Numerical Deflections Analysis of Variable Low Stiffness of Thin-Walled Parts During Milling

The milling of parts with variable low stiffness requires consideration of a number of factors that are an obstacle to achieving technological requirements for the product. One of the most important factors of geometrical deviations in the milling process is the elastic deformation of the thin-walled parts. The review of prevention methods of undesirable deviations occurrence in the machining process of the variable stiffness parts is made. A detailed preliminary analysis with the help of engineering automation is proposed as a technological solution for the milling of thin-walled parts with a complex geometry. The forces that occurs during the material removal are calculated, directional force that acts on the face surface of the thin-walled element is defined. The dynamic process of material removing is modeled. The critical points of the thin-walled variable sample in deflections model are defined. The forces in the removal zone have been processed and included in the deflections model. Comparison between oscillation amplitudes in the process of conventional and high speed machining is made.