GD&T Fundamentals Based on ASME Y14.5-2018

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What do you need to know to create or interpret engineering drawings according to the ASME Y14.5-2018 Standard? This foundational-level Fundamentals of GD&T course teaches the terms, rules, symbols, and concepts of geometric dimensioning and tolerancing, as prescribed in the Standard.

More specifically, the course gives an in-depth explanation of geometric tolerances, their symbols, tolerance zones, applicable modifiers, common applications, and limitations. It explains Rules #1 and #2, form and orientation controls, the datum system, tolerance of position (RFS and MMC), runout, and profile controls. It also compares GD&T to the directly tolerance dimensioning method and explains why GD&T is the preferred method for the location, orientation, and form of part features.

The course includes 23 modules, with clear objectives, application examples, expert tips, and knowledge checks to help you learn and retain the concepts. You can review a section or module at any time to further improve your skills and confidence in applying the requirements in the ASME Y14.5-2018 Standard.

Objectives

Upon completion of this course, you will be able to:

• Explain the importance of standards on engineering drawings
• Describe the types of dimensions, tolerances, and notes
• Explain why geometric tolerancing is superior to coordinate tolerancing
• Interpret the general dimensioning symbols
• Define the key terms used in GD&T
• Recognize the symbols and modifiers used in GD&T
• Explain the rules used in GD&T
• Describe the concepts of worst-case boundary, virtual condition, and bonus tolerance
• Interpret the various types of tolerance (flatness, circularity, cylindricity, straightness, perpendicularity, parallelism, angularity, position, runout, and profile)
• Describe the datum system
• Interpret applications of datum targets, size datum features (RMB), and size datum features (MMB)

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