Full Content is available to subscribers

Subscribe/Learn More  >

Using Tolerance-Maps to Transfer Datum Plane From Design Tolerancing to Machining Tolerancing

[+] Author Affiliations
Ke Jiang, Jianhua Liu

Beijing Institute of Technology, Beijing, China

Joseph K. Davidson, Jami J. Shah

Arizona State University, Tempe, AZ

Paper No. DETC2013-12722, pp. V004T05A023; 10 pages
  • ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 4: 18th Design for Manufacturing and the Life Cycle Conference; 2013 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications
  • Portland, Oregon, USA, August 4–7, 2013
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5591-1
  • Copyright © 2013 by ASME


Datum transfer is usually carried out to satisfy requirements of fixture and operation in manufacturing process. Often such requirements are different than the functional requirements used when choosing tolerances during design. Reassignment and recalculation of tolerances are required to evaluate whether a machining scheme can reach the desired design specification. Since a planar feature are widely utilized in datum reference frame, this paper mainly focuses on the transfer of one datum plane to another parallel plane-segment with round or polygonal shape by using 3D Tolerance-Maps. Firstly, a parametric model about two parallel planar features is proposed to describe the geometric properties and spatial relationships between a design datum and a machining datum. Then, based on a variation analysis of plane-to-plane datum transfer, a more elaborate transformation is utilized to relate T-Maps (Patent No. 6963824) with M-Map. Next, several rigid mathematical inequalities are presented to describe the boundaries of primitive and transformed T-Maps for further accumulation and comparison. The largest possible machining tolerances are determined by fitting the M-Map inside the design T-Map. Analytical relations between the machining and design tolerances are extracted from cross-sections through both T-Maps. Lastly, an example is illustrated to show feasibility of the method.

Copyright © 2013 by ASME
Topics: Machining , Design



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In