Heads for gaging devices and fixture for setting same

A head for an in process gaging device comprising integral tube and gaging portions, said tube portion having opposite ends one of which is connected integrally to the gaging portion, said tube portion having internal threads over a portion of the length thereof and extending to adjacent the end thereof opposite from the gaging portion, at least two axially extending grooves dividing the gaging portion and the adjacent end of the tube portion into at least four adjacent segments capable of being deflected radially with respect to the tube portion, each segment having a peripheral flange, means forming an annular segmented adjustment edge in the tube portion inwardly of the gaging portion, and an adjustment member having a first portion and an axially tapered second portion thereon cooperatively engageable in surface-to-edge contact with the segmented adjustment edge in the tube portion whereby axial movements of the adjustment member when rotated axially displaces the tapered second portion of the adjustment member and effects changes in the gaging diameter.

A head for an in process gaging device comprising integral first and second head portions, said first portion including means for mounting the gaging head on an in process gaging instrument and said second portion including at least three segments attached to the first portion, each segment being capable of being deflected radially, with respect to the first portion each segment having an outwardly facing work engaging surface formed thereon, means to simultaneously radially reposition the segments to change the gaging diameter of the head, said last named means including a cavity formed inwardly of the work engaging surfaces on the segments, said cavity having an annular inwardly facing segmented tapered surface formed thereon, an adjustment member having a peripheral thereon for cooperatively engaging the inwardly facing segmented annular tapered surface edge-to-surface contact, and means including threaded means to adjust the axial position of the adjustment member to radially reposition the segments.

A fixture for presetting gaging heads having a tubular portion and a gaging portion integral with one end of the tubular portion comprising a base member having first means thereon for mounting a gaging head to be preset, and second means spaced from the first means, a micrometer means having first and second relatively movable portions, said first portion being axially movable relative to the second portion when the second portion is rotated, said second means including means for mounting the micrometer means thereon, said first and second relatively movable micrometer members having cooperatively engageable scales to indicate the position of the first member relative to the mounting means for the gaging head in each position of the second micrometer means, means to lock the gaging head in position on the fixture includes a pair of spaced and angularly related gage head locating surfaces engaged by a gaging head to be preset, and an adjustable locking member located on the fixture base member and movable thereon against the gaging head in a direction to move the gage head against the angularly related locating surfaces and to maintain the gaging head engaged therewith.