A methodology for systematic geometric error compensation in five-axis machine tools

Khan, Abdul Wahid; Chen, Wuyi

doi:10.1007/s00170-010-2848-3

Cited by 112 publications

(49 citation statements)

References 31 publications

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“…Currently, new compensation systems have been developed by control system manufacturers, such as Siemens' Volumetric Compensation System (VCS), Heidenhain's Kinematic Comp, and Fanuc's 3D Compensation/3D Rotary Compensation, which use the approximation function of each geometric error of the MT to compensate for the influences of errors [20,21].…”

Section: Control System Of the Machine Toolmentioning

confidence: 99%

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

et al. 2016

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Besides presenting a volumetric verification technique that allows characterization of the different geometric errors of a machine tool (MT) depending on its kinematic chain and geometry through a kinematic model, this paper investigates the influence of measurement tools and techniques available on the final accuracy of the MT. Volumetric verification based on a laser tracker (LT) relates the coordinates of the tool with the coordinates of the LT, including it into the kinematic model. Using a non-lineal optimization process, approximation functions that characterize the joint influence of MT geometric errors are obtained. However, measurement data will be affected by previous compensation of the MT, the accuracy of the measurement system, LT measurement technology, the type of retroreflector used, and techniques used to improve data accuracy, among other sources of errors. This paper studies the adequacy of different commercial alternatives such as: retroreflectors, LTs from different manufacturers, etc., that can be applied in MT verification using a long-range MT. As the accuracy is strongly affected by the uncertainty of its angular encoders, the multilateration technique tries to improve data accuracy using only LT radial information. Nonetheless, a new bundle adjustment which uses radial and angular information is presented in current metrology software. This paper studies both techniques and analyzes their adequacy for MT verification too.

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Section: Control System Of the Machine Toolmentioning

confidence: 99%

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

et al. 2016

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“…Several linear axes accuracy evaluation standards were formulated at home and abroad [9,10], and considerable attention were given to the geometric errors identification of linear axes [11][12][13]. Hsu and Wang [14] summarized the error compensation techniques into three steps: (1) developing an error model, (2) measuring errors by devices, and (3) compensating the machine according to the obtained errors.…”

Section: Introductionmentioning

confidence: 99%

“…The straightness errors obtained in the 9-line method contain the influence of the squareness errors. Su [13] summarized the characteristics of the aforementioned methods and proposed a 12-line method. However, the influence of angular errors on the multi-axis movement position errors is neglected in the 12-and 15-line methods, which decreases the identification accuracy.…”

Section: Introductionmentioning

confidence: 99%

Geometric error identification and compensation of linear axes based on a novel 13-line method

Xie

Liu

et al. 2016

Int J Adv Manuf Technol

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The geometric accuracy of linear axes lays a foundation for the machining accuracy of 5-axis machine tools. Although some geometric error identification and compensation approaches were developed for linear axes, the implementation efficiency and cost remain to be improved. In this paper, a novel 13-line identification method by using a laser interferometer is proposed, and the linear axes are compensated through the modification of compensation parameters in the NC system. The verification experiments are conducted through the tri-axial movement accuracy measurement and manufactured National Aerospace Standard test piece inspection, in which three circumstances, i.e., without compensation, with lead screw error compensation, and with error compensation based on the 13-line method, are compared. By using the 13-line method, the average accuracy of the tri-axial movement and test pieces are improved by 82.2 and 41.9 %, respectively, whereas the accuracy stability are improved by 77 and 46 %, respectively. Results show that the proposed identification and compensation method is effective and efficient.

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“…Geometric errors include pitch errors of the lead screws, straightness errors of the guide ways, angular errors of machine slides, and orthogonal error among machine axis [3]. Because its contribution to 30% of the total error so it is given special consideration through the configuration and allocation of appropriate dimensional errors in the design of machine tools with satisfactory machining accuracy [19]. Machine tools are usually made by several assembling parts, and the dimensional and geometric variations of each part have to be specified by tolerances which guarantee a certain level of quality in terms of satisfying functional requirements [20].…”

Section: Introductionmentioning

confidence: 99%

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

Cai¹,

Zhang²,

Cheng³

et al. 2015

Eksploatacja i Niezawodnosc - Maintenance and Reliability

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A methodology for systematic geometric error compensation in five-axis machine tools

Cited by 112 publications

References 31 publications

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

Adequacy of Technical and Commercial Alternatives Applied to Machine Tool Verification Using Laser Tracker

Geometric error identification and compensation of linear axes based on a novel 13-line method

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability

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