US 4,228,781 AGranted

Tramming fixture for positioning a dressing wheel

AssigneeBarber-Colman Company

InventorEdward W. Haug

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Abstract

A tramming fixture and method for accurately tramming in, or positioning, a dressing wheel with respect to a dressing axis of a dressing machine so that all points on the surface of the dressing wheel which contact the workpiece during dressing are equi-distant from such dressing machine axis. In accordance with this invention, the tramming fixture provides a mechanism for obtaining a measurement representative of the distance between a reference line and the point of dressing contact on the peripheral surface of the dressing wheel. By tilting or rotating the dressing wheel about the dressing axis through predetermined angles, taking corresponding distance measurements, and comparing the measurements, a determination can be made of the appropriate position adjustment required to properly locate the dressing wheel.

Claims14

Dependent claims

A tramming fixture for use in accurately positioning a dressing wheel in a dressing wheel fixture of a grinding wheel dressing machine such that the center of the transverse radius of the circumferential apex of the dressing wheel at the point of dressing contact lies on a dressing axis about which the dressing wheel may be rotated by the dressing wheel fixture, said dressing axis being maintained a predetermined distance from the grinding wheel surface being dressed, said tramming fixture comprising:

a fixed support base;
a lever mounted on said base by rotation about an axis of said lever, said axis being fixed with respect to said base;
means for selectively adjusting the position of said lever through rotational movement of the lever;
means for indicating the rotational movement of said lever;
and a contact surface means associated with said lever and displaced from said lever axis to contact said dressing wheel at a point on said apex when moved towards said dressing wheel through movement of said lever by said adjusting means, whereby said indicating means provides a reading indicative of relative dressing wheel position.

2 more elements

Dependencies are inferred from the claim text.