Computer-assisted kinematic tolerance analysis of a gear selector mechanism with the configuration space method

Elisha Sacks, Leo Joskowicz, Ralf Schultheiss, Uwe Hinze

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations


This paper presents a case study in computer-assisted tolerancing with the configuration space method. We analyze part of a gear selector mechanism in an automotive automatic transmission. The model contains three complex parts with 99 functional parameters. The analysis, which takes less than a minute on a workstation, indicates that the critical kinematic variation occurs in third gear and identifies the parameters that cause the variation. The analysis, program handles general planar systems of curved parts with contact changes, including open and closed kinernatic chains. It computes the worst-case variation in the system kinematic function and detects potential failure modes due to unexpected qualitative variations in function, such as jamming. It constructs configuration space models of the kinematic variations of the pairs in the system then derives the system variation by composing the pair models.

Original languageAmerican English
Title of host publication25th Design Automation Conference
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages7
ISBN (Electronic)9780791819715
StatePublished - 1999
EventASME 1999 Design Engineering Technical Conferences, DETC 1999 - Las Vegas, United States
Duration: 12 Sep 199916 Sep 1999

Publication series

NameProceedings of the ASME Design Engineering Technical Conference


ConferenceASME 1999 Design Engineering Technical Conferences, DETC 1999
Country/TerritoryUnited States
CityLas Vegas

Bibliographical note

Funding Information:
Sacks is supported by NSF grants CCR-9617600 and CCR- 9505745 and by the Purdue Center for Computational Image Analysis and Scientific Visualization. Joskowicz is supported by a grant from the Authority for Research and Development, The Hebrew University of Jerusalem, Israel. Sacks and Joskow icz are supported by a Ford University Research Grant, the Ford ADAPT200 project, and by grant 98/536 from the Israeli Academy of Science.

Publisher Copyright:
Copyright © 1999 by ASME.


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