Estimation of Contact Pressure between Bearing and Bearing Housing by Means of Ultrasonic Waves

Abstract

When measuring the contact pressure of the joint, it is suggested that a method using ultrasonic waves has a marked feature, i.e., continuous applicability to the sliding or rotating joint without changing the state of contact. This paper reports a newly proposed parameter for the evaluation of contact pressure of cylindrical joint for spindle system of machine tools. Wavelet transform shows a noteworthy effect to extract the characteristics of joint. From the experimental results, the relationship between the radial run-off of spindle and the contact pressure of the joint in working condition has been discussed.