随着社会的发展和科技的进步,各种新产品不断涌现,产品占有市场的周期大大缩短了.产品在改进、更新、扩展系列的设计过程中,常常大量采用通用件和借用件.JB/Z 222—84《通、借用件管理办法》中指出,产品设计时继承已有的零部件,扩大产品的通用化系数,可显著提高设计工作效率,缩短新产品设计、试制、生产周期、 With the development of society and the advancement of science and technology, various new products have emerged continuously, and the cycle of products occupying the market has been greatly shortened. In the course of designing the series of improvements, updates, and extensions, the products often use a large number of common parts and borrowed parts. JB/ Z 222-84 “Administrative Measures for Access and Borrowing Parts” pointed out that product design inherits existing parts and components and expands the generalization coefficient of products, which can significantly increase design work efficiency, shorten new product design, trial production, and production cycle.