Mathematics model of beryllium copper alloy turning and milling roughness Using the orthogonal test method, the contour cutting test of the copper-coated C17200 specimen was designed and implemented, and the roughness mathematical model of the spherical milling cutter under the contour cutting mode was constructed by using the exponential function. Based on the orthogonal cutting test data, the mathematical model of surface roughness of copper plating C17200 was deduced and solved by using MATALB software. Comparing the calculated roughness theoretical value with the actual measured value obtained by the test, the results show that the error of the roughness mathematical model can be controlled at about 10%, which has a Read more