FIELD: material working, namely manufacture of parts in number program controlled machine tools. SUBSTANCE: method comprises steps of imparting to axis of rotating tool complex motion from point to point along portions approximated by curve lines formed by summing simple program-controlled displacements; imparting to axis of tool additional rotations around two axes parallel relative to axis of tool; imparting to axis of tool circular turning around second axis performing circular turning relative to third axis. Radius values of both circles are constant and equal one to another. EFFECT: possibility for reducing quantity of inlet data at the same allowable approximation error, enhanced accuracy of working parts with curvilinear surfaces. 3 dwg
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