Drop Impact Simulation Of The Cutting Tools Based On CAE

Powerful tool is one kind of tool that uses electric to offer inputing force or torque,it's used in a lot of industries,such as digital production,rockets and so on.And because of it's light weight and big torque offered,the necessary and importance of powerful tool is high in all different kinds of area's appliance.So a lot of people and companies have the requirement for powerful tool,they hope the production they have has good quality.So for the production of powerful tool,we need to increase the quality and reliability.And Drop impact is one of the main factors leading to the mechanism failure of electric tools.For those individualized electric tools with complex structure composition and diverse materials,traditional method of designing and testing prototypes is time-consuming and costly.Therefore a new prediction method for the drop impact response of electric tools is urgently needed.This paper chose some grand electric tools as the main research objects,and conducted thorough research on their dynamic cushioning property and structural optimization based on the impact theory and the finite element theory.It includes:(1)Using CATIA and Hyperworks to build 3D model and simulate the drop process for one cutting tool.Based on certain dropping angle and height,doing the dropping simulation.Getting the key area's force and deformation,and predicting the result of dropping;(2)Design the experiment,record the data of dropping and actual dropping result,using these things to compare with the data and result in Dropping simulation,to confirm the simulation's accuracy;(3)Based on the failure of Circular saw's actual dropping test,using the CAE to replay the failure and find the root cause(weak point)of the part.Then acrroding to this project's situation,coming up with some idea to solve the problem.Using CAE to silumate these solution,and compare the data the result of different design's simulation.From the comparation,choosing the best solution,Apply it to actual production,then do the actual test to confirm it.This paper confirm that,CAE simulation has good accuracy in dropping process data and result by calculation and experiment.And in project,it would help people to analysis and choose the best solution.