:
November 10, 2000
Export Citation:
Assignee:
Hitachi Powdered Metals Co., Ltd.
International Classes:
F16C33/14; B22F3/24; B22F5/00; (IPC1-7): B22F3/24; B22F5/00; F16C33/14
Domestic Patent References:
| JP5065505A |
Attorney, Agent or Firm:
Suenari Mikio