Kinematic errors prediction for multi-axis machine tools’ guideways based on tolerance

2018 ◽  
Vol 98 (5-8) ◽  
pp. 1131-1144 ◽  
Author(s):  
Jinwei Fan ◽  
Haohao Tao ◽  
Changjun Wu ◽  
Ri Pan ◽  
Yuhang Tang ◽  
...  
Keyword(s):  
Machine Tools ◽  
Kinematic Errors

S1301-1-1 Machining Tests to Identify Kinematic Errors on Five-axis Machine Tools

2009 ◽  
Vol 2009.4 (0) ◽  
pp. 221-222
Author(s):  
Takeyuki Iritani ◽  
Soichi Ibaraki ◽  
Masahiro Sawada ◽  
Tetsuya Matsushita
Keyword(s):  
Machine Tools ◽  
Five Axis ◽  
Kinematic Errors

scholarly journals Machining tests to identify kinematic errors on five-axis machine tools

2010 ◽  
Vol 34 (3) ◽  
pp. 387-398 ◽  
Author(s):  
Soichi Ibaraki ◽  
Masahiro Sawada ◽  
Atsushi Matsubara ◽  
Tetsuya Matsushita
Keyword(s):  
Machine Tools ◽  
Five Axis ◽  
Kinematic Errors

Modeling Errors in Coordinate Measuring Machines and Machine Tools Using Homogeneous Transformation Matrices (HTM)

2014 ◽  
Vol 1025-1026 ◽  
pp. 56-59 ◽  
Author(s):  
Benedito di Giacomo ◽  
César Augusto Galvão de Morais ◽  
Vagner Augusto de Souza ◽  
Luiz Carlos Neves
Keyword(s):  
Machine Tools ◽  
Coordinate Measuring Machines ◽  
Coordinate Transformations ◽  
Transformation Matrices ◽  
Budget Analysis ◽  
Modeling Errors ◽  
Bridge Type ◽  
Accuracy And Repeatability ◽  
Metrological Performance ◽  
Kinematic Errors

Coordinate Measuring Machines (CMM's) have attributes to provide results with accuracy and repeatability in measurements, so they are considered equipment with potential for application in industrial environments, specifically in inspection processes. However, as in a machine tools the knowledge of the errors in CMM is needed and allows applying techniques of error compensation. This study aimed to develop a mathematical model of the kinematic errors of a bridge type CMM in "X", "Y" and "Z" directions. Modeling of the errors was accomplished using coordinate transformations applied to the rigid body kinematics; the method of the homogeneous transformation was used for the development of the model. The position and angular errors for the three axes of CMM, in addition to errors related to the absence of orthogonality between them were equated. This study allowed to conclude that modeling of errors applied to CMM allied to calibration is able to evaluate the metrological performance of equipment with displacement on guides, thus is possible to use this technique as error budget analysis in machines.

Accuracy enhancement of kinematic error model of three-axis computer numerical control machine tools

2016 ◽  
Vol 231 (11) ◽  
pp. 2021-2030 ◽  
Author(s):  
Mostafa Pezeshki ◽  
Behrooz Arezoo
Keyword(s):  
Machine Tools ◽  
Laser Interferometer ◽  
Error Model ◽  
Numerical Control ◽  
Accurate Estimation ◽  
Kinematic Error ◽  
Positioning Errors ◽  
Volumetric Errors ◽  
Kinematic Error Model ◽  
Kinematic Errors

Accurate estimation of volumetric errors is an important issue in machining operations. For this purpose, a kinematic error model is used to characterize machine tool’s related errors on its workspace. In this research, it is shown that when measuring the linear and positioning errors using a laser interferometer, part of the angular errors are converted to linear and positioning errors and their magnitudes are overestimated. These values are calculated twice in the models which use homogeneous transformation matrix since Abbe’s principle is not considered. In this article, a kinematic error model is proposed which eliminates this overestimation. This model’s methodology is based on rigid body kinematic and errors measurement by laser interferometer and can be generalized for all three-axis machine tools. A software package is developed to integrate the kinematic errors with the NC-codes. A workpiece is machined in the virtual environment and compared with a workpiece machined in real environment. It is shown that the kinematic error model developed in this research predicts the kinematic errors more accurately.

A Machining Test to Reflect Dynamic Machining Accuracy of Five-Axis Machine Tools

2012 ◽  
Vol 622-623 ◽  
pp. 414-419 ◽  
Author(s):  
Wen Ping Mou ◽  
Zhi Yong Song ◽  
Zhi Ping Guo ◽  
Li Min Tang
Keyword(s):  
Machine Tools ◽  
Tool Path ◽  
Industrial Applications ◽  
Machining Accuracy ◽  
Surface Machining ◽  
The Real ◽  
Machining Test ◽  
Five Axis ◽  
Kinematic Errors

NAS (National Aerospace Standard) 979 is the only standard well known in industry describing a five-axis machining test for measuring kinematic errors of five-axis machine tools. As it cannot reflect the tool path characteristics of typical ruled surface machining, five-axis machine tools which passed the NAS test may not have the ability to satisfy the requirement of the real industrial applications. To fill this gap between the NAS test and the real industrial applications, an “S” machining test is proposed in this paper. The case study shows that the proposed machining test is feasible and practicable.

scholarly journals Reproducibility of machine tools’ circularity test according to ISO 230-4 with respect to testing position

2017 ◽  
Vol 37 (1) ◽  
pp. 22-26
Author(s):  
Monika Woźniak ◽  
Paweł Majda
Keyword(s):  
Virtual Machine ◽  
Machine Tools ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Volumetric Error ◽  
Working Space ◽  
Bar Test ◽  
Different Characteristics ◽  
Kinematic Errors

AbstractIn this paper circularity of three different machine tools by Virtual Machine was analyzed. To get circularity we make a ball bar test according to ISO 230-4. The test is very common in engineering for a quick diagnostic Computerized Numerical Control (CNC) technical conditions. We implemented earlier calculations of Volumetric Error in our Virtual Machine. Then we simulated testing of circularity of CNC machine tools. The place to take the test was chosen randomly from Uniform Distribution in three different kinds of machine tools. Those machines had different characteristics of kinematic errors and squareness and also different sizes of working space. We observed significant differences in the indicator (circularity) depending on the place where the test was taken. Moreover we showed that there was no reason to take the test in the center of working table.

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