THEORY OF MACHINES

Click on images to enlarge

Basic Applied Mechanics

An innovative system with all the experimental hardware is mounted on Magnetic supports; a magnetic whiteboard is also supplied. The unit was designed for a qualitative investigation although quantitative experiments will provide credible results: Weight - Hooks Law & the spring constant - The equilibrant & the resultant force  - Measuring the resultant - Components of a force Parallelogram of forces - Triangle of Forces - Bow’s notation - Polygon of forces  Moments - Second Class lever - Third class lever - Torque and the lever action - The inclined plane - Rolling mass on an inclined plane and the  concept of work - Conservation of energy - The Coefficient of friction - Friction & Surface area - The pendulum - Gears - Cam & Crank -  Deflection of beams  -  Torsion - Tensile testing - Pulleys - Bending moments -  Shear Force

 

STATIC AND DYNAMIC BALANCING MACHINE

A 0.75 kW machine with speed controller for two plane balancing. The machine is equipped with standard rotors, balancing weights, vibration pickups, signal amplifier and converter and software for data analysis on computer

 

 

 

 

 

STATIC AND DYNAMIC BALANCING APPARATUS

Four balance masses. Static balancing by applying known weight steel balls. Dynamic balancing when shaft assembly is driven by a motor. Optional: Inverter for speed control. 

 

 

 

 

 

 

Cam and follower

Practical demonstration of the relative motion between a rotating eccentric member (Cam) in degrees and a sliding member (Follower) translation in millimeters such as is found in internal combustion engines

W x L x H Cm        16 x 30 x 20

Weight                     Approx 4kg

 

 

 

CENTRIFUGAL FORCE APPARATUS

Variable rotating masses with adjustable radius. Speed and force indicators.

 

 

 

 

 

 

 

 

 

EPICYCLIC GEARS

 

Epicyclic Gear Train

Practical demonstration of the relative angular motion in degrees between two shafts with a common axis using sun and planetary gears to produce forward speed

W x L x H Cm        22 x 30 x 20

Weight                     Approx 6kg

 

 

 

 

Double Epicyclic Gear Train

Practical demonstration of the relative angular motion in degrees between three shafts with a common axis, using two epicyclic gear trains to produce two forward speeds or a forward and reverse

W x L x H Cm        45 x 42 x 25

Weight                     Approx iikg

 

 

 

 

Triple Epicylic Gear Train

Practical demonstration of the relative angular motion in degrees between four shafts with common axis using three epicyclic trains to produce two forwards and a reverse speed

W x L x H Cm        24 x 42 x 25

Weight                     Approx 4kg

 

 

 

SLIDING FRICTION APPARATUS

 Bench mounted apparatus for determination of sliding friction coefficient using oscillating bar on two counter turning variable speed pulleys

 

 

 

 

 

GEARS

 

COMPREHENSIVE GEARED SYSTEM

For determination of system inertia and efficiency. Three shafts with fixed and sliding gears, geared motor dynamometer, inverter, mechanical brake dynamometer, sensors and indicators, weight hanger, weights and masses

 

 

 

 

 

 

SIMPLE GEARED SYSTEM

 For determination of system inertia. A system of 12 gears and 4 shafts. Complete with load hanger, weights, measuring tape, stop watch and chord.

 

 

 

 

 

 

 

 

AUTOMOTIVE GEAR SYSTEM EFFICIENCY, Manual Transmission

 Bench top unit of five speed automotive manual gear box with input motor dynamometer, inverter, output water brake dynamometer and measuring instruments for a study of gear efficiency at different loads, speeds and gear ratios. 

 

 

 

 

 

 

Geneva Stop

Practical demonstration of the relative angular motion in degrees between two parallel shafts

W x L x H Cm        16 x 30 x 20

Weight                     Approx 4kg

 

 

 

 

GYROSCOPE, Single Motor

A rotor with adjustable mass and radius and a portable tachometer

 

 

 

 

 

 

 

 

 

GYROSCOPE, Two motors

Rotor motor and procession motor with speed controllers for a study of gyroscope torque vs. procession speeds

 

 

 

 

 

 

MECHANISM, Horizontal Motion

Slider Crank, Four Bar Linkage, Slotted Link, Whitworth Quick Return, Scotch Yoke, Oldham Coupling, Geneva Stop, H Cam And Follower 

 

 

 

 

 

 

Torsional Oscillation

This mechanism demonstrates the torsional oscillations of a single or multi-rotor and/or geared system with low natural frequencies

W x L x H Cm        35 x 82 x 30

Weight                     Approx 32kg

 

 

 

MECHANISM, Vertical Motion

Slider Crank, Four Bar Linkage, Slotted Link, Whitworth Quick, Return, Scotch Yoke, Oldham Coupling, Hooke’s Universal Joint, Constant Velocity Joint, Geneva Stop, Cam and Follower, Epicycle Gear Train, Double Epicyclic Gear Train, Triple Epicyclic Gear Train

 

 

 

 

UNIVERSAL VIBRATION APPARATUS

The apparatus allows a wide range of vibration studies, namely: pendulums, mass-spring, free and forced vibration, lateral vibration, torsional vibration, with and without damping. Optional sensors with signal converter and software for data analysis by computer. The set consist of the Basic Units where various accessories and measuring devices are installed for various experiments in vibration

 

 
 
 
 
 
 
PERT Industrials Theory of Machines Applied Mechanics Apparatus
 
 
PERT Industrials Theory of Machines Static Dynamic Balancing Machine
PERT Industrials Theory of Machines Cam Follower
PERT Industrials Theory of Machines Centrifugal Force
PERT Industrials Theory of Machines Epicyclic Gears
 
PERT Industrials Theory of Machines Double Epicyclic Gear Train
PERT Industrials Theory of Machines Triple Epicyclic Gear Train
PERT Industrials Theory of Machines Sliding Friction Apparatus
PERT Industrials Theory of Machines Comprehensive Geared System
PERT Industrials Theory of Machines Simple Geared System
PERT Industrials Theory of Machines Automotive Gear System
PERT Industrials Theory of Machines Geneva Stop
PERT Industrials Theory of Machines Gyroscope Single Motor
PERT Industrials Theory of Machines Horizontal Motion
 
 
 
PERT Industrials Theory of Machines Torsional Oscillation
PERT Industrials Theory of Machines Vertical Motion
 
PERT Industrials Theory of Machines Universal Vibration Apparatus
PERT Industrials Theory of Machines Static Dynamic Balancing Machine
PERT Industrials Theory of Machines Gyroscope Two Motors