Cutting Force Experiment And Simulation Of SiCp/Al Composite Thin-walled Parts

SiCp/Al composite thin-walled parts havetheexcellent characteristicsoflightweight,high specific stiffness and specific modulus, good wear resistance, lowcoefficient of thermal expansion and etc. They have been widely used in the automotive,electronics, weapons, aerospace and other fields.Howeverthin-walled partsare poorrigidity,large yield ratioand in machining cutting force and cutting heat generated easilylead to the deformation of thin-walled parts. Especially deformation characteristics andmechanisms of SiCp/Al composite in machining are different from a single metalmaterial,so it is necessary to have a depth study of the cutting with SiCp/Al compositethin-walled parts.In this paper, finite element simulation and experiments are used to study thecutting force and deformation of high-speed millingSiCp/Al composite thin-walledparts,the main contents and conclusions are as follows:（1）Through thefinite element analysis softwareABAQUS to cutting forceofmilling on SiCp/Al composite thin-walled parts is analyzed. The results showed that:with theincrease of radial cutting depth,axial cutting depth and feed per tooth, themilling force is also increased;with the increase of cutting speed, it is first increasedandthendecreased;the influence of rake angle of milling cutter to cutting force is mostobvious and the influence of the tool cutting edge inclination angle is smaller.（2）The deformation of SiCp/Al compositethin-walled parts has been simulatedand analyzed. The results showed that:the deformation of thin-walled parts on both endsis greater than on the middle section;with the increase of radial cutting depth,axialcutting depth and feed per tooth, the deformation is also increased; with the increase ofcutting speed, the deformation is essentially the same; the influence of wall thickness on the deformation is the most significant, the influence of the length and the height is also.（3） Single factor experiment methodis used on the high-speed millingexperiments of SiCp/Al composite thin-walled parts. The results showedthat:conventional milling forceisgreater than climb milling;cutting speed,radial cuttingdepth, feed per toothon the influence law of cutting forceis consistent with thesimulation research, that prove the finite element analysis is correct.