Design and optimization of 2stage reduction gearbox 1neeraj patel 2tarun gupta 3aniket wankhede 4vilas warudkar 1 23b. In the present work all the parts of differential are designed under static condition and modelled. Differential mechanical device a cutaway view of an automotive final drive unit which contains the differential input torque is applied to the ring gear blue, which turns the entire carrier blue, providing torque to both side gears red and yellow, which in turn may drive the left and right wheels. Design and stress strain analysis of composite differential gear box nitin kapoor1, virender upneja2. Get quotes from reconditioning centres and auto scrap yards in your area.
The gearbox is part of a system to test the idling characteristics of an automotive timing drive system. To have an accurate model helps the understanding of physical. So, a fresh approach of using automatic locker called spool in place of the differential to connect the gearbox is suggested along with replacement of bevel gears with spur gears in the design. Using spider gears connected to the differential case to drive side gears connected to output shafts, this design allows for a speed differential between the two wheels while still applying power to both. The intent of this project was to design a gearbox containing two shafts, one coupling, four bearings and two helical gears. Prabhune2 1research scholar me student, department of mechanical engineering, maharashtra institute of technology, pune, maharashtra, india 2professor, department of mechanical engineering maharashtra institute of technology pune maharashtra, india. A gear is a mechanical device often used in transmission systems that allows rotational force to be transferred to another gear or device. Twostage gearbox with parallel axles and differential unit, specially designed and manufactured by comex for internal combustion engine or electric powered light vehicles, minivehicles and small work vehicles. Apr 26, 20 design and assembly analysis of a geartrain of a gear box1. How bearing design improves gearbox performance armel doyer. Contents introduction synopsis functional description types of differential gears working cases merits demerits 3. It is observed that glass filled polyamide composite material is selected as best material for differential gearbox and is found to suitable for. Gearboxes are used in almost every industry right from power to marine, and also include agriculture, textile, automobiles, aerospace, shipping etc. Throughout the mechanical industry, many types of gears exist with each type of.
Stress and design analysis of triple reduction gearbox casing. The transmission and differential provides a range of gearing, to multiply the engines torque to overcome the cars inertia and get it moving, as well as providing it with a reasonable speed capability. Thats because although wheels on the left and right of a car rotate at the same speed on a straight road, they do not in a corner. A differential is a device, usually but not necessarily.
Introduction a differential is a device, usually but not necessarily employing gears, capable of transmitting torque and rotation through three shafts, almost always used in one of two ways. Differential gearbox seminar reportpdf ppt download abstract. The gearbox is being powered by a 5 hp, 60hz ac, electric motor with a speed of 1725 revmin. The clutch type differential resembles an open differential in design and operation. The closing pages also describe the layout of the gearbox internal running gear and the gearbox casing. Gearbox performance, reliability, total cost of ownership energy cost, overall impact on the environment, and anticipation of additional future regulations are topofmind issues in the industry. Introduction the differential gear mechanism is located between the axle shafts of a vehicle and permits the same speed of wheel rotation when in straight moving, also allows different rotational speeds when in curved path.
Whichever type of vehicle arrangement is used, the output shaft carries the mating gears of the internal ratios. The speed at the input shaft is maximum which is minimise at output shaft to increase torque value. Load type static, slight impacts, service life 20,000 hours. In the present paper work crown wheel gear of differential gear box are designed under structural condition and modeled. Gear calculator solving for crawl ratio given rear axle differential, transfer case, and transmission ratios gear design equations formulas calculator crawl gear ratio rear axle differential transfer case transmission. In machine tool applications, the variety of speeds are very important because of the cutting conditions. The differential was a milestone development in the motor car. Calculation of a two stage gearbox this tutorial shows the usage of mesys shaft calculation with systems of parallel shafts. Thats because although wheels on the left and right of a car rotate at the same speed on a straight. The gearbox is being powered by a 5 hp, 60hz ac, electric motor with a. Design and optimization of 2stage reduction gearbox.
