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GB1204315A - Tracing apparatus - Google Patents

Tracing apparatus

Info

Publication number
GB1204315A
GB1204315A GB4281966A GB4281966A GB1204315A GB 1204315 A GB1204315 A GB 1204315A GB 4281966 A GB4281966 A GB 4281966A GB 4281966 A GB4281966 A GB 4281966A GB 1204315 A GB1204315 A GB 1204315A
Authority
GB
United Kingdom
Prior art keywords
line
photo
cell
pair
head
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
GB4281966A
Inventor
John Anthony Walters
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB4281966A priority Critical patent/GB1204315A/en
Priority to ES345428A priority patent/ES345428A1/en
Priority to SE1315567A priority patent/SE341313B/xx
Priority to FR122309A priority patent/FR1538167A/en
Publication of GB1204315A publication Critical patent/GB1204315A/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K11/00—Methods or arrangements for graph-reading or for converting the pattern of mechanical parameters, e.g. force or presence, into electrical signal
    • G06K11/02—Automatic curve followers, i.e. arrangements in which an exploring member or beam is forced to follow the curve

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Intelligence (AREA)
  • Computer Hardware Design (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

1,204,315. Photo-electric line follower. BRITISH OXYGEN CO. Ltd. Sept.12, 1967 [Sept.26, 1966], No.42819/66. Heading G1A. A photo-electric line, or boundary, follower is moved along a line by a co-ordinate drive system in response to signals emitted by two photo-cells positioned one after the other to view different portions of the line and each traversely scanning the line repeatedly. For following a line the photocells are mounted in a rotatable head with one photo-cell positioned upon the centre of rotation and the other ahead of it and known as the steering photo-cell. If the transverse scans become misaligned with the line the steering photo-cell generates a signal out of phase with a reference signal which rotates the head to turn the scan relative to the line and also to rotate the rotar of a synchorous resolver. One winding of the rotor is fed with the signal from the other photo-cell and a second winding with reference A.C. Control voltages are taken from 90 degrees phased stator windings to X and X motors of the co-ordinate drive system, whereupon the head is driven back in the direction of the line and on reaching it realigns itself. If a boundary between light and dark regions is being followed a pair of photo-cells replace each of the previous ones each pair being arranged side by side and their outputs fed to a differential amplifier. To scan the line each photo-cell or each pair may be mounted upon an oscillating rod as described in Specification 1,104, 578 or an image of the line may be scanned optically across the photocells.
GB4281966A 1966-09-26 1966-09-26 Tracing apparatus Expired GB1204315A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4281966A GB1204315A (en) 1966-09-26 1966-09-26 Tracing apparatus
ES345428A ES345428A1 (en) 1966-09-26 1967-09-25 Tracing apparatus
SE1315567A SE341313B (en) 1966-09-26 1967-09-25
FR122309A FR1538167A (en) 1966-09-26 1967-09-26 Apparatus for following or tracing a line whose training devices act according to coordinates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4281966A GB1204315A (en) 1966-09-26 1966-09-26 Tracing apparatus

Publications (1)

Publication Number Publication Date
GB1204315A true GB1204315A (en) 1970-09-03

Family

ID=10426110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4281966A Expired GB1204315A (en) 1966-09-26 1966-09-26 Tracing apparatus

Country Status (3)

Country Link
ES (1) ES345428A1 (en)
GB (1) GB1204315A (en)
SE (1) SE341313B (en)

Also Published As

Publication number Publication date
SE341313B (en) 1971-12-20
ES345428A1 (en) 1968-11-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee