论文部分内容阅读
一、概述: 机床运转时,机床本身不可避免地会产生振动。这种振动除影响机床本身的正常工作和寿命外还会影响被加工零件的精度和表面质量。愈是精密的机床这种影响就愈明显。当今,在机械工程制造的广阔领域中,结构振动是一个重要的问题。在锥面系列磨齿机中,滑座的运动一般都采用曲柄连杆机构。这样,在通过π/2和3π/2运动周期时曲柄的驱动力将发生突变,引起系统的“冲击”,也就是通常所说的“换向冲击”振动,由此引起的冲击响应直接影响到被磨齿轮的精度和齿面光洁度。由于滑座冲程次数的增加受到换向冲击加剧的限制,进一步影响到机床的加工效率,在一定程度上也限制了磨齿机的上水平。近年来,我们采用粘弹性阻尼结构对磨齿机的振动问题进行了探索,
First, an overview: Machine running, the machine itself will inevitably produce vibration. In addition to the vibration of the machine itself affects the normal work and life expectancy will also affect the accuracy of machined parts and surface quality. The more precise the impact of this machine is more obvious. Structural vibrations are an important issue today in the vast field of mechanical engineering. In the cone series of gear grinding machine, slide the movement are generally used crank linkages. In this way, the driving force of the crank will be abruptly changed when passing through the π / 2 and 3π / 2 motion cycles, causing “impact” of the system, also known as “commutating impact” vibrations, and the resulting impact response directly affects To the precision gear grinding and tooth surface finish. As the increase in the number of slide strokes by the impact of the commutation exacerbated by further restrictions on machine tool processing efficiency, to a certain extent, also limits the upper level of the grinding machine. In recent years, we use the viscoelastic damping structure to explore the vibration of the gear grinding machine,