减速器箱体加工工艺和夹具设计.pdf

摘 要 本毕设是根据减速器箱体底座零件的加工技术要求，制定该零件的机械加工工艺路线 以及一些重要工序所需的夹具的设计。在机械加工工艺规程设计中，首先要进行零件分析 ，确定毛坯的铸造方式和设计毛坯的原始尺寸，确定各个加工面的加工工序，选择合适的 粗精加工基准，制定零件最终的加工工艺路线。在专用夹具设计中，此次采用镗床专用夹 具和钻床专用夹具两套方案，主要考虑夹具体，定位元件，夹紧元件等几个方面。由于夹 具作为机床的一部分，作为机械加工中不可缺少的工艺设备，采用合理的夹具装夹工件可 以保证加工精度，提高劳动生产率，保证加工质量，和降低加工成本，扩大机床工艺范围 等作用，使得操作方便安全。 关键词：减速器箱体底座，镗夹具，钻夹具，工艺分析，工艺路线，加工精度 ABSTRACT According to the processing technical requirements of reducer box base parts, the mechanical processing process route of the part and the design of fixtures required for some important processe s are formulated.In the design of machining process, firstly, the part analysis shall be carried out to determine the casting mode and the original size of the blank, determine the processing procedure of each machining surface, select the appropriate rough finishing benchmark and formulate the fina l machining process route of the part.In the design of special fixture, two sets of special jig for bori ng machine and special fixture for drilling machine are adopted this time.As the fixture is part of th e machine tool, as an indispensable process equipment in machining,The use of reasonable fixture clamping workpiece can ensure the machining precision, improve labor productivity, ensure the pr ocessing quality, reduce the processing cost, expand the scope of the machine tool process, make t he operation convenient and safe. Key words: Reducer case base ，boring fixture ，drilling fixture ，Process Analysis ，Process Route ，working accuracy 目录 1绪论 1 1.1国内外研究现状及发展趋势1 1.2选题背景及其意义2 2零件分析 3 2.1箱体工艺性的分析 3 2.1.1箱体结构功用分析 3 2.1.2研究箱体零件的图纸 3 2.1.3主要技术的条件 4 2.2 确定毛坯的结构 4 2.2.1确定箱体毛坯的余量 4 3箱体的加工工艺设计5 3.1 选取加工基面 5 3.2精基准选择的原则 6 3.3工艺过程当中应该研究的主要的问题 6