METHOD FOR DETECTING ABNORMALITY OF PRESS DIE DEVICE OF THIN PLATE

PROBLEM TO BE SOLVED: To correctly detect any abnormality such as degradation and crack of a coating during the press forming in advance. SOLUTION: When a thin plate 5 is press-formed by the relative movement of a punch 1 and a die 2, it is determined that a die is abnormal if the elastic strain gen...

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Hauptverfasser: HIWATARI SHUNJI, SUZUKI NORIYUKI, KUWAYAMA TAKUYA
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creator HIWATARI SHUNJI
SUZUKI NORIYUKI
KUWAYAMA TAKUYA
description PROBLEM TO BE SOLVED: To correctly detect any abnormality such as degradation and crack of a coating during the press forming in advance. SOLUTION: When a thin plate 5 is press-formed by the relative movement of a punch 1 and a die 2, it is determined that a die is abnormal if the elastic strain generated inside an objective die for measurement by the press-forming and measured by strain measuring means 11, 12 installed inside the objective die for measurement while at least one of the punch 1 and the die 2 is the objective die for measurement, exceeds a predetermined range, or is lower than the predetermined range. According to the present invention, a die surface can be repaired at an adequate timing, and troubles such as scuffing and breakage of the die can be avoided. COPYRIGHT: (C)2009,JPO&INPIT
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subjects MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PRESSES
PRESSES IN GENERAL
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
title METHOD FOR DETECTING ABNORMALITY OF PRESS DIE DEVICE OF THIN PLATE
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