汽车后桥减速器壳工艺规程及夹具设计论文.doc

汽车后桥减速器壳工艺规程及夹具设计 摘 要 本论文研究的是减速器壳体的工艺设计及夹具设计，其中包括零件的分析，零件的工艺设计，毛坯尺寸及加工余量的确定，切削用量和加工工时的计算等内容。设计了两套夹具，并且对夹具进行分析，校核。从而确定了工艺设计及夹具设计的合理性。 关键词：；；；Abstract The automobile main gear box is the driving axle most important constituent, its function is the motor torque which transmits the rotary transmission device transmits for actuates the wheel, is in the automobile power transmission reduces the rotational speed, to increase the torque the major component. May cause in front of the main gear box the transmission part, like the gear box, the transfer case, transmission and so on rotary transmission device torques reduce, simultaneously also reduced gear boxs size and the quality, the control reduces effort keenly. The bridge shell is one on automobiles major parts, the non-separation type driving axle shell is playing the supporting automobile load capacity role, and passes to the load the wheel. Therefore, the bridge shell is not only the load bearing is also a power transmission. Simultaneously it is also the main gear box, the differential device and the actuation wheel transmission device outer covering. What present paper research is the reduction gear shells technological design and the jig design, including the components the analysis, components technological design, blank dimension and machining allowance determination, contents and so on cutting specifications and processing man-hour of computation. Has designed two sets of jigs, and carries on the analysis to the jig, examination. Thus has determined the technological design and the jig design rationality. Key word: Components analysis; Technological process design; Jig design; Examination 目 录 1 .绪论 1 1.1 减速器作用及原理 1 1.2 减速器外壳说明 1 1.3 减速器壳分类 2 1.4 设计题目 2 1.5 设计内容 2 1.6 设计原始资料 2 1.7 生产类型的确定 3 1.8 生产节拍 3 2 零件的分析 5 2.1 零件的作用 5 2.2 零件的工艺分析 5 2.2.1 表面加工方法分析 5 2.2.2 表面加工方法的确定 6 2.2.3 表面位置精度分析 8 2.2.4 确定加工形式 8 3 工艺规程的设计 10 3.1 确定毛坯材料及毛坯的制造形式 10 3.2 基准的选择 10 3.2.1 粗基准的选择 10 3.2.2 精基准的选择 12 3.3 拟订工艺路线 13 3.4 刀具的选择