An adaptive tolerancing algorithm for freeform profiles

Luca Pagani; Qunfen Qi; Jian Wang; Xiangqian Jiang; Paul J. Scott

doi:10.1016/j.procir.2018.04.044

An adaptive tolerancing algorithm for freeform profiles

Luca Pagani^*
, Qunfen Qi
, Jian Wang
, Xiangqian Jiang
, Paul J. Scott

^*Corresponding author for this work

Research output: Contribution to journal › Special issue (Academic Journal) › peer-review

Abstract

Manufacturing of freeform surfaces demands the development of tolerances based on the functionality of parts. Functionally critical portions of a surface can usually be described using the curvature of designed products. A uniform tolerance zone along the nominal freeform profile may not fulfill the functionality of the designed part, i.e. it allows the curvature to increase indefinitely inside the tolerance zone. This will affect greatly in the aerospace, automotive and other high value products. An adaptive tolerancing method based on the local curvature of a profile is presented to define smaller tolerance bands to reject non-functional products.

Original language	English
Pages (from-to)	185-189
Number of pages	5
Journal	Procedia CIRP
Volume	75
DOIs	https://doi.org/10.1016/j.procir.2018.04.044
Publication status	Published - 2018
Event	15th CIRP Conference on Computer Aided Tolerancing, CIRP CAT 2018 - Milan, Italy Duration: 11 Jun 2018 → 13 Jun 2018

Bibliographical note

Funding Information:
The authors gratefully acknowledge the UK’s Engineering and Physical Sciences Research Council (EPSRC) founding of the EPSRC Fellowship in Manufacturing: Controlling Variability of Products for Manufacturing (Ref: EP/K037374/1) and the EPSRC Future Metrology Hub (Ref: EP/P006930/1).

Publisher Copyright:
© 2018 The Authors. Published by Elsevier B.V.

Keywords

Curvature
Freeform
Tolerance
Tolerance zone

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title = "An adaptive tolerancing algorithm for freeform profiles",

abstract = "Manufacturing of freeform surfaces demands the development of tolerances based on the functionality of parts. Functionally critical portions of a surface can usually be described using the curvature of designed products. A uniform tolerance zone along the nominal freeform profile may not fulfill the functionality of the designed part, i.e. it allows the curvature to increase indefinitely inside the tolerance zone. This will affect greatly in the aerospace, automotive and other high value products. An adaptive tolerancing method based on the local curvature of a profile is presented to define smaller tolerance bands to reject non-functional products.",

keywords = "Curvature, Freeform, Tolerance, Tolerance zone",

author = "Luca Pagani and Qunfen Qi and Jian Wang and Xiangqian Jiang and Scott, \{Paul J.\}",

note = "Funding Information: The authors gratefully acknowledge the UK{\textquoteright}s Engineering and Physical Sciences Research Council (EPSRC) founding of the EPSRC Fellowship in Manufacturing: Controlling Variability of Products for Manufacturing (Ref: EP/K037374/1) and the EPSRC Future Metrology Hub (Ref: EP/P006930/1). Publisher Copyright: {\textcopyright} 2018 The Authors. Published by Elsevier B.V.; 15th CIRP Conference on Computer Aided Tolerancing, CIRP CAT 2018 ; Conference date: 11-06-2018 Through 13-06-2018",

year = "2018",

doi = "10.1016/j.procir.2018.04.044",

language = "English",

volume = "75",

pages = "185--189",

journal = "Procedia CIRP",

issn = "2212-8271",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - An adaptive tolerancing algorithm for freeform profiles

AU - Pagani, Luca

AU - Qi, Qunfen

AU - Wang, Jian

AU - Jiang, Xiangqian

AU - Scott, Paul J.

N1 - Funding Information: The authors gratefully acknowledge the UK’s Engineering and Physical Sciences Research Council (EPSRC) founding of the EPSRC Fellowship in Manufacturing: Controlling Variability of Products for Manufacturing (Ref: EP/K037374/1) and the EPSRC Future Metrology Hub (Ref: EP/P006930/1). Publisher Copyright: © 2018 The Authors. Published by Elsevier B.V.

PY - 2018

Y1 - 2018

N2 - Manufacturing of freeform surfaces demands the development of tolerances based on the functionality of parts. Functionally critical portions of a surface can usually be described using the curvature of designed products. A uniform tolerance zone along the nominal freeform profile may not fulfill the functionality of the designed part, i.e. it allows the curvature to increase indefinitely inside the tolerance zone. This will affect greatly in the aerospace, automotive and other high value products. An adaptive tolerancing method based on the local curvature of a profile is presented to define smaller tolerance bands to reject non-functional products.

AB - Manufacturing of freeform surfaces demands the development of tolerances based on the functionality of parts. Functionally critical portions of a surface can usually be described using the curvature of designed products. A uniform tolerance zone along the nominal freeform profile may not fulfill the functionality of the designed part, i.e. it allows the curvature to increase indefinitely inside the tolerance zone. This will affect greatly in the aerospace, automotive and other high value products. An adaptive tolerancing method based on the local curvature of a profile is presented to define smaller tolerance bands to reject non-functional products.

KW - Curvature

KW - Freeform

KW - Tolerance

KW - Tolerance zone

UR - https://www.scopus.com/pages/publications/85061993125

U2 - 10.1016/j.procir.2018.04.044

DO - 10.1016/j.procir.2018.04.044

M3 - Special issue (Academic Journal)

AN - SCOPUS:85061993125

SN - 2212-8271

VL - 75

SP - 185

EP - 189

JO - Procedia CIRP

JF - Procedia CIRP

T2 - 15th CIRP Conference on Computer Aided Tolerancing, CIRP CAT 2018

Y2 - 11 June 2018 through 13 June 2018

ER -

An adaptive tolerancing algorithm for freeform profiles

Abstract

Bibliographical note

Keywords

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