Abstract

This paper describes the simulation analysis of 3-dimensional cutting processes with chip breaker. The simulation method is based on dynamic-explicit elastic-plastic finite element method (FEM) and heat transfer FEM using forward Euler scheme, which are suitable for an FE model including a large number of nodes such as 3-dimensional problem. First, the turning processes with flat rake face tools have been simulated for the basic investigation into the effects of rake angle. In the results, the radius of chip up-curl, cutting force and temperature decrease, while the radius of chip side-curl increases with increasing rake angle. Secondly, the cutting process with the groove tool has been simulated. The results make it clear that the groove on the rake face decreases the cutting force and temperature, and it improves the machinability. In addition, the simulation results with changing the primary land width indicate that the difference of tool contact area with chip greatly influences the 3-dimensional chip shape.

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