基于“十字双滑块模型”的矩形化补偿机构设计

Design of Rectangular Compensation Mechanism based on the Cross Double-slider Model

针对连铸结晶器受料区域为矩形,而普通双摆杆式自动加渣机布料区域为扇形,存在布料盲区的缺陷,提出"十字双滑块模型",建立该模型的数学模型,计算出矩形化补偿凸轮轮廓曲线方程,分析了基于"十字双滑块模型"设计的自动加渣机存在"死点"的原因;在此基础上,提出凸轮连杆组合式矩形化补偿技术,建立凸轮连杆组合机构的虚拟样机,对虚拟样机进行了运动学分析,得出加渣机输料管上出料口中心的速度曲线,为提高保护渣在结晶器宽度方向的均匀性提供了依据,并对虚拟样机进行了机构动力学分析,得出机构的最小传动角,验证了虚拟样机设计参数的可行性。

The cross double-slider model is put forward to solve the defect of that continuous casting mold material area is rectangular,while the ordinary double pendulum rod type automatic mold flux feeder machine material area is sector,there is a blind zone of feeding. And the mathematical model of the cross double-slider model is established,the equation of cam contour curve is calculated,the reason of the dead center that the design based on the cross double-slider model is analyzed. On the basis of the above,the rectangular compensation technology of cam linkage combined mechanism is put forward,the virtual prototype of cam linkage combined mechanism is established,and the kinematics analysis of the virtual prototype is carried out. The speed curve of the center of outlet port of the feed tube is obtained,which provides the basis for improving the uniformity of the protection slag in the crystal. And the virtual prototype is analyzed,and the minimum transmission angle of mechanism is obtained,the feasibility of the design parameters of the virtual prototype is verified.