Theory of Machines

COMPOUND PENDULUM (TOM-004)

The length L of the ideal simple pendulum above, used for calculating the period, is the distance from the pivot point to the center of mass of the bob. A pendulum consisting of any swinging rigid body, which is free to rotate about a fixed horizontal axis, is called a compound pendulum or physical pendulum. For these pendulums the appropriate equivalent length is the distance from the pivot point to a point in the pendulum called the center of oscillation. This is located under the center of mass, at a distance called the radius of gyration that depends on the mass distribution along the pendulum. However, for any pendulum in which most of the mass is concentrated in the bob, the center of oscillation is close to the center of mass.

BRAKE & PLATE CLUTCH FRICTION APPARATUS (TOM-023)

S P Tech Equipment’s Brake & Plate Clutch Friction Apparatus is specially designed in such a fashion that allows students to demonstrate and experimentally confirm basic engineering principles in frictional motion absorption apparatus. The unit consists of two shaft motor along with clutch & a Brake attached to the respective shaft. The clutch is connected with the shaft to the pulley where spring balance is connected. Speed of motor is controlled by knob. The power which is generated by motor is transmitted through the clutch, whereas loss due to such as friction, not proper alignment the power transmitted by it is less than the power developed by motor. In this test rig we study the actual power which is transmitted through the clutch. For studying the brake apparatus a hanger is been attached to brake paddle. The brake is applied using the weights which are applied on the hanger mounted on the brake paddle

UNIVERSAL GOVERNOR (TOM-01)

The unit is designed & developed under the guidance of expert professors in this field to understand the various governors & its operating principles. The set up consists of a small electric motor connected bevel reduction gearbox or belt and pulley system through flexible coupling. The governor spindle is driven by a solid coupling connected to the gearbox output shaft and is supported on a ball bearing. The optional governor mechanism can be mounted on a spindle. Speed control unit provided to regulate the speed and extension to the spindle shaft can be used to use hand tachometer.

MOTORIZED GYROSCOPE (TOM002)

Now a day Gyroscope is very important tool used for various controls in high technology vehicles. For minimizing rolling, yawing & pitching of ship or aircraft Gyroscope is used. Balloons use Gyroscope for controlling its direction relative to stars when a telescope is mounted in the balloon. Geocentric space ships use Gyroscope for controlling & keeping fixed angular position of spacecraft in relation to earth. On the other hand space platforms use Gyroscope to universe space frame irrespective of rotation of earth. Thus the study of Gyroscope is of high importance for modern engineering student.

WHIRLING OF SHAFT APPARATUS (TOM-04)

S P Tech Equipments Whirling of Shaft Apparatus is a bench-mounted system is designed in such a way that it can be easily used for demonstrating experiments to study the whirling principle. The system demonstrates various modes of whirl with fixed and free ends without restraint. Shafts of different diameters are used for performing the experiments and are driven by electric motor. These shafts are subjected to permanent deformation during whirling. The speed of rotation of shaft can be measured by using stroboscope (optional).

STATIC AND DYNAMIC BALANCING APPARATUS (TOM0006)

S P Tech Equipments Static & Dynamic Balancing Apparatus is self-sufficient unit has being specially designed to study of experimentally balance a rotating mass system and to verify the analytical relations. The apparatus consists of a steel shaft fixed in a rectangular frame. A set of four blocks with a clamping, arrangement is provided. For static balancing, each block is individually clamped on shaft & its relative weight is found out using cord & container system in terms of number of steel balls. For dynamic balancing, a moment polygon is drawn using relative weights and angular and axial positions of blocks are determined. The blocks are clamped on shaft is rotated by a motor to check dynamic balance of the system.

UNIVERSAL VIBRATION SYSTEM (TOM-0009)

S P Tech Equipments Universal Vibration System is specially designed in such a fashion that allows students to demonstrate and perform a wide range of vibration experiments, from the basics of vibration theory to advanced studies. The Basic Frame holds various experiment modules. Each module is available separately, or as a complete set including the frame (please see separate datasheets). This apparatus enables a comprehensive range of vibration experiments to be conducted on single basic frame. The Experiments are specially designed for quick an easy assembly onto the frame, using a minimum number of common engineering tools.

EPICYCLIC GEAR TRAINER HOLDING TORQUE APPARATUS (TOM-21)

The unit consists of variable speed motor along with Epicyclic gear train. The Epicyclic gear train is connected with the shaft to the loading pulley where spring balance is connected. The power which is generated by motor is transmitted through the Epicyclic gear train, to the pulley. In this test rig we study the holding torque of the Epicyclic gear train & compare the input torque along with the holding & output torque. Also the Epicyclic Gear train ratio is been verified. S P Tech Equipments is leading educational equipments manufacturer in Pune.

