Multiscale dimensional tolerance specifications established on shrinkage assessment in ceramic micro injection molding

Danilo Quagliotti*, Hans N. Hansen, Guido Tosello

*Corresponding author for this work

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Abstract

Taking advantage of a micro powder injection molding production of a critical functional component in a miniaturized mechanism, a method for the formulation of specification intervals was developed, based on the evaluation of the shrinkage. The synthesis allows to allocate tolerance intervals according to a desired risk of rejecting parts in future evaluations. Such specifications are formulated as a function of the shrinkage, optimizing its impact on different features of size independently of their shapes or dimensions. The method is of general validity for any molding process where the material undergoes a change in dimensions due to a phase transformation.
Original languageEnglish
JournalProcedia CIRP
Volume75
Pages (from-to)143-148
ISSN2212-8271
DOIs
Publication statusPublished - 2018
Event15th CIRP Conference on Computer Aided Tolerancing (CIRP CAT 2018) - Milan, Italy
Duration: 11 Jun 201813 Jun 2018
Conference number: 15
http://www.cirpcat2018.polimi.it/

Conference

Conference15th CIRP Conference on Computer Aided Tolerancing (CIRP CAT 2018)
Number15
CountryItaly
CityMilan
Period11/06/201813/06/2018
Internet address

Keywords

  • Shrinkage
  • Shrinkage uncertainty
  • Tolerance interval formulation

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