CA10B转向蜗杆箱托架机械加工工艺及其夹具设计说明书说课.doc

PAGE31 / NUMPAGES31 目 录 摘要··············································1 引言···············································1 一、托架零件的分析··········································2 1、零件的作用··············································2 2、零件的结构··············································2 3、设计基准及技术关键······································3 4、主要加工表面············································4 5、 零件的工艺分析·········································5 二、托架工艺规程的设计···········································6 1、确定毛坯的制造形式······································7 2、 基准的选择·············································9 3、 制定工艺路线···········································11 4、机械加工余量、工序尺寸及毛坯尺寸的确定··················13 5、 切削用量及机床的确定···································15 三、 零件专用夹具的设计······································17 1、 设计方案的确定·········································19 2、 夹紧力的分析·············································21 3、 导向设计 ············································23 4、 精度的分析·············································25 四、毕业设计总结··············································27 五、参考目录··················································29 摘要 工艺过程是指在生产过程中，通过改变生产对象的形状、相互位置和性质等，使其成为成品或半成品的过程。 机械制造的工艺过程一般包括零件的机械加工工艺过程和机器的装配工艺过程。 机械加工工艺过程（以下简称加工过程）是指用机械加工的方法直接改变毛坯的形状、尺寸、相对位置和性质等使之成为合格零件的工艺过程。加工过程直接决定零件和机械产品的质量，对产品的成本和生产率都有较大影响，是整个工艺过程的重要组成部分。 通过对加工工艺过程的设计，我们可以更有效的利用现有的资源设备，降低生产的成本，缩短加工时间，从而实现生产的最优化。 关键词：工艺过程；机械加工工艺；装配工艺 Abstract Process is in the production process, the production target by changing the shape, location and nature of each other, making it a finished or semi-finished products of the process.  Machinery manufacturing process generally includes parts of the machining process and machinery assembly process.  Machining process (the process) is a mechanical method of processing the direct Blanks change the shape, size, location and nature of relative to become qualified parts of the process. Processing machinery and spare parts directly determi