JPS5789561A - Detector for breakage of grindstone - Google Patents

Detector for breakage of grindstone

Info

Publication number
JPS5789561A
JPS5789561A JP16163180A JP16163180A JPS5789561A JP S5789561 A JPS5789561 A JP S5789561A JP 16163180 A JP16163180 A JP 16163180A JP 16163180 A JP16163180 A JP 16163180A JP S5789561 A JPS5789561 A JP S5789561A
Authority
JP
Japan
Prior art keywords
voltage
signal
grindstone
pulse signal
preset
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
JP16163180A
Other languages
Japanese (ja)
Inventor
Seiji Terajima
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha 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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP16163180A priority Critical patent/JPS5789561A/en
Publication of JPS5789561A publication Critical patent/JPS5789561A/en
Pending legal-status Critical Current

Links

Landscapes

  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

PURPOSE: To enhance the efficiency of work by surely detecting breakage of a grindstone by means of an on-line information processing system through the comparison of revolutions detected as a pulse signal with the preset voltage.
CONSTITUTION: A detecting head 1 detects the number revolutions of the rotary shaft of a grindstone in a cutting device in a non-contacting manner. A wave reformer 2 amplifies and reforms a signal from the detecting head 1 and generates a pulse signal by dividing one revolution by two or more. A F/V convertor 3 which converts a frequency signal into a voltage signal, converts the pulse signal input into a voltage-transformed signal, that is, the revolution is transformed into an analogous value. A high-pass filter 4 removes a direct crrent component from the output signal of the F/V convertor. A comparator 5 produces a positive voltage only when the voltage of the signal from the filter 4 is higher than the preset voltage, meanwhile produces 0 voltage when it is lower than the preset value. This set voltage 6 indicates that the grindstone is broken.
COPYRIGHT: (C)1982,JPO&Japio
JP16163180A 1980-11-17 1980-11-17 Detector for breakage of grindstone Pending JPS5789561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16163180A JPS5789561A (en) 1980-11-17 1980-11-17 Detector for breakage of grindstone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16163180A JPS5789561A (en) 1980-11-17 1980-11-17 Detector for breakage of grindstone

Publications (1)

Publication Number Publication Date
JPS5789561A true JPS5789561A (en) 1982-06-03

Family

ID=15738851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16163180A Pending JPS5789561A (en) 1980-11-17 1980-11-17 Detector for breakage of grindstone

Country Status (1)

Country Link
JP (1) JPS5789561A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61120462U (en) * 1985-01-11 1986-07-29
JP2017099722A (en) * 2015-12-02 2017-06-08 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Control device and control method of washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61120462U (en) * 1985-01-11 1986-07-29
JP2017099722A (en) * 2015-12-02 2017-06-08 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Control device and control method of washing machine

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