Geometrical instruments – Gauge – Probe support
Patent
1992-07-09
1993-02-16
Cuchlinski, Jr., William A.
Geometrical instruments
Gauge
Probe support
33556, 33503, 33 1D, 74826, G01B 500, B23Q 1722
Patent
active
051859360
ABSTRACT:
A probe head (10) includes a support (12) by which the probe head is retained on the quill of a coordinate positioning machine, and a rotor (14) which is magnetically retained on the support (12). The rotor (14) is rotatable between a plurality of indexed angular positions provided by a ring or balls (26) and three adjacently positioned pairs of rollers (24). A drive dog shaft (20) is linearly movable to disengage the balls (26) from the rollers (24), and rotatable to rotate the rotor (14) to a new indexed position, whereupon the drive dog shaft (20) is retracted to re-engage a set of three balls (26) with the rollers (24). Exchange of a measuring probe (16) is performed by removing the entire rotor (14), and exchanging it for a further rotor carrying a different measuring probe. The engagement elements provided by rollers (24) and balls (26) thus serve the functions of (a) indexing and (b) repeatably retaining a rotor (14) on the support (12). This reduces the number of kinematic locations required between the movable arm of the machine and the probe (16) during the course of normal operation of a probe head to which a number of probes (16) are releasably couplable.
REFERENCES:
patent: 3091133 (1963-05-01), Hoeger
patent: 4168576 (1979-09-01), McMurtry
patent: 4644825 (1987-02-01), Yamazaki
patent: 4888877 (1989-12-01), Enderle et al.
Carl Zeiss Produktinformation, "DSE 05 Dreh-Schwenk-Einrichtung".
Renishaw Product Brochure & Description; "PH9 Automated Inspected System for Measuring Machines".
Cuchlinski Jr. William A.
Renishaw Metrology Limited
Wirthlin Alvin
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