周期性惯性力是现代设备在工作中经常会产生的．它是引起机器振动、噪声、疲劳破坏以及生产率下降的根源之一。消除其影响的传统方法是用配重法进行平衡，但该方法不怄效果不好．而且往往会引起其它动力指标恶化，因而不能从根本上解决问题。为此，本文提出一种用弹簧平衡的方 Periodic inertial force is often produced by modern equipment at work. It is one of the root causes of machine vibration, noise, fatigue damage and productivity decline. The traditional method of eliminating its effects is to use the counterweight method to balance, but this method is ineffective. But also often leads to the deterioration of other dynamic indicators and therefore can not fundamentally solve the problem. To this end, this paper presents a spring-balanced square