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Effect of Pinion Profile Modification on Rack and Pinion Steering Gear
Technical Paper
2005-01-1273
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Low rack gain and high reduction gear ratio in the case of Rack and Pinion Steering (RPS) gear of an automobile puts a limit on pinion diameter. The tooth strength for small diameter pinion is achieved by reducing the number of teeth. Undercutting is avoided by resorting to a pinion profile shift. The profile shift has effect on frictional characteristics of the steering gear. Considerable higher tooth load makes it important to consider the friction variation. This variation in friction is responsible for variation in steering effort. In order to reduce the undesirable torque variation, contribution of pinion profile modification to the variation in torque is analyzed by taking into account the friction variation and sliding velocities.
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Citation
Kamble, N. and Saha, S., "Effect of Pinion Profile Modification on Rack and Pinion Steering Gear," SAE Technical Paper 2005-01-1273, 2005, https://doi.org/10.4271/2005-01-1273.Also In
References
- Baxter, J. Bishop, A. E. 1985 “New Rack and Pinion Steering and Manufacturing Technology,” 841199, Transactions of SAE 5.391 5.398
- Shimizu, Y. Kawai, T. Yuzurita, J. 1999 “Improvements in Driver-Vehicle System Performance by Varying Steering Gain with Vehicle Speed and Steering Angle,” SAE Transactions, Journal of Passenger Cars, Sec. 6, Part 1, 1999-01-0395
- Baxter, J. Wou, J. S. Oste, T. D. 2001 ‘Modeling of Mesh Friction and Mechanical Efficiency of Rack and Pinion Steering System’ Steering and Suspension Technology Symposium 2001 45 56
- Gilliespie, T. D. 1999 ‘Fundamentals of Vehicle Dynamics’ Publication of Society of Automobile Engineers, Inc. Warrendale, PA.
- Merrit, G. H. 1971 Gear Engineering Pitman Publishing NY.
- Lynwander, P. 1983 Gear Tooth Design, Gear Drive Systems, Design and Applications Marcel Dekker, Inc. NY 21 92
- Wilson, C. E. Sadler, J. P. Michels, J. W. 1983 Kinematics and Dynamics of Machinery, Helical worm and Bevel Gears - Design and Analysis Harper and Row Publishers NY 408 452
- Haigh J. Fawcett J. N. 2003 Effects of Misalignment on Load Distribution in Large Face width Helical Gears Proceedings of Institute of Mechanical Engineers, Journal of Multibody Dynamics 217 93 98
- Michalec, G.W. 1966 Inherent Gear Errors, Precision Gearing - Theory and Practices John Wiley and Sons, Inc. NY 56 80
- Velex, P. Sainsot, P. 2002 An Analytical Study of Tooth Friction Excitations in Errorless Spur and Helical Gears Journal of Machines and Mechanism Theory 37 641 658
- Lin, J. Parker, R. 2002 Mesh Stiffness Variation Instabilities in Two Stage Gear Systems Transactions of ASME 124 68 76
- Mabie, H. H. Ocvirk, F. W. 1978 Mechanisms and Dynamics of Machinery John Wiley and Sons
- Smith J. D. 1983 Gears and Their Vibrations Gear-box Modelling Marcel Dekker, Inc. 103 116
- Buckingham, E. 1963 Analytical Mechanics of Gears, Efficiencies of gears Dover Publications NY 1949 395 425