Patent ID: 7997954
Filing Date: 2011-08-16
Classification: B24B

Abstract:
1. A centerless grinding method in which Y and X axes, which are perpendicular to each other in a plane perpendicular to a rotational axis of a workpiece, are designated first and second straight lines, respectively, the method comprising: disposing a blade that is slidable along said first straight line; disposing a grinding wheel that is slidable along said second straight line; and disposing a regulating wheel that is slidable along a third straight line intersecting with said second straight line at an angle θ wherein at a tooling change, said blade moves in a negative direction of said Y axis with an increase in diameter of said workpiece, said grinding wheel moves in a negative direction of said X axis with an increase in diameter of said workpiece, said regulating wheel moves in a positive direction of said Y axis and also in a positive direction of said X axis with an increase in diameter of said workpiece, whereby when contacts of said workpiece with said blade and said regulating wheel are designated contacts B and R, respectively, a center of said workpiece is designated center O, and a line passing through said center O and extending parallel with said Y axis is designated contact angular position reference line S, said tooling change along with a change in diameter of said workpiece is performed such that angles α and β of said contact angular position reference line S with line segments OB and OR are always constant (α, β<180 degrees).