JPS60133914A - Predicting method of die breakage - Google Patents

Predicting method of die breakage

Info

Publication number
JPS60133914A
JPS60133914A JP24133283A JP24133283A JPS60133914A JP S60133914 A JPS60133914 A JP S60133914A JP 24133283 A JP24133283 A JP 24133283A JP 24133283 A JP24133283 A JP 24133283A JP S60133914 A JPS60133914 A JP S60133914A
Authority
JP
Japan
Prior art keywords
die
voltage
signal
predicting
dies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24133283A
Other languages
Japanese (ja)
Inventor
Shoichi Ishikura
Yoshio Yoshimura
Norihisa Matsushima
Shuichi Nakada
Yasuo Sakai
Original Assignee
Sumitomo Electric Ind Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Ind Ltd filed Critical Sumitomo Electric Ind Ltd
Priority to JP24133283A priority Critical patent/JPS60133914A/en
Publication of JPS60133914A publication Critical patent/JPS60133914A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make a die capable of being reground and reused and to prevent the generation of rejects by detecting a stress wave generated from a die as an electric signal with the aid of a sensor and predicting the breakage of die by the variation of a magnitude of said signal.
CONSTITUTION: Sensors 2, 3 using piezo-electric elements are attached to dies 4, 5 or a die holder 6, and a stress wave produced in the frictional surfaces of the dies 4, 5 and a brass plated steel wire 1 during drawing is converted into an electric signal. The signal is outputted in a form of a DC voltage proportional to an effective value by an effective value of voltage 10, after passing through a preamplifier 8 and a main amplifier 9. The DC voltage is inputted to an alarm device, from which an alarm is given to machine operators by a lamp and a buzzer, etc. when the input voltage exceeds a set value.
COPYRIGHT: (C)1985,JPO&Japio
JP24133283A 1983-12-20 1983-12-20 Predicting method of die breakage Pending JPS60133914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24133283A JPS60133914A (en) 1983-12-20 1983-12-20 Predicting method of die breakage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24133283A JPS60133914A (en) 1983-12-20 1983-12-20 Predicting method of die breakage

Publications (1)

Publication Number Publication Date
JPS60133914A true JPS60133914A (en) 1985-07-17

Family

ID=17072719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24133283A Pending JPS60133914A (en) 1983-12-20 1983-12-20 Predicting method of die breakage

Country Status (1)

Country Link
JP (1) JPS60133914A (en)

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