基于力封闭的多功能螺母拧紧机系统设计

System Design of Multi-function Nut-fastening Machine Based on Closed Force

通过对轴向预紧力与螺母转角、拧紧扭矩、联接件的几何参数及螺纹件的摩擦因素间的关系分析 ,为多家企业委托的汽车后桥及变速箱装配线上开发了基于力封闭的多功能螺母拧紧机。扭矩传感器实时检测扭矩 ,拧紧扭矩实时显示 ,可根据设定的门槛扭矩对加、卸载过程进行高、低速自动切换 ,最终拧紧扭矩可在 80 0N·m范围内任意设定 ,扭矩控制平稳精确 。

By analyzing the relationship between the axial pre tightening force and the screw in angle, torque, geometric parameter and friction factor of the connector, a multi function nut fastening machine based on closed force is designed, which is developed to work in rear axle and gearbox assembly line for several enterprises. The torque is displayed in real time by detecting torque sensor, both load and unload processes can be switched into fast or slow speed automatically by setting threshold torque, and have a good accuracy of torque control and efficiency within 800 N·m in whole process.