中文摘要：

通过对新型滚切剪空间剪切机构的原理分析，建立以关键点坐标为变量的剪切机构显式三维非线性轨迹方程，并对确定导向杆与机架铰接点位置的求解理论给予修正．以某大型钢厂2800mm单轴双偏心滚切剪的研发项目为依托，对剪切机构的运动轨迹进行模拟仿真．上下剪刃重叠量、刀弧水平偏移量的计算结果表明，应用显式轨迹方程组及修正的导向杆约束理论，是提高轨迹求解精度、优化杆件尺寸、降低刀弧水平位移量、提高剪刃重叠量均匀度的重要手段．现场剪机重叠量、刀弧水平综合位移量的实际值及高质量的钢板剪切断面也证实了上述剪切机构运动学理论及导向点约束修正理论的正确性．

英文摘要：

Through analysis on principle of spatial rolling mechanism of a new type of rolling shear, its explicit 3D nonlinear path equation was established by taking coordinates of key points as variables. Then the solution theory of locations between guide rod and frame hinged point was modified. Depending on the development of a large-scale 2 800 mm rolling shear with single-shaft and double eccentricity in some large iron steel plant, the kinematics path of this mechanism is simulated. The results of calculation of overlapping between upper and lower shear blade and horizontal offset of blade arc showed that application of explicit path equation and the revised guide rod restraint theory are an important means to improve path solution accuracy, to decrease horizontal displacement of blade arc and to increase evenness degree of blade overlapping. On-site shear overlapping, horizontal comprehensive displacement of blade arc validated the correctness of the above theory and revised restraint theory.