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Title:
PRODUCTION OF PULLEY OF SHEET METAL
Document Type and Number:
Japanese Patent JPH07275980
Kind Code:
A
Abstract:

PURPOSE: To form a cuplike recessing part without drawing in reverse in a producing method for a pulley of sheet metal having the cuplike recessing part for attaching a bearing.

CONSTITUTION: This production consists of a drawing process to form a hollowed hemispheric pre-recessing part and a flange part of a flat sheet metal blank, a recessing part finishing process to finish the pre-recessing part into a cup like recessing part being able to fit with a bearing, a drum wall forming process to bend a flange-like part 12 to the recessing direction of the cup-like recessing part and to form it into a drum wall for winding a belt, and a receiving part forming process to form an opening with a prescribed diameter on the central part of the bottom wall of the cup-like recessing part and to provide an inner flange-like receiving part 24 surrounding the opening.


Inventors:
KANEMITSU TOSHIAKI
ODA KAZUYUKI
Application Number:
JP6856094A
Publication Date:
October 24, 1995
Filing Date:
April 06, 1994
Export Citation:
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Assignee:
KANEMITSU KK
International Classes:
B21D22/30; B21D53/26; B21H1/04; (IPC1-7): B21D53/26; B21D22/30; B21H1/04
Domestic Patent References:
JPH05185176A1993-07-27
Attorney, Agent or Firm:
Koichi Suzue (1 person outside)