The products have a dual differential and gearbox function and come with multiple gear ratios. Design and analysis of differential gearbox free download as pdf file. Most manufacturers would introduce an additional single speed gearbox however this would over complicate the design and increase servicing costs. Gearbox and differential specialists for manual gearbox and automatic transmission and diff repairs, parts and sales in welkom, free state. A gear position sensor is supplied for interfacing with an electronic dash display. Design and analysis of gear box test bench to test shift performance and leakage s. The main aim of this paper is to focus on the mechanical design and analysis on assembly of gears in gear box when they transmit power at different speeds i. Gear wreck will happen because of its tooth fatigue and tooth surface wear, so strength design from both side is necessary. Inline helical reduction gearbox power rating guide by motor frame size. On rear wheel drive vehicles the diff may connect to halfshafts inside an axle casing or drive shafts that connect to the rear driving wheels. Automobile differential gearbox is an assembly of gears to meet the torque variation for dividing the speed of the wheel on turning conditions. Front wheel drive vehicles tend to have the engine crankshaft and the gearbox shafts transverse, and with the pinion on the end of the mainshaft of the gearbox and the differential enclosed in the same housing as the gearbox. The main aim of the project is to focus on the design and structural.
The main objective of this paper is to developed parametric model of differential gearbox by using catiav5 under various. Pdf bevel gears are widely used because of their suitability towards transferring power between nonparallel shafts at almost any angle or. Analysis of differential gear box is given in report. The driveline model is then validated using existing measurement data. Sep 28, 20 this feature is not available right now. Gearbox and differential the transmission and differential provides a range of gearing, to multiply the engines torque to overcome the cars inertia and get it moving, as well as providing it with a reasonable speed capability. In this chapter we will present a complete design of a onespeed gearbox driven by a belt transmission and driving a chain transmission. Differential gear, in automotive mechanics, gear arrangement that permits power from the engine to be transmitted to a pair of driving wheels, dividing the force equally between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven road. Keywords gearbox, differential, structural analysis, ansys i. Pdf on apr 22, 2007, nilton raposo and others published design of the differential unit for the 20062007 pace vehicle find, read and cite. Here we present a simplified explanation of how and why an automobile differential works. In differential gear assembly, crown wheel and pinion are the critical components. The final pages cover the various types of differential that can be used, the choice of bearings and oil seals and finally the type of lubrication system required to suit the application.
An epicyclic differential can use epicyclic gearing to split and apportion torque asymmetrically between the front and rear axles. There are two main types of limited slip differential, the clutchtype and the geartype. Design a crown wheel gear of differential gear box used in heavy. Design and assembly analysis of a gear train of a gear box report. To be able to test and observe the behaviour of the differential, a complete driveline is modeled, extending from the engine to the wheels. The main objective of this paper is to perform mechanical design of crown wheel and pinion in differential gear box of mfwd fwa axle of tafe mf 455. Without it, vehicles would be fine on straight roads, but theyd struggle as soon as they came to a corner. This is the reason for a device known as a limited slip differential or traction control. I had developed this work as my semester project with a view to get familiar with the technologies as well as application of theories into practical work done by industries.
Differential gearbox is an important part of the automobile i. Buy products related to differential gearbox products and see what customers say about differential gearbox products on free delivery possible on eligible purchases. Design and analysis of differential gearbox engineers. The analysis results shows that the composite gears offer improved properties over the conventional metallic gear and these can be used as better alternative for replacing. Jul 16, 2016 design and working of differential gear 1. The gearbox basic weight is 34kg 75 lbs and approximately 38kg 84 lbs. Since differential itself is used as a gear reduction unit and we are eliminating the differential so we. Bevel gearboxes are special speed reducers with their shafts lying perpendicular to each other and therefore used mainly in rightangle applications. R reddy college of engineering, eluru design and working of differential gear k. Design of gearbox free download as powerpoint presentation. The differential gearbox d drives the triple reduction gearboxes t on both sides, which in turn drive the main pinion p. Functional differential gear system by thingofun thingiverse. A slim design of spur gear differential for passenger cars, which it claims is 30% lighter than its predecessors, compared with the original bevel spur gear differential, it saves up to 30 per cent in weight and creates up to 70 per cent free axial space because of its slim design. Design, modelling and analysis of a 3 stage epicyclic planetary reduction gear unit of a flight vehicle k akhila1 and m amarnath reddy2 corresponding author.
