摘要
针对传统的曲柄压力机不能满足低速高效的问题,对传统的曲柄压力机的压力不易控制、工艺适应性差、工件易产生裂纹等方面进行了归纳,提出了一种三角连杆机构压力机。推导出三角连杆式压力机的运动学方程,利用ADAMS软件建立了三角连杆机构压力机模型,采用多刚体系统动力学理论中的拉格朗日方程方法,对其进行了运动学和动力学仿真。研究结果表明,与曲柄滑块机构相比,所设计的三角连杆机构在公称压力行程内滑块的最大速度下降了42.4%,最大加速度下降了21.3%,急回特性为1.9,在公称压力行程内的各个惯性力都比较小,故很好地满足了压力机的工作要求。
Aiming at solving the problem that traditional slider-crank press could not meet the requirement of low speed and high efficiency,the characteristic of the traditional slider-crank press was analyzed that the pressure was not easy to control,the technology adaptability was poor,the workpiece was easy to create crack and so on. So the Triangle-Link press was investigated in this thesis and the kinematics equation of the Triangle-Link press was derived. The ADAMS software was used to establish a Triangle-Link mechanism press model,the method of Lagrange equation was used in multi-rigid body system dynamics theory and the kinematics and dynamics simulation was made. The results indicate that the maximum speed of the slider of Triangle-Link decreases 42. 4 percent and the maximum acceleration 21. 3 percent in comparison with those of slider-crank,quick return characteristics of Triangle-Link is 1. 9. The inertial forces of the Triangle-Link press is less on condition of super high speed,so it meets the requirements of super high press. Each inertial force is relatively small in nominal pressure stroke,so it is quite good to meet the work requirements of the press.
出处
《机电工程》
CAS
2016年第9期1080-1083,共4页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51305333)
陕西省教育厅科研计划资助项目(12JK1069)
西安思源学院科研重点资助项目(XASY-B1604)
