Title:
MANUFACTURING METHOD OF RACK SHAFT
Document Type and Number:
Japanese Patent JP2017056479
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a rack shaft capable of forming accurately rack teeth, while suppressing cost increase.SOLUTION: In a manufacturing method of a rack shaft 6 formed by bonding tandem in the axial direction, a first shaft and a second shaft, in a forging step, a rack region 12 where rack teeth 11 are arrayed in the axial direction X is formed on the first shaft 21. In a shrink fitting step, a recess 25 on the first shaft 21 is fitted to a salient 26 of the second shaft 22, and shrink fitting is carried out by utilizing heat in the forging step applied to the first shaft 21.SELECTED DRAWING: Figure 7
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Inventors:
MITSUI KUNIAKI
Application Number:
JP2015184132A
Publication Date:
March 23, 2017
Filing Date:
September 17, 2015
Export Citation:
Assignee:
JTEKT CORP
International Classes:
B21K1/76; B21J5/02; B21J5/12; B62D3/12; F16B4/00; F16H19/04
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Tamura Taichi
Mio Kawasaki
Tamura Taichi
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