Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (10): 1485-1489.DOI: 10.12068/j.issn.1005-3026.2018.10.023

• Mechanical Engineering • Previous Articles     Next Articles

Reducing Friction Mechanism of Superalloy Axial Ultrasonic Vibration Drilling

CHEN Shuo1,2, ZOU Ping1, TIAN Ying-jian1, MAO Liang1   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Department of Mechanical Engineering, Guidaojiaotong Polytechnic Institute, Shenyang 110023, China.
  • Received:2017-06-12 Revised:2017-06-12 Online:2018-10-15 Published:2018-09-28
  • Contact: ZOU Ping
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Abstract: In view of difficulties in drilling high-temperature alloys and large friction during drilling, ultrasonic machining was used. Firstly, the reducing friction mechanism of ultrasonic vibration was analyzed, the relationship between the average friction force and vibration parameters was constructed, and then the correlation between the average friction force and amplitude was obtained. An axial ultrasonic vibration drilling system was established, which was used to drill the superalloy. The results showed that the effect of amplitude on the surface quality of hole wall is consistent with anti-friction characteristics of ultrasonic vibration. Compared with that of the ordinary drilling, the production of optimized amplitude ultrasonic vibration drilling yields more regular chip morphology, smooth hole wall surface roughness, and better surface quality.

Key words: ultrasonic vibration drilling, reducing friction, amplitude, chip morphology, roughness

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