基于机构运动平稳的可靠性研究与结构优化设计

Reliability Study and Structure Optimization Design Based on the Movement Stability of Mechanism

在产品设计中,往复机构的运动平稳性和可靠性直接影响机构的运动、动力性能和产品质量。文中从动力学和运动学的角度,对应用广泛的曲柄滑块机构开展基于运动平稳性的可靠性研究。通过建立曲柄滑块机构的等效力学模型,采用调整质心平衡法来减小振源,并利用MATLAB软件编程计算和仿真,以获取执行机构运动平稳规律;然后再综合考虑机构的尺寸误差和运动副间隙误差对机构运动可靠性的影响,并由此根据机械产品的实际情况确定并优化相关的运动参数,从而得到该机构最佳的运动平稳的可靠性结构。

In the design of product, the movement stability and reliability of reciprocator directly affect the movement, dynamic performance and product quality. In the chapter, based on the kinetics and kinematics, the reliability based on movement stability research was developed on the broadly applied crankslider mechanism. To get the movement stability rule of the executive mechanism by establishing the equal dynamic model, using the balancing method of adjusting the centroid to reduce the epicenter, and utilizing the software of Matlab to programming, calculating and simulating. Then considering the influences of dimension error of mechanism and clearance error of kinematics pair on the kinematics reliability of mechanism sufficiently, and selecting appropriate parameters of movement according to the actual situation of the mechanical structure, the best movement stability and reliability mechanism can be achieved.