为了改进二辊棒材矫直机矫直质量,从弹塑性弯曲理论出发,用Matlab求解双曲线和三曲率二辊矫直机辊型曲线,并绘制相应的辊型图。分别计算了双曲线和三曲率辊型曲线的矫直精度,结果表明三曲率辊型曲线矫直精度高于双曲线辊型曲线的矫直精度。综合考虑棒材的弹塑性变形,基于有限元MARC平台,根据具体实例建立了棒材二辊矫直弹塑性模型,并对其矫直过程进行模拟,分析了棒材在矫直过程中各种参量的变化。对比分析不同辊型下棒材矫直效果,三曲率辊型矫直效果要好于双曲线辊型,可为实际生产提供理论指导。
In order to improve the straightening quality,the curve shape and straightening precision of double curve shape and three curvature shape was calculated by Matlab and roll shape was drawn according to the theory of elastic and elastic-plastic of bar.Considering the deformation of elastic plastic bar,the elastic plastic model of the specific two-roller straightener was built by means of finite element analysis software MARC.The working process of the two-roller straightening was simulated and the changing parameters were analyzed during the process of straightening.Through contrasting the straightening results,it was concluded that the straightening precision of curvature shape is better than that of double curvature shape.
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