GB2086589B - Electrical transducer for testing for straightness and evenness - Google Patents

Electrical transducer for testing for straightness and evenness

Info

Publication number
GB2086589B
GB2086589B GB8132740A GB8132740A GB2086589B GB 2086589 B GB2086589 B GB 2086589B GB 8132740 A GB8132740 A GB 8132740A GB 8132740 A GB8132740 A GB 8132740A GB 2086589 B GB2086589 B GB 2086589B
Authority
GB
United Kingdom
Prior art keywords
signals
straightness
evaluation stage
testing
evenness
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
GB8132740A
Other versions
GB2086589A (en
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.)
Jenoptik AG
Original Assignee
Carl Zeiss Jena GmbH
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 Carl Zeiss Jena GmbH filed Critical Carl Zeiss Jena GmbH
Publication of GB2086589A publication Critical patent/GB2086589A/en
Application granted granted Critical
Publication of GB2086589B publication Critical patent/GB2086589B/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
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/22—Measuring arrangements characterised by the use of fluids for measuring roughness or irregularity of surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)

Abstract

An apparatus for testing for straightness and evenness comprises two vertical displacement transducers (30,31) providing electrical signals representing the relative levels of a reference surface (33) and a test surface (2), respectively. These signals are subtracted at (23) and the difference signal, representing the difference in the levels is fed via an evaluation stage (54) to an indicator (26). To enable the evaluation stage to correct the signal to the indicator for the effects of tilting of the surface under test during the measurement, two further pairs of vertical displacement transducers (39, 40 are one pair) are provided which are disposed respectively in the directions of the horizontal x and y co-ordinates. The two signals from each further pair of transducers are subtracted one from the other at (44) and the two resulting difference signals DELTA alpha , DELTA beta are fed to the evaluation stage (54) which is adapted to effect correction of the first- mentioned difference signal. <IMAGE>
GB8132740A 1980-11-03 1981-10-30 Electrical transducer for testing for straightness and evenness Expired GB2086589B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD22490380A DD154038B2 (en) 1976-04-13 1980-11-03 ARRANGEMENT FOR STRAIGHT AND LEVEL MEASUREMENT

Publications (2)

Publication Number Publication Date
GB2086589A GB2086589A (en) 1982-05-12
GB2086589B true GB2086589B (en) 1985-05-01

Family

ID=5527003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8132740A Expired GB2086589B (en) 1980-11-03 1981-10-30 Electrical transducer for testing for straightness and evenness

Country Status (6)

Country Link
JP (1) JPS5788302A (en)
CH (1) CH655179A5 (en)
DD (1) DD154038B2 (en)
DE (1) DE3128451A1 (en)
FR (1) FR2493511B1 (en)
GB (1) GB2086589B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171809A (en) * 1983-03-18 1984-09-28 Hitachi Ltd Positioning mechanism
JPH0830743B2 (en) * 1991-03-07 1996-03-27 株式会社ミツトヨ Leveling device
CN115854949B (en) * 2023-03-02 2023-05-16 泗水县金佳工贸有限公司 Arc automatic detection device and control method for arc roller for roll paper

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU408891B2 (en) * 1967-09-11 1970-12-11 Theuniversity Of Queensland Tilt meter
FR1601197A (en) * 1968-12-31 1970-08-10
DE2607513C2 (en) * 1976-02-25 1979-02-15 Helmut Ing.(Grad.) Thierbach Automatic measuring and monitoring device for the precise determination of relative height differences between different measuring points
AT341239B (en) * 1976-09-07 1978-01-25 Wittmann Franz HOSE LEVEL WITH ELECTRIC LEVEL INDICATOR
US4087920A (en) * 1977-03-25 1978-05-09 The United States Of America As Represented By The Secretary Of The Interior Two-fluid tiltmeter

Also Published As

Publication number Publication date
DE3128451A1 (en) 1982-06-09
FR2493511B1 (en) 1986-09-12
CH655179A5 (en) 1986-03-27
DD154038A2 (en) 1982-02-17
JPS5788302A (en) 1982-06-02
DD154038B2 (en) 1986-07-16
GB2086589A (en) 1982-05-12
FR2493511A1 (en) 1982-05-07

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Legal Events

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