大型曲面的铣削加工,通常使用的刀具是四齿螺旋球头铣刀(如图1)。刀体为高速钢,球头刀刃要求保持在同一R球面上,刃磨难度大,而且精度不易提高,球头横刃宽,加工光洁度也差。若单件小批生产,不同类型的零件型面曲率不同时,球头半径R也要作相应变化,需配备一批不同“R”的球头铣刀,显然是不经济的。为此,设计了一组曲面铣刀(见图2)来代替球头铣刀,不仅加工光洁度好,精度高,并且刀具结构简单,成本低,制作也容 Large surface milling, the tool is usually used four-helical ball end mill (Figure 1). Tool body for high-speed steel, ball head blade required to maintain the same R-sphere, grinding difficult, and the accuracy is not easy to improve, the ball horizontal edge width, machining finish is poor. If a single small batch production, different types of parts of the surface curvature is not the same, the ball radius R should be changed accordingly, the need to be equipped with a number of different “R” ball milling cutter, obviously uneconomical. To this end, the design of a set of surface milling cutter (see Figure 2) instead of ball milling cutter, not only machining finish, high precision, and the tool structure is simple, low cost, production capacity