Title:
MANUFACTURE OF CAM SHAFT
Document Type and Number:
Japanese Patent JPH03194105
Kind Code:
A
Abstract:
PURPOSE:To prevent bend of a welded cam shaft by welding after shifting phases of welding start positions of high-energy beams of one side surface of a cam member by 180 degrees from the other side surface after assembly of the cam member to a pipe for hollow cam shaft. CONSTITUTION:When a cam member 2 is welded to a predetermined part of a pipe for hollow cam shaft 1, a laser head (not shown) for irradiating a high- energy beam, for example, a laser beam La is provided on one side surface 2a of the cam member 2, and a laser head (not shown) for irradiating a laser beam Lb on the other side surface 2b of the cam member 2. Each of the laser heads is arranged at the positions where phases of welding start positions 3 and 4 of the laser beams La and Lb are shifted fro each other by 180 degrees. And both the side surfaces 2a and 2b are welded at the same time by the laser beams La and Lb from the two fixed laser heads while rotating the pipe 1 and the cam member 2.
Inventors:
NOMURA SEIJI
MIWA YOSHIHISA
SHIBATA SHINYA
HANAKAWA KATSUNORI
MIWA YOSHIHISA
SHIBATA SHINYA
HANAKAWA KATSUNORI
Application Number:
JP33448989A
Publication Date:
August 23, 1991
Filing Date:
December 22, 1989
Export Citation:
Assignee:
MAZDA MOTOR CORP
International Classes:
F01L1/04; B23K15/00; F16H53/02; (IPC1-7): B23K15/00; F01L1/04; F16H53/02
Attorney, Agent or Firm:
Yoshiaki Nagata