我厂生产的三爪自动定心卡盘,其中主要零件-盘体的工字槽精度要求很高。过去是用高速钢铣刀加工。由于刀具成本高、效率低,影响生产任务的完成。现在采用人字形硬质合金工字槽粗、精铣刀,经三年来生产实践证明:刀具寿命比高速钢铣刀长,生产效率一般提高三倍左右。硬质合金工字槽铣刀几何形状见下图。粗铣刀每边有三个刀齿上开有分屑槽,精铣刀上没有开分屑槽。两种铣刀都是“人字形错齿”结构。 I plant the production of three-jaw self-centering chuck, the main parts - the body of the I-groove accuracy is very high. In the past is the use of high-speed steel milling cutter. Due to high tool costs, low efficiency, the completion of the production tasks. Now using herringbone carbide groove rough, fine milling cutter, after three years of production proved that: tool life than high-speed steel milling cutter, production efficiency is generally increased about three times. Carbide I-groove cutter geometry shown below. Rough cutters on each side of three teeth open a chip breaker, fine cutter no open chip breaker. Both milling cutters are “herringbone” tooth structure.