1995 Fiscal Year Final Research Report Summary
HIGH-SPEED CUTTING WITH ENDMILL TOOLS MADE OF CERAMICS
| Project/Area Number |
06650153
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
機械工作・生産工学
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| Research Institution | KANAZAWA INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
SHINTANI Kazuhiro KANAZAWA INSTITUTE OF TECHNOLOGY, DEPARTMENT OF MECHANICAL ENGINNERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (80139758)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Hideharu KANAZAWA INSTITUTE OF TECHNOLOGY, DEPARTMENT OF MECHANICAL ENGINNERING, ASSISTAN, 工学部, 助手 (90278101)
UEKI Masanori NIPPON STEEL CORPORATION, ADVANCED MATERIALS & TECHNOLOGY RESEARCH LABORATORIES,, 先端技研, 主幹研究員
FUJIMURA Yoshio KANAZAWA INSTITUTE OF TECHNOLOGY, DEPARTMENT OF MECHANICAL ENGINNERING, PROFESSO, 工学部, 特任教授 (80064418)
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| Project Period (FY) |
1994 – 1995
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| Keywords | CERAMICS / CUTTING TOOL / MACHINING / ENDMILL / TOOL WEAR / HIGH SPEED CUTTING |
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| Research Abstract |
Recently, the mechanical properties of ceramic materials were improved, especially their tougthness. The applicationfield of the Si_3N_4-based ceramics as cutting tools has been specified in the high-speed machining of gray cast irons. In paticular, self-reinforced Si_3N_4 with acicular beta-grains and other Si_3N_4-based ceramic tools exhibited high performance under severe cutting conditions.
In this note, a trial using ceramic endmill tools made of Si_3N_4-based material has been described. The effect of tool geometry on the cutting performace of the ceramic endmill tool under high-speed cutting conditions was investigated.
Results obtained can be summarized as follows.
(1) The finished surface of the workpice machined by the ceramic endmill tool was better for a tool with a helix angle.
(2) Wear property of the ceramic ball-endmill tool was superior under the high-speed cutting condition (V=1500m/min) to that under the low-speed condition (V=300m/min).
(3) The finished surface obtained in high-speed cutting by the ceramic ball-endmill tool was smooth, exhibiting low degree of roughness.
(4) The ceramic ball-endmill tool can be successfully applied to high-speed milling of gray cast iron.
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