SHOCK ABSORBER TRAINER (TOM-022)

S P Tech Equipments Shock Absorber Trainer is designed to study the function & analysis of shock absorber The apparatus consists of a central block carrying two spring steel cantilevers onto which steel masses are damped. These steel masses are attachable to motor unit so that all vibration is transferred to the absorber and the beam and motor remain stationary. Lateral vibration is obtained on a rectangular steel bar pivoted at both ends onto which precision variable speed motor is attached at any position. Attached to the motor are unbalanced discs to provide the vibration.

NOISE MEASUREMENT APPARATUS (TOM 052)

It is widely used to test the sound level of environment, mechanic, vehicle , ship &
other noise. Fit for industry environments protecting, working, sanitation, teaching
search & other departments.

SYSTEM APPLICATION
􀂙 Factory noise monitoring
􀂙 Entertainment noise (pubs, clubs, nightclubs, discos)
􀂙 Hospital noise and neonatal noise control

VIBRATION MEASUREMENT APPARATUS (TOM 051)

The instruments is used for measuring periodic motion, to check the imbalance and
deflecting of moving machinery. Is specifically designed for present measuring various
mechanical vibration. So as to provide the data for the quality control, run time and
equipment up keep use the high-performance acceleration meter, realize the
repetitiveness and accurate measurement. It has the function of testing axle bearing
situation. To choose a Vibration Meter one has to keep in mind the following : Velocity ,
Acceleration , Displacement , Frequency , RPM.

FOUR BAR CHAIN MECHANISM

A four-bar linkage, also called a four-bar, is the simplest movable closed chain linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar linkage. If the linkage has four hinged joints with axes angled to intersect in a single point, then the links move on concentric spheres and the assembly is called a spherical four-bar linkage. Bennett’s linkage is a spatial four-bar linkage with hinged joints that have their axes angled in a particular way that makes the system movable.

SINGLE SLIDER CRANK MECHANISM

The slider-crank mechanism is one of the most useful mechanisms in modern technology since it appears in most of the internal combustion engines including automobiles, trucks and small engines. The slider-crank kinematic chain consists of four bodies linked with three cylindrical joints and one sliding or prismatic joint. It is used to change circular into reciprocating motion, or reciprocating into circular motion. The arm may be a bent portion of the shaft, or a separate arm attached to it. Attached to the end of the crank by a pivot is a rod, usually called a connecting rod. The end of the rod attached to the crank moves in a circular motion, while the other end is usually constrained to move in a linear sliding motion, in and out.

DOUBLE SLIDER CRANK MECHANISM

Double slider-crank mechanisms, there are four links connected by two revolute joints and two sliding or prismatic joints. In the double-slider model, a plate is attached to one of the moving links. As the motion proceeds, a piece of chalk fixed to an arm will trace out an exact ellipse. Reuleaux designed adjustments to this model to change the parameters of the ellipse. The trainer is used to convert the linear motion of the piston to rotational motion of the crankshaft.

BIFILAR SUSPENSION METHOD

The Bifilar Suspension is a technique that could be applied to objects of different shapes, but capable to be suspended by two parallel equal-length cables, in order to evaluate its mass moment of inertia I about any point within the body. In this experiment, the technique will be applied to find the mass moment of inertia of a regular cross-section steel beam about its centre of gravity. The System is used to determine the moment of inertia of a material bar by the bifilar suspension method.

TRIFILAR SUSPENSION METHOD

This equipment is part of a range designed to both demonstrate and experimentally confirm basic engineering principles. The apparatus permits oscillations on pendulums with bifilar or trifilar suspension to be investigated. A cast iron wall bracket supports wire cables for a bifilar or trifilar suspension system. No drill chucks or cumbersome fixing devices are used, so that calculations are straight forward. The moment of inertia and radius of gyration of a heavy body can be found by timing its oscillation. A bar, a cylinder, or a hollow cylinder made of galvanized steel can be hung from a wall mounted carrier plate made of aluminium and placed in oscillation.

BALANCING OF RECIPROCATING MASS APPARATUS

Study of operation of balancing of reciprocating mass apparatus and determine the out of
balance forces for any given configuration is focus of this trainer. S P Tech Equipments have designed this system in such fashion that the system can be easily operated; demonstrated & requisite experimentation can be performed. System consist of 4-cylinder, in-line engine, which is mounted on a spring member so that unbalance of primary or secondary forces and couples can be separately observed by vibration of this cantilevered system.