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Author : Jong Kil Lee
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (116 download)
Download or read book Simulation of Conditions of Meshing and Bearing Contact of Involute Helical Gears written by Jong Kil Lee and published by . This book was released on 1984 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computerized Simulation of Meshing of Conventional Helical Involute Gears and Modification of Geometry written by and published by . This book was released on 1997 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: An approach is proposed for computerized simulation of meshing of aligned and misaligned involute helical gears. Algorithms for TCA (Tooth Contact Analysis) computer programs were developed. Influence of misalignment on the shift of the bearing contact and transmission errors has been investigated. Numerical examples that illustrate the developed theory are provided.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722416652
Total Pages : 76 pages
Book Rating : 4.4/5 (166 download)
Download or read book Generation and Computerized Simulation of Meshing and Contact of Modified Involute Helical Gears written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-07 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and generation of modified involute helical gears that have a localized and stable bearing contact, and reduced noise and vibration characteristics are described. The localization of the bearing contact is achieved by the mismatch of the two generating surfaces that are used for generation of the pinion and the gear. The reduction of noise and vibration will be achieved by application of a parabolic function of transmission errors that is able to absorb the almost linear function of transmission errors caused by gear misalignment. The meshing and contact of misaligned gear drives can be analyzed by application of computer programs that have been developed. The computations confirmed the effectiveness of the proposed modification of the gear geometry. A numerical example that illustrates the developed theory is provided. Litvin, Faydor L. and Chen, Ningxin and Lu, Jian Unspecified Center...
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722123307
Total Pages : 24 pages
Book Rating : 4.1/5 (233 download)
Download or read book Computerized Simulation of Meshing of Conventional Helical Involute Gears and Modification of Geometry written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: An approach is proposed for computerized simulation of meshing of aligned and misaligned involute helical gears. Algorithms for TCA (Tooth Contact Analysis) computer programs were developed. Influence of misalignment on the shift of the bearing contact and transmission errors has been investigated. Numerical examples that illustrate the developed theory are provided. Litvin, F. L. and Lu, J. and Townsend, D. P. and Hawkins, M. Glenn Research Center NAG3-1822; RTOP 581-30-13; DA Proj. 1L1-62211-A-47-A...
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720629924
Total Pages : 68 pages
Book Rating : 4.6/5 (299 download)
Download or read book Modified Involute Helical Gears written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The computerized design, methods for generation, simulation of meshing, and enhanced stress analysis of modified involute helical gears is presented. The approaches proposed for modification of conventional involute helical gears are based on conjugation of double-crowned pinion with a conventional helical involute gear. Double-crowning of the pinion means deviation of cross-profile from an involute one and deviation in longitudinal direction from a helicoid surface. Using the method developed, the pinion-gear tooth surfaces are in point-contact, the bearing contact is localized and oriented longitudinally, and edge contact is avoided. Also, the influence of errors of alignment on the shift of bearing contact, vibration, and noise are reduced substantially. The theory developed is illustrated with numerical examples that confirm the advantages of the gear drives of the modified geometry in comparison with conventional helical involute gears.Glenn Research CenterCOMPUTER AIDED DESIGN; GEARS; STRESS ANALYSIS; COMPUTERIZED SIMULATION; VIBRATION
Author :
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computerized Generation and Simulation of Meshing of Modified Spur and Helical Gears Manufactured by Shaving written by and published by . This book was released on 2001 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modification of geometry of spur and helical gears with parallel axes and helical gears with crossed axes is proposed. The finishing process of gear generation is shaving. The purposes of modification of the gear geometry are to localize and stabilize the bearing contact, and to reduce noise and vibration. The goals mentioned above are achieved by using profile crowning and plunging the shaver by a prescribed motion during pinion generation. The pinion becomes double crowned. The gear member is generated as a conventional involute gear. A tooth contact analysis (TCA) program for simulation of meshing and contact was developed and the analysis is illustrated with TCA results for spur and helical gears.
Author :
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (946 download)
Download or read book Modified Involute Helical Gears: Computerized Design, Simulation of Meshing and Stress Analysis written by and published by . This book was released on 2003 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The computerized design, methods for generation, simulation of meshing, and enhanced stress analysis of modified involute helical gears is presented. The approaches proposed for modification of conventional involute helical gears are based on conjugation of double-crowned pinion with a conventional helical involute gear. Double-crowning of the pinion means deviation of cross-profile from an involute one and deviation in longitudinal direction from a helicoid surface. Using the method developed, the pinion-gear tooth surfaces are in point-contact, the bearing contact is localized and oriented longitudinally, and edge contact is avoided. Also, the influence of errors of alignment on the shift of bearing contact, vibration, and noise are reduced substantially. The theory developed is illustrated with numerical examples that confirm the advantages of the gear drives of the modified geometry in comparison with conventional helical involute gears.
Author : Faydor L. Litvin
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.3/5 (126 download)
Download or read book Generation and Computerized Simulation of Meshing and Contact of Modified Involute Helical Gears written by Faydor L. Litvin and published by . This book was released on 1995 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Faydor L. Litvin
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.F/5 ( download)
Download or read book Helical Gears with Circular Arc Teeth written by Faydor L. Litvin and published by . This book was released on 1987 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen P. Radzevich
Publisher : Springer Nature
ISBN 13 : 3031100190
Total Pages : 485 pages
Book Rating : 4.0/5 (311 download)
Download or read book Novikov/Conformal Gearing written by Stephen P. Radzevich and published by Springer Nature. This book was released on 2022-11-14 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest accomplishments in Novikov/conformal gearing as well as high-conformal gearing. It is focused primarily on strength calculation of gear teeth and the manufacturing of gears for Novikov/conformal and high-conformal gearing along with a brief discussion of achievements in the modern theory of gearing. The modern theory of gearing is the foundation of all optimal designs of gears, gear-sets, and transmissions of all known designs, as well as, of all those to be developed in the future. As even a small improvement in efficiency on a single gear can represent a significant cost saving, given the millions of gears used in industry every year, this volume provides the design and manufacturing engineer in invaluable resource.
