Most drilling in metal is done with a twist drill.
大多数金属钻孔用的是麻花钻头。
A twist drill is designed to drill a hole which has a particular size.
麻花钻用来钻削具有一定尺寸的孔。
How to machine twist drill high efficiently and high precisely is a problem to discuss.
如何高效、高精度地加工出合格的麻花钻一直是在探讨的问题。
On the basis of helicoid theory and computational geometry, the sectional contours of a sample twist drill were found for producing similar twis1t drills.
本文利用螺旋面理论。结合计算几何知识，根据-麻花钻实物求出了加工该工件用的二次圆盘刀具截形。
On the basis of helicoid theory and computational geometry, the sectional contours of a sample twist drill were found for producing similar twis1t drills.
本文利用螺旋面理论。结合计算几何知识，根据-麻花钻实物求出了加工该工件用的二次圆盘刀具截形。
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