Download or read book Instantaneous Kinematic Analyses of Spur and Helical Gear Pairs Having Runout and Wobble Errors written by Sarah S. Case and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a two-dimensional model is proposed for determining theoretical contact lines, tooth separation, and approximated loaded transmission error with frequency spectra thereof, as well as various other output variables such as instantaneous center distance, operating pressure angle, and instantaneous contact ratio when circular runout error is applied to either or both gears in a spur or helical gear pair. As an addendum, a method for calculating off-line of action tooth separation using this model is described for spur gears. Additionally, a three-dimensional model is proposed for determining theoretical contact lines and tooth separation when any combination of circular runout or wobble error are applied to either or both gears in a spur or helical gear pair. Sample analyses are shown for spur and helical gear pairs with runout error applied using the two-dimensional model, and a helical gear pair with various combinations of runout and wobble error applied using the three-dimensional model. The results are discussed qualitatively with respect to the expected effects the applied errors would have on the tooth separation and related variables.
Download or read book A Dynamic Load Distribution Model for Helical Gear Pairs Having Various Manufacturing Errors written by Michael Alan Benatar and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation research focuses on developing and experimentally validating a three-dimensional load distribution model for helical gear pairs that is suitable for both quasi-static and dynamic conditions. As one phase of this research, the modeling work is carried out in two main steps. The first step focuses on quasi-static conditions by (i) developing a generalized procedure to define instantaneous contact lines along the gear mesh interface, (ii) formulating the flexibility introduced by the support structures such as bearings and shafts in a systematic way, and (iii) including gear blank related manufacturing errors such as eccentricity and wobble. The contact problem under these conditions, governed by compatibility and equilibrium equations, are solved by using an iterative elastic contact algorithm. In the second step, dynamic effects are included in the model of the first step to develop a dynamic load distribution model of a helical gear pair having the same novel features of the quasi-static model. For this, the compatibility equations of the quasi-static model are coupled to the equations of motion in the state-space representation and solved by using a backward Euler method. The other phase of this research is focused on validation of the quasi-static and dynamic load distribution models. As very little experimental helical gear data is available in the literature, an experimental study is conducted to generate an extensive database for validation of the models of this study as well as for guiding future helical gear modeling efforts. The experimental study considers a family of unity-ratio helical gear pairs having varying amounts of micro-geometry modifications as well as several spur gears having certain manufacturing errors. An encoder-based measurement system is devised to quantify the static transmission error at various transmitted torque levels to form Harris charts and define the design load values. An accelerometer-based measurement system is also incorporated with the same setup to evaluate the dynamic transmission error of the same test articles within wide speed ranges of operation. The predictions of the proposed models are compared to the experimental measurements to demonstrate that the models are accurate under both quasi-static and dynamic conditions, with or without gear blank related manufacturing errors. Given their computational efficiency, the proposed models with their novel capabilities are suitable for design optimizations studies.
Download or read book Development of a Digital Data Acquisition and Analysis System for the Measurement of Dynamic Transmission Error of Spur and Helical Gear Pairs written by Michael Heskamp and published by . This book was released on 2007 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In this thesis, digital data acquisition software is developed and implemented with an accelerometer-based instrumentation for the measurement of motion transmission errors of parallel-axis gear pairs operating under dynamic conditions. This system digitizes the acceleration signals from diametrically opposed tangential transducers mounted on each gear wheel to determine angular accelerations of both the mating gears. These signals are combined and integrated twice to obtain the dynamic transmission error (DTE) along the line of action. The measured DTE is processed under constant speed or sweep-up and sweep-down conditions to determine the harmonic content of the steady-state vibration response as well as transient response in the form of waterfall plots. The DTE values obtained by using the digital method are compared to those obtained from an analog system to show a good correlation. The digital data acquisition and analysis system is then used to measure the DTE of a number of example spur and helical gears having different modifications and contact ratios. At the end, capabilities and limitations of this approach for measuring DTE are discussed.
Download or read book An Experimental Investigation Into the Influence of Various Errors on the Transmission Error and Root Stresses of Spur Gears written by Mark Robert Milliren and published by . This book was released on 2011 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: In this study, an experimental investigation is performed to investigate the impact of various gear errors on transmission error and root fillet stresses. A test set-up is devised to operate a pair of spur gears under loaded, low-speed conditions. Two measurement systems; one an optical encoder-based transmission error measurement system and the other a multi-channel strain measurement system, are developed and implemented with the test set-up. A set of test gears having various types and tightly-controlled magnitudes of manufacturing errors are designed and procured. These errors include indexing errors of different tooth sequences, pitch line run-out errors and lead wobble errors. An extensive test matrix is executed to quantify the impact of these errors on the loaded static transmission error and the root stresses of the spur gears. At the end, the same test conditions are simulated by using a recent feature of gear analysis model (LDP) to assess the accuracy of its predictions.
