1、I 摘摘 要要 机械制造技术基础课程设计是我们在学完了大学的全部基础课、 专业基 础课以及专业课后进行的。这是我们在进行毕业设计对所学的各科课程一次 深入的综合性总复习，也是一次理论联系实际的训练。因此，他在我们的大 学三年生活中占有重要的地位。 我这次设计的是拨叉 831006，首先我们要熟悉零件，题目所给的零件是 拨叉 831006。了解了拨叉的作用，接下来根据零件的性质和零件图上各端面 的粗糙度确定毛坯的尺寸和机械加工余量。然后我们再根据定位基准先确定 精基准，后确定粗基准，最后拟定拨叉的工艺路线图，制定该工件的夹紧方 案，画出夹具装配图。 就我个人而言，我希望通过这次课程设计对自己未来
2、将从事的工作进一 步适应性的训练，希望自己在设计中能锻炼自己的分析问题、解决问题、查 资料的能力 ，为以后的工作打下良好的基础。 关键词：关键词：毕业设计，拨叉，工艺 II Abstract Machinofacture technology curriculum design is that we mimic all basic courses , technology basic course and major part having completed university being in progress after the specialized course. This is
3、that we always review for the graduation practice being in progress to what be learned every thorough comprehensiveness of course,be also that a theory contacts actual training , it occupies important position therefore, in our university for three years life. My design is Bocha 831,006, First of al
4、l, we must familiar with the parts, subject to the parts is Bocha 831,006. Bocha understanding of the role, followed in accordance with the nature of parts and components in the face of the map on the roughness of rough determine the size and mechanical Jiagongyuliang. According to another location and then we set the benchmark fine first base, established after the benchmark crude, Bocha finalizing the road map process, the enactment of the workpiece clamping programme, to draw fixture assembl
