台阶截面环形件轧制过程中导向辊运动轨迹研究
Research on the movement of the guiding roll during forming the ring with stepped cross sections in the ring rolling method
肖旻
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作者单位：宁波大学机械工程与力学学院
中文关键字：环形件轧制;导向辊;运动轨迹;有限元法
英文关键字：Ring rolling; Guiding roll; Direction of movement; Finite element method(FEM)
中文摘要：导向辊是保证环形件轧制质量的关键部件之一，合理控制导向辊的运动可以有效提高轧件质量。本文基于环形件轧制过程中体积不变原则，建立了导向辊运动轨迹方程，并借助MATLAB软件进行求解，得到了导向辊中心瞬时XY方向的位移以及其旋转角速度ω；将计算数据导入到ABAQUS中，进行外台阶截面环形件轧制成形的数值模拟。结果表明，本文采用所提出的方法可以较精确的确定导向辊运动。研究结果为保证轧件质量实时合理地控制导向辊的运动奠定了理论基础。
英文摘要：Guiding roll is one of the key components to ensure the quality of product during the ring rolling process. It can effectively improve the quality of workpiece with reasonable control of the movement of guiding roll. This paper established the motion equations of guiding roll based on the principle of volume invariably during the rolling process. The angular velocity, instant displacements in X and Y direction of guiding roll center were calculated by mathematical software MATLAB. The calculated data were imported to ABAQUS software, and the ring rolling process for ring with stepped cross sections was simulated. The results indicate that guiding roll could be controlled by the proposed method effectively. These research conclusions can provide scientific basis for reasonably controlling the movement of guiding roll instantly during the ring rolling.