Author : Faydor L. Litvin
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (317 download)
Download or read book Helical Gears with Circular Arc Teeth: Generation, Geometry, Precision and Adjustment to Errors, Computer Aided Simulation of Conditions of Meshing and Bearing Contact written by Faydor L. Litvin and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have proposed a method for generation of circular arc helical gears which is based on application of standard equipment, worked out all aspects of the geometry of gears, proposed methods for the computer aided simulation of conditions of meshing and bearing contact, investigated the influence of manufacturing and assembly errors, and proposed methods for the adjustment of gears to these errors. The results of computer aided solutions are illustrated with computer graphics.
Author : Stephen Radzevich
Publisher : Elsevier
ISBN 13 : 0128224509
Total Pages : 540 pages
Book Rating : 4.1/5 (282 download)
Download or read book High-Conformal Gearing written by Stephen Radzevich and published by Elsevier. This book was released on 2020-07-04 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of High-Conformal Gearing continues to address the kinematics and the geometry of conformal (Novikov) gearing and high-conformal gearing. The book deals with gears that feature convex-to-concave contact of the tooth flanks of a gear and a mating pinion. Gears of this type are commonly referred to as conformal gearings. Novikov gearing is the most widely known example of conformal gearing. The helical gearing by Wildhaber, Bramley-Moore (otherwise known as the Vivkers, Bostock, and Bramley gearing, or just V.B.B.-gearing), are well-known designs of gearing that are loosely referred to as conformal gearing. The principal differences between conformal gearing as well as high-conformal gearing and Wildhaber helical gearing are outlined. It also shows that Wildhaber helical gearing from one side, and Novikov gearing from another side, are two completely different gear systems that cannot be combined into a common gear system. This book aids mechanical, automotive, and robotics engineers specializing in gear design with successfully transmitting a rotation. It also serves as a resource for graduate students taking advanced courses in gear design. Discusses the kinematics and geometry of conformal and high-conformal gearing Provides a specific set of conditions which need to be met when designing conformal and high-conformal gears Outlines the principal differences between conformal, high-conformal and Wildhaber helical gearing
Author :
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computerized Generation and Simulation of Meshing and Contact of New Type of Novikov-Wildhaber Helical Gears written by and published by . This book was released on 2000 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report, we propose a new geometry for low-noise, increased-strength helical gears of the Novikov- Wildhaber type. Contact stresses are reduced as a result of their convex-concave gear tooth surfaces. The gear tooth surfaces are crowned in the profile direction to localize bearing contact and in the longitudinal direction to obtain a parabolic function of transmission errors. Such a function results in the reduction of noise and vibrations. Methods for the generation of the proposed gear tooth surfaces by grinding and hobbing are considered, and a tooth contact analysis (TCA) computer program to simulate meshing and contact is applied. The report also investigates the influence of misalignment on transmission errors and shift of bearing contact. Numerical examples to illustrate the developed approaches are proposed.
Author :
Publisher :
ISBN 13 :
Total Pages : 1072 pages
Book Rating : 4.:/5 (31 download)
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1986 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781723822124
Total Pages : 58 pages
Book Rating : 4.8/5 (221 download)
Download or read book Computerized Generation and Simulation of Meshing and Contact of New Type of Novikov-Wildhaber Helical Gears written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-19 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report, we propose a new geometry for low-noise, increased-strength helical gears of the Novikov-Wildhaber type. Contact stresses are reduced as a result of their convex-concave gear tooth surfaces. The gear tooth surfaces are crowned in the profile direction to localize bearing contact and in the longitudinal direction to obtain a parabolic function of transmission errors. Such a function results in the reduction of noise and vibrations. Methods for the generation of the proposed gear tooth surfaces by grinding and hobbing are considered, and a tooth contact analysis (TCA) computer program to simulate meshing and contact is applied. The report also investigates the influence of misalignment on transmission errors and shift of bearing contact. Numerical examples to illustrate the developed approaches are proposed. The proposed geometry was patented by Ford/UIC (Serial Number 09-340-824, pending) on June 28, 1999.Litvin, Faydor L. and Feng, Pin-Hao and Lagutin, Sergei A.Glenn Research CenterCOMPUTERIZED SIMULATION; GEAR TEETH; GEARS; GEOMETRY; TECHNOLOGY UTILIZATION; NOISE REDUCTION; VIBRATION DAMPING
Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computerized Design, Generation, and Simulation of Meshing and Contact of Face-Milled Formate Cut Spiral Bevel Gears written by and published by . This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new approach for design, generation, and computerized simulation of meshing and contact of face-milled, formate cut spiral bevel gears is presented. The purpose is to develop a low noise, stabilized bearing contact for this type of gear drives. The approach proposed is based on application of three procedures that permit in sequence, to provide a longitudinally directed bearing contact, a predesigned parabolic function of transmission errors and limit the shift of bearing contact caused by errors of alignment. The theory developed is illustrated with an example of design and computation.
Author :
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (317 download)
Download or read book Computerized Design and Generation of Low-noise Gears with Localized Bearing Contact written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
