In order to further improve the processing performance of rotary ultrasonic machining (RUM), a novel longitudinal–torsional-coupled (LTC) vibration was applied to the RUM. An experimental study on quartz glass was performed to access the feasibility of the LTC-RUM of a brittle material. The LTC-RUM was executed through the addition of helical flutes on the tool of conventional longitudinal RUM (Con-RUM). The experimental results demonstrated that the LTC-RUM could reduce the cutting force by 55% and the edge chipping size at the hole exit by 45% on an average, compared to the Con-RUM. Moreover, the LTC-RUM could also improve the quality of the hole wall through the reduction of surface roughness, in particular, when the spindle speed was relatively low. The mechanism of superior processing performance of LTC-RUM involved the corresponding specific moving trajectory of diamond abrasives, along with higher lengths of lateral cracks produced during the abrasives indentation on the workpiece material. The higher edge chipping size at the hole entrance of LTC-RUM indicated a higher length of lateral cracks in LTC-RUM, due to the increase in the maximum cutting speed. Furthermore, the effect of spindle speed on the cutting force and surface roughness variations verified the important role of the moving trajectory of the diamond abrasive in the superior processing performance mechanism of LTC-RUM.
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Research-Article
Feasibility Study of Longitudinal–Torsional-Coupled Rotary Ultrasonic Machining of Brittle Material
Jianjian Wang,
Jianjian Wang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China;
Tsinghua University,
Beijing 100084, China;
Department of Mechanical and
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Search for other works by this author on:
Jianfu Zhang,
Jianfu Zhang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Search for other works by this author on:
Pingfa Feng,
Pingfa Feng
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China;
Tsinghua University,
Beijing 100084, China;
Division of Advanced Manufacturing,
Graduate School at Shenzhen,
Tsinghua University,
Shenzhen 518055, China
Graduate School at Shenzhen,
Tsinghua University,
Shenzhen 518055, China
Search for other works by this author on:
Ping Guo,
Ping Guo
Department of Mechanical and
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Search for other works by this author on:
Qiaoli Zhang
Qiaoli Zhang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Search for other works by this author on:
Jianjian Wang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China;
Tsinghua University,
Beijing 100084, China;
Department of Mechanical and
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Jianfu Zhang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Pingfa Feng
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China;
Tsinghua University,
Beijing 100084, China;
Division of Advanced Manufacturing,
Graduate School at Shenzhen,
Tsinghua University,
Shenzhen 518055, China
Graduate School at Shenzhen,
Tsinghua University,
Shenzhen 518055, China
Ping Guo
Department of Mechanical and
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Automation Engineering,
The Chinese University of Hong Kong,
Hong Kong 999077, China
Qiaoli Zhang
State Key Laboratory of Tribology,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
1Corresponding author.
Manuscript received July 6, 2017; final manuscript received November 29, 2017; published online March 6, 2018. Assoc. Editor: Guillaume Fromentin.
J. Manuf. Sci. Eng. May 2018, 140(5): 051008 (11 pages)
Published Online: March 6, 2018
Article history
Received:
July 6, 2017
Revised:
November 29, 2017
Citation
Wang, J., Zhang, J., Feng, P., Guo, P., and Zhang, Q. (March 6, 2018). "Feasibility Study of Longitudinal–Torsional-Coupled Rotary Ultrasonic Machining of Brittle Material." ASME. J. Manuf. Sci. Eng. May 2018; 140(5): 051008. https://doi.org/10.1115/1.4038728
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