Sensing head for the three-dimensional sensing of workpiece

Details Sensing head for the three-dimensional sensing of workpiece Sensing head for the three-dimensional sensing of workpiece

1993-05-28

1994-10-18

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

Movable contact probe, per se

33559, 33556, G01B 503

Patent

active

053555899

ABSTRACT:
A sensing head for a three-dimensional sensing of a workpiece includes a housing; a lid secured to the housing at one end thereof; a transmission member axially slidably received in the housing; a transducer mounted in the housing and cooperating with the transmission member for generating a signal representing axial displacements of the transmission member; a spring disposed in the housing and urging the transmission member toward the lid; and a bearing body disposed in the housing between the lid and the transmission member. The bearing body is a spherical segment having a base and a spherical surface. The base is in contact with an inner face of the lid. A sensing pin secured to the bearing body passes through the lid. The transmission member has a circular edge constituting a seat being in a circular contact with the spherical surface and centering the bearing body in the housing. The sensing pin and the bearing body are pivotally displaceable about a contact location between the inner lid face and a boundary edge between the base and the spherical segment. Any pivotal motion of the bearing body relative to the inner lid face causes an axial motion of the transmission body relative to the lid.

REFERENCES:
patent: 3250012 (1966-05-01), Hilton et al.
patent: 4352246 (1982-10-01), Hauert

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