JPS57140826A - Method and device for detection of revolution of work in hardening device of shaft or the like - Google Patents

Method and device for detection of revolution of work in hardening device of shaft or the like

Info

Publication number
JPS57140826A
JPS57140826A JP2552081A JP2552081A JPS57140826A JP S57140826 A JPS57140826 A JP S57140826A JP 2552081 A JP2552081 A JP 2552081A JP 2552081 A JP2552081 A JP 2552081A JP S57140826 A JPS57140826 A JP S57140826A
Authority
JP
Japan
Prior art keywords
shaft
switch
revolving
normally
disc
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
JP2552081A
Other languages
Japanese (ja)
Inventor
Akio Naito
Toshifumi Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOUSHIYUUHA NETSUREN KK
Neturen Co Ltd
Koshuha Netsuren KK
Original Assignee
KOUSHIYUUHA NETSUREN KK
Neturen Co Ltd
Koshuha Netsuren KK
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 KOUSHIYUUHA NETSUREN KK, Neturen Co Ltd, Koshuha Netsuren KK filed Critical KOUSHIYUUHA NETSUREN KK
Priority to JP2552081A priority Critical patent/JPS57140826A/en
Publication of JPS57140826A publication Critical patent/JPS57140826A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts

Abstract

PURPOSE:To detect whether hardening is accomplished with a simple device while the work revolves normally by detecting whether a shaft or the like is hardened or not while revolving normally, from whether a tail center revolves normally or not. CONSTITUTION:A disc 12 formed with plural notches 121 at equal intervals in a pivotally fitted circumferential part, a contactless switch 13 and a discriminating device 14 connected to the switch 13 are provided to the shaft part of a tail center 3. The device 14 detects the successive attaching and detaching of the recesses 122 in the circumferential part of the disc 12 revolving together with the center 3 to and from the switch 13 and compares the pulselike detection signal outputted from the switch 13 and the prescribed number of pulses per preset unit time. It discriminates the revolving direction of the shaft or the like by deciding said state to be normal when the number of the detection signals attains the prescribed number of the pulses and to be not when it does not.
JP2552081A 1981-02-25 1981-02-25 Method and device for detection of revolution of work in hardening device of shaft or the like Pending JPS57140826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2552081A JPS57140826A (en) 1981-02-25 1981-02-25 Method and device for detection of revolution of work in hardening device of shaft or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2552081A JPS57140826A (en) 1981-02-25 1981-02-25 Method and device for detection of revolution of work in hardening device of shaft or the like

Publications (1)

Publication Number Publication Date
JPS57140826A true JPS57140826A (en) 1982-08-31

Family

ID=12168327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2552081A Pending JPS57140826A (en) 1981-02-25 1981-02-25 Method and device for detection of revolution of work in hardening device of shaft or the like

Country Status (1)

Country Link
JP (1) JPS57140826A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0499220A (en) * 1990-08-10 1992-03-31 Fuji Denshi Kogyo Kk High-frequency quenching apparatus
JP2012087370A (en) * 2010-10-20 2012-05-10 Mitsubishi Motors Corp Induction hardening apparatus of shaft-like member

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5536527U (en) * 1978-08-31 1980-03-08
JPS5536248A (en) * 1978-09-08 1980-03-13 Teijin Ltd Resin composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5536527U (en) * 1978-08-31 1980-03-08
JPS5536248A (en) * 1978-09-08 1980-03-13 Teijin Ltd Resin composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0499220A (en) * 1990-08-10 1992-03-31 Fuji Denshi Kogyo Kk High-frequency quenching apparatus
JP2012087370A (en) * 2010-10-20 2012-05-10 Mitsubishi Motors Corp Induction hardening apparatus of shaft-like member

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