分析了滚切式双边剪和定尺剪剪切钢板时剪刃水平间隙（以下简称剪刃间隙）的合理选择问题。
This article analyzed the problem about the reasonable choice of horizontal blade gap while double_sides rotary cutting shear and rotary cutting length shear to cut steel plates.
辊切刀的曲线刃分布在空间表面上，造成加工困难。
Curved blade of roll cutting tool distributes in the curved face, resulting in the difficulties to process.
设计出六种具有相同侧切刃的等耕深、等安装角圆弧母线正切面旋耕刀，并对正切刃、正切面诸参数进行了优化和选择。
Six kinds of rotary blades with same tillage depth and same mounting Angle are designed which have the circular element scoop surfaces. The parameters of the scoop surface are discussed and optimized.
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