| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Cutting experiments were carried out by varying the axial relief angle of an end mill of a diameter of 0.5 mm from 0 to 15 degrees with a step of 5 degrees, and tool wear and surface roughness was evaluated. The result revealed that tool wear of a small end mill with an axial relief angle of 0 degree was smaller by 60% than that of 15 degrees, suggesting that tool wear is reduced more with a smaller axial relief angle. The average of roughness height of the finished surface was less than 200 nm.
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