Title :
Error Modeling and Accuracy Analysis of a Novel 3-DOF Parallel Machine Tool
Author :
Zuo, Koucheng ; Xie, Liyang ; Zhang, Min ; He, Xuehong ; Yu, Peng
Author_Institution :
Sch. of Mech. Eng. & Autom., Northeastern Univ., Shenyang
Abstract :
The kinematics accuracy is a key factor in the design of parallel machine tool (PMT). By taking a novel 3-DOF PMT as an example, this paper investigates the accuracy of PMT system with degrees of freedom (DOF) fewer than 6. The machine tool architecture is introduced firstly. The mapping from the errors of legs and joints to the terminal is proposed by using matrix method with differential of the inverse kinematics solutions. A program in the Matlab language is presented to calculate the error model with Monte-Carlo method. Position error and pose error of the terminal are obtained under the condition of determinate machine error. The simulation indicates that among the error sources, the legs error is the main factor causing the terminal error. The maximum position error is about 0.085mm, and the maximum pose error is near 5 degrees. The machine tool can achieve great precision in the workspace
Keywords :
Monte Carlo methods; inverse problems; kinematics; machine tools; matrix algebra; Monte-Carlo method; Monte-Carlo simulation; accuracy analysis; error modeling; inverse kinematics; machine error; machine tool architecture; matrix method; parallel machine tool; terminal pose error; terminal position error; Error analysis; Helium; Jacobian matrices; Kinematics; Leg; Machine tools; Mathematical model; Numerical simulation; Parallel machines; Virtual manufacturing; Monte-Carlo simulation; accuracy analysis; error modeling; parallel machine tool;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1713631
