Ford Motor Company Limited

Ming T Loo

Joseph Paul Tekelly

Michael David Deegan

Jeffrey Lawrence Laya

James M Hanford

Garry J Schleicher

Laike Misikir

A method of verifying spindle bearing functionality prior to service, comprising: assembling a machine-tool spindle having an outer housing rotatably supporting an inner spindle shaft about a spindle axis by use of roller bearing sets, at least one set being compressed along the spindle axis to promote a resilient bearing preload force between the housing and shaft; suspending the housing of said assembly on a non-resonating flexible support, the spindle shaft being essentially isolated from the housing except for the preloaded rolling bearing set; sharply striking the inner spindle shaft along said spindle axis to induce an axially oscillating frequency; measuring the oscillating frequency in the shaft as it is affected by the degree of bearing preload of such at least one bearing set; and comparing the measured induced frequency to a known frequency analysis for the type of spindle assembly which is correlated to varying bearing preloads, the comparison indicating the spindle bearing functionality prior to service.

Method of verifying spindle bearing functionality prior to service

An energy absorbing bolster (32) is provided for attachment to downward facing surfaces of an energy absorbing steering column support bracket (24). The bolster (32) includes longitudinally spaced mounting flanges (40, 42) for securement to the support bracket (24) and a energy absorbing linkage (44) arranged between the mounting flanges, the linkage taking the form of front and rear carrier portions (64, 46), depending from the support bracket and a bridge portion (66), and a load transfer portion (68) arranged between them.

Energy absorbing bolster assembly

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Dearborn, MI, United States of America

Ming T Loo