Dynamics Research On Titanium Alloy High-speed Plunge Milling Theory And Optimization Of Cutting Parameters

Plunge milling is accepted gradually in difficult-to-machining material field by its high cutting efficiency such as titanium alloy. But the research on plunge milling is underway no matter in domestic or abroad, and some cutting tools producers put forward some plunge milling tools which are lack of dynamics analysis at the same time. This paper researched cutting force and roughness under the condition of high speed cutting in plunge milling Titanium alloy which is used in aviation and spaceflight field widely, and also optimized the cutting parameters.First, Titanium alloy's characteristics and the form of shavings are introduced. We did experiment of cutting force in the way of quadratic orthogonal rotational combination design, then established the quadratic equation of cutting force using the data of experiment, analyzed the effects of cutting parameters for y and z directions cutting forces. As the same way, the quadratic equation of roughness was established, through ideal roughness, cutting speed and cutting vibration, the paper concluded how roughness formed, which could make the machining surface roughness to reach the finishing machining level, and gave some advice to the stability of high-speed plunge milling. In the end, to get the reasonable cutting parameters, the last chapter made use of GA, taking the productivity as target function, then got the optimized cutting parameters, and compared with those offered by cutting tool producer, cutting efficiency are increased double almost.These researches are made to do some help for deeper research on plunge milling and tool design.