不分离型超声椭圆振动切削力特性研究
收稿日期: 2013-03-22
修回日期: 2013-05-29
网络出版日期: 2013-06-14
基金资助
国家自然科学基金(51205005)
Study on the Unseparated Ultrasonic Elliptical Vibration Cutting Force
Received date: 2013-03-22
Revised date: 2013-05-29
Online published: 2013-06-14
Supported by
National Natural Science Foundation of China (51205005)
分离型超声椭圆振动切削加工效率低的特点阻碍了超声椭圆振动切削技术的广泛应用和进一步发展。为拓展超声椭圆振动切削技术的应用领域,在分析了超声椭圆振动切削过程的基础上,深入研究了不分离型超声椭圆振动切削降低平均切深抗力的有效性机理,并在此基础上分析了速度系数和切深方向振幅对切深抗力的影响,揭示了不分离型超声椭圆振动切削逆变区及动态前角是降低平均切深抗力的主要原因,给出了速度系数对降低切削力失效的判断公式,并通过实验验证了不分离型超声椭圆振动切削具有降低切削力和提高加工过程稳定性的优势。这对于发挥超声椭圆振动切削技术优势,拓宽其应用领域具有重要的意义。
李文 , 尹礁 , 吕垒平 , 徐明刚 , 张德远 . 不分离型超声椭圆振动切削力特性研究[J]. 航空学报, 2013 , 34(9) : 2241 -2248 . DOI: 10.7527/S1000-6893.2013.0294
The low machining efficiency of separated ultrasonic elliptical vibration cutting limits its application and development. To promote the application of this technology, the paper presents a study of the mechanism of unseparated ultrasonic elliptical vibration cutting which reduces cutting force based on an analysis of the cutting process. It also analyze the effect of velocity coefficient and cutting depth direction amplitude on cutting force, reveals the main causes for the reduced cutting force in unseparated ultrasonic elliptical vibration cutting are the inverter area and dynamic rake angle, and also give the failure judgment formula of velocity coefficient for reducing the cutting force. The experiment proves that unseparated ultrasonic elliptical vibration cutting reduces the cutting force effectively and improves the process stability. This is significant for the ultrasonic elliptical vibration cutting to extend its application field.
Key words： unseparatedness; cutting force; vibration; inverter area; dynamic rake angle
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