Jan 22, 2022
ELT 146 - Mechanisms Lab Credits: 2
Lecture Hours: 0
Lab Hours: 4
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
The principles of drives and linkages discussed in ELT 143 are evaluated using precision components. Major principles evaluated are speed ratios, torque, power, and efficiency. Lab projects are applications of principles of process control and robotics interfacing mechanical motion and energy requirements with programmable control concepts.
Corequisite: ELT 143
- Analyze gear train, spring, pulley, hoist and joint mechanisms.
- Calculate and measure torque and angular velocity ratios for simple, internal, reverted, planetary, helical, bevel and differential gearing arrangements.
- Calculate and measure rack and pinion, worm and wheel, block and screw arrangement parameters.
- Assemble mechanisms:
- Gear trains.
- Spring mechanisms.
- Pulley and hoist mechanisms.
- Joint mechanisms.
- Practice proper techniques for handling and assembling gears, bearing plate assemblies, shafts, collars.
- Relate gar terms: Diametrical pitch, pitch diameter and pitch.
- Use mechanical terms: Pitch circle, center distance, pinion, pitch radii, involute gear, root radius and lands.
- Use mechanical terms: Addendum, dedendum, whole depth, working depth, chordal thickness, circular thickness, pressure angle, module, Fellows stub tooth and compound gear trains.
- Analyze mechanical devices.
- Construct and take measurements on spring mechanisms, toothed belts, disk drives, rotary cams, universal joints, and crossed helical gears.
- Construct and take measurements on inertial configurations, pulley blocks, chain drives and differential or chain hoists.
- Build and perfect an approved mechanical project.
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