Toleransevalg

Toleransevalg is a term used in Norwegian technical literature to describe the process of selecting and documenting acceptable toleranser for components and assemblies. It encompasses decisions about how much a dimension or physical property may vary while still ensuring function, interchangeability, and reliability. The concept is central to product development, manufacturing, and quality assurance, where toleranser affect fabrication costs, inspection effort, and yield.

Toleransevalg involves balancing competing objectives: tighter toleranser improve performance and fit but raise production costs; looser toleranser reduce costs but may compromise function or long-term reliability. The process typically includes defining functional requirements, performing tolerance analysis (worst-case or statistical), and incorporating manufacturability considerations. Common methods include worst-case analysis, Monte Carlo simulations, and tolerance stack-up studies, often supported by geometric dimensioning and tolerancing (GD&T) practices.

In practice, toleransevalg influences design choices, selection of manufacturing processes, and quality-control plans. It is applied across industries such as automotive, aerospace, machinery, and electronics, and is integrated in CAD/CAE workflows to ensure dimensions stay within specified limits throughout the product lifecycle.

Origin and usage: the term is constructed from toleranse (tolerance) and valg (choice), reflecting a deliberate decision-making process about allowable variation. Related concepts include toleranseanalyse, toleransegrenser, and standardization of toleranser through industry guidelines.

See also: Tolerance analysis, GD&T, Quality management, Design for manufacturability.