在磨削加工中,常常会出现颤振现象,使得被加工工件的表面粗糙度增大,加工精度降低,给机床带来不利影响。因此,在现有的机床水平条件下,如何从工艺角度来抑制和消除磨削颤振,是一个很重要的问题。在此,介绍一种消除磨削颤振的新的工艺方法——变速磨削。磨削颤振是以再生型为主要形式,即由前一次磨削因颤振在已加工表面下残留的波纹,引起下一次磨削过程中产生使固有振动持续下去的滞后交变磨削力。当工件速度保 In the grinding process, the phenomenon of chatter often appears, making the surface roughness of the workpiece is increased, the processing accuracy is reduced, bringing adverse effects on the machine. Therefore, under the existing machine tool level conditions, how to suppress and eliminate the chatter vibration from the perspective of the process is a very important issue. Here, a new method of eliminating chatter vibration grinding process - variable speed grinding. Chatter chatter is the main form of regeneration, that is, from the previous grinding due to chatter remaining in the processed surface under the ripple, causing the next grinding process to produce natural vibration sustained lag alternating grinding force . When the workpiece speed Paul