Analytical prediction of chatter stability of end

Authors: Jakeer Hussain Shaik J Srinivas

Publish Date: 2016/06/04

Volume: 39, Issue: 5, Pages: 1633-1646

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Abstract

This article presents the dynamic stability issues in helicalend milling using a threedimensional cutting force model with flexibility consideration in spindletool holdertool unit Frequency responses of tooltip are obtained by finiteelement modelling of spindletool assembly Assembly level geometrical variations such as tapered hole in spindle and holder elements as well as multiple steps in spindle shaft are properly considered during modelling These tooltip frequency responses are validated with 3D finiteelement models where all component flexibilities are included The threedimensional cutting force model is employed to generate the expressions for stable depthofcut and operating speeds during machining operation and these outcomes are compared with those obtained from twodimensional cutting force model The 3D stability model is experimentally verified using the cutting tests at the proposed operational parameters Later the work concentrates on the analysis of the cutting forces and the vibrations generated in the helicalend milling process at different depths of radial immersions

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