[go: up one dir, main page]

WO1994026466A1 - Commande de la position et de la qualite d'un foret perçant a haute vitesse - Google Patents

Commande de la position et de la qualite d'un foret perçant a haute vitesse Download PDF

Info

Publication number
WO1994026466A1
WO1994026466A1 PCT/IE1994/000026 IE9400026W WO9426466A1 WO 1994026466 A1 WO1994026466 A1 WO 1994026466A1 IE 9400026 W IE9400026 W IE 9400026W WO 9426466 A1 WO9426466 A1 WO 9426466A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
drill bit
high speed
bits
light intensities
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.)
Ceased
Application number
PCT/IE1994/000026
Other languages
English (en)
Inventor
Sten Johan Hakansson Bjorsell
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1994026466A1 publication Critical patent/WO1994026466A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0011—Working of insulating substrates or insulating layers
    • H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching

Definitions

  • hit rate for those familiar with printed circuit board drilling machines
  • interpretation have to work with the image of a high speed continuously rotating drill bit, requiring a fast and effective analysis method.
  • drill speeds range from 16,000 rpm to 100,000 rpm and hit rates are typically 150 hits per minute and can be over 400 hits per minute.
  • the drill bit is examined at its top position during the delay time occurring during repositioning of table and/or drill spindle.
  • the physical embodiment of the invention involves a video camera attached to a drill spindle so that a right angle to drill axis view of the tip part of a drill bit illuminated from behind is obtained.
  • Mechanical designs, involving special mountings ,lenses and/or fiber optics is not the scope of the patent.
  • the method utilises back ighting of a rotating drill bit that lends itself to high speed computer evaluation when certain conditions are fulfilled: If an analogue camera is used, the response time of the photo sensitive materials in the picture plane should typically be several times longer than slowest drill bit rotation period and shorter than 2-3 frames(complete pictures) or use a mechanical shutter to avoid delay time until picture has stabilized.
  • the here preferred method involves a digital video camera with external light integration (exposure) time setting and no mechanical shutter, reducing weight, wear and cost.
  • the exposure time for each light sensitive pixel in the digital video camera is selected longer than the slowest rotation period for the drill bit. If light integration period is similar to rotation period, integration time should be close to integer multiples of rotation speed for correct averaging, or integration times should be selected many times larger than the rotating time to obtain required accuracy.
  • the resulting image - if black & white -displayed on a video monitor consists of white background, homogeneous gray areas where the spirals and cutting edges of the drill bit intermittently block the back light, while the core of the drill bit appears black.
  • Drill bits with chipped or rounded cutting- edge(s) can be separated from good drill bits in dedicated software, which also can evaluate drill tip height and drill diameter measures and stopped bits. Utilizing different light integration times, rotation speed can also be measured. Typically drill bits from 6 mm to 0.1 mm can be evaluated with the system.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention se rapporte au contrôle des forets entre des courses de perçage dans des perforatrices automatiques, généralement du type à broches multiples, à haute capacité, utilisées dans le perçage de cartes de circuits imprimés. Cette invention permet de contrôler tous les forets dans ce type de perforatrices entre chaque course de perçage, sans réduire la puissance de la machine dans un perçage à rendement normal. Cette invention utilise des caméras vidéo équipées de manière appropriée de fibres optiques ou d'autres accessoires déviant la lumière, et adaptées pour produire des valeurs moyennes instantanées d'intensité de lumière sur un système informatique afin de déterminer la géométrie du foret.
PCT/IE1994/000026 1993-05-06 1994-05-06 Commande de la position et de la qualite d'un foret perçant a haute vitesse Ceased WO1994026466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IES930338 IES930338A2 (en) 1993-05-06 1993-05-06 Automatic drill bit quality and position control
IES930338 1993-05-06

Publications (1)

Publication Number Publication Date
WO1994026466A1 true WO1994026466A1 (fr) 1994-11-24

Family

ID=11039957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE1994/000026 Ceased WO1994026466A1 (fr) 1993-05-06 1994-05-06 Commande de la position et de la qualite d'un foret perçant a haute vitesse

Country Status (2)

