To study the cutting forces and the carbide tip’s surface temperatures of stainless steel (SUS 304) with a chamfered main cutting edge nose radius worn tools. A new cutting temperature model incorporating tool worn factor and using the variations of shear and friction plane areas occurring in tool worn situations are presented in this paper. The heat partition factor between the tip and chip is solved by using g the inverse heat transfer analysis, which utilizes temperature on the carbide tip’s surface measured by infrared as the input. The tip’s carbide surface temperature is determined by finite element analysis (FEA) and compared with temperatures obtained from experimental measurements; good agreement demonstrates the proposed model.

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