【摘要】 实现木窗的高质量加工，需要研究双端复合精铣加工机床主轴系统的动力学特性，可为其结构优化、减轻振动提供理论依据，使用软件Adams建立主轴系统的简化三维模型，计算铣床加工木窗时的切削力和主轴系统支承轴承刚度，并联合软件Ansys与Adams建立柔性主轴的刚柔耦合模型，对主轴系统进行刚性体模型和刚柔耦合模型的仿真，提取主轴质心、切削力作用点和带轮连接点处的X向、Y向、Z向的振动曲线。仿真结果表明，切削力作用点的X向和Z向振幅最大，且当主轴为柔性体时质心和切削力作用点的振幅要远远小于主轴为刚性时的情况。此研究结果表明，将主轴设为柔性体时的动力学特性更符合实际工作情况，3点的振动曲线为主轴系统的结构优化提供一定的理论依据。更多还原

【Abstract】 To realize the high-quality processing of wooden windows, it is necessary to study the dynamic characteristics of the spindle system of the double-ended composite finishing milling machine tool, which can provide a theoretical basis for its structure optimization and vibration reduction. A simplified three-dimensional model of the spindle system was established using the software Adams, and the cutting force and the stiffness of the spindle system supporting bearings were calculated when the milling machine processed wooden windows, and combined the software Ansys and Adams to establish a rigid-flexible coupling model of the flexible spindle, and simulated the rigid body model and the rigid-flexible coupling model of the spindle system. The X, Y, and Z vibration curves at the centroid of the spindle, cutting force action point and the pulley connection point were extracted. The simulation results showed that the X and Z direction amplitudes of the cutting force action point were the largest, and the amplitude of the centroid and the cutting force action point when the spindle was a flexible body was much smaller than when the spindle was rigid. The results of this study showed that the dynamic characteristics of the spindle as a flexible body are more in line with the actual working conditions, and the vibration curve of the three points provides a certain theoretical basis for the structural optimization of the spindle system.更多还原