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我厂模具车间有一台M250A型内圆磨床,主要用于电机冲片落料模凹模内圆及凸凹模内外圆的加工。由于大部分凸凹模的内圆都小于φ150mm(该内圆磨床的磨孔直径为φ150～φ500mm),使该磨床的使用受到了
I plant a mold workshop has a M250A-type internal grinder, mainly used for motor blanking blanking die die circle and punch die within the outer circle of processing. Since most of the punch and die inner circle is less than φ150mm (the diameter of the grinder hole φ150 ~ φ500mm), so that the use of the grinder