立式振动钻床上麻花钻切削性能的研究

利用自行研制的立式振动钻床对麻花钻的振动切削性能进行了系统研究。结果表明，振动钻削可提高麻花钻的切削性能，实现切屑的自主控制，断屑可靠，排屑顺利，麻花钻入的定位精度，孔径尺寸精度，形状精度以及孔的表面质量均得到是明显改善，与普通钻削相比，刀具耐用度提高１．５倍以上。

A Research on Drilling on vibrating upright Drilling Machine with Twist Drill

A systematical research is made on the vibrating cutting properties of twist drills witha newly rebuilt vibrating upright drilling machine' It is proved that utilizing vibrating drilling canimprove the cutting behavior of twist drills, and, the chips can be actively controlled, reliablybroken and easily removed as well. Furthermore, the entering drilling accuracy of twist drill location, as well as the dimensional and form accuracy and surface finish of the drilled hole are obviously improved. Contrasted to conventional drilling, the tool life is increased by more than 1. 5times.