Title: Geometric analysis of variable ratio steering gear

Authors: T. Yanai, N. Hitomi, M. Higuchi

Addresses: Senior Research Engineer, Central Engineering Laboratories, Nissan Motor Co., Ltd., Yokosuka-shi, Japan. ' Senior Research Engineer, Central Engineering Laboratories, Nissan Motor Co., Ltd., Yokosuka-shi, Japan. ' Senior Research Engineer, Central Engineering Laboratories, Nissan Motor Co., Ltd., Yokosuka-shi, Japan

Abstract: This paper examines the geometric relationships between the rack and pinion (sector) gears which compose a variable ratio steering gear, and investigates a universal method for analyzing these gear teeth surfaces. The proposed analytical method was applied to an investigation of a ball and screw type steering system. Various geometric characteristics of the sector tooth surface generated by the plane rack tooth surface were studied. Tooth design characteristics such as undercut limit and tooth profile interference were obtained.

Keywords: vehicle design; geometric analysis; variable ratio steering gears; recirculating ball steering systems; rack and pinion; tooth profile; intermeshing pitch curves.

DOI: 10.1504/IJVD.1983.061321

International Journal of Vehicle Design, 1983 Vol.4 No.4, pp.402 - 412

Available online: 25 May 2014 *

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