Design of spur gear using psg design data book complete. Procedure for tooth contact analysis of a face gear meshing. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. A thorough calculation of safety factors for gear 2 and gear 6 by association can be found in the appendix, and values for the other gears can be found in the results section of this report as well as in the excel sheet accompanying it. Procedure for drawing an approximation of a spur gear the following procedure can be used to create gear models using cad workstations. Find the ratio of the output speed to the input speed. The spur gear consists of the first tooth plus one tooth rotated clockwise and two teeth rotated counterclockwise for a total of four teeth. Select suitable materials for pinion and wheel from the design data book first we will select the type of material for pinion and wheel based on the input parameters. Horse power, speed of the driver, speed ratio, working life, working conditions. Spur gear design procedure free download as powerpoint presentation. Jun 28, 2010 click and drag a box around the big gear, small gear, and circle shape to select them all.
Gear design objectives understand basic principles of gearing. Scribd is the worlds largest social reading and publishing site. Spur gear design and selection objectives apply principles learned in chapter 11 to actual design and selection of spur gear systems. Recognize different gearing systems and relative advantages and disadvantages between them. Nov 11, 2017 the complete procedure of design of spur gear is explained in this video step by step in very easy manner. A typical case would involve the design of the gearing for a hoist to raise a certain weight w ata uniform speed, when making use of a motor with a given horsepower hp running at a given speed rpm and driving through a pinion with number of teeth np, fig. Inertia of the gear through acceleration and deceleration. Alternatively you can also calculate using a gear design software. The complete procedure of design of spur gear is explained in this video step by step in very easy manner. File type icon file name description size revision time user. The file used to create the spur gear and rotate and translate into mesh are given in the patran session file spur. Gear innovation has been produced and extended as the centuries progressed.
For the meaning of the terms used in the software and for additional information regarding spur gears, click on the spur gears help button. Drawing an approximate representation of an involute spur. About all the devices we consider as a machines use gear of some sort. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Between gear 2 and gear 1, it is calculated as follows. Choose in the element explorer gear spur gear external gear and drag it into the 3dview. Pdf design, modeling and analysis of helical gear according. Understand gear trains and how to calculate ratios.
Direct gear design for spur and helical involute gears. Introduction to gear design introduction albert einstein once said. At the same time, it is well known that universal standard tools. Design shapes of spur gears khk gears gear manufacturer. The gearset shall transmit 100 horsepower at a pinion speed of revolutions per minute. Design of spur gearmachine designspur geargear designdesign of machinemdgtuspur gear design duration. Also note that spur gear design we use today was first sugested by swiss mathematician leonhard euler 15. The calculations use procedures, algorithms and data from standards ansi, iso, din, bs and specialized. Design and analysis of spur gear pinaknath dewanji mechanical engineering gitam institute of technology, gitam university, rushikonda, india.
Spur gear is most basic gear used to transmit power between parallel shafts. Gear 1 is called a sun gear, gear 2 is a planet, link h is an arm, or planet carrier. Tutorial for gear design and calculation with mdesign gearbox. Spur gear design, bending and compressive stress, tooth profile, matlab introduction gears are one of the oldest of humankinds creations. This method will produce an approximation of the gear tooth form well suited for assemblies and animations. Design of spur gears spur gear can be modeled similar. Since the sun gear the largest gear is fixed, the dof of the above mechanism is one. Design, modeling and analysis of helical gear according bending strength using agma and ansys article pdf available february 2014 with 6,527 reads how we measure reads. Here is step by step guide how to make spur gear using catia. Spur gear creation american society for engineering. It is neither necessary nor efficient to take the time to draw an exact involute. Mayuram indian institute of technology madras module 2 gears lecture 1 introduction contents 1.
The smallest number of teeth on a spur pinion and gear, onetoone gear ratio, which can exist without interference is np. Rack and pinion gear design free download as powerpoint presentation. Precision requirement of gear, including gear pitch, shaft diameter, pressure angle and tooth layout. Understand geometry of different gears and their dimensional pro perties. The tooth numbers are n 2 24, n 3 18, n 5 22, and n 6 64. Relationship between the involute elements determination of base tooth thickness from a known thickness and viceversa. This book is an attempt to apply that principle to gear design by presenting information from a manufacturing pointofview rather than a theoretical one. Geometric design and strength check of spur gear with straight and helical toothing. Abstract gear is the one of the important machine element in the mechanical power transmission system. Formulas for gear calculation external gears contents. Design of spur gear full design procedure of spur gear. The result is called the base pitch p b, and it is related to the circular pitch p by the equation 78 7. The spur gears are designed in the creo parametric and the. Gear wreck will happen because of its tooth fatigue and tooth surface wear, so strength design from both side is necessary.
