Geometrical instruments – Gauge – Collocating
Patent
1990-09-26
1991-09-10
Cuchlinski, Jr., William A.
Geometrical instruments
Gauge
Collocating
33645, 33639, 33626, 33DIG1, G01B 525
Patent
active
050462628
ABSTRACT:
A corner locator for aligning machine tools comprises a metal sphere with a section removed. The section has the shape of either a right angled corner, which is bounded by three mutually perpendicular planes, or a wedge bounded by two intersecting planes. The three-plane version in use fits onto a corner of a rectangular workpiece, and the two-plane version in use fits onto an edge. In either case all planes bounding the removed sections pass through the exact center of the sphere. With the locator in place, the spindle of the machine tool may be set at any angle whatsoever relative to the faces of the workpiece, and the machine tool spindle axis aligned to pass through the center of the sphere as follows: insert a dial indicator gauge into the spindle; bring the gauge arm into contact with the sphere; rotate the spindle while moving the spindle along the machine axes to locate the point of minimum runout. At this point the spindle axis points directly toward the center. Knowing the radius of the sphere, the machinist now knows the spindle position (relative to the corner or edge) with a precision limited only by the precision of the locator and micrometer. The spindle may then be moved to any point, whose location can be specified relative to the edge or corner, with accuracy now limited only by the precision of the machine tool motions.
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Cuchlinski Jr. William A.
Dowling William C.
Litman Richard C.
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