| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Outline of Final Research Achievements |
The behavior of the material adhered to the cutting edge of inserts was evaluated based on the comparison of the profiles of the surfaces machined in turning with the shapes and sizes of the inserts. The turning tests of an austenitic stainless steel SUS304, a titanium alloy Ti6Al4V, and a Ni based super alloy were conducted. The behavior of the adhered material was more stable than we expected. The adhered layer near the cutting edge was very stable, while the growth or breakage of the adhered material happened on the surface of the stable layer. This unstable layer was responsible for the deterioration of surface finish. The thicker the unstable layer is, the higher the surface roughness is. The adhered layer did not vanish even in high cutting speed.
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