TW200613089A - Method for detecting cracking of glass plate and device thereof, and method for polishing glass plate and device thereof - Google Patents

Method for detecting cracking of glass plate and device thereof, and method for polishing glass plate and device thereof

Info

Publication number
TW200613089A
TW200613089A TW094125061A TW94125061A TW200613089A TW 200613089 A TW200613089 A TW 200613089A TW 094125061 A TW094125061 A TW 094125061A TW 94125061 A TW94125061 A TW 94125061A TW 200613089 A TW200613089 A TW 200613089A
Authority
TW
Taiwan
Prior art keywords
glass plate
sound
cracking
prescribed time
acquired
Prior art date
Application number
TW094125061A
Other languages
Chinese (zh)
Other versions
TWI350227B (en
Inventor
Atsushi Kiyama
Masashi Yaku
Yoshihiro Tomaru
Original Assignee
Asahi Glass Fine Techno 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 Asahi Glass Fine Techno Co Ltd filed Critical Asahi Glass Fine Techno Co Ltd
Publication of TW200613089A publication Critical patent/TW200613089A/en
Application granted granted Critical
Publication of TWI350227B publication Critical patent/TWI350227B/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/005—Control means for lapping machines or devices
    • B24B37/0053—Control means for lapping machines or devices detecting loss or breakage of a workpiece during lapping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/003—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving acoustic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/04—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a rotary work-table

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

This invention is to detect a cracking sound of a glass plate during polishing distinctly from cracking sounds or the like of the other glass plates. Sounds are collected by a microphone 30. A high-frequency sound is extracted by a filter 40. Next, a sound level, which becomes maximum in a prescribed time T1 (T1=10 milliseconds), is acquired for each prescribed time T1 regarding the high-frequency sound extracted by the filter 40. After that, a sound level, which is minimum among the sound levels acquired in a past prescribed time T2 (T2=300 milliseconds) from the present, is acquired as a stationary sound level. Then, one count is added when a ratio of the present sound level acquired for each T1 and the stationary sound level exceeds a prescribed value (2.5). Third and fourth steps are repeated for each prescribed time T1 until the count reaches ten counts. When the count reaches ten counts within a prescribed time T3 (5 seconds), it is determined that cracking occurs to the glass plate G, and a signal showing the cracking is outputted to a control part 24.
TW094125061A 2004-07-23 2005-07-22 Method for detecting cracking of glass plate and device thereof, and method for polishing glass plate and device thereof TW200613089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004216048A JP4569749B2 (en) 2004-07-23 2004-07-23 Glass plate crack detection method and apparatus, and glass plate polishing method and apparatus

Publications (2)

Publication Number Publication Date
TW200613089A true TW200613089A (en) 2006-05-01
TWI350227B TWI350227B (en) 2011-10-11

Family

ID=35785330

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094125061A TW200613089A (en) 2004-07-23 2005-07-22 Method for detecting cracking of glass plate and device thereof, and method for polishing glass plate and device thereof

Country Status (4)

Country Link
JP (1) JP4569749B2 (en)
KR (1) KR100856361B1 (en)
TW (1) TW200613089A (en)
WO (1) WO2006009222A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010067732A1 (en) 2008-12-12 2010-06-17 旭硝子株式会社 Grinding device, grinding method, and method of manufacturing glass sheet
US9033220B2 (en) 2011-11-02 2015-05-19 Nippon Steel & Sumitomo Metal Corporation Production management method for steel tubes and pipes
JP6792792B2 (en) 2016-04-12 2020-12-02 Ａｇｃ株式会社 Glass breakage detection method, glass breakage detection device, glass plate polishing method, glass plate polishing device, and glass plate manufacturing method
DE102019215077A1 (en) * 2019-09-30 2021-04-01 Hegla Gmbh & Co. Kg Cutting process and cutting device for scribing components made of glass or ceramic, as well as processes for dividing components made of glass or ceramic

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825227B2 (en) * 1979-11-27 1983-05-26 トヨタ自動車株式会社 Method for inspecting cracks in workpiece material
JPS6069550A (en) * 1983-09-26 1985-04-20 Hiroshi Eda Method and device for detecting grinding crack
JPS6079261A (en) * 1983-10-06 1985-05-07 Nachi Fujikoshi Corp Tool abnormality detector
JPS61132861A (en) * 1984-11-30 1986-06-20 Omron Tateisi Electronics Co Tool breakage detecting device
JPS62197891A (en) * 1986-02-25 1987-09-01 松下電工株式会社 Glass breakage detector
JPS63297237A (en) * 1987-05-29 1988-12-05 Matsushita Electric Ind Co Ltd Dividing apparatus
JPH04195298A (en) * 1990-11-22 1992-07-15 Fujitsu Ten Ltd Glass crack alarm device
JP3573216B2 (en) * 1994-03-22 2004-10-06 旭硝子株式会社 Method and apparatus for cutting sheet glass
JP2000024919A (en) * 1998-07-14 2000-01-25 Nippei Toyama Corp Wafer machining method and grinder
JP4078252B2 (en) * 2003-05-30 2008-04-23 キヤノン株式会社 Cylindrical electrophotographic photoreceptor substrate manufacturing method, cylindrical electrophotographic substrate, electrophotographic photoreceptor, and cylindrical electrophotographic substrate manufacturing apparatus

Also Published As

Publication number Publication date
KR100856361B1 (en) 2008-09-04
TWI350227B (en) 2011-10-11
JP4569749B2 (en) 2010-10-27
KR20070032952A (en) 2007-03-23
WO2006009222A1 (en) 2006-01-26
JP2006035343A (en) 2006-02-09

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees