4/24/07
Erie Community College
6205 Main Street
Williamsville, NY 14221
Course Outline
A.
Unit Code and Course Title:
IT 210 Industrial Inspection/Metrology
B.
Curriculum/Program:
Industrial Technology
C.
Catalog Description:
A study of the theory and use of gauging policies and various
precision measurement instruments. Parts are inspected using such
instruments as comparators, sine bars, optical flats, dial indicators
and gauge blocks.
D.
Duration of Instruction:
150 minute periods, 1 period per week for 15 weeks
E.
Contact Hours:
3 contact hours per week, 2 credit course
F.
Suggested Text/Course Materials:
Fundamentals of Dimensional Metrology, Dotson
Delmar Publishing - 2002
G.
Course Outcomes:
Upon successful completion of this course the student will
be able to:
1. Explain basic inspection techniques.
2. Use a variety of inspection instruments to obtain accurate
measurements for checking tolerances and customer requirements.
3. Explain gauging policies and procedures.
H.
Program Competencies:
Apply a broad range of measurement techniques
(C.O. # 1-3)
I.
SUNY General Education
Knowledge Areas:
Not applicable
J.
ECC Graduate Learning
Outcomes (GLO)
1. Communicate effectively. (C.O. # 1 & 3)
2. Read and think critically. (C.O. # 2)
3. Apply appropriate mathematical procedures and quantitative
methods. (C.O. # 2)
9. Demonstrate adequate preparation for a career or continuing
education. (C.O. # 1-3)
Industrial Inspection/Metrology
Page 2
K.
Assessment of Student Learning: Two exams, lathe project and mill project.
L.
Library Resources:
M.
Topical Outline:
I
Introduction
A.
Basic Concepts
B.
Origin and Need
C.
Dimensions, Tolerance, Basic Size Limits
D.
Clearance and Allowance
E.
Interference
F.
Selective Assembly
G.
Classes of Fit
H.
Interchangeable Fits
1.
Basic Hole System
2.
Basic Shaft System
I
Zoning Assembly
II
III
Machinery’s Handbook-27th Edition, Industrial Press, 2004
Machining and Metalworking Handbook-3rd Edition,
McGraw-Hill, 2006
Dimensional Control
A.
Units of Length
1.
Yard and Meter
2.
Inch and Fraction
3.
Inch and Decimal
B.
Sight and Touch
C.
Measurement
1.
Direct measurement
2.
Indirect measurement
3.
Direct check measurement
Non-Precision Measurement
A.
Definition
B.
Steel Rules
1.
Classifications
2.
Applications
3.
Care and use
C.
Calipers
1.
Types
2.
Applications
3.
General rules for using
D.
Dividers
3 periods
1 period
3 periods
Industrial Inspection/Metrology
Page 3
Topical Outline Continued
E.
Combination Set
1.
Application of squaring head and scale
2.
Plain protractor
F.
Radius Gages
G.
Universal Surface Gage – Applications
IV
Micrometers
A.
Principle of micrometer
B.
Outside micrometers
1.
Component parts
2.
How to read
3.
Check for accuracy
4.
Inspection of parts
C.
Inside micrometer – Uses and applications
D.
Depth micrometer – Uses and applications
E.
Care, calibration and adjustment
V
Vernier Instruments
A.
Principle of vernier scale
B.
Vernier caliper
1.
Reading the vernier caliper
2.
Use on outside dimensions
3.
Use on inside dimensions
4.
Care and adjustment
C.
Vernier height gage – Uses
D.
Vernier micrometer
3 periods
VI
Plug, Ring and Snap Gages
A.
Termonology
B.
Characteristics
C.
Plug Gages
1.
Theory of limit plug gages
2.
Types
3.
Variations and special plug gages
4.
Use of plug gages
5.
Accuracy of plug gages
6.
Care of plug gages
D.
Ring Gages
1.
Standard ring gages
2.
Special ring gages
3.
Applications
4.
Care of ring gages
3 periods
Industrial Inspection/Metrology
Page 4
Topical Outline Continued
E.
Snap Gages
1.
2.
3.
4.
Types
Applications
Setting and adjustable snap gages
Care of snap gages
VII
Gaging Policy
A.
Need
B.
Basic factors
C.
Gage makers tolerances
D.
Unilateral and Bilateral Gage Tolerances
E.
Wear Allowance
F.
Ordnance practice
G.
Human error
3 periods
VIII
Precision Gage Blocks
A.
Industrial functions
B.
Gage block design
C.
Classifications and tolerances
D.
Selecting gage blocks for a required dimension
E.
“Wringing”
F.
Applications
G.
Care and use
1 period
IX
Dial Indicators
A.
Introduction
B.
Advantages
C.
Working Mechanism
1.
Range of travel
2.
“Nine o’clock” setting
3.
Indicator parts
D.
Types of Dial Indicators and Uses
1.
Plain dial indicator
2.
Universal test indicator
3.
Height measurements
E.
Dial Indicating Gages – Types and uses
F
Care and adjustment
3 periods
X
Precision Angle Measurement
A.
Units of measurement
B.
Bevel Protractor
1.
Reading
2.
Setting
3.
Applications
C.
Universal Angle Gages
D.
Bevel Gages
3 periods
Industrial Inspection/Metrology
Page 5
Topical Outline Continued
E.
F.
Sine Bar
1.
Theory
2.
Use
3.
Checking unknown angles
4.
Care
Plain Index Centers
XI
Comparators and Automatic Gaging
A.
Mechanical comparators
B.
Mechanical – Optical Comparators
1.
Principle
2.
Applications
C.
Electrical and Electronic Comparators
1.
Electricheck
D.
Air Comparitors
1.
Advantages
2.
Mechanism
3.
Applications
E.
Multicheck Comparators
F.
Automatic Gaging
6 periods
XII
Optical Instruments in Industrial Inspection
A.
Measuring Micrometer
1.
Advantages
2.
Types
B.
Tool Maker Microscope
1.
Description
2.
Applications
C.
Optical Comparator
1.
Optical system
2.
Floor type
3.
Bench comparators
D.
Measurement by Light Wave Interference
1.
Basic equipment
2.
Principles
3.
Gage block inspection
6 periods
XIII
Screw Threads and Thread Gages
A.
Elements of Screw Threads
1.
Thread terminology
2.
Standards
3.
Thread fits
4.
Control of threaded products
3 periods
Industrial Inspection/Metrology
Page 6
Topical Outline Continued
B.
Thread Gages and Gaging Methods
1.
Thread gage theory
2.
Thread plug gages
3.
Thread ring gages
4.
Tri-roll gages
5.
Thread snap gages
XIV
Surface Plates and Toolroom Specialties
A.
Surface Plates
B.
Bench Block
C.
Toolmaker Flat
D.
Angle Irons
E.
Parallesl
F.
V Blocks
G.
Squares
1 period
XV
Typical Inspection Problems
A.
Tapers
B.
Dovetails
C.
Concentricity and Eccentricity
3 periods
XVI
Surface Inspection
A.
Definitions
B.
Comparison Methods
C.
Direct Instrument Measurement
D.
Applications
XVIII Final Exam
N.
Prepared by: Sam Kassab, 1996