Deflections of Shafts in Gear-Boxes
CHAPTER-1 INTRODUCTION 1.1GEARBOXES: Usually, found near motors of some sort, gearboxes are used to reduce the load on the motor by using the motor 's own momentum to keep it turning. Once a motor has reached a number of revolutions per minute, it is advisable for the operator to increase the gear, to drop the revolutions on the motor, yet still keep the same amount of power created. This reduces wear on the engine, allows more control, and allows greater speeds. Although, in practise, the main use of a Gearbox is to act as a reduction gear. These can be variable or non-variable, depending on the application. In other words, if when the motor is turning 2500 rpm the output shaft is turning 500, the gearbox is reducing the number of revolutions from input to output. This is usually achieved by use of cog wheels. If the input shaft is connected to a small cog, the output shaft is connected to a large, and two are meshed together in the gear box, then it will take several turns of the input shaft to make the output turn once. This not only decreases wear on the motor, but also allows greater acceleration. Larger the reduction ratio, larger is the acceleration.
This lens will look at a few things associated with gearboxes, such as design, manufacture, how they work and similar pieces.
1.2 FUNCTIONS OF GEAR BOX: A gear box is containing many gears of different number of teeth, arranged in different shafts which may be solid or spindle shaft. In solid shaft the gear are fitted in such a way that they can rotate only and cannot move in axial direction and also some gap is provided between two gears, where as in splined shaft two or three gear, which are already meshed together to act as a single unit are fitted in such way that they can rotate only and cannot move in the axial direction and also some gap is provided in between two gears, whereas in splined shafts two or three gears
This lens will look at a few things associated with gearboxes, such as design, manufacture, how they work and similar pieces.
1.2 FUNCTIONS OF GEAR BOX: A gear box is containing many gears of different number of teeth, arranged in different shafts which may be solid or spindle shaft. In solid shaft the gear are fitted in such a way that they can rotate only and cannot move in axial direction and also some gap is provided between two gears, where as in splined shaft two or three gear, which are already meshed together to act as a single unit are fitted in such way that they can rotate only and cannot move in the axial direction and also some gap is provided in between two gears, whereas in splined shafts two or three gears
References: Sl.No | TITLE | AUTHOR | 1 | DESIGN OF TRANSMISSION ELEMENTS | DR.T.J.PRABHU | 2 | HANDBOOK OF GEAR DESIGN | GITIN. M.MAITRA | 3 | DATA BOOK | PSG | 4 | DESIGN OF MACHINE ELEMENTS | V.B.BHANDARI | 5 | PERMISSIBLE STRESS | WIKIPEDIA |