Material standards design for minimum zone fitting of freeform optics

Yassir Arezki; François Lepretre; Pavel Psota; Rong Su; Ville Heikkinen; Xiangchao Zhang; Na Cai; Youichi Bitou; Richard Leach; Vít Lédl; Nabil Anwer; Charyar Mehdi-Souzani; Hichem Nouira

Material standards design for minimum zone fitting of freeform optics

Yassir Arezki (Corresponding author), François Lepretre, Pavel Psota, Rong Su, Ville Heikkinen, Xiangchao Zhang, Na Cai, Youichi Bitou, Richard Leach, Vít Lédl, Nabil Anwer, Charyar Mehdi-Souzani, Hichem Nouira

BA1702 Length metrology

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

In most cases, ultra-high-precision coordinate measuring machines (CMMs) are used to measure manufactured parts especially in the presence of freeform surfaces. The obtained data should be then processed to determine a quality measure of the surface. The least value of peak-to-valley (PV) is the widely used quality measure since it conforms to the ISO Geometrical and Product Specification (GPS) standards. To determine the minimum value of PV, a number of fitting methods exist but minimum zone fitting is the most suitable since it directly minimizes the PV. In the measurement process, fitting algorithms are essential elements. For this reason, their quality must be assessed as well; this could be achieved using either softgauges or material artefacts. In this paper, a design of a reference thermo-invariant material standard for minimum zone fitting is suggested and manufactured. The artefact was then measured by a number of partners participating to the FreeFORM 15SIB-01 project so as a comparison could be made in the light of gathered measurements.

Original language	English
Title of host publication	19th International Conference of the European Society for Precision Engineering and Nanotechnology
Subtitle of host publication	EUSPEN 2019
Editors	Richard K. Leach, D. Billington, C. Nisbet, D. Phillips
Publisher	Euspen
Pages	264-267
ISBN (Electronic)	9780995775145
Publication status	Published - Jun 2019
MoE publication type	A4 Article in a conference publication
Event	19th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2019 - Bilbao, Spain Duration: 3 Jun 2019 → 7 Jun 2019

Conference

Conference	19th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2019
Abbreviated title	EUSPEN 2019
Country	Spain
City	Bilbao
Period	3/06/19 → 7/06/19

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Keywords

Artefacts
Freeform
Material standards
Minimum zone fitting

Cite this

Arezki, Y., Lepretre, F., Psota, P., Su, R., Heikkinen, V., Zhang, X., Cai, N., Bitou, Y., Leach, R., Lédl, V., Anwer, N., Mehdi-Souzani, C., & Nouira, H. (2019). Material standards design for minimum zone fitting of freeform optics. In R. K. Leach, D. Billington, C. Nisbet, & D. Phillips (Eds.), 19th International Conference of the European Society for Precision Engineering and Nanotechnology: EUSPEN 2019 (pp. 264-267). Euspen.

Arezki, Yassir ; Lepretre, François ; Psota, Pavel ; Su, Rong ; Heikkinen, Ville ; Zhang, Xiangchao ; Cai, Na ; Bitou, Youichi ; Leach, Richard ; Lédl, Vít ; Anwer, Nabil ; Mehdi-Souzani, Charyar ; Nouira, Hichem. / Material standards design for minimum zone fitting of freeform optics. 19th International Conference of the European Society for Precision Engineering and Nanotechnology: EUSPEN 2019. editor / Richard K. Leach ; D. Billington ; C. Nisbet ; D. Phillips. Euspen, 2019. pp. 264-267

@inproceedings{be17fb8a697246548d6da7e4e46253b3,

title = "Material standards design for minimum zone fitting of freeform optics",

abstract = "In most cases, ultra-high-precision coordinate measuring machines (CMMs) are used to measure manufactured parts especially in the presence of freeform surfaces. The obtained data should be then processed to determine a quality measure of the surface. The least value of peak-to-valley (PV) is the widely used quality measure since it conforms to the ISO Geometrical and Product Specification (GPS) standards. To determine the minimum value of PV, a number of fitting methods exist but minimum zone fitting is the most suitable since it directly minimizes the PV. In the measurement process, fitting algorithms are essential elements. For this reason, their quality must be assessed as well; this could be achieved using either softgauges or material artefacts. In this paper, a design of a reference thermo-invariant material standard for minimum zone fitting is suggested and manufactured. The artefact was then measured by a number of partners participating to the FreeFORM 15SIB-01 project so as a comparison could be made in the light of gathered measurements.",

keywords = "Artefacts, Freeform, Material standards, Minimum zone fitting",

author = "Yassir Arezki and Fran{\c c}ois Lepretre and Pavel Psota and Rong Su and Ville Heikkinen and Xiangchao Zhang and Na Cai and Youichi Bitou and Richard Leach and V{\'i}t L{\'e}dl and Nabil Anwer and Charyar Mehdi-Souzani and Hichem Nouira",

