GRINDING MACHINE

摘要

Provided is a grinding machine that does not require work for replacing an upper roller (12) and a lower roller (14) and that ensures interchangeability thereof, even when the outer diameter of a workpiece (W) and the inclination state of the generating line of the workpiece (W) are different. A headstock (7) of the grinding machine comprises an upper-roller device (13) on which the upper roller (12) is rotatably supported, and a lower-roller device (15) on which the lower roller (14) is rotatably supported. The upper-roller device (13) and the lower-roller device (15) are provided with vertical position adjustment mechanisms (22), (46), respectively, for modifying the height position related to the vertical direction thereof, and a turn angle adjustment mechanism (21) for modifying the inclination angles of the upper-roller device (13) and the lower-roller device (15) with respect to the horizontal direction of the center axes thereof.

主权项

1. A grinding machine for performing a grinding process on a circumferential surface or end surface of a workpiece, the circumferential surface of the workpiece having a circular cross sectional shape;
the grinding machine comprising: an upper roller and lower roller rotating in a same direction as each other in a state that the upper roller and the lower roller support the workpiece from both upper and lower sides, to rotate the workpiece; and a shoe positioned in a vertical direction between the upper roller and the lower roller, having a tip-end surfaced, and supporting the workpiece from a lateral side by abutting the tip-end surface against the outer-circumferential surface of the workpiece; wherein the grinding machine further comprises: a vertical position adjustment mechanism for respectively changing a height position in the vertical direction of both the upper roller and the lower roller; and an angle adjustment mechanism for respectively changing an inclination angle with respect to a horizontal direction of center axes of both the upper roller and the lower roller.