Face Gear Drives PDF Download
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| Author | : Faydor L. Litvin |
| Publisher | : |
| Total Pages | : 108 |
| Release | : 2000 |
| Genre | : Gearing |
| ISBN | : |
Download Handbook on Face Gear Drives with a Spur Involute Pinion Book in PDF, ePub and Kindle
The use of face gears in power transmission and drive systems has a significant number of benefits. Face gears allow a variety of new transmission arrangements as well as high reduction ratio capability. This leads to drive system weight reduction and improvements in performance. In this work, basic information about the design and analysis of face gear drives is presented. The work considers face gears in mesh with spur involute pinions for both intersecting axes and offset drives. Tooth geometry, kinematics, generation of face gears with localized bearing contact by cutting and grinding, avoidance of tooth undercutting, avoidance of tooth pointing, tooth contact analysis, and algorithms for the simulation of meshing and contact are all topics which are discussed. In addition, applications of face gear drives are presented. Included are design uses in aerospace applications such as helicopter transmissions, split-torque face gear arrangements, comparisons of face gears with bevel gears, and general design considerations.
| Author | : |
| Publisher | : |
| Total Pages | : 52 |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
Download Face Gear Drive with Spur Involute Pinion: Geometry, Generation by a Worm, Stress Analysis Book in PDF, ePub and Kindle
A face gear drive with a spur involute pinion is considered. The generation of the face gear is based on application of a grinding or cutting worm whereas the conventional method of generation is based on application of an involute shaper. An analytical approach for determination of: (1) the worm thread surface, (2) avoidance of singularities of the worm thread surface, (3) dressing of the worm, and (4) determination of stresses of the face-gear drive, is proposed. A computer program for simulation of meshing and contact of the pinion and face-gear has been developed. Correction of machine-tool settings is proposed for reduction of the shift of the bearing contact caused by misalignment. An automatic development of the model of five contacting teeth has been proposed for stress analysis. Numerical examples for illustration of the developed theory are provided.
| Author | : National Aeronautics and Space Administration (NASA) |
| Publisher | : Createspace Independent Publishing Platform |
| Total Pages | : 106 |
| Release | : 2018-06-13 |
| Genre | : |
| ISBN | : 9781721088621 |
Download Handbook on Face Gear Drives with a Spur Involute Pinion Book in PDF, ePub and Kindle
The use of face gears in power transmission and drive systems has a significant number of benefits. Face gears allow a variety of new transmission arrangements as well as high reduction ratio capability. This leads to drive system weight reduction and improvements in performance. In this work, basic information about the design and analysis of face gear drives is presented. The work considers face gears in mesh with spur involute pinions for both intersecting axes and offset drives. Tooth geometry, kinematics, generation of face gears with localized bearing contact by cutting and grinding, avoidance of tooth undercutting, avoidance of tooth pointing, tooth contact analysis, and algorithms for the simulation of meshing and contact arc all topics which are discussed. In addition, applications of face gear drives are presented. Included are design uses in aerospace applications such as helicopter transmissions, split-torque face gear arrangements, comparisons of face gears with bevel gears, and general design considerations. Litvin, F. L. and Egelja, A. and Tan, J. and Chen, D. Y.-D. and Heath, G. Glenn Research Center NCC3-356; RTOP 581-30-13; DA Proj. 1L1-62211-A4-7A
| Author | : |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 1992 |
| Genre | : |
| ISBN | : |
Download Face-gear Drives: Design, Analysis, and Testing for Helicopter Transmission Applications Book in PDF, ePub and Kindle
| Author | : National Aeronautics and Space Administration (NASA) |
| Publisher | : Createspace Independent Publishing Platform |
| Total Pages | : 62 |
| Release | : 2018-05-31 |
| Genre | : |
| ISBN | : 9781720521433 |
Download Face Gear Drive with Helical Involute Pinion Book in PDF, ePub and Kindle
