中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 22 Special 3 December 2012 |
Ultrasonic-assisted vibration tapping using taps with different coatings
（1. Tahua University of Science and Technology, Hsinchu 30740;
2. National Taipei University of Technology, Taipei 10608）
Abstract:A machine vision for assessing and inspecting the ratio of thread areas associated with fixed frequency (FF) and limited tracing frequency (LTF) ultrasonic-assisted vibration was presented using differently coated taps after tapping of Ti?6Al?4V alloys. Experimental results indicate that TiAlN Micran taps yield the best tapping quality for different coatings and tapping conditions. TiAlN Micran coated taps with LTF make the largest improvement over traditional tapping (TT), with an average increase of 30.2 %.
Key words: tapping; fixed frequency; limited tracing frequency; Ti?6Al?4V alloys
