چکیده مقاله
Accurate and realistic modeling of high speed spindles is essential for design of precision high speed machine tools The bearings play an essential role in the dynamic performance of the spindles and their behavior is usually nonlinear In this work, a five DOF simplified model for angular contact ball bearings is presented which takes into account the effects of high speed rotation on variation of the contact angles of the inner and the outer rings of the bearing The model uses an average contact angle calculated at each rotational speed It is shown that considering the changes in contact angles has a small effect on dynamic behavior of the bearing for typical range of spindle speeds currently available on most high speed machine tools Therefore, the presented model can be safely used for modeling of the spindle bearings in such spindles with reasonable accuracy and reduced computational cost
کلیدواژهها
نویسندگان
M. Masjedi
Research Assistant School of Mechanical Engineering,,Sharif University of Technology, Tehran, Iran
M.R Movahhedy
Associate Professor, Corresponding Author School of Mechanical Engineering,,Sharif University of Technology, Tehran, Iran
M Behzad
Associate Professor School of Mechanical Engineering,,Sharif University of Technology, Tehran, Iran
شیوه ارجاع
Masjedi, M. and Movahhedy, M.R and Behzad, M,1386,Dynamic Analysis of High Speed Spindles Based on a Simplified Model for Angular Contact Bearings,02nd Tehran International Congress on Manufacturing Engineering (TICME2007),Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید10 اسفند 1386 · تهران