2017 年 83 巻 848 号 p. 16-00362
It is well known that a regular chatter mark appears on the machined surface when chatter vibration occurs. There must be an essential information relationship between the chatter mark and the vibration stability. We therefore attempt to construct a novel method to control the chatter vibration of end milling process based on inverse analysis of chatter mark on the machined surface. As a result, it can be seen that chatter vibration occurs not at the frequency of the cutting tool, tool holder, and their coupling but near one, and that the chatter vibration frequency and the regenerative phase can be derived from the surface pattern dimensions, the spindle rotating speed, the helix angle of end mill tooth and the tool diameter. Moreover, we propose an improving method of spindle rotating speed to avoid the chatter vibration in end mill process based on the analyzed frequency and regenerative phase. The proposed method is found to be effective in suppressing chatter vibration without reducing the cutting efficiency because little change of spindle rotating speed is needed.
