The slab sizing press is the key equipment for width control of slab, and its basic structure and motion state are the basis for calculating mechanical parameters and presetting rolling parameters.At present, the researches on the basic structure and motion state of walking-stopping type slab sizing press are poor.Hence, a crank slider mechanism is simplified on the basis of the basic structure of walking-stopping type slab sizing press, and a precise kinematic model of the sliding block is established.The ideal state and the motion of the slider are simulated, and the displacement, velocity and acceleration curve of the slab sizing press at different times are obtained.The influences of crank length, length of connecting rod, idle speed and rolling speed on the motion state of the slab sizing press are analyzed.The research provides not only a precise boundary condition for the further analysis of the mechanical state but also a theoretical basis for optimization design of equipment parameters.%定宽压力机是板坯调宽的关键设备,其结构形式与运动状态是进行力学参数计算与轧制参数设定的基础,目前国内对走停式定宽压力机结构形式与运动状态的研究相对较少.为此,本文首先根据走停式定宽压力机的结构特征将其简化为曲柄滑块机构,建立了精确的滑块运动学模型;然后对理想状态与实际状态下滑块的运动情况进行了仿真,得到不同时刻定宽压力机的位移、速度和加速度曲线,分析了曲柄长度、连杆长度、空载转速、轧制转速对定宽压力机运动状态的定量影响规律.研究结果可为同类设备的力学参数计算与轧制参数设定提供精确的边界条件,也可为设备参数的优化设计提供理论依据.
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