| 摘要 |
In a digitally controlled grinding machine for working a workpiece including at least one cylindrical portion and at least one tapered portion, there are provided a first grinding wheel supported on a first grinding wheel carriage for working the cylindrical portion and a second grinding wheel supported on a second grinding wheel carriage for working the tapered portion. When the tapered portion of the workpiece is to be ground, a work table for supporting the workpiece and the second carriage are fed in directions perpendicular with each other. The work table and the first and second grinding wheel carriage, are operated by servo-motors responsive to digital command signals prepared by informations stored in a memory.
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