Probe head with self-contained electrical switch operated means

Details Probe head with self-contained electrical switch operated means Probe head with self-contained electrical switch operated means

1987-07-10

1989-03-28

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Single contact with a work engaging support

33558, 33561, 33503, G01B 728

Patent

active

048152145

ABSTRACT:
In the work-contacting probe head (or on the suspension of the deflectable work-contacting probe head) of a coordinate measuring machine, an electromagnet is provided to trigger a mechanical impact blow or vibration if the switch-contact circuit in the three-point mounting of the probe pin remains open for a predetermined short period of time after completion of a cycle of coordinate measurement of a given work-contacted measurement location. The delivery of the impact is sufficient to overcome any residual mechanical friction that may have interfered with return of the probe to its calibrated at-rest position, at completion of the measurement cycle.

REFERENCES:
patent: 4136458 (1979-01-01), Bell et al.
patent: 4153998 (1979-05-01), McMurtry
patent: 4177568 (1979-12-01), Werner et al.
patent: 4462162 (1984-07-01), McMurtry
patent: 4602196 (1986-07-01), Matsui
patent: 4637119 (1987-01-01), Schneider et al.

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