Geometrical instruments – Gauge – Movable contact probe – per se
Patent
1983-09-12
1985-07-23
Frankfort, Charles E.
Geometrical instruments
Gauge
Movable contact probe, per se
33169R, G01B 500
Patent
active
045301603
ABSTRACT:
A multicoordinate sensing head is disclosed which includes a sensing pin and a tappet. Both the sensing pin and the tappet define respective 90.degree. conical recesses which serve to capture a ball therebetween. This arrangement converts both axial and radial movement of the pin into axial movement of the tappet at a constant 1:1 ratio. A position measuring system is used to measure the axial position of the tappet. This position measuring system therefore can be used to measure both axial and radial deflection of the sensing pin. The sensing pin is mounted in the sensing head by means of an axial guide and a two-dimensional guide such that the axis of the sensing pin is maintained parallel to the axis of the tappet. This arrangement allows simultaneous radial and axial deflections of the sensing pin.
REFERENCES:
patent: 3520063 (1970-07-01), Rethwish et al.
patent: 4447958 (1984-05-01), Tanaka
pp. 90, 91 from Bauelemente Der Physikalischen Technik by Max Pollermann (1955).
Prinzip eines Messtasters fur die automatische schnelle Abtastung raumlicher Konturen mittels Koordinaten-Messmaschinen from Industrie-Anzeiger (1975, pp. 1404-1408).
Frankfort Charles E.
Johannes Heidenhain GmbH
Scanlon Patrick R.
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