Study on the influence of meso-geometrical features on milling force in precision machining of titanium alloy

ABSTRACT

Titanium Alloy is a typical material difficult to be processed for its characteristics of low thermal conductivity, and high chemical activity, which result in tool wear and the poor quality of the machined surface. In order to solve the problems existing in the processing of Titanium Alloy, considering the tool edge, micro-texture is implanted into the cemented carbide ball end milling cutter. The article analyzes the influence law of micro-texture and the tool edge radius of ball end milling cutter on mechanical properties of Titanium Alloy, establishes and verifies a mechanical predictive model of milling Titanium Alloy with ball end milling cutter surface based on the effect of micro-texture and the tool edge. Finally, with regard to the minimum cutting force as the target, the article uses genetic algorithm to optimize meso-geometrical features parameters of the cemented carbide ball end milling cutter. The article also provides the foundation for efficient and high-quality processing of Titanium Alloy.

KEYWORDS:

• Ball end milling cutter
• genetic algorithm
• meso-geometrical features
• milling force model
• titanium alloy

Funding

Study on wear resistance mechanism of meso-gemetric features of cutting tiool and its influence on high speed milling surface [51375126].