GB1412991A - Method of and apparatus for inspecting the contour of an object - Google Patents

Method of and apparatus for inspecting the contour of an object

Info

Publication number
GB1412991A
GB1412991A GB3560472A GB3560472A GB1412991A GB 1412991 A GB1412991 A GB 1412991A GB 3560472 A GB3560472 A GB 3560472A GB 3560472 A GB3560472 A GB 3560472A GB 1412991 A GB1412991 A GB 1412991A
Authority
GB
United Kingdom
Prior art keywords
template
workpiece
july
sensor
image
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
GB3560472A
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB3560472A priority Critical patent/GB1412991A/en
Publication of GB1412991A publication Critical patent/GB1412991A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting

Abstract

1412991 Template followers ROLLS ROYCE (1971) Ltd 17 July 1973 [29 July 1972] 35604/72 Heading G1A In a photo-electric system for comparing a workpiece 11 with a master-template 32, the detector (and light source) are mechanically linked to a feeler 17, or a cutting tool, to move in correspondence as it moves over the workpiece. The template is fixed relative to the workpiece and comprises the outline between the transparent and opaque parts of a plate. An image of the template is formed on the 4- quadrant photo-electric cell of the sensor 34, by a lens mounted in a swinging arm 35. The arm is servodriven to automatically centre the image on the sensor, and its position measured by a "pickoff" 40 to indicate the disparity between the workpiece and the template. These servo drive arrangements and the circuit are illustrated in a little more detail in Figs. 2 and 3 (not shown). The system applied to a lathe tool cutting a workpiece relative to a template is illustrated schematically in Fig. 4 (not shown).
GB3560472A 1972-07-29 1972-07-29 Method of and apparatus for inspecting the contour of an object Expired GB1412991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3560472A GB1412991A (en) 1972-07-29 1972-07-29 Method of and apparatus for inspecting the contour of an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3560472A GB1412991A (en) 1972-07-29 1972-07-29 Method of and apparatus for inspecting the contour of an object

Publications (1)

Publication Number Publication Date
GB1412991A true GB1412991A (en) 1975-11-05

Family

ID=10379564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3560472A Expired GB1412991A (en) 1972-07-29 1972-07-29 Method of and apparatus for inspecting the contour of an object

Country Status (1)

Country Link
GB (1) GB1412991A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412395A1 (en) * 1989-08-08 1991-02-13 Siemens Aktiengesellschaft Bucket wheel excavator steering for building planned surfaces
DE4114728A1 (en) * 1991-05-06 1992-11-12 Widmann Bildverarbeitungssyste O=ring testing device for detecting surface errors - uses pressure rollers providing oval ring configuration and intermediate pressure roller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412395A1 (en) * 1989-08-08 1991-02-13 Siemens Aktiengesellschaft Bucket wheel excavator steering for building planned surfaces
DE4114728A1 (en) * 1991-05-06 1992-11-12 Widmann Bildverarbeitungssyste O=ring testing device for detecting surface errors - uses pressure rollers providing oval ring configuration and intermediate pressure roller

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Legal Events

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