Who Should Attend?
This is the course that provides the foundation of GD&T
knowledge upon which all advanced courses rely. Anyone
involved with improving the quality of their parts should
attend. This course is designed for personnel whose work
requires them to either communicate, interpret or
manufacture products through the use of engineering drawings
and/or CAD models, such as (but not exclusive to): Design
Engineers, Mechanical Engineers, Production Engineers,
Quality Engineers, Gage Designers, Estimators, Tool
Designers, Inspectors, Drafters, Checkers, CAD Operators,
Machinists, Manufacturing Engineers, Recent
Engineering/Drafting Graduates, Managers, Concurrent
Engineering Group Members...
Course Description
This comprehensive ASME Y14.5 training is for all job
categories (and is the suggested prerequisite course for all
advanced GD&T course). This is an introductory, but
comprehensive, applications-based training program for all
technical personnel who must interpret and apply geometric
dimensioning and tolerancing. This course covers GD&T
principles, rules and applications, as well as the new
Y14,5-2018 symbology.
The goal of this course is not only to give the participants
a comprehensive knowledge of GD&T techniques but, through
the use of lectures, discussion, case histories and
application problems, the ability to apply these techniques
to their product line.
This course shows how to interpret design drawings and CAD
representation of product definitions that use the ASME
Y14.5-2018, 2009 and 1994 standards. It also explains
step-by-step procedures to apply the Y14.5 practices and
allow dimensioning and tolerancing professionals to express
their design requirements more clearly. The results are that
product representations are able to be more specific in
conveying tolerancing needs, products can be more easily
manufactured, and appropriate inspection techniques are
clarified.
This course allows the participants the opportunity to learn
and apply techniques in datum selection and tolerancing
optimization. It introduces techniques in calculating more
producible tolerances, choosing practical datum structures
and then shows how to measure each requirement. Do’s and
don’ts of proper tolerancing are taught and reinforced in
every segment of the course by showing how they apply to
realistic assembly tolerancing conditions.
The principles presented in this course will help you
interpret and apply the ASME Y14.5-20018, 2009 and 1994
standards, reduce drawing changes, reduce interpretation
errors, bid contracts with confidence, design for maximum
producibility, increase part tolerances and assure mating
parts will assemble.
Course Length & Class Size
We offer training in course lengths of 2 ½ to 5 days of
training...and using your company drawings as a basis for
this training.
Given sufficient training time, participants will be fully
capable of making good choices as to how the GD&T language
of symbology can best benefit your company and should be
proficient enough to immediately apply learned skills to
their every day, on-the-job situations.
Class Size: We only require that the classroom be of
sufficient size to accommodate the number of course
participants comfortably, classroom style seating.
Course Materials:
Each course attendee will receive the following course
materials:
The 576-page hardcover text entitled Geometric Dimensioning
and Tolerancing - Applications, analysis & Measurement [per
ASME Y14.5-2018]
The corresponding 367-page softcover, spiral-bound workbook
entitled WORKBOOK AND ANSWERBOOK for Geometric Dimensioning
and Tolerancing.
General Course
Outline by James D. Meadows for: Level 1:
Geometric Dimensioning and Tolerancing [per the
ASME Y14.5-2018, 2009 and 1994 Standards]
1) GD&T Basic Principles: rules, datum
selection criteria, fixed and floating fastener
formulas and do’s and don’ts for Geometric
Characteristic Symbols. A lecture and discussion
on the major principles of geometric
dimensioning and tolerancing will be given by
presenting a simple assembly of mating parts and
applying geometric controls to each part in the
assembly. Discussed are: the effects of Maximum
Material Condition (MMC), Least Material
Condition (LMC), Regardless of Feature Size (RFS
implied), Maximum Material Boundary (MMB), Least
Material Boundary (LMB) and Regardless of
Material Boundary (RMB implied) concepts, Inner
and Outer Boundaries, Virtual Condition and
Resultant Condition of features of size, and
gage design for position controls.
