水泵涡壳加工工艺夹具设计摘要本课题来源于东风汽车泵业有限公司实际生产需求，主要论述了水泵涡壳的加工工艺及基准B面的加工夹具设计。水泵涡壳的尺寸精度、形状精度及位置精度的要求都比较高。而由于材料的选择,其刚性较差，容易产生形变。因此安排工艺过程时，就要把各主要面的粗精加工工序分开。逐步减少加工余量，以减少切削力、内应力的作用，提高加工精度，缩短生产节拍，满足大批量生产的需要。关键字：水泵涡壳加工工艺夹具设计AbstractThesubjectcomesfromtheactualproductionneedsofDongfengAutomobilePumpCo,mainlydiscussesthepumpvoluteprocessandbasisBsurfacemachiningfixturedesign.Therequirementsofdimensionalaccuracy,shapeaccuracyandpositionalaccuracyforthepumpvoluteishigh.Duetothechoiceofmaterial,lessrigid,easilydeformed.Itisimperativetoseparateroughandfinishsurfacewhendesignprocess.Graduallyreducetheallowancetoreducetheroleofthecuttingforce,internalstress,improveprocessingaccuracy,shortentheproductioncycletomeettheneedsofmassproduction.Keyword:pumpvoluteprocessingfixturedesign目录一、绪论..................................................................11.1课题来源、目的、意义...................................................11.1.1课题的来源...........................................................11.1.2本课题研究目的.......................................................11.1.3本课题研究的意义.....................................................11.2国内外概况、预测和文献综述............................................1.2.1课题的国内外研究概况.................................................21.2.2课题的研究趋势预测...................................................3二、水泵涡壳的工艺性分析..................................................52.1水泵涡壳的材料选择....................................................52.1.1稳定的显微组织.......................................................52.1.2良好的工艺性能.......................................................52.2毛坯及制造方法........................................................52.3确定毛坯尺寸和公差....................................................62.4零件的工艺设计........................................................62.4.1基准的选择...........................................................62.4.2零件加工方法的选择...................................................62.5确定生产类型和节拍....................................................72.6工艺路线的拟定........................................................72.7可行性分析............................................................82.8工序间加工余量........................................................92.9选择加工设备和工艺装备...............................................102.9.1选择机床............................................................112.9.2选择夹具............................................................112.10切削用量及工时定额..................................................112.10.1切削用量的一般性选择原则...........................................112.10.2粗加工时切削用量的选择原则.........................................112.10.3精加工时切削用量的选择原则.........................................132.10.4确定每步工序的切削用量和工时定额...................................13三、铣削B基准面的夹具设计................................................273.1问题的指出..........................................................273.2六点定位原理........................................
