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通过分析伺服驱动辊锻机的工作原理和结构特点,用建模软件搭建三维模型,采用整体施加载荷、各零件单独分析的静力学分析方法,利用仿真软件模拟250 mm伺服驱动辊锻机整体模型在四道次辊锻受到最大辊锻力250 k N时、锻辊在高度方向的变形及受到的应力情况。结果显示:在锻辊四道次变形中,第2道次为最大变形道次,上下锻辊变形之和为0.60991 mm,计算出其刚度为409 k N·mm~(-1),而辊锻机的许用刚度Ch为350~500 k N·mm~(-1),符合刚度标准;在锻辊四道次应力值强度分析中,第4道次Von-Mises应力值最大,有效值达到63.267 MPa,小于辊锻机的许用应力326.8 MPa,完全满足应力值强度的要求,由结果可知,250 mm伺服驱动辊锻机锻辊的刚度强度完全满足要求。
By analyzing the working principle and structure characteristics of the servo driven roller forging machine, a three-dimensional model was built by using the modeling software. The static analysis method of the whole load and the analysis of each part was used to simulate the overall model of the 250 mm servo driven roller forging machine The deformation of the forging roll in the height direction and the stress condition under the maximum roll force of 250 k N for the four pass roll forging. The results show that in the four pass deformation of forging roll, the second pass is the maximum deformation pass, the sum of the deformation of the upper and the lower forging rollers is 0.60991 mm, and the calculated stiffness is 409 kN · mm ~ (-1) Forging machine allowable stiffness Ch is 350 ~ 500 kN · mm -1, in line with the stiffness standard; Forging four-pass stress intensity analysis, the fourth pass Von-Mises stress maximum, effective value Reached 63.267 MPa, which is less than the allowable stress of 326.8 MPa for the roll forging machine, which fully meets the requirement of the strength of the stress value. From the results, it can be seen that the stiffness strength of 250 mm servo driven roll forging machine fully meets the requirements.