一、前言近几年来,在国内外的机械制造厂中已普逼应用了大螺旋角立铣刀,成织十分显著。在这个基础上又出现了一种高生产率立铣刀(见图1),它的特点是:①刀齿的园周齿距不等(非均布);②齿数少,槽底园角半径大,齿高加大,因而排屑空间增大;③螺旋角加大,ω=35～45 (1.5)。 First, the foreword In recent years, at home and abroad in the machinery factory has been applied a large helix angle cutter, into a very significant organization. On this basis, a high-productivity end mill (see Fig. 1) appears again. It has the following features: ① unequal circumferential pitch of cutter teeth (non-uniform); ② small number of teeth, Large tooth height increases, thus increasing chip space; ③ helix angle increases, ω = 35 ~ 45 (1.5).