TA15钛合金深孔钻削试验研究

Experimental research on deep hole drilling of TA15 titanium alloy

以难加工材料TA15钛合金为研究对象,采用正交试验设计方法,研究内排屑深孔钻削钻头断屑槽圆弧半径、机床主轴转速和进给量在钻削过程中对切屑形态的影响规律。试验表明:钻头断屑槽的圆弧半径是影响切屑形态的主要因素,机床主轴转速和进给量为次要因素;优化后的工艺参数选取断屑槽圆弧半径为0.8 mm,主轴转速为255 r/min,进给量为0.45 mm/r时,切削过程平稳,排屑顺畅。

Taking the difficult-to-machine material TA15 titanium alloy as the research object,the orthogonal experiment design method is used to study the influence of the chip breaker size,the machine spindle speed and the feed rate on the chip shape during the drilling process.Experiments show that the size of the chip breaker of the drill is the main factor that affects the chip shape,and the spindle speed and feed of the machine tool are secondary factors;the optimized process parameters select the chip breaker arc radius to be 0.8 mm,and the spindle speed to be 255 r/min,when the feed rate is 0.45 mm/r,the cutting process is stable and chip removal is smooth.