钛合金TB6刀具磨损铣削实验研究

摘要

Tool wear was studied using orthogonal experiment method while milling titanium alloy TB6 in different milling parameters.The flank face wear was measured by the photomicrograph after a certain period of milling during the milling process.The regression equation of TB6 tool wear was established by the experimental data.The experimental data indicated that the tool wear mainly occurred on the flank face and mostly showing a banded wear.The length of the band increases with the cutting speed increases.The brittle failure was occrured and the adhension of titanium was found on the tool face.The parameters effect on the tool life were cutting speed,feed speed,cutting width and cutting depth in turn.The regression equation has good regression variance and can predict the tool life well.%使用硬质合金刀具对钛合金TB6进行正交铣削实验,对比分析不同切削参数下的刀具磨损情况,并用实验结果进行回归分析得到刀具磨损的回归公式.结果表明:刀具主要磨损在后刀面,其磨损大都呈现一条带状磨损带,在速度增大时大磨损带变长,刀具易发生脆性破损,且在刀具表面会出现钛合金粘连;对刀具耐用度的影响大小依次为切削速度、进给量、切削宽度和切削深度;刀具磨损回归方程具有良好的回归方差,能够很好的对刀具寿命进行预测.