Cutting force prediction in ball-end milling of NiTi alloy

This paper presents a statistical model for prediction cutting components force in the ball-end milling of NiTi shape memory alloy (Nitinol). In experiment a ball-end mill (EB-A2 03-04C06E48) was used and a dynamometer Kistler was used for the measurement of cutting forces components. The research trials were conducted for two independent parameters (v(c), f(z),) affecting the cutting force in milling process. The choice of parameter configurations was performed by factorial design methods using orthogonal plan type L9, with two control factors, changing on three levels, developed by G. Taguchi. The model for the mathematical prediction of cutting force was developed in terms of feed per tooth and cutting speed. The computational model enabled to select optimal machining parameters for minimizing cutting forces values.