Title: Milling force-based machining parameter optimisation for titanium-alloy surface

Authors: Jian-Wei Ma; Zhen-Yuan Jia; De-Ning Song; Feng-Ze Qin; Xiao-Xuan Zhao; Li-Kun Si

Addresses: Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China ' Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

Abstract: High-speed milling is often utilised for machining titanium-alloy curved surface parts. Due to the geometrical characteristic change of the curved surface parts, the milling-force fluctuates frequently, which not only induces machine-tool vibration but also is harmful to the processing quality of the machined parts and the tool life. This study conducts the optimising selection of machining parameters on account of reducing the cutting-force fluctuation for high-speed milling of titanium-alloy curved surface parts. Experimental studies indicate that in high-speed milling of titanium-alloy curved surface parts, the recommended cutting velocity and feed per tooth are 197.8 m•min−1 and 0.025 mm•z−1 respectively, and the recommended range of cutting depth is larger than 0.5 mm within the strength limitation of cutting tool. With the recommended machining parameters, the cutting-force fluctuation ratio is smaller, and then the machining quality can be guaranteed for the titanium-alloy curved surface parts in high-speed milling.

Keywords: machining parameters; milling force; titanium alloy; curved surface; high-speed.

DOI: 10.1504/IJMMM.2018.089473

International Journal of Machining and Machinability of Materials, 2018 Vol.20 No.1, pp.64 - 77

Received: 04 May 2017
Accepted: 26 Jun 2017

Published online: 26 Jan 2018 *

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