Method for grinding small rotary cutting tools by a grinding machine

Abstract

A method for machining small rotary cutting tools by a grinding machine, comprising: a) mounting a workpiece in a spindle of the grinding machine; b) machining a calibration portion of the workpiece by performing one or a plurality of marks on said workpiece with one abrasive wheel or with a corresponding plurality of abrasive wheels of different shapes, wherein said one mark or each mark comprises at least one geometrical feature and two position features corresponding respectively to a geometrical feature and to 3D coordinates of the corresponding abrasive wheel, in a X-Y-Z coordinate system of the grinding machine, that has ground the corresponding mark c) performing measurements of said at least one geometrical feature and said two position features of said one mark or each mark of the calibration portion d) generating a sequence of instructions based on said at least one geometrical feature and on said two position features of said one mark or each mark as measured under step c) to grind said workpiece to the final and desired shape of the cutting tool and e) controlling the 3D coordinates of said one or more abrasive wheels in said X-Y Z coordinate system during grinding operations on the workpiece or on another workpiece according to said sequence of instructions to obtain said cutting tool.

Dependencies are inferred from the claim text.