SE7909251L - METHOD FOR LENGTH SEATING IN TWO DIFFERENT DIRECTIONS - Google Patents

METHOD FOR LENGTH SEATING IN TWO DIFFERENT DIRECTIONS

Info

Publication number
SE7909251L
SE7909251L SE7909251A SE7909251A SE7909251L SE 7909251 L SE7909251 L SE 7909251L SE 7909251 A SE7909251 A SE 7909251A SE 7909251 A SE7909251 A SE 7909251A SE 7909251 L SE7909251 L SE 7909251L
Authority
SE
Sweden
Prior art keywords
grating
lines
support
base
axes
Prior art date
Application number
SE7909251A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
N R Laidlaw
A T Shepherd
Original Assignee
Ferranti 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 Ferranti Ltd filed Critical Ferranti Ltd
Publication of SE7909251L publication Critical patent/SE7909251L/en

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
    • G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Two dimensional measuring apparatus includes a surface 15 on which an object to be measured can be placed and under which is an optical grating 16 comprising two sets of parallel lines perpendicular to axes at a known angle to each other, usually 90 DEG . A base 10 movable relative to surface 15 in a plane containing the directions of the axes carries probe 18 and support 19, bearing two reading heads 21, 22 each having a source, detector and an index grating with lines 23 or 24 cooperating with grating 16 to derive electrical signals indicative of movement of an index point, which is in the plane of lines 23, 24 and on the axis of probe 18. Support 13 is moveable relative to rails 11 on base 10, by wheels 12 and by sliding along their axles. <IMAGE>
SE7909251A 1978-11-11 1979-11-08 METHOD FOR LENGTH SEATING IN TWO DIFFERENT DIRECTIONS SE7909251L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7844146A GB2034880B (en) 1978-11-11 1978-11-11 Twodimensional measuring apparatus

Publications (1)

Publication Number Publication Date
SE7909251L true SE7909251L (en) 1980-05-12

Family

ID=10500979

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7909251A SE7909251L (en) 1978-11-11 1979-11-08 METHOD FOR LENGTH SEATING IN TWO DIFFERENT DIRECTIONS

Country Status (5)

Country Link
JP (1) JPS5571902A (en)
DE (1) DE2945175A1 (en)
GB (1) GB2034880B (en)
IT (1) IT1120878B (en)
SE (1) SE7909251L (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8420096D0 (en) * 1984-08-07 1984-09-12 Putra Siregar N I Measurement of errors
DE3909855A1 (en) * 1989-03-25 1990-09-27 Ems Technik Gmbh Method for determining the position of a positionable surface, and a position sensor (encoder)
DE4105433C2 (en) * 1991-02-21 1994-05-19 Heidenhain Gmbh Dr Johannes Device for contour shape testing on a processing or measuring machine
US5204524A (en) * 1991-03-22 1993-04-20 Mitutoyo Corporation Two-dimensional optical encoder with three gratings in each dimension
DE4206544A1 (en) * 1992-03-02 1993-09-09 Lpkf Cad Cam Systeme In Thueri Two-coordinate distance measurement system - has photoelectric incremental sensor arrangement with opaque scanning plates and window pair groups with line rasters
US5408750A (en) * 1992-04-09 1995-04-25 Mitutoyo Corporation X-Y table apparatus
WO1999017073A1 (en) * 1997-09-29 1999-04-08 Dr. Johannes Heidenhain Gmbh Device for detecting the position of two bodies
US6351313B1 (en) 1997-09-29 2002-02-26 Dr. Johannes Heidenhain Gmbh Device for detecting the position of two bodies
JP4444469B2 (en) 2000-08-07 2010-03-31 株式会社ミツトヨ Optical displacement measuring device
DE10313036B3 (en) 2003-03-24 2004-08-19 Klingelnberg Gmbh Position detection device for linearly displaced machine tool or measuring instrument carriage using read heads for line rasters in combination with distance sensors for providing coordinate position of carriage
DE10313038B4 (en) 2003-03-24 2005-02-17 Klingelnberg Gmbh Device for detecting the position of a probe element in a multi-coordinate measuring device
CN104634247B (en) * 2015-02-04 2017-05-17 东莞市凯丰仪器科技有限公司 Quadratic element imager

Also Published As

Publication number Publication date
JPS5571902A (en) 1980-05-30
IT1120878B (en) 1986-03-26
DE2945175A1 (en) 1980-05-22
IT7950792A0 (en) 1979-11-09
GB2034880B (en) 1983-03-09
GB2034880A (en) 1980-06-11

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