整个开孔刀的外形呈削去球冠的球形。
The shape of the whole boring cutter is of a sphere without a spherical cap.
卧式铣床支架的支承轴承的精度会影响刀杆的回转精度，从而影响孔的尺寸精度和圆柱度。
The precision of the support bearing of the horizontal milling machine bracket affects the rotation precision of the cutter rod, thus affecting the dimension precision and cylindricity of the hole.
一种加工细长孔的刚性镗刀。
Disclosed is a rigid boring cutter for machining a slender hole.
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