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2024 | OriginalPaper | Chapter

10. Profile Tolerances

Author : Stefano Tornincasa

Published in: Technical Drawing for Product Design

Publisher: Springer International Publishing

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Abstract

A geometrical tolerance on a profile is one of the most versatile and powerful instruments that can be used for functional dimensioning, and is the tolerance most frequently used by designers. A profile may in fact be used to control the size, form, orientation and location of a feature. Because of the flexibility in the level of control that can be achieved with the profile tolerance, this control may be used to substitute the classical coordinate dimensioning method. The present chapter covers the ISO rules on profile tolerances in order to appropriately specify the control of a profile with a combination of the SZ, CZ, UF symbols and the bidirectional and unidirectional zones that are specified with profile tolerances. A composite profile tolerance is used in the ASME standards when the design applications require stricter tolerances on the form than is needed for the orientation or location of the same feature. The new ASME symbols, that is, From-To and dynamic profile, are presented.

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Footnotes
1
ISO: Profile of any line.
 
2
ISO: Profile of any surface.
 
Literature
1.
go back to reference ISO 17450-3:2016 Geometrical product specifications (GPS)—general concepts—part 3: toleranced features ISO 17450-3:2016 Geometrical product specifications (GPS)—general concepts—part 3: toleranced features
2.
go back to reference ISO 1660:2017 Geometrical product specifications (GPS)—geometrical tolerancing—profile tolerancing ISO 1660:2017 Geometrical product specifications (GPS)—geometrical tolerancing—profile tolerancing
3.
go back to reference ISO 5458:2018 Geometrical product specifications (GPS)—geometrical Tolerancing. Pattern and combined geometrical specification ISO 5458:2018 Geometrical product specifications (GPS)—geometrical Tolerancing. Pattern and combined geometrical specification
4.
go back to reference ASME Y14.5.1:2019 (2019) Mathematical definition of dimensioning and tolerancing principles. American Society of Mechanical Engineers, New York ASME Y14.5.1:2019 (2019) Mathematical definition of dimensioning and tolerancing principles. American Society of Mechanical Engineers, New York
5.
go back to reference ISO 1101:2017 Geometrical product specifications (GPS)—geometrical tolerancing—tolerances of form, orientation, location and run-out ISO 1101:2017 Geometrical product specifications (GPS)—geometrical tolerancing—tolerances of form, orientation, location and run-out
Metadata
Title
Profile Tolerances
Author
Stefano Tornincasa
Copyright Year
2024
DOI
https://doi.org/10.1007/978-3-031-51187-5_10

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