|
Engineering
Drawing Interpretation
Root cause failure analysis
consistently reveals that many manufacturing technicians and inspectors lack
basic engineering drawing interpretation skills. Engineering
Drawing Interpretation is a 10-class, 20-hour program of instruction
focused on developing manufacturing and quality assurance technician abilities
to read and understand engineering drawings. The Engineering
Drawing Interpretation program provides manufacturing and quality
assurance personnel with the ability to:
-
Understand
basic engineering drawing concepts and definitions, including drawing title
blocks, views, datums, zones, notes, parts lists, and other features.
-
Interpret
basic dimensions and tolerances, including geometric dimensioning and
tolerancing.
-
Understand
drawing features unique to the client's industry.
-
Understand
basic configuration management concepts.
The
Engineering Drawing Interpretation
program can be presented on site either after hours or prior to the start of the
work day in 2-hour sessions, 1 day per week, for 10 weeks.
The training approach includes an initial drawing interpretation skills
assessment, lectures, interactive discussion, training exercises, and a final
examination.
Materials
-
Elementary
Blueprint Reading for Machinists,
David L. Taylor, Delmar Publishers.
-
Modern
Geometric Dimensioning and Tolerancing,
Lowell W. Foster, NTMA Publishers.
-
Class
notes, homework assignments, examinations, and other materials.
Who Should
Attend
Manufacturing
supervisors, manufacturing lead personnel, manufacturing technicians, quality
assurance supervisors, and quality assurance inspectors should attend this
training.
Engineering
Drawing Interpretation Syllabus
-
Class
1: Introduction to Engineering
Drawings.
Initial drawing interpretation examination.
The need for engineering drawings.
Actions involved in producing and issuing drawings.
Drawing reproduction. Where
drawings are needed and who uses them.
Level 1, 2, and 3 drawings. ANSI
Y14.5 overview. Homework
assignment.
-
Class
2: Engineering Drawings and
Drawing Control.
Initial drawing examination results review. Drawings encountered in
the manufacturing environment. Assembly,
detail, altered item, mechanical schematic, exploded assembly, and tooling
drawings. Engineering changes
and the configuration management process.
The ECO process. Drawing
control systems. Class
exercise. Homework assignment.
-
Class
3: Drawing Arrangement and
Views.
Drawing structure. The
need for different drawing sizes. Locating
information using zones. Drawing
notes and parts lists. Title,
tolerance, and application blocks. Drawing
views. Basic orthogonal
projection concepts. One, two,
and three view drawings. Auxiliary
views. Class exercise.
Homework assignment.
-
Class
4: Dimensioning Fundamentals I.
Drawing scales and units of measure.
Fractions and decimals. Line
types and line interpretation. Size
and location dimensions. Angular
dimensions. Hole dimensions. Pattern
dimensioning features. Simple
dimensioning and tolerancing. Class
exercise. Homework assignment.
-
Class
5: Dimensioning Fundamentals II.
Countersinks, counterbores, and spot faces.
Machining symbols. Screw
threads. Minimum and maximum
tolerance conditions. Unilateral
and bilateral tolerance conditions. Baseline
and chain dimensioning. Mating
parts tolerance evaluation. Tolerance accumulation.
The relationships between processes, statistical process control, and
tolerances. Class exercise.
Homework assignment.
-
Class
6: Introduction to Geometric
Dimensioning and Tolerancing.
Fundamental geometric dimensioning and tolerancing principals.
Basic dimensions. Feature
control frames and placement. Datum
feature symbol and placement. Other
geometric symbols. Regardless of Feature Size considerations.
Relationship of form to size. Class
exercise. Homework assignment.
-
Class
7: Location Tolerance
Fundamentals I.
Positional tolerance methods. Comparing
positional tolerance zone to coordinate tolerance zone.
Maximum material condition considerations.
Interpreting and applying “bonus”
tolerances. Class
exercise. Homework assignment.
-
Class
8: Location Tolerance
Fundamentals II.
Floating fasteners. Fixed
fasteners. Interpreting
specified and implied datums. Inspection
setup approaches. Statistical
tolerancing considerations. Common geometric dimensioning and tolerancing
interpretation problems. Class
exercise. Homework assignment.
-
Class
9: Form and Orientation
Tolerance Fundamentals.
Flatness, straightness, circularity, and cylindricity.
Perpendicularity, angularity, and parallelism.
Surface and line profiling. Application
examples. Class exercise.
Homework assignment.
-
Class
10: Course Review and Summary.
Course material review. Questions
and answers. Final examination.
|