MACHINE FOR CUTTING GEAR WHEELS Russian patent published in 1997 - IPC

FIELD: gear cutting, mainly cutting curvilinear along their length teeth of cylindrical gear wheels having outer and internal teeth at condition of generating. SUBSTANCE: machine tool includes spindle for gear cutter mounted with possibility of rotation by drive units for circular discrete feed, reciprocation motion and rocking motion respectively; strut connected with housing; table mounted on guides of housing with possibility of rectilinear motion in parallel with axis of gear cutter rocking motion and designed for placing gear wheel being cut with possibility of rotation by drive unit for circular discrete feed; and system for program control of spindle of gear cutter and table. Machine tool is provided with cross piece arranged on vertical guides of strut and moved by drive mechanism. Said cross piece has horizontal guides supporting car having drive unit for lengthwise motion and rotary rest mounted is said car. Spindle for gear cutter is built in rotary rest connected with drive unit for rocking motion. System for program control of machine tool includes primary converter of pulses of motion of car and rotary rest respectively mounted on said cross piece and car. Rocking motion drive unit is in the form of drive pinion mounted on car and joined with toothed rim mounted on rotary rest. EFFECT: enlarged possibility of machine tool due to cutting outer and also internal teeth of any configuration at constant values of cutting angles for all stroke of gear cutter. 2 cl, 4 dwg