基于动态变形的模切机牙排结构拓扑优化
Topology Optimization of Die-Cutting Machine Tooth Row Structure Based on Dynamic Deformation
王成伟 1韩炬 1叶理明 2刘贺静2
作者信息
- 1. 华北理工大学机械工程学院,唐山 063210
- 2. 玉田县盛田印刷包装机械有限公司,唐山 064100
- 折叠
摘要
1700型模切机牙排从5000s/h工况开始与前规挡板发生碰撞,针对该问题,考虑牙排运动过程中离心力作用,结合模态分析与随机振动分析研究牙排高速工况下动态特性,阐明牙排异常碰撞原因,并对牙排结构进行优化设计.基于静力学分析,明确牙排高速工况下由离心力作用产生的径向变形量.利用模态分析与随机振动分析,确定高速工况下牙排振型与振动变形量.研究结果表明,在仅考虑离心力作用或者振动因素的情况下,均不足以导致牙排与前规挡板发生碰撞;当离心力与振动两者共同作用时,会使得牙排与前规挡板发生接触.优化后牙排在6000s/h工况下,径向变形与振动变形分别减小15.81％与37.65％,共同作用产生的变形减小30.91％且小于牙排与前规挡板间隙,避免了牙排与前规挡板碰撞,使模切机无碰撞生产效率提升至6000s/h,为高速工况下牙排动态特性研究及结构优化提供理论参考.
Abstract
The tooth row of 1700-type die-cutting machine collided with the front gauge plate from 5000s/h working condition.In view of this problem,considering the centrifugal force during the movement of the tooth row,combining modal analysis and random vibration analysis to study the dynamic characteristics of the tooth row under high speed working condition,elucidating the reason for the abnormal collision of the tooth row and optimizing the design of the tooth row structure.Based on the hydrostatic analysis,the radial deformation generated by centrifugal force under the high-speed working condition of the tooth row was clarified.Modal analysis and random vibration were used to determine the vibration pattern and deformation of teeth under high speed working conditions.The results of the study showed that only considering the effect of centrifugal force or vibration is not enough to cause the collision between the tooth row and the front gauge stopper,and that the deformation of the tooth row produced by the combined effect of centrifugal force and vibration leads to the collision between the tooth row and the front gauge stopper.The optimized tooth row under 6000s/h working condition,the radial deformation and vibration deformation are reduced by 15.81％ and 37.65％ respectively,and the deformation generated by the joint action is reduced by 30.91％,which is smaller than the gap between the tooth row and the front gauge baffle plate,and avoids collision between the tooth row and the front gauge baffle plate,so as to increase the collision-free productivity of the die-cutting machine to 6000s/h.It provides a theoretical reference for the study of the tooth row's dynamic characteristics and structural optimization under high speed working condition.
关键词
模切机牙排/离心力/模态分析/随机振动分析/结构优化Key words
Die-cutting machine tooth row/Centrifugal/Modal analysis/Random vibration analysis/Structure optimization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据