Joining method for shaft member and fitting member

Abstract

Abstract PURPOSE:To position a shaft member and fitting members and to join both easily with high accuracy without using processing means for positioning such as for staking by using specific positioning jigs in axial positioning of the fitting members to be inserted with the shaft member prior to sintering. CONSTITUTION:A steel pipe shaft 1 is inserted into cam pieces 2, journal pieces 3, etc. which are produced by molding of metallic powder for liquid phase sintering or presintering said powder after the molding. The projections on the inside circumferential surface of the pieces 2 are engaged with a prescribed number of longitudinal grooves 5 of the shaft 1, whereby the pieces are positioned in the rotating direction. Positioning jigs 6 fitted with bases 7, and blocks 8 having coeffts. of thermal expansion approximately the same or smaller than that of the shaft 1 by means of grooves 9 at prescribed intervals are used for axial positioning of the pieces 2, 3, etc. The shaft 1 is placed in the V-notches 11 at the top ends of the blocks 8, and the top ends of the blocks 8 are inserted between the pieces 2, 3, etc. and are adjusted to the length of the blocks 8. The entire part thereof is put in a sintering furnace and is sintered. The relations between respective relative position of all parts are maintained even during heating and after cooling.

Inventors

• 👤 Katsuhiko Ueda
• 👤 勝彦 上田
• 👤 Hitoshi Nakamura
• 👤 斉 中村
• 👤 Toshiyuki Nagura
• 👤 名倉　俊行
• 👤 Kazuhiko Tsuda
• 👤 和彦 津田

Bibliographic Details