Predictive Simulation Of Milling Force Of Complex Surface Machining Based On ACIS

With the advent of the intelligent manufacturing industry 4.0 era,the virtual numerical control simulation technology has developed rapidly.In the field of intelligent manufacturing and processing,complex curved parts such as integral impeller blades have poor cutting performance due to their large material removal rate,thin blades,and long leaf lengths,which are prone to deformation,chatter,and resonance..In the actual processing of such parts,due to the unknown cutting physical quantity during the processing,it is easy to cause waste of cutting materials and manpower.Therefore,in view of the characteristics of the milling process of such parts,it is the focus and difficulty of today’s manufacturing technology research to construct a virtual numerical control milling simulation system to achieve efficient and high-precision machining.Aiming at the existing NC simulation software,it lacks the simulation of the physical quantity in the milling process.This article is based on numerical control simulation technology,using C++ programming language,modular design and HOOPS/ACIS 3D application framework to issue a simulation software,which is used for feed speed optimization.In this regard,this article has the following research:(1)Through the mutual conversion of the tool coordinate system to the parameter coordinate system,the expression of the tool surface parameter space is given,and the surface contour line of the milling tool is generated according to the envelope theory calculation,and finally the tool scanning body is constructed in combination with ACIS.The material removal rate is calculated by the local tool scanning volume.Finally,the feed rate is optimized based on the material removal rate.(2)Extract the boundary of CWE by means of ACIS solid structure crossgraph,and calculate the cutting force based on the linear cutting force model and the slice division of the meshing area.Finally,based on the calculated milling force,the feed rate is optimized.(3)Based on the above CNC simulation technology and solid modeling technology,this paper develops a virtual CNC simulation software for multi-axis machining of complex surfaces using the C++ language and modular design using the ACIS/HOOPS 3D application framework.(4)Finally,a simulation experiment was conducted with the turbine blade as the object,the distribution of material removal rate and milling prediction force during the milling process was analyzed,and the feed rate was optimized based on these two methods.