| 摘要 |
PROBLEM TO BE SOLVED: To provide a grinding device enabling a worker to automatically position a cutting-in start point of a grinding wheel without confirming the position of the grinding wheel. SOLUTION: This grinding device receives an electric signal outputted from a contact detection means and recognizes a grinding wheel position where the grinding wheel comes into contact with a workpiece as the cutting-in start point position of the grinding wheel by a table 4, the disclike grinding wheel 3 grinding the workpiece, a non-contact detection means 300 provided in the vicinity of the grinding wheel and outputting an electric signal corresponding to a distance between the grinding wheel and the workpiece, an instruction means sensing the agreement of an electric signal Ei outputted from the non- contact detection means with a reference signal value Eo and giving an instruction for changing a grinding wheel step feed rate to a workpiece surface, and the contact detection means 21 for detecting the contact of the grinding wheel with the workpiece.
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