UMTRI Project

Tolerance Adjustment Process for 3D Noncontact Measurement Data

Sponsor: CogniTens, Ltd.
Investigator: Patrick Hammett
03/31/2006 - 11/30/2006

During part approval processes for stamping and automotive body assembly processes, manufacturers routinely make tolerance adjustments to allow stamped parts to slightly deviate from their original design intent provided they produce a high quality final body assembly. These adjustment processes were developed for discrete point measurement systems, involving larger sample sizes to estimate process stability and capability before making tolerance adjustment recommendations. As manufacturers adopt 3D non-contact measurement systems, many of these traditional tolerance adjustment processes require modification to better align with the capabilities of this technology. The purpose of this project is to develop a tolerance adjustment algorithm to support 3D non-contact measurement and provide an analysis of its effectiveness for new stamped parts.

This project will involve developing a tolerance adjustment process for 3D Non-contact Measurement and incorporating this analysis process into existing software