气压液体式磨床在线自动平衡装置结构设计与性能研究  

Structural design and performance analysis of a liquid-transfer active balancing device with pneumatic means for grinding machines

作　　者：潘鑫[1] 吴海琦[1] 高金吉[1] 

机构地区：[1]北京化工大学诊断与自愈工程研究中心,北京100029

出　　处：《振动与冲击》2014年第23期20-23,共4页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划("973"计划)项目(2012CB026000);国家自然科学基金重点项目(51135001)

摘　　要：砂轮不平衡是磨床振动的主要原因。为了在线调整砂轮的平衡状态,提高磨床的磨削精度,介绍一种新型的气压液体式在线自动平衡系统。该平衡系统利用压缩空气驱动平衡液在位置相对的储液腔间进行质量转移,改变平衡盘中的液体分布,进而实现砂轮平衡状态的在线调整。通过对装置平衡性能的分析,认为该类装置具有平衡速度快、平衡能力线性度好的优点。最后经过实验验证,该装置在5 500 r/min的转速下,将系统不平衡振动从10.2μm降至0.37μm,振幅下降比例达95%以上。Vibrations of grinding machines are primarily caused by the unbalance in a grinding wheel. A new type of liquid-transfer active balancing device was proposed to adjust the balancing state of the grinding wheel and increase grinding accuracy. In the balancing system,compressed air was used for driving balancing liquid to transfer mass between two opposite chambers. The distribution of liquid in the balancing disk was changed and the grinding wheel was balanced.Balancing performance of the device was analysed. The test results demonstrated that the unbalance response was reduced from 10. 2μm to 0. 37μm at the speed of 5500 r / min and the decrease in amplitude was more than 95%.

关 键 词：砂轮 磨床 自动平衡 气压液体式 

分 类 号：TB123[理学—工程力学] TB535[理学—力学]