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Patent Searching and Data


Title:
METHOD OF MAKING METAL PART WITH PROTRUSION AND METHOD OF MAKING INERTIA ARM FOR HDD
Document Type and Number:
Japanese Patent JP2001328031
Kind Code:
A
Abstract:

To eliminate the difficulty of manufacturing a product of high accu racy and high quality and at a low cost ease in the conventional technology of making a metal part with protrusion protruded from the plate-like main body part.

The inertia arm 1 for HDD as a metal part with protrusion is a part made of phosphor bronze integrally formed out of a thin plate-like arm part 2, a weight part 3, and pin parts 4, 5. A material of plate shape in the total thickness or more of the arm part 2 and the weight part 3 is used as the plate-like material, first the weight part 3, the pin parts 4, 5, and three molded recessed parts in an opposite side to these parts are formed by press molding work, second an unnecessary part except a part serving as the arm part 2 in a side of the molded recessed part is cut removed, next when a visible outline of the inertial arm 1 is formed by punch work, the inertia arm 1 of a finished product is obtained.


Inventors:
Mitsuo, Sadaaki
Murata, Tsutomu
Application Number:
JP2000000148041
Publication Date:
November 27, 2001
Filing Date:
May 19, 2000
Export Citation:
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Assignee:
SUNCALL CORP
HODEN SEIMITSU KAKO KENKYUSHO LTD
International Classes:
B23P13/00; B21D22/02; (IPC1-7): B23P13/00; B21D22/02
Attorney, Agent or Firm:
岡村 俊雄