Methods of and device for measuring the curvature of an object

Details Methods of and device for measuring the curvature of an object Methods of and device for measuring the curvature of an object

1994-12-22

1996-05-14

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

With support for gauged article

33 1M, 33508, 33549, 33559, G01B 520

Patent

active

055156150

ABSTRACT:
A device 22 for measuring the curvature of an object, such as a tapered shaft 24, includes a support plate 26 and a clamping mechanism 32 for supporting the shaft at one end 34 thereof a holding mechanism 60 retains an opposite end 78 of shaft 24 in a position such that the shaft is in a curved state. The curved state of shaft 24 can be attained by physically moving holding mechanism 60 or by placing a weight 80 on the mechanism. A first transducer 82 includes a slide 88 which is movable along a guide bar 86. A second transducer 98 includes slide 102 which is movable along a guide bar 100. Guide bar 100 is connected to slide 88 for movement therewith. A locator mechanism 114 is mounted on slide 102 for movement therewith and includes a pair of spaced pulleys 144 and 146 biasingly urged against opposite sides of shaft 24 and toward the axis thereof. Pulleys 144 and 146 are moved along the length of shaft 24 from end 34 to end 78 and transducers 82 and 98 develop voltage levels representative of incremental points along the shaft in the form of "X" and "Y" coordinates of an X--Y coordinate system. The voltage levels are processed into a data format representative of the curvature of shaft 24 for display of the curvature in a visual and/or printed format.

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