Geometrical instruments – Gauge – With calibration device or gauge for nuclear reactor element
Patent
1989-07-13
1990-06-12
Will, Thomas B.
Geometrical instruments
Gauge
With calibration device or gauge for nuclear reactor element
33567, 73 1J, G01C 2500
Patent
active
049321366
ABSTRACT:
A tester for use in testing coordinate measuring devices includes a hub having a generally tubular body portion, an outer ring, and a plurality of spokes connected to the hub and to the outer ring, each of the spokes having a generally tubular body portion and extending radially from the hub. A plurality of holders are connected to respective ones of the plurality of spokes, and elements respectively supported by the holders are provided which are adapted for use in testing the coordinates of a measuring device. The generally tubular body portion of the hub and the generally tubular body portion of each of the spokes is composed of a bonded fiber material in which layers of circumferential windings alternate with layers of helical windings, and wherein the helical windings are wound of a fiber which has a negative coefficient of thermal expansion. The holders and the elements respectively supported by the holders are composed of a relatively hard material which has a small positive coefficient of thermal expansion.
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Weckenmann, "Kenngrossen fur die Angabe der Genauigkeit von Koordinatenmessgeraten" (Characteristic Parameters for Describing the Accurancy of Coordinate Measuring Machines), Technisches Messen 50, 1983, vol. 5, pp. 179-184.
Neumann, "Genauigkeitsangaben zu Drehtischen und Besonderheiten ihrer Anwendung auf Koordinaten-Messgeraten", VDI-Berichte 529, VDI-Verlag GmbH 1984, pp. 1-19.
Corr Horst
Hackenberg Rudolf
Jesch Joachim
Schmitz Bernd-Horst
Uranit GmbH
Will Thomas B.
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