Modal Analysis of a Biglide parallel Grinder for Helical Drill Point Machines System Based on ANSYS

The ensemble static stiffness of machine tool is ability of machine tool to resist permanent load,which is one important performance index of machine tool.The parallel kinematic machine tool has broad application prospects in the manufacturing industry due to their closed loop structure,good accuracy,good rigidity,and various configurations.But in fact strengthening rigidity of PKM has been a very difficult problem and it will directly influence the PKM's working accuracy,stability and reliability.The finite element software can analyze the PKM rigidity accurately,and can revise design defects very fast and reduce the design cost.Three dimensional software PRO/E is used to carry out entity model and the assembly of PKM inducted into the ANSYS software seamlessly.Through model simplification and equivalent simulation of two parallel machine tool finite element model is established and rigidity of the whole machine is analysed.