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Ductile Cutting of brittle materials by Applying Ultrasonic Vibration

应用超声波振动对脆性材料进行延展性切割

基本信息

批准号：
05452138
负责人：
MORIWAKI Toshimchi
金额：
$ 4.54万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452138/
关键词：
Ultrasonic vibration cutting Cutting mechanics Ductile cutting Brittle materials Tool life Diamond tool Critical depth of cut

项目摘要

The objectives of this research have been successfully attained after two years of research. The major research results obtained are as follows ;1. Mechanics of vibration cuttingFundamental cutting tests were carried out within a scanning electron microscope, and the processes of vibration cutting were observed directly and compared by changing the direction of the tool vibration. It was clarified that the chip thickness and the cutting force are influenced considerable by the direction, and that the thickness and the force are much reduced as compared to those obtained by the ordinary cutting when the inclination angle of the tool vibration is negative. It was found that the reduction is caused by the small chip generated between the main chip generation.2. Effects of tool vibration on ductile cutting of glassIt was found that ultrasonic vibration cutting is advantageous for ductile cutting of glass. The critical depth of cut is increased, and the profile of cutting edge is better transferred to that of cut groove by applying the ultrasonic vibration.3. Ductile cutting of brittle materialsTransparent cutting of soda-lime glass and optical glass BK7 was realized by the ultrasonic vibration cutting, and the surface roughness was about 0.03-0.06 mum Rmax. Ductile cutting of various brittle materials such as single crystal materials (LiNb03, Si) and ceramics (ZiO2) was tried by the conventional diamond cutting and the ultrasonic vibration cutting, but no important advantages have been found in this case.

经过两年的研究，本研究的目标已成功实现。取得的主要研究成果如下：1.振动切削机理在扫描电子显微镜下进行了基本切削试验，通过改变刀具振动方向，直接观察和比较了振动切削过程。结果表明，切屑厚度和切削力受方向的影响很大，当刀具振动的倾斜角为负时，切屑厚度和切削力比普通切削得到的切屑厚度和切削力大大减小。研究发现，切屑的减少是由主切屑生成之间产生的小切屑引起的.刀具振动对玻璃延性切削的影响研究发现超声振动切削有利于玻璃延性切削。超声振动的应用提高了临界切削深度，使切削刃的轮廓更好地转化为切槽的轮廓.脆性材料的韧性切削采用超声振动切削方法实现了钠钙玻璃和光学玻璃BK 7的透明切削，表面粗糙度Rmax约为0.03-0.06 μ m。通过常规金刚石切削和超声振动切削尝试了各种脆性材料如单晶材料（LiNbO 3、Si）和陶瓷（ZiO 2）的延性切削，但是在这种情况下没有发现重要的优点。