Measuring head for screw thread measuring machines

Details Measuring head for screw thread measuring machines Measuring head for screw thread measuring machines

1983-06-08

1985-06-11

Martin, Jr., William D.

Geometrical instruments

Gauge

Screw thread

33201, G01B 516

Patent

active

045219710

ABSTRACT:
A measuring head for screw thread measuring machines which is capable of measuring threads of a piece to be measured which has an outer diameter with a measuring point and which may be of varied diameters within predetermined limits comprises a base plate which has a thruhole in its center, a plurality of straight support grooves. Feelers are arranged at spaced angular locations around the periphery of the hole and a centering disc is located within the hole as well as measuring elements which are similarly offset and clamping elements which are arranged at selected angular locations to engage the centering disc. The feelers and the measuring elements are carried in a measuring station which is movable along a groove which extends parallel to a straight line which intersects a measuring point on the diameter of the piece to be measured and the lowermost point of the piece at the location in which it intersects the vertical axis.

REFERENCES:
patent: 2634508 (1953-04-01), Stainton
patent: 2803066 (1957-08-01), Praeg
patent: 3052035 (1962-09-01), Shuster
patent: 3504441 (1970-04-01), Linley et al.

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