毕业设计-CB-B型齿轮泵前泵加工.docVIP

摘要 设计齿轮泵零件前泵盖的机械加工工艺规程及工艺装备，通过对齿轮泵前泵盖的了解，根据它的形状、尺寸精度、生产的经济效益等各方面的详细分析其加工工艺，采用多工序，数控机床加工。通过对零件的分析，此齿轮泵前泵盖要求精度高，工序适当集中，要求光滑，所以选用的工具和尺寸要量得准。最后对零件进行校核。以便达到零件精度的要求。 齿轮泵前泵盖采用灰铸铁HT200，它有容易变形，吸振性好，耐磨性及切削性好等特点。当生产批量不大时齿轮泵零件前泵盖毛坯采用木模手工造型，制作简单但毛坯精度较低，余量也较大，大批、大量生产时则采用金属模机器造型。毛坯精度高，余量可适当减少。在单件生产时，有时采用焊接件作毛坯，以缩减短生产周期。 随着科学技术的进步，各种新技术、新工艺、新材料和新设备不断涌现，机械制造工艺正向着高质量、高生产率和低成本方向发展。必须捉住机遇，把引进国内外先进技术（如数控设备）和研究创新结合起来，奋发图强，加快发展速度，为使厂生产出一批具有世界先进水平的产品，提高生产。 关键词：数控编程；加工工艺；铣削加工；齿轮泵前泵盖；装夹方案 Abstract Design gear pump parts of the pump cover before the machining process procedures and process equipment, through before the pump cover for gear pump understanding, according to its shape, size accuracy, production of economic benefits of each respect such as detailed analysis its processing technology, using more processes, CNC machine processing. Based on the analysis of the components, the gear pump pump cover requirements before high precision, processes, demanding smooth, appropriate concentration selection of tools and size so to measure whether. Final test of parts. In order to reach the accuracy requirement of the parts. Before using grey side-plate pump cover HT200, it has easy deformation of good, and vibration, wear resistance and cutting sex is good wait for a characteristic. When the production batch is not big gear pump parts by former pump cover blank block, make simple but manual modelling, allowance low precision blank is larger also, large, mass-produced using metal mould machine is modelling. Blank high precision can be reduced suitably, allowance. In single production , sometimes use as a blank, to cut short production cycle. Along with the science and technology progress, all kinds of new technology, new technology, new material and new equipment constantly emerging, mechanical manufacturing process is toward the high quality, high productivity and low cost direction. Must catch opportunity and the introduction of foreign advanced technology (such as nc equipment) and research