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Disclosed is a numerically controlled grinding machine for grinding a tapered surface of a workpiece. In the grinding machine, a workpiece having a tapered portion and a reference end surface is supported on a traverse table in such a way that the workpiece is rotatable about an axis intersecting th

Disclosed is a numerically controlled grinding machine for grinding a tapered surface of a workpiece. In the grinding machine, a workpiece having a tapered portion and a reference end surface is supported on a traverse table in such a way that the workpiece is rotatable about an axis intersecting the Z-axis at a predetermined angle, which is equal to an angle formed between the tapered surface and the rotational axis of the workpiece. In addition, a measuring device for measuring the position of the reference surface is mounted on the wheel head.

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A numerically controlled grinding machine for grinding a tapered surface of a workpiece, which comprises: a bed; a table mounted on said bed; a swivel table mounted on said table for swiveling movement about a substantially vertical axis; a wheel head mounted on said bed; a first moving mechanism fo

A numerically controlled grinding machine for grinding a tapered surface of a workpiece, which comprises: a bed; a table mounted on said bed; a swivel table mounted on said table for swiveling movement about a substantially vertical axis; a wheel head mounted on said bed; a first moving mechanism for changing positional relationship in an X-axis direction between said wheel head and said table; a second moving mechanism for changing positional relationship in an Z-axis direction between said wheel head and said table; workpiece supporting means mounted on said swivel table for selectively supporting a master workpiece having a tapered surface and a workpiece having a tapered surface to be ground in order to rotate said master workpiece and workpiece, said swivel table being located at a predetermined machining angle position so that the rotational axis of said workpiece inclines with respect to the Z-axis direction by a predetermined angle which is equal to an angle formed between the tapered surface and the rotational axis of said master workpiece; means for feeding said wheel head from a predetermined machining original position along the X-axis direction by a predetermined feed amount so as to grind said tapered surface of said workpiece under the state that said swivel table is located at said predetermined machining angle position;