Validation of micromechanical systems

Albers, Albert; Burkardt, N.; Deigendesch, Tobias; Ellmer, C.; Hauser, Stefan

doi:10.1007/s00542-008-0601-8

Cited by 5 publications

(5 citation statements)

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“…Although it continues to be ambiguous, the term "micro gear" can probably be applied to any miniature gear mechanism that includes key functioning elements, such as pitch or module, with dimensions that fall within the micrometric range [70]. The development of different verification techniques is meanwhile taking place once again in parallel with corresponding progress in the field of microfabrication.…”

Section: New Applicationsmentioning

confidence: 99%

“…In 2008, Albers et al proposed the use of tangential and radial composite inspection for gears used in micro mechanisms [70], given the lack of any other suitable method at the time. This entails the adoption of defined standards for macroscopic gears, whose use is proposed for the special needs and operating conditions of microtechnology.…”

Section: New Applicationsmentioning

confidence: 99%

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A review of tangential composite and radial composite gear inspection

Pueo

Santolaria

Acero

et al. 2017

Precision Engineering

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This paper presents an overview of the literature on tangential composite and radial composite gear inspection. It demonstrates -by dealing with their origins and key milestones in their history and development -the important role that inspections play in terms of the functional nature of the gears concerned. This comprehensive consideration of the subject also attempts to demonstrate how the lack of clear guidelines and standards designed to unify the criteria applied to testing, the interpretation of results and calibration of equipment, along with the number of simultaneous variables involved in trials of this type, leads to doubts (including with respect to the actual standards concerned) as to whether these tests are valid, or instead accepted only has partial validations. Even so, the repeatability of the experimental data demonstrates not only their metrological potential, with respect to functionality, but also the fact that they are both effective and original.

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Section: New Applicationsmentioning

confidence: 99%

Section: New Applicationsmentioning

confidence: 99%

A review of tangential composite and radial composite gear inspection

Pueo

Santolaria

Acero

et al. 2017

Precision Engineering

View full text Add to dashboard Cite

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“…[1]. From the described principle, the calculation of the scanned contour of the gear wheels is derived.…”

Section: Contour Calculation and Theoretical Errormentioning

confidence: 99%

“…The research of micromechanical technology is mainly focused on two aspects: the further miniaturization and high integration, and the quality assurance of micro mechanical products [1].…”

Section: Introductionmentioning

confidence: 99%

Application and evaluation of optical distance measurements in geometrical quality testing of microgears

Albers¹,

Pan²,

Marxen³

et al. 2010

Front. Mech. Eng. China

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Microgears are increasingly important in industry. Compared to normal gears, the quality assurance of microgears needs more accurately measured data and simple but feasible measurement methods because of their dimension particularities, which are usually obtained with coordinate measuring systems. The disadvantages of this measurement technique are not only huge time and money consumption but also inconvenience due to the weight and dimension of the coordinate measuring machine (CCM). This paper proposes using an optical chromatic white light sensor CWL to scan the profile of microgear wheels instead of using a CMM. The possibility of calculating optimized positioning of the sensor is introduced; the principle of the measuring method and relevant calculations for generating the contour and analyzing theoretical errors are described. With the measured data, several exemplary geometrical deviations are shown and evaluated by comparing with the measurements from a CMM. Compared to the conventionally used methods, this method spends short time to conduct the geometrical measurement. Integrating this method into the test rig for functional testing, functional and geometrical testing can be conducted at once and, thus, save even more time.

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“…This is mainly due to two reasons: First, fine-pitch gears have complex geometric shapes and small dimensions, making it difficult to produce high-precision gear artifacts; second, there is a lack of ultra-precision measuring instruments for fine-pitch gears with high-precision micro-force measuring probes. What is more, even if master gears can be processed to meet the accuracy requirements, it is difficult to achieve the calibration measurements [16][17][18]. Therefore, verification of software and hardware functions of the fine-pitch gear measurement system and calibration of the instrument are both challenges to be solved.…”

Section: Introductionmentioning

confidence: 99%

Calibration Method Based on Virtual Gear Artefact for Computer Vision Measuring Instrument of Fine Pitch Gear

Wang,

Yao,

Shi

2024

Sensors

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The verification of the correctness, adaptability, and robustness of software systems in modern precision measurement instruments is of great significance. Due to the difficulty in processing and calibrating high-precision fine-pitch gear artefacts, the function verification and accuracy calibration of vision measurement instruments for the fine-pitch gear have become a challenge. The calibration method of the gear vision measurement system based on the virtual gear artefact involves two steps, namely obtaining and applying the virtual artefact. The obtained virtual gear artefact has the same geometric features, error features, and image edge features as the real artefact. The calibration method based on the virtual artefact can complete the correctness verification of the gear vision measurement system, and is superior to the traditional methods in adaptability verification, robustness verification, and fault analysis. In a test, the characteristic error of the virtual gear artefact could be reproduced with the original shape in the evaluation results of the computer vision gear measurement (CVGM) system, while the reproduction error did not exceed 1.9 μm. This can meet the requirements of the verification of the gear vision measurement software. The application of the virtual gear artefact can significantly improve the accuracy and robustness of the computer vision measuring instrument of the fine-pitch gear.

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Validation of micromechanical systems

Cited by 5 publications

References 0 publications

A review of tangential composite and radial composite gear inspection

A review of tangential composite and radial composite gear inspection

Application and evaluation of optical distance measurements in geometrical quality testing of microgears

Calibration Method Based on Virtual Gear Artefact for Computer Vision Measuring Instrument of Fine Pitch Gear

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