一、前言在平面磨床上磨削工件时,不少工厂发生过工件弹出事故,这类事故不仅损坏机床、工件以及影响机床的精度,也可能导致砂轮碎裂,危及人身安全。本文试图通过力学分析,找出采用磁性工作台装夹工件进行平面磨削时工件弹出的力学原因,从而探求防止事故的途径,并为制订平面磨床安全操作规程提供一些理论依据。二、力学分析砂轮1磨削装夹在平面磨床磁性工作台3 I. Introduction When grinding workpieces on a surface grinder, many factories have had pop-up of workpieces. Such accidents not only damage the machine tool and the workpiece, but also affect the accuracy of the machine tool. It may also cause the wheel to be broken and endanger personal safety. This paper attempts to find out the mechanics reasons of ejecting workpieces when the work piece is clamped by the magnetic workbench through mechanics analysis, so as to explore the ways to prevent accidents and provide some theoretical basis for making the safe operation rules of the surface grinder. Second, the mechanical analysis of a grinding wheel mounted on the surface grinding machine magnetic table 3