【摘要】 从弹塑性力学基本理论出发分析了压力校直过程工件弯曲的力学特性,建立了挠度与曲率、载荷之间的关系式.在此基础上,提出通过建立高精度的初始挠度(δ0)与校直行程(δ∑)对应数值插值表的方法解决自动精密校直机校直行程的确定,进而编制了常见截面工件校直行程计算MATLAB程序.通过实例计算与有限元分析及校直实验结果的比较,验证了本文提出的方法及程序具有较高的求解精度,能满足自动精密校直工艺的要求.更多还原

【Abstract】 The flexural mechanical feature of metal workpiece during the straightening process are analysed and a relation among deflection,load and curvature is established by the application of the elastic-plastic mechanics.Based on that,a method of establishing a high precise interpolation table between the initial deflection(δ0) and straightening stroke(δ∑) is put forward for the determine of the straightening stroke of a automatic precise straightener,and a MATLAB program for the straighten-ing stroke’s calculating of common section workpieces is designed By compairing the results of the MATLAB program with those of the FEA and with those of the st`igthening experiments of some examples,it is validated that the precise of this method is high and so the method proposed in this paper can meet the demands of the automatic precise pressure straightening technology.更多还原