This is a Mechanical final year project work on Gearless Transmission which is a compact and portable equipment, which is skilful and is having something practise in the transmitting power at right angle with out any gears being manufactured. This project is the equipment useful to improve the quality of the gear being manufactured and can be made in less time. This project uses El-bow mechanism which is an ingenious link mechanism of slider and kinematic chain principle. This is also called as “gearless transmission mechanism” and is very useful for transmitting motion at right angles. You can also Subscribe to FINAL YEAR PROJECT'S by Email for more such projects and seminar.
The Gearless transmission or El-bow mechanism is a device for transmitting motions at any fixed angle between the driving and driven shaft. The synthesis of this mechanism would reveal that it comprises of a number of pins would be between 3 to 8 the more the pins the smoother the operation. These pins slide inside hollow cylinders thus formatting a sliding pair.
Our mechanism has 3 such sliding pairs. These cylinders are placed in a Hollow pipe and are fastened at 120* to each other. This whole assembly is mounted on brackets wooden table. Power is supplied by an electric motor. The working of the mechanism is understood by the diagram. An unused form of transmission of power on shaft located at an angle.
The featured product has its widest application as an extension for a socket wrench. This report includes working principle, machine design, cost estimation etc. Use this Mechanical report for your reference and study work only.
This project “EL-BOW TRANSMISSION” being compact and portable equipment, which is skilful and is having practice in transmitting power at right angle without any gears being manufactured. The El-bow Mechanism transmits the input power towards the output side such a way that the angular forces produced in the slacks are transmitted with the help of rods which takes up the input power and the right angle drive is transferred towards the output slack and rod assembly. Hence very little friction plays while the power is being transmitted.
Hunting and back lash errors are absent. Therefore, it is appreciated that efficiency as high as 90-92% are possible in gear less transmission mechanism.
Why did you choose to work on this project topic : Here is a wonderful mechanism that carries force through a 90ºbent rod. Transmitting rotational motion around an axis usually involves gears, which can quickly become complicated, inflexible and clumsy-looking, often ugly. So, instead of using gears, this technology elegantly converts rotational motion using a set of cylindrical bars, bent to 90º, in a clever, simple and smooth process that translates strong rotational force even in restricted spaces.A gearless transmission is provided for transmitting rotational velocity from an input connected to three bent links. Both the input shaft and the housing have rotational axes. The rotational axis of the input shaft is disposed at an angle of 90 degree with respect to the rotational axis of the housing. As a result, rotation of the input shaft results in a processional motion of the axis of the bent link. The rotary and reciprocating motion of bent link transmit rotation of prime mover to 90 degree without any gear system to an output shaft.