Prepared by: Brian Judycki
Fall 2008
Office:AB142-A
Office Phone:792-5313
Office Hours:As Announced
e-mail:
MOHAWKVALLEYCOMMUNITY COLLEGE
UTICA-ROME, NEW YORK
ENGINEERING TECHNOLOGIES & THE TRADES DEPARTMENT
COURSE OUTLINE
I.CATALOG DESCRIPTION:
MT221Tolerance Assembly DraftingC-1, P-6, Cr-4
This course integrates previous and current course work and applies it to the design of manufactured parts. Designing for easier and more economical manufacturing is emphasized. Topics include assigning tolerances based upon how the part is to function, common manufacturing process tolerances, limit dimensions, avoiding tolerance accumulation, datums, introduction to geometric dimensioning and tolerancing, ASME Y-14.5M-1994, and functional gaging.
Prerequisite:MT140 Drafting and Design Using AutoCAD
II.MATERIALS:
Text:Fundamentals of Geometric Dimensioning and Tolerancing, 2nd Edition, ISBN #9781428380530
by Krulikowski, by Cengage Learning
III.COURSE OBJECTIVES:
The student will demonstrate:
-The ability to make (CADD) assembly drawings and detail drawings from two-dimensional and three dimensional drawings and design layout sketches to accepted industrial standards, on vellum and mylar.
-The proper use of dimensioning fundamentals and the placement of dimensions on the views, to ANSI y14.5-1982 standards.
-The selection of fits for mating parts, specification of tolerances, specification of surface finishes, and the control of tolerance accumulations for machined components.
-The proper use and application of geometric tolerances for forms, position and location of features.
Student learning outcomes:
-The student will demonstrate the ability to make assembly drawings and detail drawings from two dimensional and three dimensional drawings and design layouts in CADD
-The student will demonstrate the proper use of dimensioning fundamentals and the placement of dimensions on the views, to ANSIy 14.5-1982 standards.
-The student will demonstrate the selection of fits for mating parts, specifications of tolerances, specifications of surface finishes, and the control of tolerance accumulations for machined components.
-The student will demonstrate the proper use and application of geometric tolerances for forms, position and location of features.
-The student will demonstrate the ability to distinguish between the use of different materials for various manufacturing processes.
-The student will demonstrate the ability to use proper line weights and styles according to ASME standards.
-The student will demonstrate the ability to dimension various mechanical parts with proper text labeling according to ASME standards
IV.DETAILED COURSE OUTLINE:
Week Read Topic Description
1HOCourse Introduction & Outline
TD-14Detailer's Responsibility
Introduction to Design & Working Drawings
MH 2382-87Drawing Standards
2TD-14Design & Working Drawings
Classification & Applications of Assembly Drawings
Bill of Material
MH 2382-87,2400-02Detail Drawings: information and checking
Title & Revisions Strips
3ANSI 1.1-1.9Dimensioning Review
TD-pp.330-332Application of Dimensions
GDT-1Dimensioning features
Location of features
Partial/Sectional Views
Rectangular, Polar & Cordal Dimensioning
Tabular & Arrowless Dimensioning
4-5ANSI 2.1-2.15General Tolerancing
MH 1524-1525Terminology
MH 1527-1538American National Standard Limits
MH 1517-1523Application of Allowances & Tolerances
Basic Hole/Basic Shaft System
MH1526Relation of Machining Processes
MH 2392-94Relationship to Surface Roughness
MH 358-366Tolerances on Standard Mill Forms
6TD-13Application of Standard Parts
MH 1046-66Unified Screw Threads ANSI y14.6-1978
MH 1677, 1710-1711Tap & Standard Drill Sizes
Specifications for:
MH 1022-37Dowel, Taper-grooved Pins
MH 1038-1045Retaining Rings
MH 871-94Keys and Keyseats
MH 1071-1099Metric Fasteners
7MH 2388-Surface Texture Specification
TD-pp.326-329Control & Production
Definition of Terms
Relation of Surface Roughness to Tolerance
Surface Texture Symbol ANSI y14.36-1978
8ANSI Appendix ADimensioning for Numerical Control
ANSI pp. 36-38 3-Axis Control Systems
Rectangular/Cartesian Coordinates
Point-to-Point & Coordinate Programming
Dimensioning & Tolerancing Guidelines
9GDT - 2,3Introduction to Geometric Dimensioning
Terminology & Symbols
ANSI Appendix CDatum Identification & Application
ANSI 4.1-4.5.6Datum Frame Concepts (3-2-1)
Datum Target Symbols
Centerline or Axis Datums