Country Link
IE (1) IES930338A2 (fr)
WO (1) WO1994026466A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305502A (en) * 1995-09-25 1997-04-09 Ford Motor Co Detection of tool failure
WO1998005515A1 (fr) * 1996-08-03 1998-02-12 Bayerische Motoren Werke Aktiengesellschaft Dispositif pour le controle optique au moyen d'une camera d'une empreinte faite sur une piece avec une roue d'impression
US9222350B2 (en) 2011-06-21 2015-12-29 Diamond Innovations, Inc. Cutter tool insert having sensing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142990A2 (fr) * 1983-11-23 1985-05-29 Kearney & Trecker Marwin Limited Inspection d'articles
US4667113A (en) * 1985-08-09 1987-05-19 Hitachi Seiko Ltd. Tool failure detection apparatus
GB2200747A (en) * 1986-12-23 1988-08-10 Kenneth Geoffrey Swift Tool identification and condition monitoring
US4869813A (en) * 1987-07-02 1989-09-26 Northrop Corporation Drill inspection and sorting method and apparatus
WO1990010192A1 (fr) * 1989-02-25 1990-09-07 Herbert Schulz Procede de mesure de tranchants
EP0395470A1 (fr) * 1989-04-14 1990-10-31 AEROSPATIALE Société Nationale Industrielle Système de controle de bris d'outil sur centre d'usinage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142990A2 (fr) * 1983-11-23 1985-05-29 Kearney & Trecker Marwin Limited Inspection d'articles
US4667113A (en) * 1985-08-09 1987-05-19 Hitachi Seiko Ltd. Tool failure detection apparatus
GB2200747A (en) * 1986-12-23 1988-08-10 Kenneth Geoffrey Swift Tool identification and condition monitoring
US4869813A (en) * 1987-07-02 1989-09-26 Northrop Corporation Drill inspection and sorting method and apparatus
WO1990010192A1 (fr) * 1989-02-25 1990-09-07 Herbert Schulz Procede de mesure de tranchants
EP0395470A1 (fr) * 1989-04-14 1990-10-31 AEROSPATIALE Société Nationale Industrielle Système de controle de bris d'outil sur centre d'usinage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305502A (en) * 1995-09-25 1997-04-09 Ford Motor Co Detection of tool failure
WO1998005515A1 (fr) * 1996-08-03 1998-02-12 Bayerische Motoren Werke Aktiengesellschaft Dispositif pour le controle optique au moyen d'une camera d'une empreinte faite sur une piece avec une roue d'impression
US9222350B2 (en) 2011-06-21 2015-12-29 Diamond Innovations, Inc. Cutter tool insert having sensing device

Also Published As

Publication number Publication date
IES58755B2 (en) 1993-11-03
IES930338A2 (en) 1993-11-03

Similar Documents

Publication Publication Date Title
US4596037A (en) Video measuring system for defining location orthogonally
US4472056A (en) Shape detecting apparatus
US6259109B1 (en) Web inspection system for analysis of moving webs
US6055329A (en) High speed opto-electronic gage and method for gaging
US20010017699A1 (en) Method and measuring device for measuring a rotary tool
US4417149A (en) Apparatus for detecting and measuring defects
GB2057124A (en) Crack development measuring equipment
JPH08257876A (ja) 工具摩耗量自動計測方法および工作機械における工具摩耗量自動計測装置
GB1581948A (en) Optical measurement system
WO1981003698A1 (fr) Procede et dispositif permettant le controle d'un mouvement
WO1994026466A1 (fr) Commande de la position et de la qualite d'un foret perçant a haute vitesse
US5606410A (en) Method for controlling the surface state of one face of a solid and the associated device
DE69830323T2 (de) Vorrichtung und verfahren zur bestimmung der optischen verzerrung eines transparenten substrats
US4543602A (en) Surface inspection method
CN208012545U (zh) 一种用于制孔质量检测的光谱共焦测量装置
US5953113A (en) Device and method for detecting, characterizing and correcting flaws in optic fiber
JPH0957583A (ja) 工具摩耗量自動計測方法および工具摩耗量自動計測装置
CN109764952A (zh) 一种轴抖动检测、转速测量方法和装置
CN106595800A (zh) 机器视觉料位计
JP2001147379A (ja) プリズム破損防止機構を備える全反射吸収スペクトル測定装置
JPH04329344A (ja) 実装基板検査装置
JP2004077501A (ja) 色分類装置
GB2070879A (en) Range finding apparatus
JPH0426976B2 (fr)
JPS5983007A (ja) 光学式測定機

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase