METHOD FOR WORKING NON-ROUND SURFACES AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 2003 - IPC

FIELD: working materials by cutting, working non-round shafts and openings. SUBSTANCE: method comprises steps of imparting to part and to tool mechanism (providing motion along predetermined path) mutual movement of cutting and feed; changing with use of follower first and second derivatives of function determining motion path of tool; in order to enhance accuracy and to reduce roughness of surfaces worked by means of simplified mechanisms, realizing working in point in which first derivative of function defining motion of mass center of tool mechanism has discontinuity, moving tool mechanism at lowered angular velocity until stop position and then at drawing away from said point, moving tool mechanism with increased angular velocity whose value is determined by cutting properties of tool material. Apparatus for performing the method includes carrier rotatably mounted in housing and having eccentric portion supporting internal gear wheel engaging with gear wheel rigidly joined with driven shaft and mounted on slide with possibility of rotation around axle mounted in turning of slide in parallel relative to central axis of said internal gear wheel and arranged radially in zone of diameter equal to diameter of its pitch circle. Slide is mounted in housing with possibility of radial motion relative to rotation axis of carrier. EFFECT: enhanced accuracy, reduced roughness of worked surface, simplified design of tool mechanisms. 2 cl, 6 dwg