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- Title
Mechanism modeling and validation in ultrasonic vibration assisted drilling with variable cross section drilling tool of brittle materials.
- Authors
Wang, Yan; Lin, Bin; Dong, Yinghuai; Zhao, Jingnan; Zhang, Xiaofeng; Yang, Shuo; Ouyang, Jiacheng
- Abstract
Ultrasonic vibration assisted drilling (UAD) is used for brittle materials machining for many years, but the processing mechanism in UAD is still not clear, especially in edge chipping damage aspect. A new cutting force model is presented for UAD in this paper, and the cutting force forming and changing can be clearly described in drilling process. Depending on the mathematic model, the entering hole cutting force and exiting hole cutting force can be predicted, the exit edge chipping damage phenomena can be theoretically relieved due to the cutting force control. The variable cross section drilling tool is used for verify the theoretical deduction, and significant improvement in hole exit shape accuracy is presented by the experiment results. In order to reveal the working function of ultrasonic energy, the dynamic relationship between ultrasonic parameters and drilling parameters is carried out. The influence of processing parameters on drilling quality is analyzed in theory and validated by experiment. Smaller edge chipping size and good surface integrity can be obtained by process technology optimizing.
- Subjects
BRITTLE materials; CUTTING force; MODEL validation; MACHINING; ELECTRON work function; CUTTING (Materials)
- Publication
International Journal of Advanced Manufacturing Technology, 2019, Vol 103, Issue 5-8, p3137
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-019-03762-7