摘要
作者对砂型定位装置中公差与配合问题进行了认真研究,为满足国家标准GB6414—86的要求,将目前工厂中习惯使用的经验数据,按国家标准GB1800～1801—79的规定进行了标准化。
The author has made a conscientious study on the problems of tolerance and fit in the sand mold positioning device. The empirical data usually used in the factories at present have been standardised to be consistent with the State Standard GB1800～1801—79.
