Finite Element Analysis, Based On The Deform-3d Micro-hole Axial Vibration Drilling

With the rapid development of the mechinery industry,mechanical machining accuracy requires further development,and precision machining technology also becomes increasingly important.As a significant part of the precision machining technology,precision machining of hole has an important position in machining process,meanwhile,the demand for holes,especially the tiny holes is becoming increasingly high in drilling process and technology.At prsent,the drilling is still the most widely used method in tiny holes process.But there are also many shortages such as low stiffness of aiguille,scraps discharge,aiguille easy to be broken,difficult position deviation of the drill.For axial vibration drilling technology, as a novelty drilling method, it combines drill rotation and axial vibration together.Because of the existence of axial vibration compared to traditional ordinary drilling, the axial vibration drilling fundamentally changes cutting mechanism.And the conventional continuous cutting process is transformed into a plused discontinuous cutting process by using axial vibration drilling.The traditional chip breaking of normal cutting process is usually based on physical principle,thus,its crumb is not reliable and its length is also hard to control.Chip breaking of vibration cutting progress is based on geometry principle,so the crumb and its length are reliable.Based on the finite element forming software Deform-3D, this article aims to analyse the forming process of crumb, achieve a dynamic simulation workpiece process of tiny hole by using axial vibration drilling, get the variation curve of parameter such as axial force,torque,material strain,and temperature ect,by using twist drill to machine the tiny hole with axial vibration drill.At last compared to the normal drilling parameter variation curve.After preliminary analysis,the axial vibration drilling technology has shown a good process effect.Paramaters such as axial force and torque ect have decreased greatly.