Procedure for tooth contact analysis of a face gear. Chapter 9 spur gear design free download as powerpoint presentation. Introduction modern gear design is generally based on standard tools. Calculate forces on teeth of spur gears, including impact forces associated with velocity and clearances. For the analysis, 15nicr1mo15 and scm415 are used as the materials of the spur gear. Determine allowable force on gear teeth, including the factors necessary due to. The number of teeth for spur gears is given by where k 1f fll1 for fulld tht th08f tbt th d ldepth teeth, 0. Gear design in mdesign gearbox march 2012 driveconcepts gmbh, dresden 3. Hoe to use psg design databook effectively is also covered in this video. Investigation of contact stress in spur gear using lewis equation and finite element method ashish v kadu1 and sanjay s deshmukh1 corresponding author. In this mesh, the reference circle of the gear touchesthe pitch line of the rack. Resources and usage design of transmission systems. The results obtained from finite element analysis fea. Spur gear design as an exercise in gear selection, a stepbystep procedure will be demonstrated on how to design a gearset pinion and gear for a gearbox that is to be mass produced for a general industrial application.
Instead of using the theoretical pitch circle as an index of tooth size, the base circle, which is a more fundamental circle, can be used. The design and calculation of a spur gear transmission, one of the oftenperformed mechanical engineering tasks, requires a lot of long and complicated tedious computations. The optimal design of a spur gear mesh is a problem of considerable interest in mechanical design. Things should be made as simple as possible, but no simpler. Style and dimensions of gear blank design of the hub of the gear degree of precision required means of attaching the gear to the shaft means of locating the gear axially on the shaft august 15, 2007 11 kalpakjian schmid manufacturing engineering and technology, prentice hall spur gear nomenclature august 15, 2007 12 gear types helical gears. Permissible working stress for gear teeth in lewis equation. Errichello 1979 and ozguven and houser 1988 survey a great deal of literature on the development of a variety of simulation models for both static and dynamic analysis of different types of gears. Good designers and engineers have experience and knowledge and the ability to communicate their thoughts and ideas clearly with others. Especially, miscalculations tend to occur in cases of helical gears or profile shifted spur gears. Gear calculation of spur and helical gears with involute gear. This paper presents the stress analysis of mating teeth of spur gear to find maximum contact stress in the gear teeth. Spur gear design software free download spur gear design.
Online gear calculation of spur and helical gears with involute gear sizes of individual wheel and gears pairing easy, fast and completely free. Spur gears design contraints limit their ability to transfer energy at high speeds and torques. If the mating gear has more teeth than the pinion, that is. In the stroke paint tab, click the button next to the x for flat color. Planetary gear trains example for the speed reducer shown, the input shaft a is in line with output shaft b. Note that this was inspired by document i have found at website. Gear design and strength iupital has good strength, durability, wear resistance, and chemical resistance, so can be used to each gear. Apr 26, 2017 between gear 2 and gear 1, it is calculated as follows. Mitcalc internal spur gears is an excel spreadsheet built for geometric design and check of spur gearing with straight and helical toothing. First of all lets create excell table contained parameters thatll define the spur gear profile. Application supports imperial and metric units, is based on ansiagma and isodin standards and support many 2d and 3d cad systems.
Spur gear terms and concepts description in order to design, build and discuss gear drive systems it is necessary to understand the terminology and concepts associated with gear systems. This makes gear design quite simple almost like selecting fasteners, economical, and available for everyone, reducing tooling expenses and inventory. Designing a gears basic shape by gear calculation software method you may calculate in your head to get the previous values as these calculations are simple. May 09, 2018 design of spur gear machine design spur gear gear design design of machinemdgtu spur gear design duration. Figure 75 shows two meshing gears contacting at point k 1 and k 2.
352 1448 139 330 750 82 1467 740 72 1477 904 1122 467 1401 910 415 742 1069 1223 1265 668 879 888 281 225 138 1544 1203 1536 940 1154 1367 1007 919 674 226 458 1073 9 1161 165 547 846 1388 561 988 1480 923