The programme of exercises enables familiarisation with six different drive implementation and analysis methods: understanding the brief and the drawing, assembly, setting, adjusting, testing, and making calculations. This laboratory system is used to introduce the basics of gearing and the correct method of assembling drive elements. A robust tubular steel frame with a square profile and bearing elements provide the accuracy for the setting of precise gearing. All the system components are kept ready to hand and well protected in a housing system. Offers three assembly kits in this product series, each focussing on different aspects. Each kit is used entirely independently of the other kits within the series. The flexibility of the set-up and the modularity of the components simplifies experimentation and implementation of the students' own ideas.
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The flexibility of the set-up and the modularity of the components simplifies experimentation and implementation of the students' own ideas.A robust tubular steel frame with a square profile and bearing elements provide the accuracy for the setting of precise gearing. All the system components are kept ready to hand and well protected in a housing system.The multi-step and shift gears in are based on those of a conventional lathe. The step gear unit is very similar to the primary drive on a pillar drill.
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Gear drives are uniform translation gears. The rotary motion is transferred from one shaft to a second through positive transmission by gears.
The gear is the element of a machine that transmits and transforms motion. A gear comprises at least one drive, an output and a frame.
The drive and the output shaft are arranged in parallel. Planetary gears are a type of spur gears, in which the drive and the output shafts are on the same axle. In spur gears, the gears are mounted on parallel axles.
Features:
Investigation of planetary gears
Investigation of single-stage and multistage spur gears
Learning Objectives And Experiments:
Determine the transmission ratio
Investigation of single-stage or multistage spur gears
Investigation of planetary gears.
The Gear Efficiency Apparatus has a gearbox which incorporates both spur and worm gears for which the setups can be easily switched between. The input and output power of the Gear Efficiency Apparatus is calculated for determining the Gear Efficiency of two different gear configurations. Sensors for speed and force are located on the motor module (input) and the brake module (output). The motor speed input can be controlled as well as a breaking force or load applied to the output shaft via a braking module.
By comparing the actual input and output readings to that of the calculated output values we can affectively work out the losses in the system and the efficiency of the respective gear configurations. By taking the input and output force (N) readings we can then calculate the torque (Nm) in the shafts as well as go on to calculate the power (Nm/s).
Experimental Capabilities:
Measurement of mechanical efficiency of gears
Familiarity of industrial gearboxes and their uses and application benefits.
Braking and friction
Gear ratios and theory
Comparison of input and output power
Efficiencies of spur and worm gear configurations
Torque measurement
Motor performance under loading.
Maximum Dia. of Spur Gear: 18 30
Minimum Dia. of Spur Gear: 1/2 1
Maximum Module: 5 Module 8 Module
Maximum Travels of Hob Slide: 10 12
Maximum Helical Gear Cutting: - LH/RH 45 LH/RH 45
Diameter of Work Table: 16 22
Work Table Bore:v 2 3
Maximum Distance b/w Hob & Work Table: 11 18
Maximum Dia. of Hob: 4 5
Mounting Taper of Hob Spindle: Mt 3 Mt 4
Hob Spindle Speed: 6 8
ELECTRICALS
Main Motor Power: 3 H.P. 3 H.P.
Rapid Motor Power: 1.5 H.P. 2 H.P.
Operated: Manually
Dimensions: 25 x 20 x 30(h) cm
Net Weight: 1 kg
Gross Weight: 2 kg
Equipment Layout: On Base.
A small-scale gear pump demonstration unit, comprising of a water reservoir, pump, control valve, relief valve and inter- connecting pipework, all mounted on a stainless steel base.
Capable of being linked to a PC (not supplied).
Transparent pump head for visibility
Supplied with software providing full instructions for setting up, operating, calibrating and performing the teaching exercises.
Facilities are provided for logging, processing and displaying data graphically. Full theoretical back-up is included together with a student questions and answers session.
Equipped with electronic measurement sensors for pump head pressure, flow-rate and water temperature.
The group is supplied with manuals which describe all parts of the Gear Pumps Study Unit the installation and utilisation procedures, aswell as many exercises with relative resultsThe gear pump mounted onto the bench is characterized by the possibility of regulating the delivered flow rate, keepingconstant the delivery pressure, changing the rotation speed of the operation electrical motor. The gear pump study unit allows the student to understand and to experiment the oil gear pumps running.
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It is used to explain that the speed of working machine is adjustable as long as the ratio of tooth number on gears of working machine and power machine are changed.
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The Gear Tooth Form Apparatus also explains the form of an involute curve and how this is used to create a gear tooth profile. To help describe what an involute curve is, paper can be placed into the apparatus and an involute curve drawn. Gear Tooth Form Apparatus a bench top base plate contains all elements for this experiment. Three gears are located onto the base plate. A third gear is removable to allow students to review its tooth form, pitch circle diameter (PCD) and other key geometry of a tooth form. A large gear and small gear mesh together and can be rotated to produce analysis of ratios.
A set of vernier calipers is provided to allow the removable gear to be measured to help give a practival analysis of the Gear Tooth Form Apparatus.
