ADVANCED CONCEPTS OF GD&T - Prolotek

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ADVANCED CONCEPTS OF GD&T

This course is based on ASME Y14.5 – 2009 Dimensioning and Tolerancing Standard. It is intended for designers, product engineers, manufacturing and assembly engineers, and quality engineers. This courseware is for participants with understanding on fundamental concepts of GD&T.

Advanced concepts include more in depth discussion on selected topics of GD&T that are not covered in fundamentals of GD&T. The examples included are more complex and industrial application oriented.

GD&T Fundamentals Review

GD&T skills Pre-requisite survey

GD&T fundamentals for further study

Interpretation of Feature and Feature of Size

Regular, element, complex, and interrupted feature; sub-feature

The terms “opposed,” “fully opposed,” “partially opposed, “size dimension,” and “cylindrical”

Importance of distinguishing between a feature and feature of size

Requirements and categories of a feature of size

Identifying and interpreting a complete, interrupted, partial, and bounded feature of size

Form Controls

Calculating the straightness tolerance value with application example

Calculating the flatness tolerance value with application example

Calculating the circularity tolerance value with application example

Calculating the cylindricity tolerance value with application example

The Datum System & Datum Feature Types

Importance and advantages of datum system.

Common misconceptions of datum system.

Common errors in datum usage

Common datum feature types and typical applications

Degrees of freedom restrained when each datum feature type is used

Datum Targets

Applications of datum targets

Specifying fixed and movable datum targets

Special datum target types

Tolerance of Position Usage

Applications of tolerance of position control

Tolerance of position control and material condition used

Profile Tolerances

Applications of profile control

Converting coordinate tolerances into profile callouts

The profile datum rule

Profile and Simultaneous Requirements

Simultaneous requirement applied to profile

Profile controls with separate requirements

Composite Profile Tolerancing

Composite profile tolerancing, rules, and advantages

Interpreting a composite profile application

Simultaneous and Separate Requirements

Simultaneous and separate requirements, effects and where they apply

Tolerance of position at MMC simultaneous requirement

Tolerance of position controls as separate requirements

Composite Position Tolerancing

Rules, advantages, and when to use it

“FRITZ” and “PLTZF”

Tolerance of position composite application

Multiple Single-Segment Tolerance of Position Tolerancing

Rules, advantages, and when to use it

Tolerance of position vs. composite tolerance of position

Conical Tolerance Zones

A conical tolerance zone and advantage of use

Specifying a conical tolerance zone in a tolerance of position application

When to use tolerance of position with a conical tolerance zone

Multiple Single-Segment Profile Tolerancing

Rules, advantages, interpretation, when to use it

Profile vs. a composite profile tolerance

Rigid/Non-Rigid Parts Definitions

Free state

Restrained state

Rigid part

Non-rigid part and part feature

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