DSZ45减速器箱体加工工艺过程优化及装备设计.doc

PAGE II 摘 要 本文是在DSZ45减速器箱体的图样分析后进行DSZ45减速器箱体的机械加工工艺路线的设计，同时按照其中的加工工序的要求设计夹具。 DSZ45减速器箱体的主要加工内容是表面和孔。其加工路线长，加工时间多，加工成本高，零件的加工精度要求也高。按照机械加工工艺要求，遵循先面后孔的原则，并将孔与平面的加工明确划分成粗加工和精加工阶段以保证加工精度。基准选择以底面作为粗基准，以底面与两个工艺孔作为精基准，确定了其加工的工艺路线和加工中所需要的各种工艺参数。 在零件的夹具设计中，主要是根据零件加工工序要求，分析应限的自由度数，进而根据零件的表面特征选定定位元件，再分析所选定位元件能否限定应限自由度。确定了定位元件后还需要选择夹紧元件，最后就是确定专用夹具的结构形式。 关键词：DSZ45减速器箱体；加工工艺；工序；专用夹具 P PAGE II PAGE PAGE III Abstract This article is in the gear unit housing pattern analysis DSZ45 be DSZ45 gearcase machining process route design, and manufacturing processes in accordance with the requirements which the design of the fixture. The main processing content DSZ45 gearcase surface and holes. Its long processing line, processing more time, high processing costs, machining precision parts is high. In accordance with the requirements of the machining process, follow the principle of first bore surface after processing and the hole and the plane clearly divided into roughing and finishing stages in order to ensure accuracy. Select to the bottom surface of the base as a crude reference to the bottom surface of the hole as a fine reference both processes, determine the route of its processing technology and the various process parameters required for processing. In fixture design parts, primarily based on parts machining process requirements, analysis should be limited to the number of degrees of freedom, and then depending on the surface characteristics of selected parts of the positioning element, and then analyze the selected positioning element can be defined limit freedom. After determining the positioning elements also need to select the clamping element, it is to determine the final form of the structure of the special fixture. Key words: DSZ45 gear unit housing; processing; step; special fixture PAGE 40 PAGE 41 目 录 TOC \o 1-3 \h \z \u 摘 要 II Abstract III 目 录 IV 1 绪论 6 1.1 本课题的研究内容和意义 6 1.2 国内外的发展概况 7 1.3 本课题应达到的要求 8 2 DSZ45减速器箱体的图样分析 9