Study on Micro Litter MQL Machining

微量微量润滑加工研究

• 批准号: 17360060
• 负责人: OBIKAWA Toshiyuki
• 金额: $ 9.77万
• 依托单位: The University of Tokyo (2007)Tokyo Institute of Technology (2005-2006)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360060/
• 关键词: MQL; Eco-machining; Computational Fluid Dynamics; Cutting Oil; Micro Surface Texture; 切削加工; 極微量化; 超音波振動; 微量化

MQL (Minimum Quantity Lubrication) cutting is the most promising environmental conscious machining method with wide applicability. A small amount of cutting oil is sprayed with compressed air to the cutting point. MQL cutting often showed almost the same cutting performance as wet cutting. However, generation of oil mist may cause health hazard and degradation of factory environment. Thus, in this study, machining technology with cutting oil less than 1 ml/h is investigated as an environmental conscious machining of next generation and applied to a difficult-to-machine material, Inconel 718.First, an innovative cutting tool for MQL machining was developed to concentrate oil mist to the cutting point. This tool can guide the oil mist to the tool tip and decrease the tool wear. It was found that in turning, oblique spraying from the side of minor flank face is very effective for reducing the tool wear : tool life using oblique spraying at an oil consumption rate of 1.1 ml/h is almost as long as that of wet cutting.Next, the flow of oil mist was visualized for optimizing the spraying conditions of oil mist. A general-purpose code of computational fluid dynamics and 3D-CAD for shape modeling were used in this analysis and applied to three types of oil mist nozzles : ordinary type, cover type for normal spraying, and cover type for oblique spraying. Velocity, pressure and vorticity of the air calculated for the three nozzles clearly showed that the oblique spraying can carry the oil mist to the cutting point most effectively.

MQL（最小量润滑）切削是最有前途的环保加工方法，具有广泛的适用性。少量切削油用压缩空气喷到切削点。MQL切削通常表现出与湿切削几乎相同的切削性能。然而，油雾的产生可能会导致健康危害和工厂环境的恶化。因此，在这项研究中，切削油小于1毫升/小时的加工技术，作为下一代的环境意识的加工和应用到难加工材料，Inconel 718。首先，一个创新的MQL加工刀具的开发集中油雾的切削点。该工具可将油雾引导至刀尖，减少刀具磨损。结果表明，在车削加工中，从副后刀面侧斜向喷射对减少刀具磨损非常有效，在1.1ml/h的油消耗率下，斜向喷射的刀具寿命与湿切削的刀具寿命相当。采用通用计算流体力学软件和三维CAD造型技术，对普通型、正喷罩型和斜喷罩型三种油雾喷嘴进行了数值模拟。对三种喷嘴的速度、压力和涡量的计算表明，斜向喷雾能最有效地将油雾带到切割点。

项目成果

Finete Difference Modeling of Cutting Temperature in Machining of A6061-T6 Aluminum Alloy at Ultra High Cutting Speeds

A6061-T6铝合金超高切削速度加工切削温度的精细差分建模

• 发表时间: 2007
• 期刊: Key Engineering Materials 329
• 作者: Toshiyuki Obikawa;Ali Basti;Jun Shinozuka
• 通讯作者: Jun Shinozuka

Tools with built-in thin film thermocouple sensors for monitoring cutting temperature

• DOI: 10.1016/j.ijmachtools.2006.09.007
• 发表时间: 2007-04-01
• 期刊: INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
• 影响因子: 14
• 作者: Basti, Ali;Obikawa, Toshiyuki;Shinozuka, Jun
• 通讯作者: Shinozuka, Jun

MQL切削における切削油剤の極微量化

最大限度地减少 MQL 切削中的切削液用量

• 发表时间: 2005
• 期刊: 2005年度精密工学会秋季大会学術講演会講演論文集
• 作者: 釜田康裕;篠塚淳;中山功介;帯川利之
• 通讯作者: 帯川利之

Effects of Pinpoint Oil Mist Jet on Flank Wear in Turning of Incone1 718

精密油雾喷射对 Incone1 718 车削中后刀面磨损的影响

• 发表时间: 2006
• 作者: Yasuhiro Kamata;Kousuke Nakayama;Jun Shinozuka and Toshiyuki Obikawa
• 通讯作者: Jun Shinozuka and Toshiyuki Obikawa

Effects of Pinpoint Oil Mist Jet on Flank Wear in Turning of Inconel 718

精确油雾喷射对 Inconel 718 车削后刀面磨损的影响

• 发表时间: 2006
• 期刊: Proceedings of the Eighth International Conference on Progress of Machining Technology(ICPMT'2006), Matsue
• 作者: Yasuhiro Kamata;Kousuke Nakayama;Jun Shinozuka;Toshiyuki Obikawa
• 通讯作者: Toshiyuki Obikawa