WELD 120 - Beginning Industrial Blueprint ReadingCredits: 2
Instructional Contact Hours: 2
Includes manipulation of basic fractions and decimals as applied to the reading of blueprints, reading measuring instruments, basic geometric figures, drafting and blueprinting procedures, basic orthographic projection auxiliary and sectional views, detail and assembly drawings, dimensioning and tolerances, title block, change block, list of materials, and notes. Credit may be earned in WELD 120 or DRF 120 but not both.
Prerequisite(s): None
Corequisite(s): None
Lecture Hours: 30 Lab Hours: 0
Meets MTA Requirement: None
Pass/NoCredit: Yes
Outcomes and Objectives 1. Describe the several kinds of industrial prints and explain their organization.
A. Read and use correct terms to distinguish between the various kinds of industrial print making methods including: blueprint, blue-line,
diazo, photocopy, and computer methods.
B. Identify and properly fold standard print sizes.
C. Define and explain: dimension, tolerance, print zone, title block, revision block, parts list, specified tolerance
D. Identify, read and use print scales.
E. Read prints to find specific title block information.
2. Use paper and pencil to clearly record and communicate specified information using sketched figures and hand lettered text.
A. Recognize, name, and sketch representations of points, lines, squares, rectangles, circles, arcs, and other specified plane geometric
figures.
B. View and sketch objects in two dimensions to correct proportions.
C. Make isometric and similar pictorial sketches of specified objects.
D. Prepare standard format orthographic multiview sketches of specified three dimensional objects.
3. Read and make measurements to specifications using scales and precision instruments.
A. Identify and read standard metric and inch engineering scales.
B. Demonstrate correct handling, use, and care of scales and precision measuring instruments.
C. Make measurements and read:
1. vernier calipers and micrometers
2. dial calipers and dial indicators.
4. Explain text information and conventional annotation practices of prints.
A. Identify ANSI standard line conventions, letter forms, and note conventions.
B. Locate, read, and explain print note and symbolic information.
5. Read standard multiview, sectional view, and auxiliary view prints.
A. Correlate objects and object features with corresponding ANSI standard multiview, sectional,
partial, enlarged feature, and auxiliary view print representations.
B. List and explain how orthographic views are selected, organized, and placed.
C. Recognize and distinguish between third-angle projection.
6. Read industrial prints to determine materials and manufacturing processes.
A. Identify manufacturing materials from written and symbolic information.
B. Interpret industrial prints to identify manufacturing methods and processes.
C. Read print data to interpret surface finish specifications.
D. Distinguish between computer-integrated manufacturing, computer-aided design and drafting,computer-aided manufacturing, and
computer-aided engineering.
E. Explain the information displayed in a quality control chart.
7. Read industrial prints to determine size, location, and tolerance dimensions.
A. Identify the ANSI tolerance standard for dimensions.
B. Read the value of specified dimension.
C. Calculate specified dimension tolerances.
D. Determine specified maximum material and least material conditions.
E. Distinguish between shaft basis and hole basis tolerance systems.
F. Calculate to determine clearance, allowance, or interference, fit conditions between specified features.
G. Read and explain information given in specified surface finish symbols.
8. Demonstrate ability to read and explain print data related to fasteners, springs, and other standard parts and features.
A. Identify ANSI standard screw thread representations.
B. Define screw thread feature terms.
C. Explain specified metric and Unified, and American National thread notes.
D. Explain information given in specifications for springs, pins, rivets, washers, retaining rings, keys, keyways, keyseats, and other standard
parts and features.
9. Demonstrate understanding of welding processes and welding process print symbols.
A. Explain common groups of welding processes including: Oxygen Gas, Shielded Metal Arc, Gas Metal Arc, and Gas Tungsten Arc.
B. Name the major parts of AWS welding symbols.
C. Identify the major types of welds.
D. Explain specified destructive and nondestructive weld tests.
E. Read and explain weld specifications.
10. Demonstrate ability to read orthographic and pictorial section view.
A. Explain the purpose of sections and section views as used on industrial prints.
B. Identify ANSI standard section view practices including full, half, offset, aligned, broken-out, auxiliary, revolved, and removed.
C. Identify ANSI conventional practices including aligned sections, unsectioned features, and conventional revolutions and breaks.
11. Demonstrate ability to read, interpret, and explain ANSI standard geometric dimensioning and tolerancing practices.
A. Distinguish between general and geometric tolerancing practices.
B. Explain the datum reference frame system for dimension and tolerance practices.
C. Correctly read prints with selected geometrically dimensioned and tolerance features.
D. Name and explain selected geometric characteristic symbols.
12. Demonstrate ability to read working drawings for specified manufacturing, assembly, and installation information.
A. Distinguish between assembly, detail, and installation prints.
B. List typical information presented with detail prints.
C. List typical information presented with assembly and installation prints.
D. Distinguish between the various kinds of assembly drawings.
E. Read detail working drawings for specified information.
F. Read assembly working drawings for specified information.
G. Read working drawing parts lists for specified information.
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