Temperature evaluation under curved-edge tool cutting

A theoretical model for determining temperature on the working surfaces of the tool with the blade shaped profile is considered. Analytical dependences for estimating the thermal state of the blade front face (tooth cutter) with an elliptical profile in normal sections are obtained. The resulting equations include the effect of thermophysical constants of the tool material and workpiece, heat transfer conditions, deformation characteristics of the cut layer, cutting modes, and tool geometry (under turning and milling)on temperature. The obtained numerical results for the temperature of the HM tool (T15K6) and HSS tool (R6M5) match the test data; they can be applied to predict the wear rate and service durability of shaped tools including blades, side and hob cutters.