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Patent Searching and Data


Title:
中空ラックバーの製造方法及び製造装置
Document Type and Number:
Japanese Patent JP7133304
Kind Code:
B2
Abstract:
A manufacturing method for a hollow rack bar made of a hollow shaft material and including a toothed section which has a rack on an outer surface and a shaft section which is formed thinner than the toothed section, the manufacturing method includes drawing the hollow shaft material by using a die and a plug, and preforming regions of the hollow shaft material including a toothed section forming region configured to form the toothed section and a shaft section forming region configured to form the shaft section to have thicknesses according to the regions respectively, and forming the rack at the toothed section forming region of the hollow shaft material which is preformed.

Inventors:
Toshifumi Uemoto
Nobumoto Isshiki
Takashi Yamawaki
Application Number:
JP2017223770A
Publication Date:
September 08, 2022
Filing Date:
November 21, 2017
Export Citation:
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Assignee:
Neturen Co., Ltd.
International Classes:
B21C37/15; B21C1/00; B21K1/76
Domestic Patent References:
JP2007275896A
Foreign References:
EP0099311A1
DE19508798A1
US20060201227
Attorney, Agent or Firm:
Patent Business Corporation Koei Patent Office