1.

図書

図書
研究代表者 細川晃
出版情報: [金沢] : [細川晃], 2008.5
シリーズ名: 科学研究費補助金(基盤研究C)研究成果報告書 ; 平成18年度~平成19年度
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2.

図書

図書
研究代表者 細川晃
出版情報: [金沢] : [細川晃], 2001.3
シリーズ名: 科学研究費補助金基盤研究(C)(2)研究成果報告書 ; 平成10年度〜平成12年度
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3.

論文

論文
野崎, 隆太郎 ; Al, Huda Mahfudz ; 上田, 隆司 ; 加藤, 賢一 ; 山田, 啓司 ; 細川, 晃
出版情報: 講演論文集.  2002  pp.37-38,  2002-03-08.  The Japan Society of Mechanical Engineers = 日本機械学会
URL: http://hdl.handle.net/2297/37052
4.

論文

論文
岡田, 将人 ; 細川, 晃 ; 田中, 隆太郎 ; 上田, 隆司
出版情報: 精密工学会誌 = Journal of the Japan Society of Precision Engineering.  75  pp.979-983,  2009-01-01.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/39091
概要: The cutting performance of some coated carbide tools in hardmilling of hardened steel is investigated. The cutting characteristics are mainly evaluated by tool wear and temperature at flank face for four types of coating films on two types of base materials. Cutting force and surface roughness are also examined. The temperature of cutting tool is measured using a two-color pyrometer with an optical fiber. The tool flank wear becomes large in the case of TiN and TiCN coated tools. The tool flank temperature increases with the increase of surface roughness of coated film, and reaches approximately 500°C for TiAlN/ AlCrN coated tool. On the other hand, the cutting forces do not change so much with surface roughness of coated film. In the case of P30-grade cemented carbide as base material, tool flank wear and flank temperature become large compared with K10- grade. The surface roughness of workpiece increases with the increase in tool flank temperature more than approximately 530°C. 続きを見る
5.

論文

論文
山田, 啓司 ; 西岡, 真吾 ; 細川, 晃 ; 上田, 隆司
出版情報: 精密工学会誌 = Journal of the Japan Society of Precision Engineering.  69  pp.120-124,  2003-01-05.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/39631
概要: Laser cleaving process is a prospective technique to divide a thin plate of brittle materials into small pieces, because of its high yield ratio and controllability. In addition, the process is carried out without coolant which causes the environmental pollution and the contamination of the electrical devices etched on the wafer. In this paper, laser cleaving of silicon wafer is conducted with pulsed Nd: YAG laser. The temperature of laser spot is measured by means of the two-color pyrometer with optical fiber and the acoustic emission caused by crack propagation is also observed. When the laser spot is scanned at the appropriate interval and velocity, the crack propagates in sequence by the corresponding laser irradiation. As a result, both high linearity of cleaved edge and fine fractured surface roughness are obtained. The thermal stress distribution induced by laser irradiation is analysed with FEM model, in which the stress intensity factor is calculated at the vicinity of the crack tip in order to clarify the criterion of crack propagation. The analysis and experiments reveal that the maximum tensile stress at the crack tip increases with temperature and the crack propagates when the stress intensity factor reaches the fracture toughness of the material. 続きを見る
6.

論文

論文
細川, 晃 ; 周, 智鵬 ; 山田, 啓司 ; 上田, 隆司
出版情報: Journal of the Japan Society for Precision Engineering, Contributed Papers = 精密工学会誌論文集.  70  pp.1527-1532,  2004-01-01.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/38635
概要: A new three-color infrared radiation pyrometer using an optical fiber is developed for measuring cutting temperature in high speed machining by small ball end mill. The high speed air spindle unit is adopted to the ordinary milling machine so that the maximum spindle revolution of 40000rpm is attainable. The ball radius of the carbide cutter is 3mm and the side cutting of carbon steel with ballnose is executed without cutting fluid. Cutting temperature distribution along the ball-nosed cutting-edge is measured. The influences of spindle rotational speed, radial depth of cut and feed per tooth on the temperature distribution at the flank face are examined. The maximum temperature of peripheral cutting edge about 700°C is obtained even at the rotation angle of 180° after cutting, and it drops along the ballnose toward the ball tip. Relatively large temperature gradient arises along the ball cutting-edge at higher spindle revolution because cutting speed depends on the local tool radius. Depth of cut and feed per tooth, at the same time, affect the overall temperature at the ball cutting edges. The cooling characteristics in air cutting reveals that the temperature difference during one cycle of intermittent cutting increases as spindle speed decreases. The relationship between the peripheral cutting speed and the tool temperature varies from tool shank to ball tip because the interactions between cutting edge and workpiece change along the ballnose. 続きを見る
7.