Download or read book Bevel Gear written by Jan Klingelnberg and published by Springer. This book was released on 2016-03-25 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to offer a complete presentation of bevel gears. An expert team of authors highlights the areas of application for these machine elements and presents the geometrical features of bevel gears as well as the various gear cutting processes based on gear cutting theory. The aspect of three-dimensional gearing is assessed in detail in terms of flank design, load capacity and noise behavior. A representation of production processes with the required technologies provides a knowledge base on which sound decisions can be based. The authors offer a thorough introduction to the complex world of bevel gears and present the rapid advances of these machine elements in a detailed, comprehensible manner. This book addresses design engineers in mechanical engineering and vehicle manufacturing, as well as producers of bevel gears and students in mechanical engineering.
Download or read book Gear Materials Properties and Manufacture written by Joseph R. Davis and published by ASM International. This book was released on 2005 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: All of the critical technical aspects of gear materials technology are addressed in this new reference work. Gear Materials, Properties, and Manufacture is intended for gear metallurgists and materials specialists, manufacturing engineers, lubrication technologists, and analysts concerned with gear failures who seek a better understanding of gear performance and gear life. This volume complements other gear texts that emphasize the design, geometry, and theory of gears. The coverage begins with an overview of the various types of gears used, important gear terminology, applied stresses and strength requirements associated with gears, and lubrication and wear. This is followed by in-depth treatment of metallic (ferrous and nonferrous alloys) and plastic gear materials. Emphasis is on the properties of carburized steels, the material of choice for high-performance power transmission gearing.
Download or read book Gear Drive Systems written by Peter Lynwander and published by CRC Press. This book was released on 2019-01-22 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This outstanding reference provides the complete range of practical and theoretical information - with over 250 detailed illustartions, fugures and table- needed to design, manufacture and operate reliable, efficient gear drive systems, emphasizing parallel shaft and planetary units with spur and helical gearing.
Download or read book Machine Tool Metrology written by Graham T. Smith and published by Springer. This book was released on 2016-04-06 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximizing reader insights into the key scientific disciplines of Machine Tool Metrology, this text will prove useful for the industrial-practitioner and those interested in the operation of machine tools. Within this current level of industrial-content, this book incorporates significant usage of the existing published literature and valid information obtained from a wide-spectrum of manufacturers of plant, equipment and instrumentation before putting forward novel ideas and methodologies. Providing easy to understand bullet points and lucid descriptions of metrological and calibration subjects, this book aids reader understanding of the topics discussed whilst adding a voluminous-amount of footnotes utilised throughout all of the chapters, which adds some additional detail to the subject. Featuring an extensive amount of photographic-support, this book will serve as a key reference text for all those involved in the field.
Download or read book Gears written by Vincenzo Vullo and published by Springer Nature. This book was released on 2020-01-24 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores the geometric and kinematic design of the various types of gears most commonly used in practical applications, also considering the problems concerning their cutting processes. The cylindrical spur and helical gears are first considered, determining their main geometric quantities in the light of interference and undercut problems, as well as the related kinematic parameters. Particular attention is paid to the profile shift of these types of gears either generated by rack-type cutter or by pinion-rack cutter. Among other things, profile-shifted toothing allows to obtain teeth shapes capable of greater strength and more balanced specific sliding, as well as to reduce the number of teeth below the minimum one to avoid the operating interference or undercut. These very important aspects of geometric-kinematic design of cylindrical spur and helical gears are then generalized and extended to the other examined types of gears most commonly used in practical applications, such as: straight bevel gears; crossed helical gears; worm gears; spiral bevel and hypoid gears. Finally, ordinary gear trains, planetary gear trains and face gear drives are discussed. Includes fully-developed exercises to draw the reader's attention to the problems that are of interest to the designer, as well as to clarify the calculation procedure Topics are addressed from a theoretical standpoint, but in such a way as not to lose sight of the physical phenomena that characterize the various types of gears which are examined The analytical and numerical solutions are formulated so as to be of interest not only to academics, but also to designers who deal with actual engineering problems concerning the gears
Download or read book A Dictionary of Mining Mineral and Related Terms written by United States. Bureau of Mines and published by . This book was released on 1968 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes about 55,000 individual mining and mineral industry term entries with about 150,000 definitions under these terms.
