Geometrical instruments – Area integrators – Electrical
Patent
1984-02-27
1986-09-02
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33125C, G01B 1104
Patent
active
046087583
ABSTRACT:
A measuring system includes a measuring graduation and scanning unit which scans the measuring graduation. The scanning unit and the measuring graduation are connected to respective ones of two objects, the position of which is to be measured. An error correction system which includes an error correction profile is provided for the correction of errors such as graduation errors and/or machine errors. The position of the correction profile is adjustable transversely to the measuring direction by means of eccentrics. Each of the eccentrics defines an index mark which is used with an error correction scale to indicate the position of the eccentric and therefore the deflection of the correction profile. In order to facilitate reproduceable error correction, the index marks are each defined by a respective index mark carrier which is mounted to the eccentric in an adjustable manner such that the index marks can be repositioned to define any arbitrary orientation of the eccentrics as a new zero position.
REFERENCES:
patent: 4430799 (1984-02-01), Affa
Dr. Johannes Heidenhain, Publication 208 40911.15.10,82 H printed in West Germany, Anderungen vorbehalten, Oct. 1982 "Inkrementales Langenmesssystem LS107".
Voelk Karl-Hermann
Wehrstein Karl-Heinz
Dr. Johannes Heidenhain GmbH
Haroian Harry N.
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