A Geometric Error Identification and Simulation Method Based on Laser Tracker for Large-Scale Multi-Axis NC Machine Tools

2012 ◽  
Vol 472-475 ◽  
pp. 556-560
Author(s):  
Ji Yang Ma ◽  
Fang Yu Peng ◽  
Rong Yan ◽  
Jing Wu
Keyword(s):  
Machine Tool ◽  
Coordinate System ◽  
Large Scale ◽  
Simulation Method ◽  
Geometric Error ◽  
Least Square ◽  
Laser Tracker ◽  
Profile Error ◽  
Error Identification ◽  
Nc Machine

To evaluate the profile error of manufacture mainly caused by geometric error of machine tool, this paper proposes a geometric error identification and profile error simulation method. The identify method measures each axis of machine tool based on laser tracker, then using the least square method to fit the axis, as a result the coordinate system of each axis can be built. The geometric error of machine tool can be gained by analysis of the coordinate system. Building the kinematics model of large-scale multi-axis NC machine tool considered the geometric error, then using MATLAB and UG second development to achieve simulation of profile error.

The Research and Application of Multi-Point and Time-Sharing Measurement Method on NC Machine Tool

2011 ◽  
Vol 697-698 ◽  
pp. 249-252
Author(s):  
Yu Fen Deng ◽  
Jun Jie Guo ◽  
Jin Dong Wang ◽  
H. Wang
Keyword(s):  
Machine Tool ◽  
Basic Principle ◽  
Measurement Method ◽  
Geometric Error ◽  
Laser Tracker ◽  
Time Sharing ◽  
Nc Machine Tool ◽  
Nc Machine

The paper presents the principle and algorithm of multi-point and time-sharing measurement method to detect the machine geometric accuracy.Its basic principle is based on laser tracker and the multilateral method,moreover,only one laser tracker is used in the measurement.Its cost is lower than multi-point and simultaneous measurement.Then the application of the method is introduced on a glass measuring instrument.The geometric error of the machine is separated in x and y direction.

The technical method of geometric error measurement for multi-axis NC machine tool by laser tracker

2012 ◽  
Vol 23 (4) ◽  
pp. 045003 ◽  
Author(s):  
Jindong Wang ◽  
Junjie Guo ◽  
Guoxiong Zhang ◽  
Bao'an Guo ◽  
Hongjian Wang
Keyword(s):  
Machine Tool ◽  
Geometric Error ◽  
Laser Tracker ◽  
Error Measurement ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
Geometric Error Measurement

Geometric Error Detection and Identification of a Heavy NC Boring and Milling Machine Tool by Using Laser Tracker

2010 ◽  
Vol 37-38 ◽  
pp. 505-508
Author(s):  
Xian Qiu Zhu ◽  
Dong Gao ◽  
Gang Wei Cui
Keyword(s):  
Machine Tool ◽  
Error Detection ◽  
Large Scale ◽  
Geometric Error ◽  
Laser Tracker ◽  
Milling Machine ◽  
Detection And Identification ◽  
Geometric Error Measurement ◽  
Measurement Efficiency ◽  
Heavy Machine

It is inefficient and complicate to detect geometric errors of a heavy machine tool with large scale dimensions by using traditional laser interferometer. With the development of the laser tracker convenient for measuring large scale dimension, the accuracy of the laser tracker can meet the accuracy requirements for geometric error measurement of heavy machine tools. In this paper a method of using laser tracker for detecting and identifying the error of a heavy NC boring and milling machine tool is introduced. The measuring experiment demonstrates that this new method can improve the measurement efficiency.

Method of Volumetric Error Compensation for 3-Axis NC Machine Tool

2012 ◽  
Vol 472-475 ◽  
pp. 2371-2376 ◽  
Author(s):  
Jin Dong Wang ◽  
Jun Jie Guo ◽  
Yu Fen Deng ◽  
Hai Tao Li
Keyword(s):  
Machine Tool ◽  
Error Compensation ◽  
Geometric Error ◽  
Machining Process ◽  
Laser Tracker ◽  
Machining Accuracy ◽  
Volumetric Error ◽  
Nc Machine Tool ◽  
Nc Machine ◽  
G Code

Error compensation is an effective method to improve the machining accuracy of NC machine tool. A laser tracker is used to rapidly and accurately detect the geometric error of NC machine tool in the paper. The machine tool is controlled to move on the preset path in the space, and a laser tracker is used to measure the motion trajectory of the machine tool. Each geometric error can be identified by error separation. Based on the error model of 3-axis machine tool, error compensation can be carried out by modifying the machining process (G code). Results of experiment show that, this measurement method is feasible, and modifying the G code for error compensation is also effective.

The Detection of NC Machine Geometric Accuracy Based on the Principle of Multiple-Time GPS

2011 ◽  
Vol 308-310 ◽  
pp. 531-537
Author(s):  
Yu Fen Deng ◽  
Jun Jie Guo ◽  
Jin Dong Wang ◽  
Jun Feng Lu
Keyword(s):  
Measurement Method ◽  
Geometric Error ◽  
Measurement Precision ◽  
Target Point ◽  
Laser Tracker ◽  
Multiple Time ◽  
Geometric Accuracy ◽  
Gps Positioning ◽  
Nc Machine ◽  
Machine Spindle

This paper presents a measurement method of NC machine geometric accuracy. The principle is that a laser tracker is used to collect a lot of target point coordinates on four different locations around the machine during the machine spindle moving. A redundant equations could be established through target point coordinates,then the exact location of each target point coordinates could be determined by the principles of GPS positioning.Through the target point coordinates,the geometric error of machine could be separated. The method has fast measuring speed and low cost.Moreover the measurement precision is higher than direct measurement only using one laser tracker because the GPS positioning principle is used to avoid the angle measurment of laser tracker.

Measurement of Geometric Error of Machine Tool Guideway System Based on Laser Tracker

2011 ◽  
Vol 38 (9) ◽  
pp. 0908002 ◽  
Author(s):  
张振久 Zhang Zhenjiu ◽  
胡泓 Hu Hong ◽  
刘欣 Liu Xin
Keyword(s):  
Machine Tool ◽  
Geometric Error ◽  
Laser Tracker
Sign in / Sign up

Export Citation Format

Share Document