苏联某铸钢厂的模型车间,在加工铝合金模型的时候采用了一种有效的端铣刀,因而消除了普通端铣刀容易磨损及变钝的缺陷。新的端铣刀有3～4个粗大的楔形刀齿,齿距很大,它的楔角等于40°,排屑槽的截面适当放大,槽底的圆弧半径从1.5公厘加大到3.5～5公厘(按铣 A model shop in a Soviet steel mill used an effective end mill when machining aluminum models, thereby eliminating the drawbacks of plain end mills that are subject to wear and bluntness. The new end mill has 3 to 4 coarse wedge-shaped cutter teeth, great pitch, its wedge angle is equal to 40 °, the cross section of the chip flute is enlarged properly, the arc radius at the bottom of the groove is increased from 1.5 mm 3.5 to 5 mm (by milling