断纸面刀辊的加工方法分析与优化

针对机械加工中断纸面刀辊类零件在加工过程中容易产生变形的问题,对其进行了自身重力、切削力及切削热影响变形的分析,提出了一种变形明显较小的断纸面刀辊的加工方法.该方法基于断纸面刀辊工件的装夹、进给方式及支撑方式的确定来实现.主要是将断纸面刀辊左右两端用卡盘装夹,进给方式选用由左端至右端的反向车削方式,同时在左右两端之间添加可移动辅助支撑,辅助支撑可随加工过程的需要而移动.通过ABAQUS分析不同跨距和不同刚度下的变形情况,仿真比较了两辅助支撑与单辅助支撑下的位移变形,验证了单辅助支撑的断纸面刀辊加工方法可达到两辅助支撑的效果,且节省材料,降低成本.

Analysis and optimization of machining method of paper-cutting roller with face-cutter

Aimed at the problem that the parts of category of paper-cutting roller with face cutter are easy to be deformed during their machining process, the effects of self-gravity, cutting forces and cutting heat on the deformation are analyzed. A method for machining this type of roller with obviously smaller deformation is proposed. This method is realized on the basis of determination of the clamping, feeding and supporting modes of the workpiece of the roller. The key of this method is as follows: both left and right ends of the roller are clamped with chucks, the feeding mode is so selected that the turning is reversed and left to right, and meantime, a movable auxiliary support is set additionally between the left and right side of the machine tool, which can be moved according to the need of the machining process. Based on the ABAQUS, the deformation of the roller at different span wise position and with different stiffness is analyzed, the displacement deformation under the condition of double-auxiliary support and single-auxiliary support is compared simulatively. It is verified that the machining method of the roller with single-auxiliary support can achieve the result with double-auxiliary support, the material will be saved and the cost reduced.