MACHINE FOR MACHINING SLOTS IN PART HOLE Russian patent published in 1997 - IPC

FIELD: mechanical engineering, in particular, grinding machines intended for machining of longitudinal slots in bushing holes of automobile control valves of steering control. SUBSTANCE: machine has work spindle designed for fastening of workpiece for turning, and tool-carrying spindle located in spindle head for radial feed and series of working and idle strokes including angular reciprocations. Attached to spindle cantilevered holder is slotting tool. Spindle head is installed in cutting box for angular oscillations round axis which is parallel to axis of turning of cutting spindle and displaced relative to it by means of connecting member engageable with driving shaft located in cutting box. In this case, machine has means providing for cyclic unloading of tool in each its stroke and connected to spindle head and paired cam mechanism designed for control of angular oscillations of spindle head and two member for moving of cutting box to axis of clamping spindle for realization of radial feed to preset depth and subsequent motion from indicated above axis after machining of each slot. EFFECT: higher efficiency. 8 cl, 11 dwg