摘要
Abstract
In teaching of Ordinary lathe, It's very important for mechanism major students to make angular therad in a secondary vocational school. It is one of the important assessment criteria to judge whether the students acchieve the junior technical level or not. And it's also a stage of the following study. However, in the real teaching practic-ing, the problem of the thread tooth deformation is a difficult problem for a long time. The author analyzed the prob-lem in the this text, and made practical research on how to overcome the problems, it can make certain reference in teaching turning triangular external thread.关键词
三角形外螺纹/牙型变形/教学/探究Key words
triangle external thread/tooth deformation/teaching/explore分类
社会科学
