为研究工艺参数和坯料尺寸对钩尾框成形辊锻件长度、最大辊锻力矩和终锻件 填充率的影响，以 13B 型钩尾框的成形为例，基于 Matlab 中的 MBC 工具箱，建立了以坯 料长度为局部变量，以轧辊间隙、摩擦因数、坯料温度和轧辊转速为全局变量以及以辊锻 件长度、最大辊锻力矩和终锻件填充率为目标函数的数学模型，并进行有限元模拟，最后 利用 MBC 工具箱中的 CAGE 工具箱对目标函数进行优化，得到了优化组合查阅表和最佳 的锻件成形参数组合，即坯料尺寸 160 mm × 865 mm、轧辊间隙 3 mm、摩擦因数 0． 67、坯 料温度 1180 ℃、轧辊转速 15 r/min． 通过有限元模拟和实际生产验证，证明文中优化方法 是可行的，可藉此有效控制精密辊锻件的长度和终锻件的填充率．

In order to reveal the impact of both process parameters and blank size on the length of the roll forging of coupler yoke，the maximum torque of roller and the filling rate of coupler yoke forgings，a mathematical model is constructed by taking a 13B coupler yoke as the research objective and on the basis of the model-based calibration ( MBC) in the software Matlab． In this model，the length of blank is set as local variable，roller clearance，friction coefficient，blank temperature and roller speed are set as global variables，and length of roll forgings，maximum torque of roller and filling rate of coupler yoke forgings are set as the objective function． Then，finite element simulation is conducted，and objective function is optimized through the CAGE toolbox in the MBC． Thus，both optimized look-up table and optimal parameter combination of forging forming are obtained，in which the blank size is 160 mm × 865 mm with a roller clearance of 3 mm，a friction coefficient of 0. 67，a blank temperature of 1 180 ℃ and a roller speed of 15 r/min． Finally，the proposed method is proved to be feasible through the contrast of finite element simulation results and actual production． Therefore，this study offers an effective technology to control the length of precision roll forgings and the filling rate of coupler yoke forgings