A new type of face-gear drive with intersected axes of rotation formed by a helical involute pinion and conjugated face-gear has been investigated. Generation of face-gears by a shaper free of undercutting and pointing has been investigated. A new method of grinding or cutting of face-gears by a worm of special shape has been developed. A computerized design procedure has been developed to avoid undercutting and pointing by a shaper or by a generating worm. Also, a method to determine the limitations of the helix angle magnitude has been developed. The method provides a localization of the bearing contact to reduce the shift of bearing contact caused by misalignment. The analytical method provides a simulation of the meshing and contact of misaligned gear drives. An automatic mesh generation method has been developed and used to conduct a 3D contact stress analysis of several teeth. The theory developed is illustrated with several examples.Litvin, Faydor L. and Fuentes, Alfonso and Gonzalez-Perez, Ignacio and Piscopo, Alessandro and Ruzziconi, PaoloGlenn Research CenterSHAPERS; GEAR TEETH; TRANSMISSIONS (MACHINE ELEMENTS); STRESS ANALYSIS; SINGULARITY (MATHEMATICS); HELICES; MECHANICAL ENGINEERING; AXES OF ROTATION; COMPUTER SYSTEMS DESIGN; CONJUGATION; MISALIGNMENT; POSITION (LOCATION); MECHANICAL DRIVES; HELICOPTERS; GRID GENERATION (MATHEMATICS)
| Author | : |
| Publisher | : |
| Total Pages | : 38 |
| Release | : 2001 |
| Genre | : |
| ISBN | : |
Download Design, Generation and Tooth Contact Analysis (TCA) of Asymmetric Face Gear Drive With Modified Geometry Book in PDF, ePub and Kindle
A new type of face gear drive for application in transmissions, particularly in helicopters, has been developed. The new geometty differs from the existing geometry by application of asymmetric profiles and double-crowned pinion of the face gear mesh. The paper describes the computerized design, simulation of meshing and contact, and stress analysis by finite element method. Special purpose computer codes have been developed to conduct the analysis. The analysis of this new type of face gear is illustrated with a numerical example.
| Author | : |
| Publisher | : |
| Total Pages | : 75 |
| Release | : 1967* |
| Genre | : |
| ISBN | : |
Download Grandview United Church 1891-1967, Past and Present. -- Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 46 |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
Download New Geometry of Worm Face Gear Drives With Conical and Cylindrical Worms: Generation, Simulation of Meshing, and Stress Analysis Book in PDF, ePub and Kindle
New geometry of face worm gear drives with conical and cylindrical worms is proposed. The generation of the face worm-gear is based on application of a tilted head-cutter (grinding tool) instead of application of a hob applied at present. The generation of a conjugated worm is based on application of a tilted head-cutter (grinding tool) as well. The bearing contact of the gear drive is localized and is oriented longitudinally. A predesigned parabolic function of transmission errors for reduction of noise and vibration is provided. The stress analysis of the gear drive is performed using a three-dimensional finite element analysis. The contacting model is automatically generated. The developed theory is illustrated with numerical examples.
| Author | : Faydor Litvin |
| Publisher | : |
| Total Pages | : 11 |
| Release | : 1992-10-01 |
| Genre | : |
| ISBN | : 9781555895822 |
Download Face Gear Drives Book in PDF, ePub and Kindle
| Author | : Ilés Dudás |
| Publisher | : Butterworth-Heinemann |
| Total Pages | : 337 |
| Release | : 2005-11-04 |
| Genre | : Technology & Engineering |
| ISBN | : 0080542743 |
Download The Theory and Practice of Worm Gear Drives Book in PDF, ePub and Kindle
Worm gears are special gears that resemble screws, and can be used to drive other gears. Worm gears, enable two non-touching shafts in a machine to mesh (join) together. This publication, unique in that it combines both theoretical and practical design aspects, including the latest results of research and development, provides detailed treatment of the theory and production of worm drives, as well as the overarching subject of production geometry of helicoidal surfaces.Included are mathematical models for a number of practical applications; a description of dressing equipment required; treatment of inspection and measurement; the use of intelligent systems; worm gearing for power transmission; selection criteria. · Covers theory and practice of the production and use of these common machine elements· Ideal for researchers and engineers dealing with mechanical drives, gears and manufacturing· The first single volume text in this diverse field