2) Geometric Characteristics and Their
Inspection All geometric characteristic symbols
will be explained in a food chain of symbology
to show how each symbol relates to the others
for control of size, form, orientation, profile,
runout and location. Geometric Characteristic
symbols covered include; flatness, straightness,
circularity, cylindricity, perpendicularity,
angularity, parallelism, profile of a line,
profile of a surface, circular runout, total
runout, concentricity (removed in Y14.5-2018),
symmetry and position (removed in Y14.5-2018).
This will give each participant a perspective of
how to choose exactly the right characteristic
for every step of the part definition.
Inspection of all characteristics will be
discussed and several options shown for each.
3) Datum selection, choosing the perfect
geometric characteristic for parts and
assemblies. Fixed fastener assembly mating part
tolerance formulas and the effects of modifiers
(MMC after datum features) are also emphasized A
more complex assembly will be used to explain
the proper selection of datum features and a
linear progression of geometric controls. The
fixed fastener formulas will be thoroughly
explained and used to calculate and distribute
geometric tolerances for maximum
manufacturability and functionality. Process
capability, producibility and functional product
requirements are considered and shown to work in
tandem to create the best tolerancing scheme
possible. Threaded holes, positional tolerancing,
projected tolerance zones and inspection
techniques are discussed.
4) Producibility and Measurement
Considerations How manufacturing processing can
influence datum selection without adversely
affecting part functionality. How to correctly
distribute tolerances in an assembly to reduce
difficulties in part manufacture. How to imply a
manufacturing and a measurement plan in
sequencing geometric controls.
5) Holding Direct vs. Indirect Functional
Relationships in an Assembly A floating fastener
assembly will be used to explain how important
functional relationships can be held using
different datum structures. How to increase
tolerances by proper datum selection is
discussed.
6) Application of Common Tolerancing
Methods and Datum Structures A series of
application problems are used to build
participants' knowledge and confidence in
applying common datum approaches and tolerancing
methods. Circular surfaces, planar surfaces,
free form surfaces, datum targets, free state
variation, the BOUNDARY concept for elongated
holes and other oddly configured features.
7) Commonalities in Tolerancing
Approaches on Dissimilar Part Geometries Profile of a Surface all-around, Two Single
Segment Position, Perpendicularity of Centerplanes, Simultaneous Gaging vs. Separate
Gaging Requirements, Analyzing Geometric
Tolerances, Angular Orientation Datums,
Analyzing Tolerances for Minimum and Maximum
Axial Separation, Wall Thickness and Housing
Requirements.
8) Design, Dimensioning and Tolerancing
of Functional Gages and Fixtures. Quality
Assurance Strategies and Measurement Planning
9) Converting from Plus and Minus
Tolerancing to Positional Tolerance
10) Composite Position vs. Two Single
Segment Positional Tolerancing
11) Composite Profile vs. Two Single
Segment Profile Tolerancing
12) Applying Position Tolerances to a
Complex Assembly with Multiple Datum Structures
for Floating
and Fixed Fastener Assembly Conditions
13) New concepts in Y14.5-2018 are
explained and discussed, such as: Dynamic
Profile, Vector Symbols, the return of True
Geometric Counterparts and much more.
The text and workbook used for the GD&T Level 1
course are the same text and workbook used for
any of the Advanced GD&T courses offered;
therefore, if you schedule any advanced GD&T
course, there would be no additional course
materials costs if the same attendees of Level 1
take the advanced Level 2 GD&T courses.
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CUSTOMIZED COURSE OUTLINE: The use of a sample packet
of your product drawings is a key element of this course as
a guide to the tailoring of information covered. To optimize
time spent in this course, a sample drawing package is
requested prior to the workshop for the instructor to
study/incorporate into his lesson plan. Then, in the class,
students will correctly apply the GD&T language to their
company’s product drawings.
Additionally, we will work with you to include in the above
generic course outline any specific topics you wish covered
in the workshop...and all at NO ADDITIONAL CHARGE.
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