Development of automatic variable preload device for spindle bearing by using centrifugal force |
| |
| Authors: | Young Kug Hwang Choon Man Lee |
| |
| Affiliation: | 1. Ph.D Program of Mechanical and Aeronautical Engineering, Feng Chia University, No. 100 Wenhwa Rd., Seatwen, Taichung 40724, Taiwan ROC;2. Department of Mechanical and Computer-Aided Engineering, and Electroacoustic Graduate Program, Feng Chia University, No.100 Wenhwa Rd, Seatwen, Taichung 40724, Taiwan ROC;1. School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia;2. Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar 31952, Kingdom of Saudi Arabia;1. State Key Laboratory for Manufacturing Systems Engineering, Xi''an Jiaotong University, Xi''an 710049, People''s Republic of China;2. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi''an Jiaotong University, Xi''an, 710049, People''s Republic of China;1. Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi''an Jiaotong University, Xi''an, 710049, China;2. State Key Laboratory for Manufacturing Systems Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi, 710049, PR China;1. Department of Mechanical Engineering, Middle East Technical University, Ankara 06800, Turkey;2. Manufacturing Research Laboratory, Sabanci University, ?stanbul 81474, Turkey |
| |
| Abstract: | Machine tool spindles of late require high stiffness and fast rotation characteristics all at once for high-speed, high-efficient processing, as well as for a wide range of use rotation. As such, many studies are being carried out on automatic variable preload control methods that apply a preload to a spindle rolling bearing as an alternative to the existing fixed position preload and constant pressure preload methods. This paper introduces a newly structured automatic variable preload device that can automatically adjust the preload applied to spindles employing a rolling bearing. It proposes an automatic variable preload device with a completely new composition comprising of a main bearing to which the preload is applied, an auxiliary bearing that conveys the force and a centrifugal element that converts the centrifugal force into a force in the axial direction, and a constant pressure preload spring that applies the initial preload to the main bearing. Other changes in the centrifugal force are also presented. The proposed composition was validated through a contact nonlinear analysis, and the design data necessary to create a prototype were obtained. A prototype for the automatic variable preload device using centrifugal force was then created and tested to confirm that the preload device of the proposed structure runs properly and smoothly. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
