自动升降黑板螺旋副机构设计与加工的研究

Research on Design and Manufacture of Automatic Rise/Drop Blackboard and Spiral Assistant Structure

介绍了自动升降黑板的升降传动原理，螺旋副机构的作用，通过选用MC含油铸造尼龙作为螺母材料，对提高螺母的耐摩性和螺旋副机构寿命的影响。并着重研究满足使用要求的长丝杆和螺母机构的设计和加工。

This article is to introduce the automatic rise and drop transmission theory of blackboard and the function of spiral assistant structure. MC oiled Nylon is chose as the raw material, which will highly improve the wearability of Nut and of life of the Spiral Assistant Structure. We are also emphasizing on the design and manufacture of Haulm and the spiral assistant structure.