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Patent Searching and Data


Title:
HEMMING PROCESSING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP2014188577
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hemming processing method capable of detecting abnormality during hemming processing and preventing quality deterioration of a folding joint part of each workpiece.SOLUTION: The hemming processing method is configured so that applied pressure from a roller is monitored by a pressure sensor always during hemming processing, and when the applied pressure is out of a range of ±3σ which is based on a good item waveform of preset applied pressure as standard, abnormality alarm means is actuated for stopping hemming processing. Thereby abnormality occurred during hemming processing can be detected, so that quality deterioration of a folding joint part of each workpiece can be prevented.

Inventors:
MORI TAKEO
NAKAMURA HISANORI
HASEBE TOMOHIKO
YOSHIHARA ISAO
Application Number:
JP2013068968A
Publication Date:
October 06, 2014
Filing Date:
March 28, 2013
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B21D39/02; B21D19/04; B30B15/28
Domestic Patent References:
JP2007296557A2007-11-15
JP2011104599A2011-06-02
JP2010284692A2010-12-24
Attorney, Agent or Firm:
Sepal Tsuneo
Yoshio Miyazaki
Kaoru Onozuka
Akio Tagami
Quantity Masahiro
Tsutomu Kato