Abstract: Zero geometrical tolerance were discussed with instances. Some problems difficult to understand of application zero geometrical under distinct circumstances were analysed and compared. In order to be used flexibly and rationally in automobile spares precision design.

Key words: zero geometrical tolerance, maximum (least) material requirement, reversible requirement

摘要： 结合实例对零形位公差进行了较为详细的论述,并针对零形位公差在不同情况下应用所产生的一些难以理解的问题进行了分析与比较,以求在汽车零部件精度设计中更加灵活、更加合理地运用.

关键词: 零形位公差, 最大(小)实体要求, 可逆要求