#HELICAL GEAR DESIGN PDF SOFTWARE#

Inc in 1970 with a vision to commercialize the concept of computer simulated engineering, establishing himself as one of the pioneers of Finite Element Analysis (FEA). THE FOLLOWING ARE THE PICS OF SEQUENCIAL DESIGN PROCEDURE IN CATIA 1 helical gear base diagram helical gear involute Д¤ 7.1 INTRODUCTION TO ANSYS: ANSYS Stands for Analysis System Product. Set up the geometric parameters Number of teeth Diametric Pitch Pressure angle Pitch diameter Face width Helix angle 4. m a =Center distance = ( z p + z g )* m n /2 cos ОІ a a = Addendum = m a f =Dedendum = 1.25*m General Procedures to Create an Involute Curve The sequence of procedures employed to generate the involute curve are illustrated as follows: - 1. p / z p p n = Normal circular pitch = p.cosОІ P n =Normal diametrical pitch = P /cosОІ p x = Axial pitch = p c /tanОІ m n =Normal module = m / cosОІ О± n = Normal pressure angle = tan -1 ( tanО±.cos ОІ ) ОІ =Helix angle d g = Pitch diameter gear = z g.

Additional helical datum 3.2 Helical Gear geometrical proportions p = Circular pitch = d g. Create the tooth solid feature with a cut and extrusion.

Define the involute tooth profile with datum curve by equation using cylindrical coordinate system. Create the basic geometry such as addendum, dedendum and pitch circles in support of the gear tooth. For shafts crossed at right angles the helix angles are of the same hand because they must add to 90 degrees. Where the sum or the difference (as described in the equations above) is not zero the shafts are crossed. The two equal but opposite angles add to zero: the angle between shafts is zero that is, the Дў shafts are parallel. Quite commonly helical gears are used with the helix angle of one having the negative of the helix angle of the other such a pair might also be referred to as having a right-handed helix and a left-handed helix of equal angles. In the latter, the shafts are non-parallel. The former refers to when the shafts are parallel to each other this is the most common orientation. Helical gears can be meshed in a parallel or crossed orientations. Since the gear is curved, this angling causes the tooth shape to be a segment of a helix. The leading edges of the teeth are not parallel to the axis of rotation, but are set at an angle. GEOMETRY OF HELICAL GEARS Helical gears offer a refinement over spur gears. Usually the pinion drives the gear and the system acts as a speed reducer and torque converter. Gears operate in pairs, the smallest of the pair being called pinion and the larger one gear. A gear is a toothed wheel having a special tooth space of profile enabling it to mesh smoothly with other gears and power transmission takes place from one shaft to other by means of successive engagement of teeth. The design and manufacture of precision cut gears, made from materials of high strength, have made it possible to produce gears which are capable of transmitting extremely large loads at extremely high circumferential speeds with very little noise, vibration and other undesirable aspects of gear drives. Ch.Nagaraju Assistant Professor In the present era of sophisticated technology, gear design has evolved to a high degree of perfection. They have gained wide range of acceptance in all kinds of applications and have been used extensively in the high-speed marine engines. These toothed wheels are used to change the speed or power between input and output. INTRODUCTION Gears are most commonly used for power transmission in all the modern devices. Both the results calculated using ANSYS and compared according to the given moment of inertia.

It is therefore observed that more contact stresses are obtained in modified gears. Study is conducted by varying the geometrical profile of the teeth and to find the change in contact stresses between gears. The analytical study is based on Hertz s equation. The model is generated by using CATIAV5 OR PRO-E,and ANSYS is used for numerical analysis. These stresses are used to find the optimum design in the gears which reduces the chances of failure. Finding stresses has become most popular in research on gears to minimize the vibrations, bending stresses and also reducing the mass percentage in gears.

#HELICAL GEAR DESIGN PDF SOFTWARE#

Due to meshing between two gears contact stresses are evolved, which are determined by using analyzing software called ANSYS. But the stresses are occurred due to the contact between two gears while power transmission process is started. One of the main reason of the failure in the gear is bending stresses and vibrations also to be taken into account. These gears play a most predominant role in many automobile and micro electro mechanical systems. 1 Design of Helical Gear and Analysis on Gear Tooth Indrale Ratnadeep Ramesh Rao M.Tech Student ABSTRACT Gears are mainly used to transmit the power in mechanical power transmission systems.

Helical gear design pdf