框式压力机的工作精度与能量转化以及机架的刚度有密切的关系,而刚度计算中的关键问题是框架的角弯矩计算。对于立梁无载荷作用的那种对称框架,我们在“框架式压力机机身刚度计算的简易方法”一文中,利用Castigliano第二定理推导出一种计算角弯矩的简易公式;与文献相比,文献 The working accuracy of frame press is closely related to energy conversion and frame stiffness. The key issue in stiffness calculation is the corner moment calculation of frame. For the symmetrical frame with no load on the vertical beam, a simple formula for calculating the angular moment is deduced by using Castigliano’s second theorem in the article “A Simple Method for Calculating the Stiffness of Frame Presses.” Compared with the literature Than, literature