| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Outline of Final Research Achievements |
In this research, a disturbance-compensating and energy-saving control method of an air turbine spindle equipped with a rotation control system designed for use in milling. A method for in-process tool wear estimation of an air turbine spindle, which is equipped with a rotation control system for ultra-precision milling is also introduced.
By controlling the supply pressure to the aerostatic bearing quickly and precisely, a method of realizing an air turbine spindle with variable stiffness without changing its size is proposed. An aerostatic bearing type air turbine spindle whose thrust and radial pneumatic supply circuits are separated from each other is developed and the validity of the proposed method is confirmed.
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