10-11ANSI Chapter 6Tolerance of Form, Profile, Orientation & Runout
Appendix CStraightness, Flatness, Circularity, Cylindricity, Profile, Parallelism,
GDT-5Perpendicularity, Angularity, Concentricity, and Runout
12GDT-4Material Condition Symbols
ANSI 1.3.12Maximum Material Condition
1.3.14Regardless of Feature Size
1.3.13Least Material Condition
1.3.15Virtual Condition
ANSI 2.7-2.8.4Limits of Size
13-15ANSI Chapter 5Positional Tolerance
Appendix BFundamental Explanation of:
Conventional vs. Position Tolerancing
Feature Pattern Location
Projected Tolerance Zone
Rectangular & Polar Coordinate Methods
Noncircular Features
Symmetry
FINAL GRADE:
Based upon the following:
Lab Assignments 75%
Homework Assignment25%
GENERAL COURSE POLICY:
1.Each student is expected to attend all classes and labs for the full duration of time scheduled. Excessive absenteeism may lead to dismissal from the course with a failing grade.
2.All classes and labs will start and end on time - be prompt.
3.In the event of extended illness, accident or personal emergency, it is the student's responsibility to
notify the instructor as soon as possible for the proper procedure for completing missed assignments.
4.Students are expected to work quietly on lab assignments at designated work stations during the
5.Lab assignments are due on specified dates, late assignments are subject to a 10% reduction in grade within 5 school days. Any lab beyond the extension date will not be accepted and a grade of zero will result.
6.Quizzes will be announced. There will be no make-ups allowed unless covered by a documented medical excuse.
7.All drawing assignments will include the folded master and "blueprint" copy.
8.Each student is responsible to clean-up his/her work station before leaving the lab. Failure to comply will result in a 5% grade reduction on each occurrence.
To the students of MT221 Tolerance and Assembly Drafting:
Most engineering departments still rely on the manual drafting and intellectual skills of a detailer to describe a part's physical shape. The detailer translates the ideas, rough design sketches, specifications and calculations of engineers into working drawings and assemblies, which are used in the manufacturing and assembly of the product.
With the advent of CAD/CADD, the drafter has become more productive; since the system produces tedious and repetitious work, and is much faster than manual drawing. However, the system cannot think. The need to learn traditional methods of drawing and related technical information is necessary.
To prepare their drawings, detailers use instruments, engineering handbooks, tables, charts, reference manuals, part and manufacturers' catalogs. Also, they may make calculations and judgment decisions for solving technical problems.
Detailers make drawings of each part shown on the layout, giving dimensions, tolerances, materials, and any other information necessary to make detailed drawings clear, accurate, and complete for use by production personnel.
Your drawing assignments will require you to utilize all classroom and book information in order to prepare engineering drawings to accepted standards. This will necessitate that the student:
1.Attend all class and lab periods.
2.Do homework at home and reserve lab time for drafting
3.Keep and review notes
4.Ask questions and read the assignments
5.Think how classroom information is to be applied to the assignments
6.Practice good drafting practices and techniques
- Produce a clear, sharp, accurate and complete drawing that will yield good clear prints.
DISABILITY STATEMENT
I would appreciate hearing from anyone in the class who has any type of disability (e.g., physical, learning, psychiatric, vision, hearing, etc.) which may require some special accommodation. Please see me during my office hours so that we can discuss your needs. Before services can begin, you must also contact the Disability Services Office, 792-5644, in AB153 on the Utica Campus. (For classes on the Rome Campus, students should contact the Student Services Office, PC A30, 334-7709). They are the staff members who review your documentation, determine eligibility for accommodations, and help determine what those accommodations will be.
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COURSE NAME:___MT221 Tolerance & Assembly Drafting______
DATE FACULTY NAME CHANGE INPUT MEASUREMENT ASSESSMENT ACTION
5/5/08 / B. Judycki / Catalog Description1