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Arezki, Y, Lepretre, F, Psota, P, Su, R, Heikkinen, V, Zhang, X, Cai, N, Bitou, Y, Leach, R, Lédl, V, Anwer, N, Mehdi-Souzani, C & Nouira, H 2019, Material standards design for minimum zone fitting of freeform optics. in RK Leach, D Billington, C Nisbet & D Phillips (eds), 19th International Conference of the European Society for Precision Engineering and Nanotechnology: EUSPEN 2019. Euspen, pp. 264-267, 19th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2019, Bilbao, Spain, 3/06/19.

Material standards design for minimum zone fitting of freeform optics. / Arezki, Yassir (Corresponding author); Lepretre, François; Psota, Pavel; Su, Rong; Heikkinen, Ville; Zhang, Xiangchao; Cai, Na; Bitou, Youichi; Leach, Richard; Lédl, Vít; Anwer, Nabil; Mehdi-Souzani, Charyar; Nouira, Hichem.

19th International Conference of the European Society for Precision Engineering and Nanotechnology: EUSPEN 2019. ed. / Richard K. Leach; D. Billington; C. Nisbet; D. Phillips. Euspen, 2019. p. 264-267.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Material standards design for minimum zone fitting of freeform optics

AU - Arezki, Yassir

AU - Lepretre, François

AU - Psota, Pavel

AU - Su, Rong

AU - Heikkinen, Ville

AU - Zhang, Xiangchao

AU - Cai, Na

AU - Bitou, Youichi

AU - Leach, Richard

AU - Lédl, Vít

AU - Anwer, Nabil

AU - Mehdi-Souzani, Charyar

AU - Nouira, Hichem

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N2 - In most cases, ultra-high-precision coordinate measuring machines (CMMs) are used to measure manufactured parts especially in the presence of freeform surfaces. The obtained data should be then processed to determine a quality measure of the surface. The least value of peak-to-valley (PV) is the widely used quality measure since it conforms to the ISO Geometrical and Product Specification (GPS) standards. To determine the minimum value of PV, a number of fitting methods exist but minimum zone fitting is the most suitable since it directly minimizes the PV. In the measurement process, fitting algorithms are essential elements. For this reason, their quality must be assessed as well; this could be achieved using either softgauges or material artefacts. In this paper, a design of a reference thermo-invariant material standard for minimum zone fitting is suggested and manufactured. The artefact was then measured by a number of partners participating to the FreeFORM 15SIB-01 project so as a comparison could be made in the light of gathered measurements.

AB - In most cases, ultra-high-precision coordinate measuring machines (CMMs) are used to measure manufactured parts especially in the presence of freeform surfaces. The obtained data should be then processed to determine a quality measure of the surface. The least value of peak-to-valley (PV) is the widely used quality measure since it conforms to the ISO Geometrical and Product Specification (GPS) standards. To determine the minimum value of PV, a number of fitting methods exist but minimum zone fitting is the most suitable since it directly minimizes the PV. In the measurement process, fitting algorithms are essential elements. For this reason, their quality must be assessed as well; this could be achieved using either softgauges or material artefacts. In this paper, a design of a reference thermo-invariant material standard for minimum zone fitting is suggested and manufactured. The artefact was then measured by a number of partners participating to the FreeFORM 15SIB-01 project so as a comparison could be made in the light of gathered measurements.

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M3 - Conference article in proceedings

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BT - 19th International Conference of the European Society for Precision Engineering and Nanotechnology

A2 - Leach, Richard K.

A2 - Billington, D.

A2 - Nisbet, C.

A2 - Phillips, D.

PB - Euspen

T2 - 19th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2019

Y2 - 3 June 2019 through 7 June 2019

ER -

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