CCOG for MT 155 archive revision 155
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- Effective Term:
- Fall 2020 through Spring 2022
- Course Number:
- MT 155
- Course Title:
- Mechanical Systems
- Credit Hours:
- 5
- Lecture Hours:
- 30
- Lecture/Lab Hours:
- 40
- Lab Hours:
- 0
Course Description
Intended Outcomes for the course
Upon completion of the course students should be able to:
- Explain, trace, and describe the flow of mechanical energy in a mechatronic system.
- Describe how a change to one part of a system can affect the rest of the system.
- Differentiate between different types of gear drives, drive trains, sprocket systems, and mechanical drives using belts, bushings, bearings, and seals.
- Identify appropriate use of oils and grease in relation to gear drives, drive trains, sprocket systems, and mechanical drives using belts, bushings, bearings, and seals.
- Correctly apply mechanical material analysis on shafts, couplings, and sealing devices to determine proper lubrication.
- Describe the types, construction, and power limitations of clutches and brakes.
- Describe the types, styles, and maintenance requirements of linear drives and power transmission.
- Describe the types, styles, and maintenance requirements of flexible elements.
- Analyze a malfunctioning mechanical system, apply failure modes and effects analysis, and evaluate the outcome.
- Follow safety regulations, use appropriate protective equipment, and operate equipment according to safety protocols.
Course Activities and Design
The course will include instructor delivered lectures and demonstrations stressing key topics in the course. In preparation for the lecture portion of the course, students will be expected to complete all reading and homework assignments. Students will also reinforce and practice concepts learned in a laboratory setting.
Outcome Assessment Strategies
Outcomes are assessed based on course homework, quizzes, labs, and exams
Course Content (Themes, Concepts, Issues and Skills)
a. The U.S. Occupational Safety and Health Administration (OSHA) and Its Role
b. Material Safety Data Sheets (MSDS)
c. Safe Dress
d. Personal Protective Equipment (PPE)
e. Confined Space
f. Electrical Safety
g. Mechanical Transmission Safety
h. Machine Guarding
i. Log Out Tag Out (LOTO)
Hand Tools and Fasteners1. Hand Tools
a. Screwdrivers
b. Pliers
c. Wrenches
d. Socket Tools
e. Hammers
f. Chisels and Punches
g. Hacksaws and Files
h. Taps and Dies
i. Measuring Tools
1. Fasteners
a. Thread Definitions
b. Fits and Grades
c. Types of Threaded Fasteners
d. Types of Nuts
e. Classes of Washers
f. Removing Damaged Fasteners
g. Key Fasteners
Mechanical Principles I: Potential and Kinetic Energy, Torque, Speed1. Torque and Torque Wrenches
2. Principles of Mechanical Systems
a. Energy
b. Force
c. Rotational Speed
d. Work
Mechanical Principles II: Basic Machines, Efficiency, and Frictiona. Basic Mechanical Machines
b. Mechanical Efficiency
c. Mechanical Rate
d. Power
e. Friction
Introduction to Troubleshooting; Lubrication1. Introduction to Troubleshooting
2. Lubrication
Bearings Basics: Bearing Principles and Bearing Types1. Basic Mechanical Principles of Bearings
a. Friction
i. Friction as a Waste of Energy
ii. Friction and the Role of Heat
b. Shafts
i. Materials
ii. Stresses
iii. Vibration and Critical Speed
iv. Fits and Clearances
c. General Bearing Classification and Selection
i. Load Ratings
ii. Life
iii. Tolerances
iv. Speed
v. Temperature
vi. Lubrication
vii. Numbering systems
2. Types of Bearings
a. Plain (Journal) Bearings
i. Classification
ii. Material
iii. Load Ratings
iv. Lubrication
b. Ball and Roller Bearings
i. Classification
ii. Material
iii. Load Ratings
iv. Lubrication
Bearing Maintenance, Troubleshooting, and Installation1. Lubrication
a. Oil vs. Grease
b. Temperature and Viscosity
c. Determining the Correct Lubricant for a Particular Application
2. Working with Bearings
a. Basic Rules
i. Cleaning
