JPS56107864A - Fit control device - Google Patents

Fit control device

Info

Publication number
JPS56107864A
JPS56107864A JP581280A JP581280A JPS56107864A JP S56107864 A JPS56107864 A JP S56107864A JP 581280 A JP581280 A JP 581280A JP 581280 A JP581280 A JP 581280A JP S56107864 A JPS56107864 A JP S56107864A
Authority
JP
Japan
Prior art keywords
sound pressure
wear
tool
ratio
preamplifier
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.)
Granted
Application number
JP581280A
Other languages
Japanese (ja)
Other versions
JPS6216789B2 (en
Inventor
Yoichi Kawada
Hiroshi Kuroumi
Kenji Tabei
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP581280A priority Critical patent/JPS56107864A/en
Publication of JPS56107864A publication Critical patent/JPS56107864A/en
Publication of JPS6216789B2 publication Critical patent/JPS6216789B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Control Of Machine Tools (AREA)
  • Machine Tool Sensing Apparatuses (AREA)

Abstract

PURPOSE: To monitor wear of a tool and obtain good follow-up control of machining by utilizing the phenomena that the sound pressure level of cutting noise is proportional to the load of the tool and that the power with high frequency component increases as the wear progresses.
CONSTITUTION: Sound pressure sensed off by an audio sensor 1 is put into a preamplifier 2, where it is estimated in the form of voltage in compliance with sound pressure level. Out put signal of the preamplifier 2 is divided by a by-pass filter 21 and a low-pass filter 22 into high and low frequency components, which are sent through an amplifier 3 and a mattenuator 23 to a calculator 5 as high frequency sound pressure signal VHP and low frequency sound pressure signal VLP, respectively, and there the ratio of these two signals VA=VHP/VLP will be calculated. This ratio VA has a certain relation with the wear of tool tW, whose condition accordingly can have one of the three divisions determined according to the limit wear sound pressure ratio VAL and wear progress sound pressure ratio VAS. Comparators 24, 25 will judge which division the tool concerned shall belong to.
COPYRIGHT: (C)1981,JPO&Japio
JP581280A 1980-01-23 1980-01-23 Fit control device Granted JPS56107864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP581280A JPS56107864A (en) 1980-01-23 1980-01-23 Fit control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP581280A JPS56107864A (en) 1980-01-23 1980-01-23 Fit control device

Publications (2)

Publication Number Publication Date
JPS56107864A true JPS56107864A (en) 1981-08-27
JPS6216789B2 JPS6216789B2 (en) 1987-04-14

Family

ID=11621486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP581280A Granted JPS56107864A (en) 1980-01-23 1980-01-23 Fit control device

Country Status (1)

Country Link
JP (1) JPS56107864A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115124A (en) * 1982-12-22 1984-07-03 Mitsubishi Electric Corp Electric discharge machining device
JPS59166448A (en) * 1983-03-10 1984-09-19 Mitsubishi Heavy Ind Ltd Machine tool under adaptive numerical control
JPS61198058A (en) * 1985-02-28 1986-09-02 Omron Tateisi Electronics Co Tool abrasion detecting system
JP2017205821A (en) * 2016-05-17 2017-11-24 株式会社リコー Information processor, information processing method, information processing program, and information processing system
JP2018004607A (en) * 2016-07-08 2018-01-11 株式会社リコー Diagnosis device, diagnosis system, diagnosis method, and program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115124A (en) * 1982-12-22 1984-07-03 Mitsubishi Electric Corp Electric discharge machining device
JPS59166448A (en) * 1983-03-10 1984-09-19 Mitsubishi Heavy Ind Ltd Machine tool under adaptive numerical control
JPS61198058A (en) * 1985-02-28 1986-09-02 Omron Tateisi Electronics Co Tool abrasion detecting system
JP2017205821A (en) * 2016-05-17 2017-11-24 株式会社リコー Information processor, information processing method, information processing program, and information processing system
JP2018004607A (en) * 2016-07-08 2018-01-11 株式会社リコー Diagnosis device, diagnosis system, diagnosis method, and program

Also Published As

Publication number Publication date
JPS6216789B2 (en) 1987-04-14

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