JOHNSON COUNTY COMMUNITY COLLEGE
TECHNOLOGY DIVISION
DRAFTING/CAD/AUTOCAD
COURSE OUTLINE
Title: Mechanical Design and Drafting
Effective Term: Fall 2012
Number: DRAF 222
Credit Hours: 3
Contact Hours: 5
Course Type: Career
Lecture Hours: 2
Lab Hours: 3
Description:
Students successfully completing this course should be able to draw details and assembly views
of mechanical parts. The types of parts discussed in this class include castings, sheet metal
pieces, jigs and fixtures, and gauges. Important concepts include dimensioning, form and
position tolerancing, coordinate tolerancing, and calculations related to material allowances and
manufacturing. Students will use the Machinery’s Handbook, and other technical publications,
to research and design projects. Project assignments will be completed using computer-aided
drafting (CAD) software. This course is typically taught in the fall semester. 2 hrs lecture, 3 hrs.
lab/wk.
Associated Costs: These are additional (out-of-pocket) expense considerations that students
should expect in addition to the course tuition, fees, and textbooks. $40.
Supplies: Refer to the instructor's course syllabus for details about any supplies that may be
required.
Prerequisites: DRAF 123 Interpreting Machine Drawings
and
DRAF 230 Intermediate CAD: AutoCAD
And
DRAF 135 Graphic Analysis
And
DRAF 145 Introduction to Parametric Design: Inventor
Prerequisite and/or corequisite:
MATH 131 Technical Mathematics II
Textbook(s): For information see - http://bookstore.jccc.net
Course Fees: NONE
Course Objectives:
Upon successful completion of this course the student should be able to:
1.
2.
3.
4.
5.
6.
7.
Select and specify temporary fasteners.
Identify components and materials used in manufacturing.
Draw a casting drawing.
Identify and draw linkages and cams.
Explain and draw a jig or a fixture.
Specify and draw a gaging device.
Indentify sustainability in manufacturing standards
Content Outline & Competencies:
I. Temporary Fasteners
A. Specify minimum thread engagement for threaded fasteners.
B. Write a bottom tap and plug tap specification (metric and U.S.customary).
C. Specify machining processes for different fastener heads.
D. Identify grades of fasteners.
E. State a thread specification to join multiple work-pieces with one fastener.
F. Draw and specify the machining requirements to key a shaft to a hub rotationally.
G. Draw and specify the machining requirements to join a tapered key to a shaft.
II. Manufacturing Materials
A. Define carbon steel.
B. Define alloy steel.
C. Write the specifications for heat treatment processes.
D. Select tool steel for a specific application.
E. Describe the properties of alloy, and carbon steel.
F. Define the characteristics of tool steel.
G. Specify commercially available manufacturing components.
III. Castings
A. List five casting process and their advantages and disadvantages.
B. Define drawing and manufacturing terms related to castings.
C. Describe the forming process known as powder metallurgy.
D. List considerations of casting and powder metallurgy design.
E. Draw a casting and machine-casting drawing.
F. Specify surface finish requirements based on specific capital equipment.
IV. Cams and Linkage
A. Draw, dimension, and tolerance a face cam.
B. Draw and dimension a displacement diagrams.
C. Define linkage terms, and calculate.
D. Plot the paths of two linkages.
E. Identify common linkage schematic drawing symbols
F. Calculate vector quantities of force, displacement, velocity, and acceleration for a machine
element.
G. Resolve linkage vectors.
H. Calculate linkage instant centers.
V. Jigs and Fixtures
A. Describe how jigs and fixtures are used in industry.
B. List the factors that influence jig and fixture design.
C. List manufactures of commercially available jig and fixture components.
D. Select a commercially available jig or fixture component.
E. Describe a workpiece.
F. Select locating datums.
G. Select clamping devices.
H. Calculate fits for mating parts of a jig or fixture.
I. Design, draw, dimension, and tolerance a fixture for a specific workpiece.
J. Assign geometric and true position tolerances to a jig or workpiece.
VI. Gages
A. Identify types of gages.
B. Calculate gauging surface limits based on the rule of 1 and 10.
C. Identify manufactures of gage products.
D. Select a commercially available gage product.
E. Draw and specify correct tolerance dimensions for a gage.
VII. Sustainability in Manufacturing
A. Define sustainability in manufacturing.
B. Identify non-sustainable vs. sustainable methods
C. Describe the benefits of sustainable manufacturing
D. Apply sustainable methods of manufacturing
Methods of Evaluation of Competencies:
Evaluation of student mastery of course competencies will be accomplished using the following
methods:
50-60% Homework, reports, review questions, drafting assignments
15-25% Quizzes and Exams
15-25% Final Examination, and/or project
100% TOTAL
Grading criteria:
90 - Above = A
80 - 89 = B
70 - 79 = C
60 - 69 = D
Below 60 = F
Caveats: NONE
Disabilities:
If you are a student with a disability, and if you will be requesting accommodations, it is your
responsibility to contact Access Services. Access Services will recommend any appropriate
accommodations to your professor and his/her director. The professor and director will identify
for you which accommodations will be arranged.
JCCC provides a range of services to allow persons with disabilities to participate in educational
programs and activities. If you desire support services, contact the office of Access Services for
Students With Disabilities (913) 469-8500, ext. 3521 or TDD (913) 469-3885. The Access
Services office is located in the Success Center on the second floor of the Student Center.