Work-contact probe head for coordinate-measuring instruments

Details Work-contact probe head for coordinate-measuring instruments Work-contact probe head for coordinate-measuring instruments

1983-03-31

1985-06-18

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33561, 33172E, G01B 702

Patent

active

045233829

ABSTRACT:
The invention contemplates a so-called switching probe head in which the movable element of the probe has a tensed at-rest position on support structure which determines its zero position and from which it is displaced upon work contact.
To increase the accuracy by which the zero position of the probe element (2, 4) is reproduced, the probe element is suspended, without friction, from a housing part (1) of the probe head, via at least three filaments (5a, b, c), wires or flexible strips. For torsionally rigid centering of the probe element, friction-free wire or strip arrangements are also usable; and torsional-rigid alternatives include use of a bellows (3) or of balls having rolling contact with opposing walls of centering grooves.

REFERENCES:
patent: 2858071 (1958-10-01), Stokes
patent: 4136458 (1979-01-01), Bell et al.
patent: 4177568 (1979-12-01), Werner
patent: 4397093 (1983-08-01), McMurtry

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