GRINDING HEAD Russian patent published in 2000 - IPC

FIELD: metal working. SUBSTANCE: grinding head is provided with at least two cup grinding wheels positioned uniformly over circumference and mounted on radially-axial supports. Upper grinding wheel is provided with circular groove for arrangement of V-belt. Upper grinding wheel is coupled with grinding wheels located below through carriers shaped as pins. One end of every pin is fixed on driven wheels, and other is inserted in radial recesses of driving grinding wheels. Radially-axial supports are mounted on a spindle. Composite spindle consists of members with base necks used for installation of supports. One of adjacent conjugated members in every pair is provided with tapered tail-piece positioned eccentrically, and other has eccentric tapered hole. All members are clamped by a bolt. Cutting edges of grinding wheels are positioned equidistantly from each other in axial direction. When machining of operating surfaces of arched toothed gears distance between extreme cutting edges is determined by calculation. It depends on module of wheel being machined and on number of grinding wheels in head. Axes of rotation of neighboring wheels are shifted relative to each other by equal eccentrically value which depends on module of wheel being machined, number of grinding wheels in head and on machine engagement angle when grinding of arched teeth. Grinding head ensures improvement of finishing machining quality due to increase in number of simultaneously operating cutting edges and extension of production capabilities by changing of profile angle α*г