Multi Point Cutting Tool

A cutting tool which has more than one cutting edge is multi point cutting tool. Generally Multi point cutting tools are used while performing drilling, broaching, milling, grinding etc. Important elements are helix angle, cutting edge, the number of teeth. The cutting edge is the only element that comes in direct contact with the work. The axial angle corresponds to side rake angle in single point tool and similar angle regarding to the cutting axis, that means the radial angle is same as the back rake angle.

In case of straight tooth milling cutter, a sudden change in tooth load take place when the chip drops off as the tooth leaves the work. This kind of force formation is responsible for chatter formation. Much smoother operation is obtained while more than one tooth cut at the same time. This happens specifically when the cutting edge length is slowly changing as in helical cutters.