GB1108457A - Two axis photoelectric positioning system - Google Patents

Two axis photoelectric positioning system

Info

Publication number
GB1108457A
GB1108457A GB3752566A GB3752566A GB1108457A GB 1108457 A GB1108457 A GB 1108457A GB 3752566 A GB3752566 A GB 3752566A GB 3752566 A GB3752566 A GB 3752566A GB 1108457 A GB1108457 A GB 1108457A
Authority
GB
United Kingdom
Prior art keywords
cell
photo
light beam
diodes
square wave
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.)
Expired
Application number
GB3752566A
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.)
RUTH BARTLETT MARANTETTE
Original Assignee
RUTH BARTLETT MARANTETTE
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 RUTH BARTLETT MARANTETTE filed Critical RUTH BARTLETT MARANTETTE
Priority to GB3752566A priority Critical patent/GB1108457A/en
Publication of GB1108457A publication Critical patent/GB1108457A/en
Expired 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/12—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means
    • B23Q35/127—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means using non-mechanical sensing
    • B23Q35/128—Sensing by using optical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

1,108,457. Photo-electric position finding. R. B. MARANTETTE and W. F. MARANTETTE. 22 Aug., 1966, No. 37625/66. Heading H4D. [Also in Division G3] A workpiece is positioned along X and Y axes at right angles by control signals derived from a photo-electric cell in dependence on the position of a light beam on the photoelectrie cell which has passed through an aperture in a template interconnected with a table carrying the workpiece. As shown, a cadmium selenide photo-cell comprises resistance portions R1-R4, connected as shown, whereby an off-centre positioning of a light-beam through a master template, Fig. 1, not shown, causes inequality in the values of the resistance portions. Electrodes 24-27 of the photo-cell are energized from a multi-vibrator 28, through cathode followers 29, 30 with square wave signals 31, 32 which are 180 degrees out-of-phase. The positive half of square wave 31 is applied through a diode D1 to electrode 24, and simultaneously the negative half of square wave 32 is applied through a diode D2 to electrode 26; the electrodes 25, 27 are isolated by diodes D3, D4. Any non-centring of the light-beam in the Y axis results in a signal appearing at a point C of the photo-cell which is determined by summing resistors R7, R8 and fed to a cathodefollower 38 controlling a Y axis servomotor, not shown, to move a printed circuit board, to which the template is connected, so that the light beam moves towards the centre C of the cell. A similar system controls the centring of the light beam about the X-axis. Inadvertent drilling of the printed circuit board when the light beam is not falling on the cell is prevented by a signal on line 17 from a differential amplifier 42 comparing a tapped voltage from a potentiometer R15, supplied through diodes D9, D10 with a voltage from diodes D5, D7, which is greater than that from the potentiometer when the resistance portions R1-R4 are not illuminated and have an high resistance.
GB3752566A 1966-08-22 1966-08-22 Two axis photoelectric positioning system Expired GB1108457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3752566A GB1108457A (en) 1966-08-22 1966-08-22 Two axis photoelectric positioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3752566A GB1108457A (en) 1966-08-22 1966-08-22 Two axis photoelectric positioning system

Publications (1)

Publication Number Publication Date
GB1108457A true GB1108457A (en) 1968-04-03

Family

ID=10397136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3752566A Expired GB1108457A (en) 1966-08-22 1966-08-22 Two axis photoelectric positioning system

Country Status (1)

Country Link
GB (1) GB1108457A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437206A2 (en) * 2003-01-08 2004-07-14 Hans-Joachim Ollendorf Device for drilling eyeglass lenses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1437206A2 (en) * 2003-01-08 2004-07-14 Hans-Joachim Ollendorf Device for drilling eyeglass lenses
EP1437206A3 (en) * 2003-01-08 2004-12-08 Hans-Joachim Ollendorf Device for drilling eyeglass lenses

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