【摘要】 微细铣削是微小型零件的主要加工方法之一，微细铣削过程中产生的毛刺对微小型零件使用性能具有重要影响。通过分析微细铣削毛刺中顶端毛刺和出口毛刺的形成机理，随后进行单因素微细铣削试验，并观察毛刺形态特征，测量毛刺宽度尺寸。结果表明：随着每齿进给量的减小，逆铣边和顺铣边的毛刺形态分别由羽毛状毛刺和锯齿状毛刺转变为竖直状毛刺，顶端毛刺尺寸先略微下降后迅速增大，出口毛刺尺寸先逐渐下降后趋于稳定，最小顶端毛刺尺寸为8.6μm，最大顶端毛刺尺寸可达到144.9μm。铣削深度的减小和主轴转速的提高，顶端毛刺和出口毛刺尺寸均逐渐减小。更多还原

【Abstract】 Micro milling is one of the main methods to manufacture micro parts. The burr formation that generated in micro milling process has great effect on the service performance of micro parts. The formation mechanism of top burr and exit burr in micro milling were analyzed,then the single factor micro milling experiments were performed,the burr shapes were observed and the burr sizes were measured. The results showed that with the decrease of feed per tooth,the top burr morphology on up milling side and down milling side respectively varies from feather shape and serration shape to vertical shape,and the top burr size firstly slightly decreases and then rapidly increases,the exit burr size firstly decreases and then becomes stable. The minimum top burr size is 8.6μm and the maximum top burr size is 144.9μm. With the decrease of milling depth and the increase of spindle speed,both the top burr size and exit burr size gradually decrease.更多还原