Title:
【発明の名称】主軸受ピンへ焼嵌めする前にクランクスローのボアを降伏応力まで半径方向に加圧する方法
Document Type and Number:
Japanese Patent JP3115895
Kind Code:
B2
Abstract:
A crank throw comprises two arms (1) and a crank pin (3). Each arm includes a bore (2) to be shrink-fitted over a pin portion on a main bearing pin. Before assembling the shaft, the bore (2) is subjected to a radial pressure of a level bringing the stress in at least part of the material surrounding the bore up on the yield stress of the material. After stress relaxation compression stresses remain in the material near the bore periphery, which reduces the resulting stress level in the assembled shaft.
Inventors:
Sarensen, Ole Rassler
Application Number:
JP50788195A
Publication Date:
December 11, 2000
Filing Date:
August 30, 1994
Export Citation:
Assignee:
Man B&W Diesel A/S
International Classes:
B23P9/02; B23P11/02; F16B4/00; F16C3/06; F16C3/10; (IPC1-7): B23P11/02; F16B4/00; F16C3/06
Domestic Patent References:
| JP60159302A | ||||
| JP4282012A |
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)