精梳机钳板机构的振动分析

Simulation and vibration of combing nipper mechanism

针对精梳机高速运转时钳板机构产生的振动与噪声,讨论了往复弹簧合力、钳口冲击力和振动力,其中振动力等于机构总惯性力。利用机械系统动力学自动分析(ADAMS)软件分析了精梳机在400钳次/min时,钳板机构在1个运动周期内总惯性力的分布规律,结果表明:1台精梳机8组钳板机构产生的总惯性力幅值为1 434.72 N,8个下钳板座的惯性力幅值达到872.32 N。同时研究了精梳机的曲柄半径、钳板组件质量和工作速度与钳板机构的振动关系,结果表明:曲柄半径变大,钳板组件质量增加;工作速度提高,钳板机构的振动力变大。

The high speed comber results in vibration and noise from nipper mechanism. The reciprocating spring force, jaw impact force and shaking force were discussed. And the shaking force is equal to the total inertia force. Taking advantage of ADAMS＇s dynamics simulation analysis of combing machine, the total inertia force distribution of nipper mechanism in a motion cycle with the speed of 400 nips/min is analyzed. It turned out that the total inertia force＇s amplitude from eight groups of combing nipper mechanism is 1 434.72 N. The inertia force＇s amplitude from nipper base plate is 872.32 N. By analyzing the relation between the comber crank radius, nipper component quality, speed of work and the shock of nipper mechanism, it turned out that with the increase of crank radius, nipper component quality and speed of work, the shaking force of nipper mechanism increases.