Datum Schemes for GD&T


Many problems we face in industry, especially dimensional concerns, have faulty datum schemes as their root cause. Datum schemes must be explicit, functional, and repeatable. If any of these requirements are not met, financial loss occurs.

This mid-level two-day course begins with a fast-paced review of the basics, so you can bring your GD&T skills in line with the 2009 and 2018 standards. Our primary focus is on datum strategies for assemblies and the detail components that comprise them. We teach you to spot datum problems so you can resolve these issues during product development.

Course Outline:

  • Introduction
  • Selective Review of the Basics
  • Fundamental of Datums
  • Rules and Details - ASME Y14.5 - 2009
  • Issues Regarding Part Restraint
  • Common Types of Datum Features
  • Datum Target Applications
  • Special Datum Applications
  • Common Datum Errors
  • Preventing Dimensional Problems

Key Course Objectives:
  • Review recent changes to ASME Y14.5 - 2018
  • Identify degrees of freedom constrained by datum features
  • Identify datum problems prior to manufacturing
  • Interpret the impact of datum boundary modifiers
  • Select most appropriate datum features in the right order

Instructor/Facilitator: Mark A. Morris was elected an American Society for Quality Fellow in 2013. Mark has taught in seven countries and in 24 of the United States. He has work experience in tooling and manufacturing as a machinist, toolmaker, gage builder, college instructor, technical writer, and quality professional in roles from Quality Engineer to Manager of Quality Planning to Director of Continuous Improvement. His expertise lies in quality engineering, dimensional management, reliability, maintainability, and quality systems. Credentials include undergraduate degrees in manufacturing engineering technology, industrial education, and metalworking; Master of Education degree from the College of Technology at Bowling Green State University; Certified Quality Engineer (CQE), Certified Reliability Engineer (CRE), and Certified Quality Auditor (CQA) certifications from the American Society for Quality; and Senior Level Geometric Dimensioning and Tolerancing Professional (GDTP) certification from the American Society of Mechanical Engineers. Mr Morris is an ASQ Validated Instructor with the ASQ Learning Institute. He presently serves as member of ASQ and Chair of the Ann Arbor chapter fo Society of Manufacturing Engineers (SME).

Participants taking this course with a manufacturing focus, have the opportunity to have 60% of the course cost paid for by the One Workforce Grant. For more information please contact Arika Davis at arikadavis1@grcc.edu or 616-234-3609.
This course is not currently scheduled. Please email us at workforcetraining@grcc.edu for information about the next offering or if you are a business looking for customized training.