超音波振動付加による超耐熱合金の被削性向上と切削機構解明

通过添加超声波振动提高超耐热合金的切削加工性并阐明切削机理

• 批准号: 12650116
• 负责人: ONIKURA Hiromichi
• 金额: $ 2.24万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650116/
• 关键词: Finish Turning; Super Heat-Resistant Alloy; Ultrasonic Vibration; Tool Wear; Surface Roughness; Coolant; Inconel 718; Liquid Nitrogen; 仕上げ旋削; 工具磨耗; 超耐熱合金インコネル718; 凝着; 切削温度の低下; 工具破損; 工具台の剛性; 振動方向

Finish turning of super heat-resistant alloy, Inconel 718, was tried in order to improve the machinability, assisted by twist-type ultrasonic-vibration equipment. CBN tools and TiAIN coated carbide tools were used with the supply, of ecological coolant.Before the cutting experiment it is made clear that the holding stiffness of ultrasonic vibration equipment and the workpiece must be kept high to perform the stable cutting without chatter vibration.The cutting experiment shows the following;(1) Generally, the application of u1. vibration to the CBN tools results in the growth of groove wear and flank wear and the deterioration of roughness of finished surface. This may be caused by the repetition of workpiece adhesion and peeling, and the lack of toughness of CBN.(2) The supply of vegetable oil to CBN tools gives less toot wear than compressed air.(3) The supply of new fluorocarbon refrigerant to CBN tools without u1. vibration may prevent more work adhesion and end groove wear than compressed air. But, in the cape of new fluorocarbon refrigerant, the breakage of end flank sometimes happen. This must be avoided.(4) With u1. vibration the supply of liquid nitrogen shows small roughness of about 2 μm near the theoretical value after cutting length of 111 m. This result may be attributed to the low adhesion of workpiece resulting from low cutting temperature. Concerning this result, further investigation is needed

为了改善超耐热合金Inconel 718的切削加工性能，采用扭振式超声波振动装置对Inconel 718进行精车加工。切削试验表明：（1）一般情况下，使用u1. 0的超声振动系统，切削速度快。振动对CBN刀具的影响主要是沟槽磨损和后刀面磨损的增加以及加工表面粗糙度的恶化。这可能是由于工件粘附和剥离的重复以及CBN的韧性不足造成的。(2)向CBN刀具供应植物油比压缩空气提供更少的齿磨损。(3)向CBN工具供应新的氟碳制冷剂，不含u1。与压缩空气相比，振动可以防止更多的工件粘附和端部凹槽磨损。但是，在新型氟碳制冷剂的应用中，端面断裂的现象时有发生。必须避免这种情况。(4)关于U1在111 m的切割长度后，液氮供应的振动显示出接近理论值的约2 μm的小粗糙度。这可能是由于切削温度较低，导致工件附着力较低所致。关于这一结果，还需要进一步的研究

项目成果

H. Onikura,T. Kanda, O. Ohnishi and A. Katsuki: "Ultrasonic Vibration Turning of Super Heat-Resistant Alloy Inconel 718 - Effect of Ultrasonic Vibration and Cutting Condition -"Transactions of Japan Society for Precision Engineering Conference held in Koc

H.奥尼库拉，T.

H. Onikura, T. Kanda, 0, Ohnishi and A. Katsuki: "Ultrasonic Vibration Turning of Super Heat-Resistant Alloy Inconel 718 - Tool Wear and Surface Roughness -"Transaction of Japan Society for Precision Engineering Conference held in Nagasaki. 17-18 (2001)

H. Onikura、T. Kanda、0、Ohnishi 和 A. Katsuki：“超耐热合金 Inconel 718 的超声波振动车削 - 刀具磨损和表面粗糙度 -”在长崎举​​行的日本精密工程学会会议论文集。