Tool radius compensation method of CNC

摘要

In a method of calculating the passage of a tool according to a tool radius used in machining a workpiece in a CNC machine tool, the coordinate value of the first block (X_s, Y_s) And the coordinate values (X_s, Y_s) To the vector R including the tool radius " R "_OneAnd R₂From R_OneN_OneThe vector and n_OneTo translate n_One'Vector and then the coordinate value of the second block (X_s, Y_s) And the coordinate value of the third block (X_f, Y_f) To R₂After obtaining the vector, R₂Vector n₂And n_OneVector and n₂Find the intersection of vector₃After obtaining the vector (X_s, Y_s) (n_One'x, n_One'y) (n₃x, n₃y) (n₂x, n₂The tool radius compensation method of the CNC has the feature that the tool path can be calculated according to the tool radius so that the tool can be moved by linear interpolation along the y-axis.