Thermal test piece for 5-axis machine tools

Wiessner, Moritz; Blaser, Philip; Böhl, Sebastian; Mayr, Josef; Knapp, Wolfgang; Wegener, Konrad

doi:10.1016/j.precisioneng.2018.01.017

Cited by 28 publications

(13 citation statements)

References 8 publications

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“…Geometric accuracy is assessed according to ISO 230. These procedures are usually part of verification when deploying new methods of compensation of machine tools or models to predict machine accuracy [22]. It is based on the basic methods of compensating for the geometric errors of the tillage machines summarised in publication [23].…”

Section: Introductionmentioning

confidence: 99%

“…This workpiece is specified to verify the production accuracy of three-axis kinematics with the option of assessing several dimensional and shape deviations. Publications [22] and [28] describe the effect of machine load on the position of the rotary axis, as well as the resulting orientation errors. When assessing the geometric errors of the machine, it is necessary to consider the machining forces and heat dissipation in the machine.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study of the Volumetric Error Effect on the Resulting Working Accuracy—Roundness

et al. 2020

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Currently, various types of software compensations are applied to machine tools. Their aim is to increase the working accuracy of the tools. The improvement in working accuracy is then further assessed according to the increase in the dimensional and shape accuracy or the surface quality of the workpiece. This publication describes the effects of the volumetric accuracy of a machine tool on the working accuracy of a workpiece, where total roundness (RONt) is evaluated in multiple cuts. In the experiment, two test workpieces are manufactured on a three-axis milling machining centre. The first is made using a standard machine setup while the second with activated volumetric compensation. The LaserTRACER self-tracking laser interferometer is used to compensate for volumetric accuracy. In the second part, verification measurements are performed with a Ballbar, where roundness error is evaluated according to ISO 230-4. Then two test workpieces are machined, and, in the last part, measurement is performed on Talyrond 595S roundness measuring equipment. Finally, the results are analysed and the dependence between the volumetric accuracy, the circularity error of the machine and the working accuracy of the CNC machine tool is established, represented by the RONt of the workpiece. This paper presents new and unpublished relations between the volumetric accuracy of the machine tool and the RONt of the workpiece.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Volumetric Error Effect on the Resulting Working Accuracy—Roundness

et al. 2020

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“…In order to demonstrate the industrial feasibility and the accuracy improvement due to the TALC, Blaser et al [55] applied the TALC during the manufacturing of thermal test-pieces. The used thermal test-piece was developed by Wiessner et al [56] and is able to represent the three translation and one rotational thermal errors of a vertical rotary axis over eight time steps. The corresponding errors of the thermal test-piece with inactive and active TALC are illustrated in Fig.…”

Section: Ensemble Deep Transfer Learningmentioning

confidence: 99%

Operator Integrated – Concept for Manufacturing Intelligence

Wegener¹,

Weikert²,

Mayr³

et al. 2021

Journal of Machine Engineering

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Increasing autonomy and sustainability are major goals in manufacturing. Main technological trends provide enablers for achieving these goals and need to be implemented and combined in manufacturing machinery in a suitable manner. The paper exposes a vision of modern manufacturing machines, where the complexity of manufacturing processes is handled within the manufacturing machine and a simplistic front end is presented to the operator, which means that major elements of operators' tasks are fulfilled by the intelligence of the machine. Research vectors paving the ground for this concept from different points of view are then discussed. Research is presented on intelligent grinding, intelligent recognition and suppression of chatter, adaptive thermal and motion error compensation exploting also self-learning abilities. It is necessary to point out, that not only intelligent mastering of process and machine becomes more and more important but communications among machine tools enabling process chain overarching intelligent approaches and creating intelligent factories.

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“…For example, Thiebaut defines a particular part for 3 axes free-form machining [7]. Wiessner et al dedicate part of their study to the influence of machine-tool thermal deformations [8]. Florussen proposes the use of a torus-shaped test part with a hemispherical tool for evaluating the accuracy of the machine tool during machining [9].…”

Section: Introductionmentioning

confidence: 99%