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Patent Searching and Data


Title:
PRODUCTION OF PARTS WITH DIFFERENT LEVEL FORM PART
Document Type and Number:
Japanese Patent JPH07164093
Kind Code:
A
Abstract:

PURPOSE: To manufacture a parts with different level form part without bringing about the deteriorated accuracy by simultaneously forming a recessed form part and the different level form part to a sheet material intermittently fed and forming a rotary center part in the different level form part to form the out ward form part.

CONSTITUTION: A progressive die device 10 is constituted of a movable side upper die part 21 and a fixing side lower die part 22. The parts having the different level form part is manufactured by using this die device. The material 6 having a prescribed thickness is intermittently fed to the downstream side with a supplying roll 7. The recessed form part by using a punch 11 to the one side surface of the sheet material 6 and the different level form part by using a die 13 to the other surface of the sheet material 6 are simultaneously formed. Then the outward form part is formed by using the punch 19 and the die 20. A rotary center boring hole 5 is formed with the punch 16 at the rotary center part in the parts. By this method, the parts which can not be manufactured by the conventional pressing, can be manufactured at a low cost only by the press die device.


Inventors:
FUKUSHIMA AKIO
Application Number:
JP31055493A
Publication Date:
June 27, 1995
Filing Date:
December 10, 1993
Export Citation:
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Assignee:
COPAL CO LTD
International Classes:
B21K1/30; (IPC1-7): B21K1/30
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)