【摘要】 文章以缝纫机下针机构为例，介绍了在CATIA软件中实现平面机构自顶向下的参数化设计方法，为平面机构创新设计快速建模提供了一种快捷、实用的新思路。更多还原

【Abstract】 In this article,we introduced the implement of the Top-Bottom design method in CATIA,with the sew needle mechanism design as an example,which provides a fast and practical new idea for rapid modeling of innovative design of planar mechanism.更多还原