The Y14.5 standard is considered the authoritative guideline for the design language of geometric dimensioning and tolerancing (GD&T.) It establishes uniform practices for stating and interpreting GD&T and related requirements for use on engineering drawings and in related documents.
GD&T is an essential tool for communicating design intent — that parts from technical drawings have the desired form, fit, function and interchangeability. By providing uniformity in drawing specifications and interpretation, GD&T reduces guesswork throughout the manufacturing process — improving quality, lowering costs, and shortening deliveries.
Now, a consensus committee of experts has revised Y14.5 for 21st-century applications. Important changes address: concept of feature of size; datum references and degrees of freedom; composite position tolerances; surface boundaries and axis methods of interpretation; profile tolerances; and symbology and modifiers tools. Additionally, the subject matter has been restructured for better readability, with profile, orientation, and form now in separate sections, and material within sections reorganized.
Meet your Certified trainer
Joe DeSimone is the President of DeSimone Quality International, a Quality, productivity, engineering, training and consulting company. Joe has provided GD&T Implementation Training and consulting for many years. His clients include Allied-Signal, Prime Wheel, Casablanca Fan, Kwikset, Pacific Fab, Fairchild, and many others. Joe has taught GD&T, Quality Courses, and SPC at Los Angeles Trade Technical College.
Who Should Participate?
Answer: Designers, Manufacturers, Inspectors, and all who are involved with designing, making, inspecting, and procuring Quality products.
Course Outline
I. Introduction and Overview of ASME Y14.5 – 2009 Changes
II. Scope, Definitions, and Geometric Tolerancing
III. General Tolerancing and Related Principles
IV. Symbology
V. Datum Reference Frames
VI. Tolerances of Form
VII. Tolerances of Orientation
VIII. Tolerances of Location
IX. Tolerances of Profile
X. Tolerances of Runnout
XI. Appendices
Learning Objectives:
- - Understand GD&T methodologies and applications per ASME Y14.5M - 2009
- - Decrease part rejects by reducing part drawing interpretation errors.
- - Increase productivity by eliminating extra written instructions.
- - Increase effectiveness at communicating design requirements.
- - Apply different methods of inspecting GD&T.
- - Transition GD&T with ISO-9000, SPC, and Tolerance Stack Up efforts.
- - Refresh and update those with prior GD&T knowledge and experience
