高速输送链传动设计、仿真与试验

Simulation and Experiment of High Speed Transmission Chain

普通链条输送机构常应用于平稳、低速的自动化生产线上。由于链条的柔性特点,也常用于高速冲击等复杂工况下的输送机构。为了减小多边形效应,提高动力学特性,提出一种新型高速输送链,并对结构进行设计、对运动进行仿真分析;利用ADAMS软件建立新型高速输送链的多体系统动力学仿真模型;进行仿真分析与试验研究,试验表明:仿真数据与试验结果基本相符,仿真模型能较真实地模拟高速输送链的运动;对高速输送链的两个重要参数托板质心和质量进行参数化仿真研究,结果表明:为便于工件与下环节的交接,设计时应尽量考虑托板(含工件)的质心靠近链板质心,以减小速度波动和受力;托板质量对输送链的运动影响较大,也影响铰接点的受力,从而影响运动平稳性。

Ordinary chain delivery mechanism is usually used in smooth automated production line with slow kinematic velocity. And due to the flexibility of the chain, it is also applied in complex conditions with high speed and impact. In order to reduce the polygon effect of chain, a kind of high speed new transmission chain is proposed, of which key part is designed and analyzed. Multi-body system dynamic model is established based on ADAMS software. Simulation and test processes are done. The processes show that test result agrees with the simulation one, and simulation model can describe the real high speed transmission chain motion. Two important parameters of high speed transmission chain （layer centroid and mass） are researched in the parametric simulation mode. The result reveals that in order to connect the workpiece and next link easily, the layer＇s centroid height lower than or equal chain＇s centroid height should be considered to diminish the velocity fluctuation; and layer＇s mass is directly affecting the pressure of articulation point due to the polygon effect, which will influence movement stability.