Note that this was inspired by document i have found at website. Pdf the design and calculation of a spur gear transmission, one of the. The computer program simplifying standard procedure of tedious. About all the devices we consider as a machines use gear of some sort. The programs used in the experiment included inventor, kisssoft and mitcalc. The smallest number of teeth on a spur pinion and gear, onetoone gear ratio, which can exist without interference is np. The complete procedure of design of spur gear is explained in this video step by step in very easy manner. Here is step by step guide how to make spur gear using catia. Spur gear design and selection standard proportions forces on. Spur rack this is a linear shaped gear which can mesh with a spur gear with any number of teeth. Assume number of teeth on pinion zp, considering minimum teeth required to avoid interference. They have straight teeth extruded in one direction which makes them the easiest to design. Gear design in mdesign gearbox march 2012 driveconcepts gmbh, dresden 3. Different contact ratios may also be considered for different applications.
Modeling a rack spur gear jcs6420 page 1 the spur gear given required gear specs. Pdf procedure for optimum design of a twostage spur gear. Spur gears have high power transmission efficiency. Use power equation to get the torque and the forces. Ppt chapter 9 spur gear design powerpoint presentation. This book is an attempt to apply that principle to gear design by presenting information from a manufacturing pointofview rather than a theoretical one. P, affiliated to jntu ananthapur 2 assistant professor, department of mech, svr engineering college,nandhyala, a. Parametric design of a spiral gear process major qualifying report. Especially, miscalculations tend to occur in cases of helical gears or profile shifted spur gears. The article basic spur gear design appeared in the novemberdecember 1988 issue of gear technology summary primitive gears were known and used well over 2,000 years ago, and gears have taken their place as one of the basic machine mechanisms. Due to this reason stress in the tooth ought to dependably be precisely studied in all functional gears application.
Use lewis form factor method to get the acceptable bending load. It is proposed to focus on reduction of weight and producing high accuracy gears. Hoe to use psg design databook effectively is also covered in this video. The spur gear t ransmits power and motion between parallel shafts and it is widely used in all common transmission applications. The existing design methods for face gear tooth stresses are simple modifications of spur gear stress analysis programs. Spur gear design, bending and compressive stress, tooth profile, matlab introduction gears are one of the oldest of humankinds creations. Tutorial for gear design and calculation with mdesign gearbox. Software gto provides the required results in a very short time. Design of spur gearmachine designspur geargear designdesign of machinemdgtuspur gear design duration. Solidworks was our vehicle for modeling the 3d geometry.
Gear design procedure in practical design khk gears. Gear calculation of spur and helical gears with involute gear. One disadvantage of helical gears is that they produce an. Design calculation of spur gear module springerlink. May 09, 2018 design of spur gear machine design spur gear gear design design of machinemdgtu spur gear design duration. Sir apna camera fixed kar lo itna varies ho raha h ki eyes kaam nhi kar raha h or video quality achha nhi aa raha h buller ho ja rha h.
Direct gear design for spur and helical involute gears. The established procedure was implemented through the developed software so that a substantial saving in term of time and cost of production of the design is obtained. Executing the drawings of the parts related to the gears. If the mating gear has more teeth than the pinion, that is. Gear design and strength iupital has good strength, durability, wear resistance, and chemical resistance, so can be used to each gear. The simplest and the easiest type of gear is the spur gear. The spur rack is a portion of a spur gear with an infinite radius. The optimization is based on a multicriterion technique consisting of a minmax method combined with a direct search. Gear wreck will happen because of its tooth fatigue and tooth surface wear, so strength design from both side is necessary. The outcome of this research would enhance the designers productivity by reducing the time. Design of spur gear full design procedure of spur gear. The volume of the gear train with spur gears is reduced by 22. Choose in the element explorer gear spur gear external gear and drag it into the 3dview.
