本专利介绍了带柄螺旋槽刀具(如麻花钻、铰刀、立铣刀)的挤压方法及工艺装备,这种挤压件挤后只需少量的精加工即可成为成品。这种挤压方法是将毛坯放在导套的孔内,用挤压杆迫使毛坯通过一个所需螺旋形的模子(模子的螺旋型孔应与导套的内孔轴向同心),挤到预定长度后,就停止挤压。 This patent describes the extrusion method and process equipment for shank helical grooved tools (such as twist drills, reamers, end mills) that can be finished with a small amount of finishing after squeezing. This extrusion method is to place the blank in the bore of the guide sleeve and to force the blank through a desired helical die (the helical bore of the die should be axially concentric with the bore of the guide sleeve) with a squeeze lever to After a predetermined length, stop pressing.