机械制图是用图样确切表示机械的结构形状、尺寸大小、工作原理和技术要求的学科。图样是表达设计意图和制造要求以及交流经验的技术文件,常被称为工程界的语言。因此《机械制图》课程是职业类学校机制、机电专业学生重要的专业基础课之一,它为后继有关专业课的学习起着重要作用。技校学生底子薄,学习基础差,而 Mechanical drawing is a pattern with exact representation of the mechanical structure, size, working principle and technical requirements of the discipline. Drawing is a technical document that expresses design intent and manufacturing requirements as well as exchange of experience, often referred to as the engineering language. Therefore, “mechanical drawing” course is one of the important professional basic courses for vocational school mechanism and mechanical and electrical majors. It plays an important role in the subsequent professional courses. Technical school students basics, poor learning base, and