【摘要】 装配是机械制造过程中的一个重要环节,在装配过程中,经常会遇到欠约束问题。在复杂装配环境下,某个装配零件的欠约束会对其他零件的装配产生意想不到的结果。装配时,约束条件和零件自由度之间存在一种内在联系,通过建立基体和目标零件的自由度空间坐标系,对约束条件和自由度关系分析,得到约束条件和自由度关系的逻辑值,通过逻辑值判断剩余自由度的个数和类型,从而为快速解决欠约束问题提供了一种途径。更多还原

【Abstract】 Assembly is an important part in the process of mechanical manufacturing. Under-constraint often exists in the assembly process. If a part is in an under-constraint situation during a large and complex assembly process, it will bring an unexpected result to the related parts which take the surface of the part as constraint reference. To solve the under-constraint problem, the relationship between degrees of freedom(DOF) and constraints is established by building space coordinate system. Logical values can be obtained from the tables. The numbers and types of DOF are determined by logical values, and it provides a quick method to solve the under-constraint problem.更多还原