FIELD: process engineering.
SUBSTANCE: method relates to drill rake grinding and comprises positioning the drill so that its cutting edge is located perpendicular to grinder rotational axis to grind the drill by displacing it relative to grinding tool along cutting edge, starting from its periphery. To condition drill wear along cutting edge by distribution of normal face angles at drill positioning drill cutting edge is located at the distance equal to 0.01-0.45 of drill diameter. Drill axis is set at the angle to grinding tool rotational axis to be defined from cited relationship. Note here that grinding is performed by coordinated drill turn around its cutting edge, drill displacement along cutting edge over its entire length and drill displacement along grinding tool rotational axis. Note also that drill cutting edge is placed at termination of grinding at the distance equal to 0.01-0.45 of drill diameter. Direct profile grinding wheel is used as grinding tool.
EFFECT: surfacing of drill wear along cutting edge.
7 dwg, 1 tbl
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