八、铣刀切削速度,送刀量及切削深度　铣刀切削时,因切削及摩擦而发生热量,如果铣刀温度过高,就会失去硬度而致损坏。切削任何材料所发生的热量均与材料硬度及勒性等有关,越硬越勒的材料所发生的热量越多,因之切削速度必须减低。送刀量及切削深度,也需要看实际情况给以适当减小 Eight, milling cutter cutting speed, feed the amount and depth of cut Milling cutter, due to cutting and friction and heat, if the cutter temperature is too high, it will lose hardness and damage. The heat generated by cutting any material is related to the hardness of the material and the reluctance. The harder the material of the harder is, the more heat is generated and the cutting speed must be reduced. Send knife and cutting depth, but also need to see the actual situation to be properly reduced