Analisys of the conditions of a magneto-abrasive polishing of endmills of hard alloys during their positioning in ring-type working areas
The following paper shows the results of mathematical calculations of speed components of points on the tool surfaces of endmills, during their magneto-abrasive machining in the ring-type working area. The rotation speed of an endmill around the axis of ring bath influences the intensity of the preparation dramatically. At the same time axial rotation of a tool serves for the immixture of the polishing powder in the contact zone. The most suitable preparation conditions for the chip flute are reached during the magneto-abrasive machining in the drilling direction with the tilt angle from about p=30-60˚. Clearance surface of periphery cutting edges of the endmill is being efficiently polished during its machining in both directions and independent from the degree of a tilt angle. Clearance surface of the end cutting edge can be effectively polished only during the tool movement in the drilling direction, tilt angle should be chosen as p>10˚.