Experimental Capabilities:
Explanation of Gear Ratios
Explanation of Gear Modules
Explanation of Gear Form
Explanation of Gear Trains and Rotational Direction
Experimental determination of shape and construction of an involute curve.
A bench top frame of profiled aluminium, houses shafts which can be moved within the grooves of the profile. Understanding the basics of gear trains is important. Gear Train Demonstrator ensures this is done in a simple, visual and durable way. The profile grooves ensure the quick and easy release and securing of the shaft and hence component parts. The Gear Train Demonstrator are manufactured from durable plastic and all other components are industrial standard parts. Onto the shafts sis bearings and the gear components themselves. Rotation of the gear arrangements is done manually. The pitch circle diameters of the gears are visually shown also.
Experimental Capabilities:
Variation of operation between different transmissions
Efficiency of different transmission types
Accuracy of setting up of different gears
Gear ratios
Input and output ratios
Modulus of gears.
A solid frame made of anodised aluminium section forms the base for the unit. The bearings for the pulleys and gears are attached to the t-slots in the profile using clamping levers. This apparatus is used to demonstrate belt drives, wheel and disk drives, and gear trains. Basic terminology and relationships, e.g. the transmission ratio, direction of rotation reversal, reference circle and modulus, the function of intermediate gears, and so on can be clearly demonstrated. The size of the unit ensures that the experiment is clearly visible even for larger groups of students. These are easy to release and can be slid horizontally making a wide range of different set-ups possible. All experiments are carried out using manual power.
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The unit consists of a metal base plate with a fixed axle and a rail made of steel. Two further axles can be clamped to the rail in any position. This benchtop unit conveys the relationship between the number of gear teeth on spur gears and the transmission ratio of gear trains. In this way it is is possible to construct one and two stage gear trains with any combination of gears. Drive pins couple the gears. Four plastic gears are included with the unit. A plastic box is used to store the parts not in use. By undoing a locking pin, the rail can be swivelled around the fixed axis providing a demonstration of planet gear trains.
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Transparent Six File Gearbox And Handbrake Assembly model is designed for demonstration and operation of inner structure of truck six speed gearboxes and handbrake in high and vocational schools.
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Transparent Six File Gearbox And Handbrake Assembly model is designed for demonstration and operation of inner structure of truck six speed gearboxes and handbrake in high and vocational schools.
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Gearbox Apparatus can be slid across each other by the use of a lever with ball knob and the whole gearbox can be rotated using the rotating handle attached on the side of the input pulley. The gears are industry standard gears finished in high quality and mesh together in different ratios within the frame. A study wall mounted frame houses all the gears, shafts, bearings and levers contained within this apparatus. All gears run on shafts fitted into bearings and the changing mechanism ensures smooth transition. A 'H' style change with gear change lever and knob allows the use of the different gears within the system.
Protractors on the input and output shaft pulleys are fitted. A set of masses and hangers is supplied to allow the shafts to be driven. The input and output pulleys allow loads to be applied for lifting and lowering. This unit is hand operated. A set of clear, transparent guards are fitted so that safety is maintained and clear visibility is ensured.
Experimental Capabilities:
Measure of the angular displacement at the input and output of the gear box and comparison with the calculated values
Enables velocity and torque ratios to be determined.
Calculation of the efficiency for different ratios according to the torque at entry
This unit is mounted on a metallic structure and may be wall mounted.
This unit has been designed to study a simple lifting mechanism and its use to determine the velocity ratio, mechanical advantages and efficiency.
Features:
Used for boring to create holes in different work materials.
Economic in pricing when compared to other boring instruments.
Can drill maximum of 38mm.
Creates less noise and less vibration.
Accuracy in making hole.
Provides consistent boring.
Durable and reliable tool.
No compromise made in quality of machine components.
Requires less or low maintenance but provides excellent machining performance.
The dynamic tests run the input of the different drive units at a given speed using a motor, while measuring the input power. At the same time, a dynamometer loads the output of the drive unit while measuring the output power. A bench-mounting base unit forms the main part of this set of products. Supplied with a three-shaft gear drive unit as standard, the base unit dynamically tests the gear drive and the other optional drive units. Includes simple tools needed to fit the drive units to the base unit, and to adjust the compound gear drive. In the base units upper level, the student fits their choice of drive unit. Students use the measurements to find the performance and efficiency of the drive unit. Students may set the gear unit (supplied) as a simple or compound drive by sliding a gear in or out of mesh on the third shaft. A variable-speed, low-voltage motor provides the shaft input turning force (effort) to the drive. A dynamometer provides the output braking force (load) to the drive. Fans provide air cooling for both the motor and dynamometer. Flexible couplings with collets connect the drive unit to the motor and dynamometer for quick and accurate alignment. The dynamometer uses electromagnetic braking and a hysteresis effect to provide a variable load at a constant torque irrespective of the speed. Sensors on the motor and dynamometer measure their shaft speed, torque and therefore power in and out at the drive.
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The instrument consists of the counter, the detector and the connection lines. A special instrument that can detect the strength of Ionizing radiation (αParticle?β Particle?γRay). Its technical parameters: Working voltage: AC 220V ± 10%, 50Hz.
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