On-the-fly calibration of linear and rotary axes of machine tools and CMMs using a tracking interferometer

Schwenke, H.; Schmitt, Robert; Jatzkowski, Philipp; Warmann, Christina

doi:10.1016/j.cirp.2009.03.007

Cited by 132 publications

(60 citation statements)

References 4 publications

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“…It has a spatial displacement measurement uncertainty of U (k = 2) = 0.2 µm + 0.3 µm/m [114]. While laser tracer is a suitable solution for medium and large size MTs, the product "laser tracer MT" is a similar solution to the laser tracer with a telescopic scheme and employed for maximum measuring volumes of 1 m 3 [115].…”

Section: Indirect Measurement Methodsmentioning

confidence: 99%

“…The commercial laser tracer [114] is employed for point cloud acquisition and from the error of those points and the kinematic model of the machine it is possible to iterate to minimize the global volumetric error of the machine at considered points. For the measurement of angular errors, different orientation offsets on the spindle side are needed which makes the verification longer.…”

Section: Indirect Measurement Methodsmentioning

confidence: 99%

“…Schwenke et al presents a multilateration based continuous data acquisition solution (on the fly) where calibration is speeded up significantly by a continuous measurement at constant speed. This option permits to increase the number of sampling points and reduce drastically the measurement time, allowing the measurement of quasi static errors of MTs [114]. However, the measurement process cannot be automated entirely because multilateration is executed in sequence and the device is located by hand.…”

Section: Quasi-static Error Assessment and Monitoringmentioning

confidence: 99%

See 2 more Smart Citations

Traceability on Machine Tool Metrology: A Review

Mutilba¹,

Gomez-Acedo²,

Kortaberria³

et al. 2017

Preprint

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Errors during manufacture of high value components are not acceptable nowadays in driving industries such as energy and transportation. Sectors such as aerospace, automotive, shipbuilding, nuclear power, large science facilities or wind power manufacture complex and accurate components that demand close measurements and fast feedback into manufacturing processes. New measuring technologies are already available in machine tools, including integrated touch probes and fast interface capabilities. They shall provide the possibility to measure the workpiece during or after the manufacturing process, maintaining the original setup of the workpiece and avoiding the manufacturing process from being interrupted to transport the workpiece to a measuring position. However, the traceability of the measurement process on a machine tool is not ensured yet and measurement data is still not fully reliable for process control or product validation. Due to the similarity between a coordinate measuring machine and a machine tool, some of the methods applied for a correct assessment of uncertainty in coordinate measuring machines are adapted to the challenges of a machine tool. The scientific objective is to determine the uncertainty on a machine tool measurement and, in this way, convert it into a machine integrated traceable measuring process. This paper reviews the fundamentals of machine tool metrology.

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Section: Indirect Measurement Methodsmentioning

confidence: 99%

Section: Indirect Measurement Methodsmentioning

confidence: 99%

Section: Quasi-static Error Assessment and Monitoringmentioning

confidence: 99%

See 1 more Smart Citation

Traceability on Machine Tool Metrology: A Review

Mutilba¹,

Gomez-Acedo²,

Kortaberria³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…Calibration mode uses more than four LaserTRACERs or one LaserTRACER with time sharing (i.e., multilateration method) and error mapping to compute the 21 terms of error motion compensation for three-axis machine tools [20,23]. Moreover, LaserTRACER can be applied to calibrate the rotary axes of machine tools [24] and can be applied to extra-small machine tool volumetric error compensation [25]. When LaserTRACER operated in ISO test mode, positioning accuracy of the machine tool causes measurement uncertainty because of misalignment.…”

Section: Coordinate Offsetmentioning

confidence: 99%

Relationship between ISO 230-2/-6 Test Results and Positioning Accuracy of Machine Tools Using LaserTRACER

et al. 2016

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Abstract:To test the positioning accuracy and repeatability of the linear axes of machine tools, ISO (International Standards Organization) 230-2 and ISO 230-6 are usually adopted. Auto-tracking laser interferometers (ATLI) can perform the testing for the positioning accuracy and the repeatability including x-, y-and z-axes according to ISO 230-2 as well as xy, xz, yz, and xyz diagonal lines following ISO 230-6. LaserTRACER is a kind of ATLI. One of the steps of the ISO 230-2 and -6 tests using LaserTRACER is to determine the coordinate of the LaserTRACER with respect to the home point of the machine tool. Positioning accuracy of the machine tool causes the coordinate determined error, which might influence the test result. To check on this error, this study performs three experiments. The experiment results show that the positioning error appears on the testing results.

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“…Previous works already addressed this problem and proposed new alternatives for the assessment of the geometrical errors of large machines [4,5]. In these works, up to four laser tracers can be placed in different positions of the working volume of the machine in order to find its geometrical errors by means of calculation by multilateration techniques.…”

Section: Introductionmentioning

confidence: 99%

Verification of Machine Tools Using Multilateration and a Geometrical Approach

et al. 2018

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A multilateration technique using three laser trackers to assess the geometrical errors of machine tools, not from a volumetric approach, but from a geometrical one is presented. It has been applied to a medium-size milling machine together with other more conventional systems, including laser interferometer, reference ball artifacts, and self-centering probes. A comparison among all these different techniques and the errors obtained has been carried out in order to determine their respective limitations and the sources of uncertainty affecting each of them. This has been used as a first step to establish the advantages and limitations of this multilateration technique, especially when verifying large machine tools. The options for using only one laser tracker have also been studied and their limitations established.

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On-the-fly calibration of linear and rotary axes of machine tools and CMMs using a tracking interferometer

Cited by 132 publications

References 4 publications

Traceability on Machine Tool Metrology: A Review

Traceability on Machine Tool Metrology: A Review

Relationship between ISO 230-2/-6 Test Results and Positioning Accuracy of Machine Tools Using LaserTRACER

Verification of Machine Tools Using Multilateration and a Geometrical Approach

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