Download or read book Gear Noise and Vibration written by J. Derek Smith and published by CRC Press. This book was released on 2003-04-08 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on over 40 years of consultation and teaching experience, Gear Noise and Vibration demonstrates logical gear noise and vibration approaches without the use of complex mathematics or lengthy computation methods. The second edition offers new and extended discussions on high- and low-contact ratio gears, lightly loaded gears, planetary and spli
Download or read book Mechanical Design Engineering Handbook written by Peter Childs and published by Butterworth-Heinemann. This book was released on 2013-09-02 with total page 839 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Design Engineering Handbook is a straight-talking and forward-thinking reference covering the design, specification, selection, use and integration of machine elements fundamental to a wide range of engineering applications. Develop or refresh your mechanical design skills in the areas of bearings, shafts, gears, seals, belts and chains, clutches and brakes, springs, fasteners, pneumatics and hydraulics, amongst other core mechanical elements, and dip in for principles, data and calculations as needed to inform and evaluate your on-the-job decisions. Covering the full spectrum of common mechanical and machine components that act as building blocks in the design of mechanical devices, Mechanical Design Engineering Handbook also includes worked design scenarios and essential background on design methodology to help you get started with a problem and repeat selection processes with successful results time and time again. This practical handbook will make an ideal shelf reference for those working in mechanical design across a variety of industries and a valuable learning resource for advanced students undertaking engineering design modules and projects as part of broader mechanical, aerospace, automotive and manufacturing programs. - Clear, concise text explains key component technology, with step-by-step procedures, fully worked design scenarios, component images and cross-sectional line drawings all incorporated for ease of understanding - Provides essential data, equations and interactive ancillaries, including calculation spreadsheets, to inform decision making, design evaluation and incorporation of components into overall designs - Design procedures and methods covered include references to national and international standards where appropriate
Download or read book Modern Marine Engineer s Manual written by Alan Osbourne and published by Cornell Maritime Press/Tidewater Publishers. This book was released on 1965 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume II of the manual that has been absolutely indispensable to the ship's engineer for over forty years was completely updated by a team of practicing marine engineers in 1991. Chapters on obsolete equipment were deleted; those on systems that are still current were updated; and new chapters were written to cover the innovations in materials, machines, and operating practices that evolved recently.
Download or read book Anagram Solver written by Bloomsbury Publishing and published by Bloomsbury Publishing. This book was released on 2009-01-01 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anagram Solver is the essential guide to cracking all types of quiz and crossword featuring anagrams. Containing over 200,000 words and phrases, Anagram Solver includes plural noun forms, palindromes, idioms, first names and all parts of speech. Anagrams are grouped by the number of letters they contain with the letters set out in alphabetical order so that once the letters of an anagram are arranged alphabetically, finding the solution is as easy as locating the word in a dictionary.
Download or read book AMST 05 Advanced Manufacturing Systems and Technology written by Elso Kuljanic and published by Springer Science & Business Media. This book was released on 2005-07-01 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufacturing a product is not difficult, the difficulty consists in manufacturing a product of high quality, at a low cost and rapidly. Drastic technological advances are changing global markets very rapidly. In such conditions the ability to compete successfully must be based on innovative ideas and new products which has to be of high quality yet low in price. One way to achieve these objecti ves would be through massive investments in research of computer based technology and by applying the approaches presented in this book. The First International Conference on Advanced Manufacturing Systems and Technology AMST87 was held in Opatija (Croatia) in October 1987. The Second International Conference on Advanced Manufacturing Systems and Technology AMSV90 was held in Trento (Italy) in lune 1990. The Third, Fourth, Fifth and Sixth Conferences on Advanced Manufacturing Systems and Technology were all held in Udine (Italy) as follows: AMST93 in April 1993, AMST96 in September 1996, AMST99 in June 1999 and AMST02 in June 2002.
Download or read book Manufacturing Engineering Handbook written by Hwaiyu Geng and published by McGraw Hill Professional. This book was released on 2004-07-13 with total page 1193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let our teams of experts help you to stay competitive in a global marketplace. It is every company's goal to build the highest quality goods at the lowest price in the shortest time possible. With the Manufacturing Engineering Handbook you'll have access to information on conventional and modern manufacturing processes and operations management that you didn't have before. For example, if you are a manufacturing engineer responding to a request for proposal (RFP), you will find everything you need for estimating manufacturing cost, labor cost and overall production cost by turning to chapter 2, section 2.5, the manufacturing estimating section. The handbook will even outline the various manufacturing processes for you. If you are a plant engineer working in an automotive factory and find yourself in the hot working portion of the plant, you should look up section 6 on hot work and forging processing. You will find it very useful for learning the machines and processes to get the job done. Likewise, if you are a Design Engineer and need information regarding hydraulics, generators & transformers, turn to chapter 3, section 3.2.3, and you’ll find generators & transformers. Covering topics from engineering mathematics to warehouse management systems, Manufacturing Engineering Handbook is the most comprehensive single-source guide to Manufacturing Engineering ever published.
Download or read book Machinery Malfunction Diagnosis and Correction written by Robert C. Eisenmann and published by Prentice Hall. This book was released on 1998 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specific, practical guidance for every individual involved with solving process machinery problems. The single source reference for explanations of fundamental machinery behavior, static and dynamic measurements, plus data acquisition, processing and interpretation. A variety of lateral and torsional analytical procedures, and physical tests are presented and discussed.
