铸件能车动，磨床磨不动的原因：由于铸件在加工切削时排屑物呈粉末状，一般磨床磨削时都不采用冷却液，防止铸件的粉状排屑嵌入砂轮，从而造成砂轮的切削颗粒不能正常磨削。

其次在选用砂轮型号时是否正确，通常磨床磨铸件一般采用代号TH黑碳化硅砂轮，适合磨削铸件及非金属材料。

对于铸件的特殊性操作者必须勤修砂轮，以保证砂轮正常磨削铸件。

立轴圆台平面磨床加工时应该检测一下振动，如果振动过大还会影响加工精度，主轴损伤严重。

振动大就会产生噪声，这款磨床振动主轴跳动控制在1um以内。这种磨床我们在新换砂轮时用台湾PY2700G动平衡仪，在线上调下动平衡。振动值在006-0.5um，后休整砂轮加工。

The reason why the casting can turn and the grinder cannot grind: because the chip removal of the casting is powder during machining and cutting, the coolant is not used during grinding of the general grinder to prevent the powder chip removal of the casting from embedding into the grinding wheel, resulting in the failure of normal grinding of the cutting particles of the grinding wheel.

Secondly, whether the model of grinding wheel is correct or not. Generally, th black silicon carbide grinding wheel is used for grinding castings by grinder, which is suitable for grinding castings and non-metallic materials.

For the particularity of castings, the operator must repair the grinding wheel frequently to ensure that the grinding wheel can grind the castings normally.

The vibration should be detected when machining the vertical shaft circular table surface grinder. If the vibration is too large, the machining accuracy will be affected and the main shaft will be seriously damaged.

Large vibration will produce noise. The vibration spindle runout of this grinder is controlled within 1um. We use Taiwan py2700g dynamic balance instrument to adjust the dynamic balance online when we change the grinding wheel of this grinder. The vibration value is 006-0.5um, and then rest the grinding wheel for processing.