Importance

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Abstract

A gaging head assembly for use on dial bore gages and the like for gaging the diameter and surface characteristics of cylindrical work surfaces including an elongated tubular member having first and second end portions and an opening extending therethrough, an adjustment member positioned for axial movement in the opening, the tubular member being attachable at the first end portion to a dial bore gage and having pairs of opposed work engaging elements adjacent to the second end portion for movement primarily in a radial direction to change the gaging diameter thereof, the adjustment member having a tapered end portion located inwardly of the work engaging elements to simultaneously engage and radially move the pairs of opposed work engaging elements during axial movements thereof, one of the pairs of opposed work gaging elements extending radially outwardly a greater distance than the other pair of opposed elements in all positions of adjustment of the adjustment member. In a preferred embodiment of the present invention, the work engaging elements include work engaging ball-like elements, and in another embodiment the elements are formed as integral parts of the tubular member between axially extending slots which extend into the tubular member from the second end portion thereof.

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First Claim