The Design And Optimization On The Virtual Prototyping Of Helical Milling

There are a large number of holes on titanium alloy and composite materials to be machined during the aircraft assembly process, and some Titanium alloy and composite materials are connected integratedly and then assembled by rivets or bolts. Helical milling is increasingly popular manufacturing holes technology towards difficult-to-cut material, such as titanium and composite materials. This paper , based on virtual prototyping technology , does some researches on the helical milling machine.Based on deep comprehension of the fundamental theory of helical milling and guided by the theory of helical milling cutting discipline, this paper researches the concept design, principle design and structure design of helical milling. And based on the profound understanding of the helical milling motion characteristics, this paper puts forward the structure to accomplish helical milling process and conducts functional decomposition..The paper, based on the feasibility analysis toward the structure proposed, has finished the 3D Solid Modeling. The loadings tested could be viewed as the reference for static Finite element analysis and dynamic finite element analysis. And based on the loadings tested the overall and the key components of the virtual prototyping are analysed and verified in terms of stress. The Modal Analysis and Harmonic response analysis of the key components are discussed, offering a operating parameters range among which could avoid resonance together with operating parameters. Based on results of static analysis, dynamic analysis and simulation analysis, necessary modifications are made to the original model to optimize the performance; and virtual assembly of the optimized model verfies assemebly of product and correctness of assembly design and operations.The paper deeply conducts some research on helical milling virtual prototype and provides Finite element verification for overall prototype and key components, which offers essential theory support for subsequent physical prototype manufacturing.