International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 09 | Sep 2024
p-ISSN: 2395-0072
www.irjet.net
Design of Two Stage Reduction Gearbox Nandita Gyanchandani1, Abhishek Govekar2, Parikshit Gokhale3, Prof. Dr. Shrinivas Chippa4 1,2,3B.tech ,Mechanical Engineering, Vishwakarma Institute of Technology, Pune, Maharashtra, India
4Prof. (Dr)Shrinivas Chippa, Dept. of Mechanical Engineering, Vishwakarma Institute of Technology, Pune,
Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------their teeth. Gears enable adjustments in speed, torque, and direction of the power source. The teeth on interacting gears are identical in shape, and when multiple gears are arranged in a sequence, they form a gear train or transmission. By manipulating the gear ratio, gears typically provide a mechanical advantage through torque variation.
Abstract - Gears and gear drives have been fundamental
components in various systems and machines for centuries. However, mastering gear design remains a complex skill. Continuous advancements in gear design have been driven by the ongoing demand for more cost-effective, quieter, lighter, and efficient machinery. An industrial gearbox facilitates the transfer of mechanical energy between devices, optimizing torque while reducing speed. By adjusting speed and torque, gearboxes convert energy into usable forms, contributing to smoother industrial operations. In this paper, a two-stage reduction gearbox with a total speed reduction ratio of 2.57 is presented.
The gear ratio (i) represents the relationship between the number of teeth on a gear and its pinion. It is given by the equation:
Key Words: Gearbox, Speed Reduction, Two-stage, Industrial machinery, Power Transmission
Where: np = speed of pinion (rpm) ng = speed of gear (rpm) Zp = number of teeth on pinion Zg = number of teeth on gear
1. INTRODUCTION A reduction gearbox allows the input speed to be lowered, resulting in a slower output speed while maintaining or enhancing the output torque. The reduction gear system comprises a set of rotating gears connected to an output shaft. High-speed input from the wheelwork is transmitted to these gears, where the speed and torque are modified. The number of gears required in the system depends on the specific output speed required for the application. This assembly is typically referred to as a reduction gearbox and can involve one or two stages, depending on the desired output speed. Two-stage reduction gearboxes are commonly applied in situations involving high-speed operations. In this configuration, the pinion is attached to the input shaft via a key, and it is then connected to an intermediate gear, known as the first reduction gear. This gear is coupled to a second low-speed pinion using an additional shaft, which is then linked to the second reduction gear mounted on the output shaft.
Fig -1: Terms used in Gears Source: Mechtics Gears are typically categorized into four major types: spur, helical, bevel, and worm gears. This project uses spur gears for a speed reduction ratio of 2.57 in an industrial gearbox.
The primary components of this gearbox include the gears, shafts, bearings, casing, oil, and oil seals.
1.1 Gears Gears are rotating, toothed components used to transmit power and motion between shafts by the engagement of
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