悬链线形拉深模口的设计与应用

Design and Application of Catenary Die Orifice of Drawing Die

为改进拉深工艺,减小拉深力,增大材料的变形程度,在拉深凹模模口的设计中引入最小面积过渡的概念,并从理论上推算出使模口回转面面积最小的函数曲线是悬链线,实际使用时可采用合适的圆弧来拟合该曲线。

In order to improve drawing technology,decrease drawing force and increase deforma-tion of the material,the concept of minimum area transition is introduced. It is inferred theoreticallythat the functional curve which makes the least revolve surface area is catenary. The curve can be fitby proper arc in practice.