Things should be made as simple as possible, but no simpler. All the design considerations associated with a several generally spur gear designs are limited to pitch line. The gearset shall transmit 100 horsepower at a pinion speed of revolutions per minute. Software to automate preliminary design of gearbox with spur helical and bevel gears was developed. Design procedure for spur gear by using data book youtube. Alternatively you can also calculate using a gear design software. 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. Abstract gear is the one of the important machine element in the mechanical power transmission system. 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. In this paper, an optimum design of a twostage spur gear system is performed. This makes gear design quite simple almost like selecting fasteners, economical, and available for everyone, reducing tooling expenses and inventory. Spur gear terms and concepts gears educational systems.
Design and optimization of 2stage reduction gearbox. Spur gear design and selection objectives apply principles learned in chapter 11 to actual design and selection of spur gear systems. These gears are also easier to design to fit given centre distances because there are. Jul 19, 2011 create a pair of gears using the following data. Design of spur gear using psg design data book complete. In order to design, build and discuss gear drive systems it is necessary to. Design and construction of bevel gear linkedin slideshare. Here well design a spur gear with equations, where all youve got to do is change 2 variables, then ta da.
By comparing the outcomes achieved with identical input data, one can assess the suitability and potential of the software programs for industrial and educational uses. Procedure for optimum design of a twostage spur gear system. Calculate forces on teeth of spur gears, including impact forces associated with velocity and clearances. Gear innovation has been produced and extended as the centuries progressed. Selecting gears in metric unit the gear tooth profile of the spur gear will be in module. Conversely, for a given power, helical gears can be made more compact than a spur set. Introduction to gear design introduction albert einstein once said. In the software kisssoft we apply the problem with the objective function of minimizing of volume of gear trains. 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.
Chapter 9 spur gear design 1 chapter 9 spur gear design pinion gear 2 lecture steps. 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. Basically the project involv es the design, modelling and manufacturing of helical gears in marine applications. They are compact and easy to install and offer constant velocity ratio. The teeth of gear is parallel to the axis of shaft. Procedure for tooth contact analysis of a face gear meshing. Helical gears are superior to spur gears in most applications, especially where noise must be kept to a minimum, or the pitch line speed is in excess of 10 ms. Tech in 2015 from svr engineering college,nandhyala, a.
The procedure may be easily extended to other types of gearing systems. Scribd is the worlds largest social reading and publishing site. 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. Pdf an intelligent system for spur gear design and analysis. Introduction gear design requires an iterative process to determine those design. Nov 11, 2017 the complete procedure of design of spur gear is explained in this video step by step in very easy manner. Online gear calculation of spur and helical gears with involute gear sizes of individual wheel and gears pairing easy, fast and completely free. Horse power, speed of the driver, speed ratio, working life, working conditions. There are no great advances in gear technology described. Design of spur gear machine design spur gear gear design design of machinemdgtu spur gear design duration.
Pdf procedure for optimum design of a twostage spur. Design of spur gears spur gear can be modeled similar. Determine allowable force on gear teeth, including the factors necessary due to. Procedure for tooth contact analysis of a face gear. 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.
It has the largest applications and, also, it is the easiest to manufacture. Since, i am working in the metric unit every dimension will be in mm. Design shapes of spur gears khk gears gear manufacturer. Clarify specifications and determine basic elements 2. At the same time, it is well known that universal standard tools. Mechanical design of transmission systems spur gears and parallel axis helical gears. 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. Introduction modern gear design is generally based on standard tools. Gear design, computer aided analysis, gear hobbing, gear shaving, structural analysis 1. Spur gearset has been designed and verified using three software programs and an analytical approach. Diametral pitch 12 number of teeth 12 pressure angle 20 calculations excel spread sheet re. The number of teeth for spur gears is given by where k 1f fll1 for fulld tht th08f tbt th d ldepth teeth, 0. Spur gear this is a cylindrical shaped gear in which the teeth are parallel to the axis.
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