Abstract

In order to optimize the position of the micro-texture on the negative chamfering edge ball-end milling cutter, the experiment of milling titanium alloy with the negative chamfering micro-texture ball-end milling cutter was carried out. The effects of micro-texture at different placement positions (rake and flank faces of cutting tools) on cutting performance were compared when the cutting depth was 0.3 mm, and the effects of negative chamfering and micro-texture parameters on cutting performance of the cutter were studied. Finally, the negative chamfering and micro-texture parameters were optimized based on genetic algorithm. The results show that the micro-texture of the flank face can improve the cutting performance, and the negative chamfering angle and width have the greatest influence on the cutting performance. The parameter optimization results are: the negative chamfering angle is 10.016°, the negative chamfering width is 199.995 μm, the micro-pit diameter is 49.996 μm, the micro-pit spacing is 174.004 μm, and the micro-pit distance from the edge is 109.993 μm. The above research realizes high efficiency and high-quality machining of titanium alloy.

摘要

为了优化负倒棱球头铣刀上的显微纹理位置，进行了用负倒角显微纹理球头铣刀铣削钛合金的实验。比较了切削深度为0.3 mm时不同放置位置（刀具前刀面和后刀面）的微观纹理对切削性能的影响，以及负倒角和微观纹理参数对刀具切削性能的影响学习了。最后，基于遗传算法对负倒角和微纹理参数进行了优化。结果表明，后刀面的微观纹理可以提高切削性能，负倒角角度和宽度对切削性能的影响最大。参数优化结果为：负倒角角度为10.016°，负倒角宽度为199.995 μm，微坑直径为49.996 μm，微坑间距为174.004 μm，微坑距边缘的距离为109.993 微米。以上研究实现了钛合金的高效、优质加工。