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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 44985 (08)
- University: Sharif University of Technology
- Department: Mechanical Engineering
- Advisor(s): Movahhedi, Mohammad Reza
- Abstract:
- Today, the need for high-speed machine tools, in areas such as defense, medical and electronic for producing parts with millimeter dimensions, and with features smaller than the millimeter, increased. To meet this need, the machine tool can be used with smaller dimensions and with high speed. These machines are able to produce these parts with high production rates.The project aims to improve technical design and construction of a micro spindle to achieve sustained speed about one hundred thousand RPM. In this project, the first step in understanding the fundamentals of the theory and the system components, and the whole operation was performed. The design is based on studies carried out in the context of the analysis conducted on the spindle components. After the design phase, construction began on the device based on past experiences. Manufacturing tolerances can be noted as technical consideration, which requires a high accuracy in producing air bearings. Machine tool driving torque supplied by an air turbine and spindle shaft placed on the air bearings. Bearings, turbine and air channels are designed based on air flow analysis using CFD software.After fabrication and assembly, testing apparatus was performed successfully, and spindle reached to the desired speed
- Keywords:
- Air Turbine ; High Speed Machining ; Air Bearing ; Micromachinig ; High Speed Microspindle ; Spindle
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