Design Methodology (spur gear) Spur gears are of 200 full depth involute system profile, which is the most preferred profile as per BIS standards [6]. The transmission ratio (i) of 1.5 is selected and spur gear module (m) of 1mm is decided from that the various gear parameters are derived as: Parameter Pinion Gear No of teeth 20 30 Pitch circle diameter (PCD) = dp= mZ 30 mm 45 mm Addendum circle diameter = da = m(Z+2) 33 mm 48 mm Dedendum circle diameter = dd = dp- (2×1.25m) 26.3 mm 42.3 mm Working depth = 2m 3 mm 3 mm Tooth thickness at P.C.D = t = 1.5708m 1.2 mm 1.2 mm Clearance = c = 0.25m 0.4 mm 0.4 mm Base circle diameter = db = 2 ((dd/2) + c) 27 mm 42 mm Circular pitch = p= (πd_P)/Z 4.7 mm 4.7 mm Pressure angle = α 200 200 Centre distance …show more content…
The recommended transmission ratios, centre distances and corresponding values for number of starts in the worm, number of teeth of the worm wheel, diametral quotient of the worm and module as per the 1S:3734-1983 standards [7] Parameters Worm &worm wheel I Worm &worm wheel II Transmission ratio = i 40/1 50/1 Axial module of worm = m 0.95 mm 1 mm Centre distance = a 25 mm 31.5 mm Number of starters is worm = Z1 1 1 Number teeth in worm wheel = Z2 39 50 Diametral quotient = q 14 …show more content…
The worm wheel is designed as per the following formulae [8] Parameters Worm &worm wheel I Worm &worm wheel II Outer diameter of worm wheel = da2 52 mm 41 mm Width of worm wheel = b2 10.4 mm 10.64 mm Length of worm = b1 16.14 mm 13.765 mm Outer diameter of worm wheel = da2 da2 = m (Z2 + 4cosγ – 2) Width of worm wheel = b2 = (0.8)d Length of worm = b1 = 2m (1+√(Z_2 )Worm wheel bore diameter is designed in the same way as gear bore diameter as mentioned previously under section 5. Parameters Worm &worm wheel I Worm &worm wheel II Bore diameter of worm wheel 15 mm 15 mm Casing and assembly The gear box is made compact within the dimension 120 mm × 120 mm × 120mm. In order to achieve this worm is machined on the same shaft which supports the gear wheel of the previous stage as shown below The entire assembly with the casing is shown below
* This type of system is also referred to as a continuously variable transmission. It is called this because as the engine speed increases the final drive ratio increases. That is, the difference between the engine speed and track speed decreases. It is equivalent to an automatic transmission on a car with an infinite number of gears that you never felt shift. Let's take a look at how this "infinite gearing" process works:
CAPPA, JOHN. "Solid Axle Revival?" Four Wheeler Magazine. NC WiseOwl, June 2012. Web. 11 Dec. 2013. .
A connecting rod subjected to an axial load F may buckle with x-axis as neutral axis in the plane of motion of the connecting rod, {or} y-axis is a neutral axis. The connecting rod is considered like both ends hinged for buckling about x axis and both ends fixed for buckling about y-axis. A connecting rod should be equally strong in buckling about either axis [8].
The Wankel rotary engine named after the designer, Felix Wankel, was engineered in the early 1930’s. The rotary engine was unlike the conventional four stroke internal combustion engines and lacked the need for pistons, valves and camshafts. With only three moving parts involved in the design, this engine showed great promise in reliability and efficiency. The first Wankel rotary model was shown in 1960, not as an engine, but as a pump drive. Instead of the very complicated system involved in a conventional reciprocating piston engine, the wankel engine incorporated triangular “rotors” (see figure 1) that rotate within an epitrochoidal chamber around an eccentric shaft. Not only is this engine much more simple (only 3 moving parts rather
Gears are considered wheels with teeth, sometimes called a cog. When the gears come together they are able to make things turn. You need to have at least two cogs to do any work with a gear. Gear come in many different sizes which help them do work. The purpose for gears is to be able to motion from one moving object to another. Gears are used for many reasons such as to increase or increase the rotational speed, to move rotational motion to a different axis, or to keep the rotation of two axis moving at the same time. There are many different types of gears used for different things examples of some would be spur gear, helical gear, worm gear, internal gear etc. Spur gears are one of the most commonly used gears since they’ve been around the longest. Spur gears have teeth that run vertical to the face of the gear. Helical gears are actually similar to the spur gear the difference between them is that the teeth are not perpendicular to the face of the gear, and tend to run smoother due to the larger amount of teeth it has. (Gears and stuff, 2006)Worm gears are u...
Two thin skewers were then cut to a length about 4 cm longer than the width of the axle rings. The skewers were cut so t...
...ed as mats or runners in non critical applications and where cost is a factor. Typically used belts are good on one side and worn on the other side and not suitable to be used as conveyor belts any longer. Common thickness is in the ½” – ¾” range and widths can vary up to 96” wide; usually 24”-48” is most common width selected.
The spur is a piece of hard ware that is attached to the heel by a strap usually made of leather. It is Y-shaped, and pointed towards the horse so that the rider can aggress his horse on. In early time the spur was always attached with a strap, however as the spur evolved, the strap was no longer of importance. The spur also grew more and more elaborate during the medieval ages, velvet straps, intricate designs and wheels that made the spur more of a showpiece than a tool. Before the period of the 13th century the spur was that of the “prick” style, where it is basically just a point that urged the horse. However during the 14th century the “rowel” type spur gained its popularity. This type of spur looked as though it had a wheel on the end of it. Spurs at its earliest times were made of bone and wood, then later of bronze, brass or iron. The rowel spur was definitely the spur of choice around medieval times because it was so elaborate. It was first introduced in 1238 by France Simon de Montfort, however did not really catch on until 1285.
Equation 3.3 is utilized for the assessment of the structural torsional stiffness of the handle for its design and analysis. This equation is inputted into the spreadsheet and plotted to look for the coefficient. The coefficient is the structural torsional stiffness, KT of the handle. All values needed for the equation are measured from the handle model in SolidWorks.
The split type sprocket, a good alternative for solid type that allows quick installation without interfering with the shaft and
Your car’s transmission has electrical components and any hydraulics that work in unison to shift gears, and can be completely automatic or manually operated by the driver. Every car has gears, and the transmission plays the role in distributing power for the gears. The gears come together like a puzzle, which help
Cooperation is strengthened in the development and so is the use and sharing of the common power train components (engines and gearboxes). These efforts have led to a decrease in working ca...
After doing a short research i have enlisted these items which is excellent in performances and will be your first choice in the purpose of lifting your vehicles or automobiles and you will be completely satisfied after using these product which i mentioned below in details for you.
...aft for six feet stretched 2006 Hummer H2. I had to design the shaft for critical speed and its torsional strength by taking into consideration for minimal vibrations in operation at different engine speeds. I’m thankful to my Manager Mr. Ayaz Patel for believing in me and giving an opportunity to demonstrate my skills.
Chua, Ian Y. H. Civil and Structural Engineering Resource Web. 29 Jan. 2000. 2 Mar.