Title:
METHOD AND DEVICE FOR BENDING THIN SHEET METAL
Document Type and Number:
Japanese Patent JP2683989
Kind Code:
B2
Abstract:
PURPOSE: To effectively bend a sheet metal by winding a sheet metal on a core metal, clamping with an upper and lower slide plates, and sliding forward and backward while pressing.
CONSTITUTION: A sheet metal 7 is wound on a winding core metal 1 of a prescribed shape anticipating a spring back and fixed. The core metal 1 is clamped with upper and lower rubber-like slide plates 2, 3, having an elasticity supporting surface, and slid back and forth while applying a pressing force. The sliding direction of this time can be slid in any of one direction or both directions, and the sheet metal 7 is bent in corresponding to the shape of the core metal 1. Further, the core metal 1 is selected with a quality of material processed with the heat treatment of the quenching, etc., so as to surely keep the bending accuracy.
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Inventors:
Masami Otada
Shinobu Watanabe
Eitaro Matsui
Shinobu Watanabe
Eitaro Matsui
Application Number:
JP31470692A
Publication Date:
December 03, 1997
Filing Date:
November 25, 1992
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
B21D11/10; B26B19/04; (IPC1-7): B21D11/10; B26B19/04
Domestic Patent References:
| JP5586489A | ||||
| JP58141176A |
Attorney, Agent or Firm:
Hiroyuki Nakai
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