Dimensional error prediction and its intelligent soft pre-compensation in batch manufacture

This paper aims to present a computer-based prediction and compensation method for dimensional errors in batch manufacture without additional hardware requirements. Indexable insert grinding is introduced as the instance for batch manufacture. The least square polynomial fitting is applied to predict the dimensional error trend for batch manufacture. The polynomial fitting estimates the workpiece dimensional error with a good accuracy. A low-pass filter is introduced to determine the compensation for the next workpiece processing. Error correction is realized via grinding workpieces with a modified CNC part program. The simulation and experimental results verify the effectiveness of error prediction and intelligent soft pre-compensation method, and the dimensional accuracy has been improved significantly.

[1]  Michel Guillot,et al.  Accuracy enhancement of multi-axis CNC machines through on-line neurocompensation , 2000, J. Intell. Manuf..

[2]  Ben Wang,et al.  Radial Error Feedback Control for Bar Turning in CNC Turning Centers , 2003 .

[3]  Wenqi Ren,et al.  Thermal error modeling and compensation of long-travel nanopositioning stage , 2013 .

[4]  Jun Ni,et al.  Accuracy enhancement of a horizontal machining center by real-time error compensation , 1996 .

[5]  Wuyi Chen,et al.  A methodology for systematic geometric error compensation in five-axis machine tools , 2011 .

[6]  Ralph C. Veale,et al.  Error Compensation of Coordinate Measuring Machines , 1985 .

[7]  Seung-Han Yang,et al.  Statistical optimization and assessment of a thermal error model for CNC machine tools , 2002 .

[8]  Yan Li,et al.  Intelligent dimensional error pre-compensation in CNC grinding using iterative learning approach , 2013 .

[9]  Shih-Ming Wang,et al.  A new high-efficiency error compensation system for CNC multi-axis machine tools , 2006 .

[10]  Erkan Ülker,et al.  An artificial immune system approach to CNC tool path generation , 2009, J. Intell. Manuf..

[11]  Ben Wang,et al.  Radial Error Feedback Geometric Adaptive Control for Bar Turning in CNC Turning Centers , 2003 .

[12]  Xincheng Tian,et al.  Dimensional error analysis and its intelligent pre-compensation in cnc grinding , 2008 .

[13]  Jun Ni,et al.  Real-time cutting force induced error compensation on a turning center , 1997 .

[14]  Yang Jianguo,et al.  Thermal error optimization modeling and real-time compensation on a CNC turning center , 2008 .

[15]  Aun-Neow Poo,et al.  Error compensation in machine tools — a review: Part I: geometric, cutting-force induced and fixture-dependent errors , 2000 .

[16]  Tsunemoto Kuriyagawa,et al.  Profile error compensation approaches for parallel nanogrinding of aspherical mould inserts , 2007 .

[17]  Can Çoğun,et al.  Computer-based estimation and compensation of diametral errors in CNC turning of cantilever bars , 2011, J. Intell. Manuf..

[18]  Eric R. Marsh,et al.  In-process measurement of form error and force in cylindrical-plunge grinding , 2008 .

[19]  Jun Ni,et al.  The real-time error compensation technique for CNC machining systems , 1998 .