論文

論文
千徳, 英介 ; 上田, 隆司 ; 山田, 啓司 ; 細川, 晃
出版情報: Journal of the Japan Society for Precision Engineering, Contributed Papers = 精密工学会誌論文集.  71  pp.481-485,  2005-01-01.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/38634
概要: Laser forming of a sheet metal is the bending process caused by the thermal stresses which is produced in the sheet by l aser irradiation. Therefore, the temperature distribution in the sheet irradiated with laser beam is one of important factors to determine the bending angle of the sheet. In this study, the influence of temperature distribution and the experimental conditions like the diameter of laser beam and the thickness of a sheet on the bending angle is investigated experimentally. The temperatures of a surface irradiated with CO2 laser and its opposite surface are measured using an infrared radiation pyrometer with an optical fiber. As a result, the bending angle is directly proportional to the temperature Ts at the sheet surface irradiated with laser beam and the beam diameter D, and inversely proportional to the thickness h of the sheet. A parameter indicated by D1.41Ts1.5/h1.7 has high correlation with the all bending angles obtained under various experimental conditions. 様々な加工条件で板材のフォーミング加工を行い, 同時にレーザ照射部表面および裏面温度を測定し, 加工条件と照射温度の変形角への影響を調べた. その結果, 変形角はレーザビーム径の1.4乗に比例し, 照射温度の1.5乗に比例し, 加工物の板厚の1.7乗に反比例しており, これらの結果より導出した式は定性的に加工条件の変形角への影響を良く表している. 続きを見る
8.

論文

論文
田中, 隆太郎 ; 山根, 八洲男 ; 岡田, 将人 ; 細川, 晃 ; 上田, 隆司
出版情報: 精密工学会誌 = Journal of the Japan Society of Precision Engineering.  73  pp.803-807,  2007-01-01.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/38822
概要: This paper deals with the machinability of BN added Steels in end milling. The cutting tests were carried out by end milling carbon steel JIS S45C, S55C and these BN added steels with carbide tool and TiAlN coated carbide tool. Tool wear, cutting temperature, and, surface roughness were measured and discussed. In end milling BN added steel with square end mill, the progress rate of flank wear width was decreased and fracture at corner was suppressed in comparison with that in machining standard steel. In case of ball end mill, flank wear in end milling BN added steels were smaller in comparison with standard steel. In case of S45C, boundary wear was observed, however it was not observed in end milling BN added steel. BN added showed almost the same surface roughness as standard steel. The temperature of flank wear part in turning work based S55C were 50 °C higher in comparison with S45C base work. The temperature of throw away end mill was higher 100°C in comparison with solid square end mill. There were not significant difference between the temperature in end milling standard steel and BN added steels. 続きを見る
9.

論文

論文
山田, 啓司 ; 森田, 精一 ; 上田, 隆司 ; 細川, 晃 ; 田中, 隆太郎
出版情報: Journal of the Japan Society for Precision Engineering, Contributed Papers = 精密工学会誌論文集.  72  pp.393-397,  2006-03-05.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/38627
概要: In this paper, a refrigerating chuck system is developed to reduce the thermal damages of workpiece in laser cleaving process. The system reduces the surface temperature of table below the freezing point of water, and the work material is fixed on the table by the frozen water between the material and the table. The cooling capability of the system is investigated. The system is applied to the laser cleaving process of silicon wafer with cw-Nd:YAG laser. The laser cleaving experiment of silicon wafer is conducted with Nd:YAG laser, then the width of thermal affected zone on the irradiated surface, the roughness of fractured surface and the deviation of cleaving trajectory are measured. The silicon oxide is caused on the surface of wafer in the room temperature, but the refrigerating chuck can prevent the thermal damage and improve the reliability of the cleaving process. By use of the chuck, the smooth fractured surface is achieved and the linearity of the cleaving trajectory is also improved. 続きを見る
10.

論文

論文
田中, 隆太郎 ; 林, 勇伝 ; 田邉, 一真 ; 上田, 隆司 ; 細川, 晃
出版情報: 精密工学会誌 = Journal of the Japan Society of Precision Engineering.  73  pp.1025-1029,  2007-09-05.  精密工学会 = The Japan Society for Precision Engineering
URL: http://hdl.handle.net/2297/38916
概要: This study deals with the trial for improvement of chip controllability in turning with selective laser heat treatment for workpiece. Selective heat treatment for carbon steel JIS S45C was carried out with Nd:YAG laser which could be transmitted through an optical fiber and shows higher absorption rate against carbon steels than CO2 laser. In turning of these selective laser heat threatened carbon steel, the chip form changed regular curl from irregular curl and chip breakability was improved compared with non-laser treated carbon steel. Surface roughness was obviously smaller comparing with non-laser treated carbon steel. Especially in the case that the depth of cut was larger, the surface roughness was smaller. As for cutting force, the principal force was slightly smaller, but the thrust force and feed force were almost the same. The cutting temperature was slightly lower. The tool wear was almost same as that in the case of non-laser treated carbon steel. 続きを見る