An Integrated Methodology for Workpiece-fizture System Stiffness Calculation and Error Control
The deformation error for the machining of thin walled part has a great influence on the machining quality of the part. However the traditional methodologies are still unsuccessful in studying the influence between the workpiece fixture systems stiffness and machining errors of part. In this paper a framework to curb the machining errors based on the deformation of workpiece-fixture system is provided. By the quasic static force analysis of workpiece, a new method to compute the stiffness of workpiece-fixture system is presented and the contact analysis in Finite Element Analysis (FEA) and multi-nonlinear calculation are avoided. Further, the analytic model for machining errors caused by the deformation of workpiece-fixture system is given. Based on the FEA and neural networks, cutting parameters have been optimized under the given machining errors caused by the deformation of workpiece-fixture system, so that the errors can be controlled. Finally, a case study has been used to validate the proposed model.
workpiece-fizture system stiffness calculation error control cutting parameter optimum
Zhang fa-ping Lu ji-ping Yan yan Sun hou-fang Shahid I.Butt
School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing 100081,P.R.Ch Institute of Manufacturing Engineering National University of Sciences and Technology Lahore 54500,P
国际会议
长沙
英文
1431-1434
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）