Methods and control systems for registering a datum position bet

Details Methods and control systems for registering a datum position bet Methods and control systems for registering a datum position bet

1993-04-12

1994-08-09

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

250561, G01B 1114

Patent

active

053371470

ABSTRACT:
A method and apparatus for registering a datum position between two components of a machine tool having a path of relative movement, wherein relative movement of the components in path is monitored and a beam of parallel electro-magnetic radiation is directed from a source on one of the components across path of relative movement. A receiver is provided for receiving the beam at one position in relative movement between the components to define a datum position. Electro-magnetic radiation received at receiver location is monitored and used to detect when the radiation received is equivalent to one half of the full beam emitted by the source to define datum position.

REFERENCES:
patent: 3532892 (1970-10-01), Murphy
patent: 3816000 (1974-06-01), Fiedler
patent: 4021119 (1977-05-01), Stauffer
patent: 4733968 (1988-03-01), Robinson et al.
patent: 4928019 (1990-05-01), Tomikawa et al.

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