Advances in Large-Scale Metrology – Review and future trends

Schmitt, Robert; Peterek, Martin; Morse, Edward P.; Knapp, Wolfgang; Galetto, Maurizio; Härtig, Frank; Goch, G.; Hughes, Ben; Forbes, A B; Estler, William T.

doi:10.1016/j.cirp.2016.05.002

Cited by 181 publications

(105 citation statements)

References 108 publications

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“…For the measurement of angular errors, different orientation offsets on the spindle side are needed which makes the verification longer. To sum up, it seems that interferometer based non-contact measuring technology will guide large scale metrology into traceable machine tool metrology in the near future, mainly because the absolute distance measurements allow an easy handling in industry where purely interferometric length measurements depending on fringe counting are quite demanding due to the need of an unbroken line-of-sight between the measuring instrument and the reflector [8].…”

Section: Indirect Measurement Methodsmentioning

confidence: 99%

“…However, it shall be remarked that the technology has some key limitations nowadays, such as [8]: • Thermal and refractive index distortions: As the uncertainty of interferometry techniques is significantly influenced by the ambient refractive index of air and industrial environments normally suffer from unstable environmental conditions, the correct determination of the refractive index of air along the beam path is of utmost importance for achieving small measurement uncertainties. Covering the measurement volume with 'sufficient' environmental sensors is often not feasible for large measuring volumes and might still miss local temperature sources, such as heating vents.…”

Section: Indirect Measurement Methodsmentioning

confidence: 99%

“…In this case, uncertainty evaluation is done based on an uncertainty budget where the budget should comprise the uncertainty sources that affect the measurement process and the correlation between them [3]. Thus, a correct assessment of the measurement uncertainty requires contributions from the measurement system, from the object under measurement and from the interaction between them [3,8]. Currently, this approach is being considered for large scale uncertainty assessment.…”

Section: Uncertainty Budget Methods Based On Vdi 2617-11mentioning

confidence: 99%

“…However, there are other error sources such as environmental temperature or simple backlash errors that induce a quasi-static geometric error of the MT that can be monitored and assessed. In fact, quasi-static errors are one of the most important error source for large scale precision manufacturing [8].…”

Section: Repeatabilitymentioning

confidence: 99%

“…Since then, several research works have focused on the idea of converting a MT into a CMM [7][8][9][10][11].…”

Section: Converting a Mt Into A Cmmmentioning

confidence: 99%

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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: Uncertainty Budget Methods Based On Vdi 2617-11mentioning

confidence: 99%

Section: Repeatabilitymentioning

confidence: 99%

“…Since then, several research works have focused on the idea of converting a MT into a CMM [7][8][9][10][11].…”

Section: Converting a Mt Into A Cmmmentioning

confidence: 99%

See 3 more Smart Citations

Traceability on Machine Tool Metrology: A Review

Mutilba¹,

Gomez-Acedo²,

Kortaberria³

et al. 2017

Preprint

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Assessment of Influence of Scanning Parameters on Uncertainty of Measurements Performed Using Laser Tracking System

Gruza

Gąska

Harmatys

et al. 2019

Lecture Notes in Mechanical Engineering

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Transmitter Positioning of Distributed Large-Scale Metrology Within Line-Less Mobile Assembly Systems

Nicksch

Hüttner

Schmitt

2022

Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021

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In Line-less Mobile Assembly Systems (LMAS) the mobilization of assembly resources and products enables rapid physical system reconfigurations to increase flexibility and adaptability. The clean-floor approach discards fixed anchor points, so that assembly resources such as mobile robots and automated guided vehicles transporting products can adapt to new product requirements and form new assembly processes without specific layout restrictions. An associated challenge is spatial referencing between mobile resources and product tolerances. Due to the missing fixed points, there is a need for more positioning data to locate and navigate assembly resources. Distributed large-scale metrology systems offer the capability to cover a wide shop floor area and obtain positioning data from several resources simultaneously with uncertainties in the submillimeter range. The positioning of transmitter units of these systems becomes a demanding task taking visibility during dynamic processes and configuration-dependent measurement uncertainty into account. This paper presents a novel approach to optimize the position configuration of distributed large-scale metrology systems by minimizing the measurement uncertainty for dynamic assembly processes. For this purpose, a particle-swarm-optimization algorithm has been implemented. The results show that the algorithm is capable of determining suitable transmitter positions by finding global optima in the assembly station search space verified by applying brute-force method in simulation.

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Advances in Large-Scale Metrology – Review and future trends

Cited by 181 publications

References 108 publications

Traceability on Machine Tool Metrology: A Review

Traceability on Machine Tool Metrology: A Review

Assessment of Influence of Scanning Parameters on Uncertainty of Measurements Performed Using Laser Tracking System

Transmitter Positioning of Distributed Large-Scale Metrology Within Line-Less Mobile Assembly Systems

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