Multi-coordinate probe

Details Multi-coordinate probe Multi-coordinate probe

1987-06-11

1988-08-16

Haroian, Harry N.

Geometrical instruments

Gauge

Movable contact probe, per se

33169R, G01B 700

Patent

active

047634219

ABSTRACT:
A multi-coordinate probe with a stylus is disclosed wherein the stylus has a mounting or seating location defining its zero position. The stylus is deflectable from the zero position in several coordinate directions and is urged by a restoring force back into its zero position. The mounting location of the stylus is formed by the cooperation of surface areas of a plurality of balls with associated surface areas of support members. The balls and the support members are centrally arranged about the axis of the probe. The balls are fixedly mounted on a mounting member while the support members, which preferably are in the form of cylinder bodies with a V-shaped groove in the surface facing the balls, are, during assembly of the probe, rotatable about their own axis and axially movable to accomplish the desired precision seating of the ball surfaces in the grooves. After the positioning is accomplished, the cylindrical bodies are immovably fixed within the probe casing. A method is also disclosed to facilitate the precision seating of the balls in the grooves during assembly of the probe.

REFERENCES:
patent: 4136458 (1979-01-01), Bell et al.
patent: 4558312 (1985-12-01), Yonemoto et al.

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