منابع مشابه
Thermal Model of High-Speed Spindle Units
For the purpose to facilitate development of high-speed Spindle Units (SUs) running on rolling bearings, we have developed a beam element model, algorithms, and software for computer analysis of thermal characteristics of SUs. The thermal model incorporates a model of heat generation in rolling bearings, a model of heat transfer from bearings, and models for estimation of temperature and temper...
متن کاملRotor Dynamic Response of a High-Speed Machine Tool Spindle
In high-speed machining, the maximum stable depth of cut at any spindle rotating frequency depends on the spindle-holder-tool dynamic stiffness as reflected at the tool’s free end. Because this dynamic stiffness can vary with rotating frequency, we have modeled the spindle dynamic response using a finite element-based rotordynamics approach. The spindle shaft is modeled using beam finite elemen...
متن کاملComprehensive Measurement and Evaluation System of High-speed Motorized Spindle
Original scientific paper Reducing the manufacturing time is the trend of high precision manufacturing, and the precision of a work-piece is very important for the manufacturing industry. The high-speed motorized spindle is the most critical part and becoming more widely used in the machine tool at present, and its precision may affect the overall performance of high-speed cutting. Most of the ...
متن کاملμ Control of a High Speed Spindle Thrust Magnetic Bearing
Experimental results demonstrate that μ synthesis provides an excellent tool for increasing the dynamic stiffness of thrust magnetic thrust bearings. Accurate system modeling and appropriate uncertainty descriptions are critical to obtaining such results and are described in detail. Both complex μ and mixed μ synthesis were used to design controllers. The performance of the μ controllers is com...
متن کاملControl of a High Speed Machining Spindle via μ-Synthesis
Due to high surface speed and active control capabilities, active magnetic bearings hold great promise for high speed machining spindles. Herein, the control problem posed by this application is examined and the development of an advanced prototype is reviewed. A μ synthesis framework is proposed for this problem and it is shown that the minimization of the susceptibility to machining chatter m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Intelligent Information Management
سال: 2010
ISSN: 2160-5912,2160-5920
DOI: 10.4236/iim.2010.25036