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导入新课 PowerPoint PPT Presentation


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导入新课. 在现实生活中我们常常可以看到一些传动装置,比如 螺旋传动 :活扳手、千斤顶、机床的进给机构等。 蜗杆传动 、以及 变速器 等。. 活扳手. 千斤顶. 蜗杆转动轴. 起瓶塞器. 第三章 机械与传动装置. 第 2 节 能自锁的传动装置. 一、螺旋转动 二、蜗杆传动 三、变速器. 教学目标. 知识目标. 1 、了解螺旋传动的定义及结构 。 2 、了解蜗杆传动的定义及结构 。 3 、了解对变速器。. 能力目标. 1 、能够简单的介绍螺旋传动和蜗杆传动的工作原理。 2 、了解能自锁的传动装置在生活中的作用。. 情感态度与价值观.

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导入新课

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