工业平缝机振源诊断及机构动平衡分析  

作　　者：陈晓宇 刘倩 

机构地区：[1]西安标准工业股份有限公司,陕西西安710612

出　　处：《中外缝制设备》2022年第9期62-65,共4页SINO-FOREIGN SEWING MACHINERY

摘　　要：工业平缝机在缝制设备领域应用广泛,整机的振动影响着缝纫性能的稳定性。对标国际龙头企业产品,国内生产的平缝机在高速运转下的稳定性略逊一筹,尤其是在4500~50001/min时,会有振动加剧、噪声增大等问题出现。为了提升机器性能,助力产品进入高端领军行列。本文在平缝机的振源查找和机构动平衡方面做了研究和分析。首先,通过实验的方法,对高速状态下造成缝纫机振动大的机构原因进行查找、诊断,确定针杆机构和挑线机构的不平衡回转为主要振源;其次,通过回转体的刚体动力学分析,分析了机构动平衡设计依据及优化方法。Industrial lockstitch sewing machine is widely used in the field of sewing equipment,machine vibration affects the stability ofsewingperformance.Comparedwiththe products of international leading enterprises,the stability of lockstitch sewing machine is slightly inferior under high speed operation,especially at 4500-5000 rpm,the vibration and noise increase.This paper studies and analyzes the vibration source and mechanism dynamic balance of the lockstitch sewing machine.Firstly,findand diagnose the mechanism reason that causes the increasing vibration of lockstitch sewing machine at high speed.The unbalanced rotation of the needle bar mechanism and the thread take-up mechanism is determined as the main vibration source.Secondly,through the rigid body dynamics analysis of the rotating body,the design basis and optimization method of the mechanism's dynamic balance are analyzed.

关 键 词：平缝机 振源诊断 机构动平衡分析 

分 类 号：F42[经济管理—产业经济]