Structural characteristics of staggered tooth three sided milling cutters in precision parts machining

The structural characteristics of circular tooth slots and cutter teeth in precision part machining are shown in the figure for the distribution of circular tooth slots in staggered three sided milling cutters

The grooves on its circumference are spiral shaped and have two directions of rotation, staggered intervals, and half of the grooves are right-handed and the other half are left-handed. The main cutting edge, rake face, and rake face teeth with a certain angle are formed by the polygonal tooth back and the tooth groove space that accommodates the chips. Its blade teeth can also be divided into right-hand and left-hand, with left-hand and right-hand blade teeth arranged in a staggered manner above the circumference.

The structural characteristics of the end face groove and cutter teeth are staggered teeth. The distribution structure of the end face groove of a three sided milling cutter is characterized by the difference between left and right rotation of the circumferential groove. Therefore, on the same end face, half of the end face cutting edge is a positive rake angle, and the other half is a negative rake angle end face cutting edge.

The staggered tooth three sided milling cutter retains the positive rake angle end cutting edge and cancels the negative rake angle end cutting edge. Make it concave into the two end faces, thus forming a staggered three sided milling cutter with evenly distributed tooth slots and cutting teeth at both ends. In the process of precision parts processing, make the cutting edges at both ends have good cutting ability and spacious chip holding slots.