The gear train in an automobile differential is a common application of gears, but often misunderstood by the lay public. Design and working of differential gear slideshare. The gearbox is a kind of right angle gear and is suitable for a right angle solution with a low ratio. Design of machine tool gearboxes driven by double speed electric motors dr m. Math geometry physics force fluid mechanics finance loan calculator. Gear design equations formulas calculator crawl gear ratio.
Research article design and structural analysis of. Introduction gears are the most common means used for power transmission they can be applied between two shafts which are parallel collinear perpendicular and intersecting perpendicular and nonintersecting inclined at any arbitrary angle august 15, 2007 4 introduction gears are made to high precision. Optimization of the bearing set can significantly improve gearbox performance. Transmitted power output 10 kw, electric motor speed 1450 min, required output speed 30 min. Design and analysis of differential gearbox engineers gallery. Design and stress strain analysis of composite differential gear box nitin kapoor1, virender upneja2, ram bhool3 and puneet katyal 4 1assistant professor, dept. Differential mechanical device 3 or gears, which are a cluster of four opposed bevel gears in perpendicular plane, so each bevel gear meshes with two neighbours, and rotates counter to the third, that it faces and does not mesh with. An epicyclic differential is at the heart of the toyota prius automotive drive train, where it interconnects the engine, motorgenerators, and the drive wheels which have a second differential for splitting torque as usual. Front wheel drive vehicles tend to have the pinion on the end of the mainshaft of the gearbox and the differential is enclosed in the same housing as the gearbox. Design of machine tool gearboxes driven by double speed. Gearbox design, assembly analysis, model analysis, weight reduction. Gear calculator solving for crawl ratio given rear axle differential.
Please start with the tutorial for shaft calculation to see how to introduce geometry and supports for single shafts. In british english the term transmission refers to the whole drive train, including gearbox, clutch, prop shaft for rearwheel drive, differential and. The analysis results shows that the composite gears offer improved properties over the conventional metallic gear and these can be used as better alternative for replacing metallic gears for the differential gearbox apllication. Design and assembly analysis of a gear train of a gear box. On rear wheel drive vehicles, the differential may connect to halfshafts inside an axle housing, or drive shafts that connect to the rear driving wheels. Design a crown wheel gear of differential gear box used in.
The differential contains spider gears mounted on ramps and sets of clutch disks mounted to the side gears. Gear design and strength iupital has good strength, durability, wear resistance, and chemical resistance, so can be used to each gear. Reduction gearbox design pdf various commercial gearbox designs are depicted in fig. But, when it comes to weight for light utility vehicles aluminium alloy is preferred. Please start with the tutorial for shaft calculation to see how to introduce geometry.
Design and analysis of differential gearbox automatic. Alternatively a standalone gear indicator display is available for cars not fitted with an electronic dash. Design a crown wheel gear of differential gear box used in heavy vehicles for structural loads t. In this research the differential gears analyzed for vibration effect on whole system to optimize the life of the gears under different frequency in the platform of ansys14. High value of torque is transmitted to drive shaft. Abstract my project design and analysis of differential gearbox mainly focuses on the mechanical design and analysis of gearbox as transmit the power. Sekhar, design and analysis of differential gear box used in heavy vehicles, ishitv, 2021 nov, 2015. Gear design equations calculator automobile car truck formulas. Design and analysis of gear box test bench to test shift.
322 215 1200 1136 706 568 430 1473 1074 360 1427 84 1488 1473 1183 548 1575 873 1052 1320 812 1055 231 463 974 67 337 178 514 402 364 1118 508 393 816 375