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 |
| 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
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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. Euspen, 2019. p. 264-267.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
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
PY - 2019/6
Y1 - 2019/6
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.
KW - Artefacts
KW - Freeform
KW - Material standards
KW - Minimum zone fitting
UR - http://www.scopus.com/inward/record.url?scp=85070962742&partnerID=8YFLogxK
M3 - Conference article in proceedings
SP - 264
EP - 267
BT - 19th International Conference of the European Society for Precision Engineering and Nanotechnology
PB - Euspen
ER -