NON-LINEAR ERROR MODELING OF THE POSITION AND ORIENTATION OF PARALLEL MACHINE TOOL BASED ON THE MEASURING DATA

2001 ◽  
Vol 37 (02) ◽  
pp. 38
Author(s):  
Xiaoliu Yu
Keyword(s):  
Machine Tool ◽  
Parallel Machine ◽  
Error Modeling ◽  
Non Linear ◽  
Position And Orientation ◽  
Parallel Machine Tool

Review on Error Compensation Technology of Parallel Machine Tool

2014 ◽  
Vol 800-801 ◽  
pp. 798-802
Author(s):  
Liang Zhou ◽  
Liu Tang ◽  
Ju Long Yuan ◽  
Da Gang Xie
Keyword(s):  
Machine Tool ◽  
Error Detection ◽  
Error Compensation ◽  
Parallel Machine ◽  
Research Trends ◽  
Error Modeling ◽  
Modeling Error ◽  
Development History ◽  
History Of ◽  
Parallel Machine Tool

This paper reviews the development history of parallel machine tool and new achievements in China and abroad. Typical methods of error modeling, error detection and error compensation are introduced. After analyzing the biggest problem of recent error compensation technology, this paper prospects the further research trends.

Kinematic Analysis of a Four Degreed-of-Freedoms Hybrid Machine Tool

2011 ◽  
Vol 204-210 ◽  
pp. 1651-1654
Author(s):  
Yan Fei Zhang ◽  
Jin Liang Gong ◽  
Xiu Ting Wei
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Parallel Machine ◽  
Spherical Joint ◽  
Kinematic Modeling ◽  
Hybrid Machine Tool ◽  
Hybrid Mechanism ◽  
Hybrid Machine ◽  
Position And Orientation ◽  
Parallel Machine Tool

On one hand, parallel machine tool enjoys many advantages over conventional serial counterpart, on the other hand, it also suffers from the disadvantages of coupled position and orientation, difficulty in kinematic modeling, strict requirements for components and difficulty in manufacturing of the spherical joint adopted in some limbs. Hybrid mechanism, however, will serve the turn in some cases. By using a three degree-of-freedoms parallel mechanism and a slide worktable which will fulfill one movement, a novel four degree-of-freedoms hybrid machine tool is put forward. The kinematic solutions are analyzed and closed-form kinematic solutions are given. The methods and theories adopted here can be used for design of other types of hybrid machine tools.

Kinematic Error Analysis of Parallel Machine Tool Based on Rigid Body Dynamics

2015 ◽  
Vol 743 ◽  
pp. 71-78
Author(s):  
Xiao Gang Chen ◽  
Zhao Tang Xu ◽  
Hai Bing Wu
Keyword(s):  
Rigid Body ◽  
Machine Tool ◽  
Parallel Machine ◽  
Position Error ◽  
Rigid Body Dynamics ◽  
Friction Forces ◽  
Analytical Expression ◽  
Body Dynamics ◽  
Position And Orientation ◽  
Parallel Machine Tool

To estimate influence of velocity on kinematic accuracy for a cross-linked Stewart type Parallel Machine Tool, position and orientation errors of the moving tool platform are researched. Based on rigid body dynamics, inertial and friction forces and moments are considered. Firstly, analytical expression of driving force is derived for each link. Secondly, change of length is derived using Hooke’s Law for each link. Then mapping matrix between change of link length and change of platform position and orientation is derived based on both Euler angle and revolving angle around a spatial axis. Finally, analytical expression of position and orientation errors of the moving platform is derived. Figures of distribution of position and orientation errors in workspace under two velocities are obtained respectively. The results show that, in frequently used workspace, all of the three components of position error are less than 3.5μm. All of them increase with z coordinate of platform center. Position error is influenced slightly by velocity. The difference of position error between two velocities is less than 2%.

The Error Modeling on a Kind of Parallel Machine Tool in Considering the Joint Gap

2010 ◽  
Vol 129-131 ◽  
pp. 266-270
Author(s):  
Jian Ye Guo ◽  
Chao Yu ◽  
Jia Shun Shi
Keyword(s):  
Mathematical Model ◽  
Machine Tool ◽  
Parallel Machine ◽  
Error Modeling ◽  
Joint Point ◽  
Joint Gap ◽  
Tool Posture ◽  
Parallel Machine Tool ◽  
The Mathematical Model ◽  
Model Expression

This paper takes a kind of 3-UPS Parallel Machine Tool (PMT) as the objective of research. First, the kinematic analysis is carried out to the machine and the kinematics equation is obtained. Then, the mathematical model on tool posture error of this machine is established in considering the joint gap based on the kinematics equation. According to the mathematical model expression, the posture error of tool tip point can be calculated when the specific values to the length error of the driving rod and the position error of the joint point are known. The establishment of error model has important theoretical significance to the design as well as the error analysis and compensation of this Parallel Machine Tool.

Oppositely oriented series multiple tuned mass dampers and application on a parallel machine tool

2022 ◽  
Vol 163 ◽  
pp. 108196
Author(s):  
Wenshuo Ma ◽  
Xiaoliang Jin ◽  
Jingjun Yu ◽  
Yiqing Yang ◽  
Xinjun Liu ◽  
...  
Keyword(s):  
Machine Tool ◽  
Parallel Machine ◽  
Tuned Mass Dampers ◽  
Parallel Machine Tool ◽  
Multiple Tuned Mass Dampers
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