作为机械加工类专业中职学生来说,《机械加工工艺》是其一门十分重要的专业主干课程。在本书的开篇,就有“车刀几何角度”的章节内容,这个内容有点复杂,教师教学很难找到合适的方法,学生学习也找不到感觉,是该专业教师和学生都想躲但又绕不过去的学习重点和难点。若这个难点解决不好,给学生后续工艺部分的学习将 As a mechanical processing professional vocational students, “mechanical processing technology” is one of its very important professional courses. At the beginning of this book, there is chapter content of the “Turning Tool Geometry Angle”, this content is a bit complicated, teachers’ teaching is hard to find a suitable method, students can not find the feeling that the professional teachers and students want Hiding but not around the focus and difficulty of learning. If this difficult solution is not good, to students follow-up part of the learning process will be