JPS6440270A - Fine grindstone contact detecting device for grinder - Google Patents

Fine grindstone contact detecting device for grinder

Info

Publication number
JPS6440270A
JPS6440270A JP62196988A JP19698887A JPS6440270A JP S6440270 A JPS6440270 A JP S6440270A JP 62196988 A JP62196988 A JP 62196988A JP 19698887 A JP19698887 A JP 19698887A JP S6440270 A JPS6440270 A JP S6440270A
Authority
JP
Japan
Prior art keywords
signal
time
condition
becomes
contact
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
JP62196988A
Other languages
Japanese (ja)
Other versions
JPH0632901B2 (en
Inventor
Satoru Tanabe
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co 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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP62196988A priority Critical patent/JPH0632901B2/en
Publication of JPS6440270A publication Critical patent/JPS6440270A/en
Publication of JPH0632901B2 publication Critical patent/JPH0632901B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

PURPOSE:To output a proper contact signal only without being affected by noise and reduce the cycle time by providing contact determining means for outputting a contact detection signal when a duration time of a set condition of condition retaining means becomes a predetermined time or more. CONSTITUTION:A sensor 21 detects a signal a generated when a grinding wheel of a grinder contacts a work, and a fluctuated threshold circuit 28 outputs a high level threshold VH and a low level threshold VL according to the signal a. When the signal level of the sensor becomes higher than the high level threshold, a first comparator 29 outputs a condition retaining means setting signal. A contact determining means 34 determines whether or not a duration time of a set condition of condition retaining means 31 becomes a predetermined time or more. When the duration time of the set condition becomes the predetermined time or more, a contact detection signal e is output. Accordingly, it is prevented that a lost grinding time will be unnecessarily increased because of malfunction due to a noise signal during grinding.
JP62196988A 1987-08-06 1987-08-06 Grinding wheel fine contact detection device Expired - Fee Related JPH0632901B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62196988A JPH0632901B2 (en) 1987-08-06 1987-08-06 Grinding wheel fine contact detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62196988A JPH0632901B2 (en) 1987-08-06 1987-08-06 Grinding wheel fine contact detection device

Publications (2)

Publication Number Publication Date
JPS6440270A true JPS6440270A (en) 1989-02-10
JPH0632901B2 JPH0632901B2 (en) 1994-05-02

Family

ID=16366962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62196988A Expired - Fee Related JPH0632901B2 (en) 1987-08-06 1987-08-06 Grinding wheel fine contact detection device

Country Status (1)

Country Link
JP (1) JPH0632901B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05192865A (en) * 1992-01-20 1993-08-03 Isao Murakami Method for determining position at which rotary grinding wheel starts grinding
JP2002103219A (en) * 2000-09-28 2002-04-09 Toyoda Mach Works Ltd Grinding device
JP2004255504A (en) * 2003-02-25 2004-09-16 Koyo Seiko Co Ltd Grinder and its control method
WO2007080699A1 (en) * 2006-01-12 2007-07-19 Tokyo Seimitsu Co., Ltd. Working system, contact detecting method, and ae contact detecting device
JP2009248253A (en) * 2008-04-07 2009-10-29 Tokyo Seimitsu Co Ltd Contact detection device, machining device, and contact detection method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173462A (en) * 1981-04-15 1982-10-25 Yoshiaki Shiono Detector for instant when tool and material to be worked start to contact with each other
JPS61132861A (en) * 1984-11-30 1986-06-20 Omron Tateisi Electronics Co Tool breakage detecting device
JPS63114876A (en) * 1986-10-30 1988-05-19 Koyo Seiko Co Ltd Tcol contact detecting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57173462A (en) * 1981-04-15 1982-10-25 Yoshiaki Shiono Detector for instant when tool and material to be worked start to contact with each other
JPS61132861A (en) * 1984-11-30 1986-06-20 Omron Tateisi Electronics Co Tool breakage detecting device
JPS63114876A (en) * 1986-10-30 1988-05-19 Koyo Seiko Co Ltd Tcol contact detecting device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05192865A (en) * 1992-01-20 1993-08-03 Isao Murakami Method for determining position at which rotary grinding wheel starts grinding
JP2002103219A (en) * 2000-09-28 2002-04-09 Toyoda Mach Works Ltd Grinding device
JP2004255504A (en) * 2003-02-25 2004-09-16 Koyo Seiko Co Ltd Grinder and its control method
WO2007080699A1 (en) * 2006-01-12 2007-07-19 Tokyo Seimitsu Co., Ltd. Working system, contact detecting method, and ae contact detecting device
JP5106121B2 (en) * 2006-01-12 2012-12-26 株式会社東京精密 Machining system, contact detection method, and AE contact detection device
JP2009248253A (en) * 2008-04-07 2009-10-29 Tokyo Seimitsu Co Ltd Contact detection device, machining device, and contact detection method

Also Published As

Publication number Publication date
JPH0632901B2 (en) 1994-05-02

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