超高速铣削的理论研究

THEORY ON SUPER HIGH-SPEED MILLING

多年研究表明，利用现有的切削理论，已经无法再成十倍的提高切削速度。一种新的超高速铣削理论被提出，它的思想是：一方面利用挤压变形和摩擦，提高工件切削区的温度，使工件的强度和硬度显著下降；另一方面，设法保持刀具的温度在３００℃以下，使硬度保持不变；从而实现了刀具硬度与工件硬度比的大量增加，实现了 ｖｃ＝８ ５００ ｍ／ｍｉｎ超高速铣削。本理论已经生产验证，表明本理论的正确性。

The research indicates it is impossible that cutting speed is improved decuple in accordance with present cutting theory. A new theory on super high - speed milling is Put forward, in milling machining, the temperature of cutting zone increases as a result of distortion and friction, strength and hardness descend prominently. On the other hand, the temperature of cutting tool is kept under 300℃ and the hardness is invariable, so the ratio of cutting tool and workpiece hardness increases and super high - speed (Vc = 8 500 m/min) milling is achieved. The theory has already been proved reasonable.