ii. Moisture Avoidance
iii. Handling
iv. Spinning with Compressed Air
3. Bearing Troubleshooting
a. Indicators of Failure
4. Bearing Failures
a. Failure Modes of Different Types of Bearings
5. Replacing Bearings
a. Removal
b. Installation
i. Mechanical Methods
ii. Thermal Methods
Couplings: Coupling Types, Installation, and Coupling/Shaft Alignment1. Coupling Types
a. Rigid
b. Flexible
c. Chain and Gear
d. Jaw and Slider
e. Elastomeric
2. Choosing the Correct Coupling
3. Installing Couplings
a. Review Types of Fit
b. Heating Couplings
c. Key Size
d. Torqueing Bolts
e. Location of Lubrication Fittings
f. Runout
g. Soft Foot
h. Shims and Shim Size
4. Coupling/Shaft Alignment
a. Types of Misalignment
b. Straightedge
c. Single Dial Indicator
d. Dual Dial Indicator
e. Reverse Dial Indicator
f. Laser
Belt Drive Systems I1. Mechanical Power Transmission Systems
a. Generic Components
b. Power Flow
c. Safety
2. Belt Drive Systems I
a. Terminology
i. Driver Sheave
ii. Driving Sheave
iii. Belt Pitch
iv. Arc of Contact
v. Center of Distance
vi. Speed Ratio
b. Types of Belts
c. Belt Standardization
d. Belt Length Calculations
e. Replacing a V-Belt
f. Belt Alignment
Belt Drive Systems II1. Belt Drive Systems II
a. Sheave Replacement and Alignment
b. Belt Tension Measurement and Adjusting
c. Flat Belt Splicing
d. V-Belt Maintenance
e. Timing Belt Drives
f. Timing Belt Sheaves
g. Installing Timing Belts
h. Tensioning Timing Belts
Chain Drive Systems I1. Chain Drive Power Transmission Systems
a. Catastrophic Chain Failures
b. Power Flow
c. Safety
2. Chain Drive Systems I
a. Advantages and Disadvantages of Chain Drives
b. Types of Chain Drive Systems
i. Horizontal
ii. Vertical
iii. Systems with Idlers
iv. Multi-shaft Drives
c. Chain Construction
i. Links
ii. Offset Pins
iii. Cotter Pins
iv. Rollers
v. Bushings
vi. Spring Clips
vii. Link plates
d. Types of Industrial Chains
i. Roller Chain
ii. Silent Chain
iii. Engineered-class Chain
iv. Cast Chain
e. System Terminology
i. Driver Sprocket
ii. Driven Sprocket
iii. Chain Pitch
iv. Center Distance
v. Chain Length
vi. Chain Rating
vii. Ultimate Strength
viii. Pitch Diameter
f. Roller Chain Numbering Systems
g. Sprockets and Sprocket Hub Design
i. Arm
ii. Solid
iii. Hub Classes
h. Sprocket Mounting
i. Calculate Shaft Speed and Torque
Chain Drive Systems II1. Chain Drive Systems II
a. Roller Chain Drive Selection
i. Speed Ratio
ii. Service Factors
iii. Calculate Chain Length
b. Drive Chain Installation
i. Chain Tensioning
ii. Measuring Chain Sag
iii. Removing chains with Master Links
iv. Test Running
v. Lubrication
c. Preventive Maintenance
d. Care of Stored Chain
e. Troubleshooting Chain Drives
Gear Drive Systems I1. Gear Drives
a. Generic Components
b. Power Flow
c. Safety
d. Advantages and Disadvantages
2. Gear Drive Systems I
a. Terminology
b. Open and Enclosed Drives
c. Gear Definitions
3. Types of Gears
a. Spur
b. Helical
c. Bevel
d. Worm
4. Types of Gear Drives
a. Shaft-mounted
b. Worm Gear
c. Miter Boxes
5. Calculation of Speed Ratios, Shaft Speeds, and Torque
6. Open Gear Lubrication
7. Open Gear Troubleshooting
Gear Drive Systems II1. Gear Drive Systems II
a. Enclosed Gear Drives
i. Definitions
ii. Advantages and Disadvantages
iii. Safety
iv. Types of Drives
v. Configurations
vi. Terminology
b. Gear Drive Efficiency and Horsepower
c. Gear Drive Service Factors
d. Gearbox Installation
i. Foundation
ii. Lubrication
iii. Test Run
iv. Run In
e. Gearbox Alignment
f. Preventive Maintenance and Overhaul
Seals and Gaskets1. Types of Seals
a. Static
b. Dynamic
2. Gaskets
a. Types
i. Flat
ii. Envelope Gasket
iii. Spiral-wound Metal-filled
iv. Grooved Metal
v. Solid Flat Metal
vi. Metal Ring Joint
b. Choosing a Gasket Material
3. Stuffing Boxes
a. Three Basic Parts
b. Packing Material
c. Packing Installation
4. Automatic or Molded Packing
5. Radial Lip Seals
a. Installing Radial Lip Seals
6. Mechanical Seals
a. Installing Mechanical Seals
7. Labyrinth Seals
8. Installation Precautions