| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Research Abstract |
A newly developed infrared radiation pyrometer equipped with two optical fibers is used to measure the cyclic temperature variation beneath the rake face of a cutting tool in end milling. A theoretical analysis is conducted using a semi-infinite rectangular corner model. In up milling, the temperature beneath the rake face increases gradually during the cutting period and reaches a maximum just after the cutting. In down milling, the temperature increases immediately after cutting starts ; it reaches a maximum and then begins to decrease during cutting. The temperature gradient toward the inner direction of the tool insert is about 300 degrees Celsius per 0. 5 mm. The effect of a cutting time on a tool wear is small
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