文章分析了在切削力、重力和顶尖顶紧力的作用下，超细长轴车削加工中常见的工件缺陷的产生原因。
Have analysed in the role that cuts force, gravity and center very tight force take off, exceed the common workpiece defect in slender axle turning processing produce reason.
超精密切削是超精密加工中的一个重要领域，它是一项内容广泛的新技术。
Super precision cutting is a important field of super precision machining, and it is a broad new technic.
PCBN刀具是一种重要的超硬材料刀具，被广泛认为是应用于现代切削加工的理想刀具材料。
PCBN is one kind of the important superhard tool materials and is widely supposed to be an ideal tool material for modern cutting technology.
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