Cargando…

Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine

In order to enhance the measurement availability for manufacturing applications, on-machine surface measurement (OMSM) is integrated onto the machine tools, which avoids the errors caused by re-positioning workpieces and utilizes the machine axes to extend the measuring range as well. However, due t...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Duo, Jiang, Xiangqian, Tong, Zhen, Blunt, Liam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082255/
https://www.ncbi.nlm.nih.gov/pubmed/30424267
http://dx.doi.org/10.3390/mi9070334
_version_ 1783345776455319552
author Li, Duo
Jiang, Xiangqian
Tong, Zhen
Blunt, Liam
author_facet Li, Duo
Jiang, Xiangqian
Tong, Zhen
Blunt, Liam
author_sort Li, Duo
collection PubMed
description In order to enhance the measurement availability for manufacturing applications, on-machine surface measurement (OMSM) is integrated onto the machine tools, which avoids the errors caused by re-positioning workpieces and utilizes the machine axes to extend the measuring range as well. However, due to the fact that measurement probe actuation is performed using the machine tool axes, the inherent kinematics error will inevitably induce additional deviations onto the OMSM results. This paper presents a systematic methodology of kinematics error modelling, measurement, and compensation for OMSM on an ultra-precision turning lathe. According to the measurement task, a selective kinematics error model is established with four primary error components in the sensitive measurement direction, based on multi-body theory and a homogeneous transformation matrix (HTM). In order to separate the artefact error from the measurement results, the selected error components are measured using the reversal method. The measured error value agrees well with the machine tool’s specification and a kinematics error map is generated for further compensation. To verify the effectiveness of the proposed kinematics error modelling, measurement, and compensation, an OMSM experiment of an optically flat mirror is carried out. The result indicates the OMSM is the superposition of the sample surface form error and the machine tool kinematics error. With the implementation of compensation, the accuracy of the characterized flatness error from the OMSM improves by 67%.
format Online
Article
Text
id pubmed-6082255
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-60822552018-11-01 Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine Li, Duo Jiang, Xiangqian Tong, Zhen Blunt, Liam Micromachines (Basel) Article In order to enhance the measurement availability for manufacturing applications, on-machine surface measurement (OMSM) is integrated onto the machine tools, which avoids the errors caused by re-positioning workpieces and utilizes the machine axes to extend the measuring range as well. However, due to the fact that measurement probe actuation is performed using the machine tool axes, the inherent kinematics error will inevitably induce additional deviations onto the OMSM results. This paper presents a systematic methodology of kinematics error modelling, measurement, and compensation for OMSM on an ultra-precision turning lathe. According to the measurement task, a selective kinematics error model is established with four primary error components in the sensitive measurement direction, based on multi-body theory and a homogeneous transformation matrix (HTM). In order to separate the artefact error from the measurement results, the selected error components are measured using the reversal method. The measured error value agrees well with the machine tool’s specification and a kinematics error map is generated for further compensation. To verify the effectiveness of the proposed kinematics error modelling, measurement, and compensation, an OMSM experiment of an optically flat mirror is carried out. The result indicates the OMSM is the superposition of the sample surface form error and the machine tool kinematics error. With the implementation of compensation, the accuracy of the characterized flatness error from the OMSM improves by 67%. MDPI 2018-07-02 /pmc/articles/PMC6082255/ /pubmed/30424267 http://dx.doi.org/10.3390/mi9070334 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Duo
Jiang, Xiangqian
Tong, Zhen
Blunt, Liam
Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title_full Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title_fullStr Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title_full_unstemmed Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title_short Kinematics Error Compensation for a Surface Measurement Probe on an Ultra-Precision Turning Machine
title_sort kinematics error compensation for a surface measurement probe on an ultra-precision turning machine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082255/
https://www.ncbi.nlm.nih.gov/pubmed/30424267
http://dx.doi.org/10.3390/mi9070334
work_keys_str_mv AT liduo kinematicserrorcompensationforasurfacemeasurementprobeonanultraprecisionturningmachine
AT jiangxiangqian kinematicserrorcompensationforasurfacemeasurementprobeonanultraprecisionturningmachine
AT tongzhen kinematicserrorcompensationforasurfacemeasurementprobeonanultraprecisionturningmachine
AT bluntliam kinematicserrorcompensationforasurfacemeasurementprobeonanultraprecisionturningmachine