Scale plate arrangement

Details Scale plate arrangement Scale plate arrangement

1994-04-29

1996-02-06

Will, Thomas B.

Geometrical instruments

Distance measuring

Scale reading position sensor

33706, G01B 702

Patent

active

054887828

ABSTRACT:
A scale plate arrangement is adapted to be attached to a machine tool for detecting, for example, position and velocity of an object. The scale plate arrangement includes a scale-plate base and a scale plate which has a scale thereon. The scale plate is welded to the scale-plate base. With this, it is not necessary to use an adhesive or a fixing member to attach the scale plate to the scale-plate base. In case that the scale plate has a magnetic scale and that the scale-plate base is made of a magnetic material, the scale-plate base is formed with a recess which is positioned under the magnetic scale. With this, magnetic influence of the scale-plate base on the magnetic scale can be prevented.

REFERENCES:
patent: 2875524 (1959-03-01), Bower et al.
patent: 3816002 (1974-06-01), Wieg
patent: 4381609 (1983-05-01), Holstein
patent: 4400890 (1983-08-01), Ohkubo et al.
patent: 4430781 (1984-02-01), Meyer
patent: 4484391 (1984-11-01), Narimatsu
patent: 4570346 (1986-02-01), Burkhardt
Patent Abstract of Japan, vol. 11, No. 82 (M-571), Mar. 12, 1987.
Patent Abstract of Japan, vol. 17, No. 351 (E-1392), Jul. 2, 1993.

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