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Geometric Dimensioning and Tolerancing
(GDT) was developed as an international language to
communicate exactly how a part should be made to achieve
the required functionality. When properly applied, GDT
is a powerful tool for achieving quality and for
reducing costs in design, manufacturing, and inspection.
The American Society of Mechanical Engineers (ASME)
document Y14.5M-1994 Dimensioning and Tolerancing is the
current US standard on this language. Our On-Site
Seminar Geometric Dimensioning and Tolerancing,
provides in-depth information on the use and
interpretation of this important standard.
The Seminar is designed for presentation to a mixed
audience of Engineering, Manufacturing, Purchasing, and
Quality Department personnel. The program can be
customized to meet the specific needs of:
 •
Engineering, Manufacturing, Purchasing,
 or Quality
Managers
•
Design, Manufacturing, or Production
Engineers
•
Part Programmers
•
Fixture Designers
•
Production Supervisors, Setup Personnel,
or Machine
Operators
•
Quality Engineers, Gage Designers, or
Inspectors
Geometric Dimensioning and Tolerancing consists
of 16 instructional units and requires approximately 32
to 40 hours for presentation. Participants receive a
copy of ASME Y14.5M-1994 (Reaffirmed 2004), copies of
selected illustrations, reprints of key articles and
technical papers, and additional materials. Various
presentation schedules are available to meet your
specific requirements.
Please
contact us to learn
how you can put the power of Geometric Dimensioning and
Tolerancing to work for your company.
To download the data sheet for this program, please
click
here.
(PDF 76 KB)
Seminar
Outline:
Unit 1 - Background
•
Introduction
•
References
•
Definitions
•
Fundamental Rules
•
Units of Measurement
•
Types of Dimensioning
•
Application of Dimensions
•
Dimensioning Features
•
Location of Features
Unit 2 - General Tolerancing
•
Direct Tolerancing Methods
•
Tolerance Expression
•
Interpretation of Limits
•
Single Limits
•
Tolerance Accumulation
•
Limits of Size
•
Applicability of RFS, MMC, and LMC
•
Screw Threads
•
Gears and Splines
•
Virtual/Resultant Condition
•
Angular Surfaces
•
Conical Tapers
•
Flat Tapers
•
Radius
•
Statistical Tolerancing
Unit 3 - Symbology
•
Use of Notes to Supplement Symbols
•
Symbol Construction
•
Geometric Tolerance Symbols
•
Feature Control Frame Placement
•
Identification of the Tolerance Zone
•
Tabulated Tolerances
Unit 4 - Datums
•
Immobilization of Part
•
Datum Features
•
Specifying Datum Features in a Order of
Precedence
•
Establishing Datums
•
Datum Targets
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Unit 5 - Positional Tolerancing
•
Positional Tolerancing
–
Method
–
Application to Base Line and Chain
Dimensioning
•
Fundamental Explanation of Positional
Tolerancing
–
Material Condition Basis
–
MMC as Related to Positional Tolerancing
–
Zero Positional Tolerance at MMC
–
RFS as Related to Positional Tolerancing
–
LMC as Related to Positional Tolerancing
–
Multiple Patterns of Features Located by
Basic
Dimensions Relative to Common
Datums
Unit 6 - Feature Pattern
Positional Tolerancing
•
Composite Positional Tolerancing
•
Projected Tolerance Zone
•
Nonparallel Holes
•
Counterbored Holes
•
Closer Control at One End of a Feature
•
Bidirectional Positional Tolerancing of
Features
Unit 7 - Other Positional
Tolerancing
•
Noncircular Features
•
Coaxiality Controls
•
Concentricity
•
Positional Tolerancing for Symmetrical
Relationships
•
Symmetry Tolerancing to Control the Median
Points
of Opposed or Correspondingly
Located
Elements of Features
•
Spherical Features
Unit 8 - Form Tolerancing
•
Form and Orientation Control
•
Specifying Form and Orientation Tolerances
•
Form Tolerances
–
Straightness
–
Flatness
–
Circularity (Roundness)
–
Cylindricity
Unit 9 - Profile Tolerancing
•
Profile Control
–
Profile Tolerancing
–
Tolerance Zone
–
Explanation of Profile Tolerance
–
Application of Datums
–
Combined Controls
–
Coplanarity
–
Profile Tolerance for Plane Surfaces
–
Profile Tolerance for a Conical Feature
–
Composite Profile
Unit 10 - Orientation
Tolerancing
•
Specifying Orientation Tolerances in Relation
to
Datum Features
•
Angularity
•
Parallelism
•
Perpendicularity
Unit 11 - Runout Tolerancing
•
Runout Tolerance
•
Free State Variation
Unit 12 - Principal Changes and
Improvements
Unit 13 - Formulas for
Positional Tolerancing
•
Formula Symbols
•
Floating Fastener Case
•
Fixed Fastener Case When Projected
Tolerance
Zone is Used
•
Provision for Out-of-Squareness When
Projected
Tolerance is Not Used
•
Coaxial Features
•
Limits and Fits
Unit 14 - Form, Proportion, and
Comparison of Symbols
Unit 15 - Former Practices
•
Definition for Feature of Size
•
Applicability of RFS, MMC, and LMC
•
Tangent Radii
•
Datum Feature Symbol
•
Projected Tolerance Zone
Unit 16 - Decision Diagrams for
Geometric Control
•
Purpose
•
Functional Requirements
•
Reference to Standard
•
Geometric Controls
•
Choosing Other Controls
•
Use of Modifiers
•
Datums |
