Position measuring device

Details Position measuring device Position measuring device

1991-05-17

1992-09-01

Will, Thomas B.

Geometrical instruments

Distance measuring

Error compensation

33706, 33DIG11, G01B 702

Patent

active

051427923

ABSTRACT:
A position measuring device for measuring the relative positions of two objects. A scanning unit for scanning a graduation carrier is mounted on a bed of a processing machine through a coupling which is stiff in measuring direction. The coupling includes a first coupling part in the form of a plate fastened to the scanning unit and a second coupling part in the form of a pin having a spherical end face. The pin is fastened to an engagement member mounted on the bed of the processing machine. A sliding layer is provided between the two coupling parts in order to eliminate wear between the two coupling parts and to eliminate measuring inaccuracies.

REFERENCES:
patent: 3816002 (1974-06-01), Wieg
patent: 3816003 (1974-06-01), Litke
patent: 3942895 (1976-03-01), Meyer et al.
patent: 4095903 (1978-06-01), Feichtinger
patent: 4215480 (1980-08-01), Fisher et al.
patent: 4262423 (1981-04-01), Affa
patent: 4512082 (1985-04-01), Burkhardt
patent: 4608758 (1986-09-01), Voelk et al.
patent: 4982507 (1991-01-01), Rieder et al.

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