【正文】 determine the amount of time cutting fixed. Tooling area is based mainly on the degree of processing technology, economic, and convenient to use the situation to determine the type of fixture, select the positioning ponents, and other aspects of design and calculation errors. Associated with the design size of icons, such as parts diagram. Although the design process, toolsbased， but also made the design of pump detail, The design in the design of the content of the issues involved in a more detailed explanation. Keywords impeller， shaft， volute， processing technology， a dedicated fixture， positioning， clamping， error. 目 錄 摘 要 .........................................................................................................................................I ABSTRACT.............................................................................................................................. II 第 1章 緒論 ............................................................................................................................ 1 第 2章 發(fā)動機水泵的設(shè)計 .................................................................................................... 3 泵的主要參數(shù)和結(jié)構(gòu)方案的確定 .......................................................................................... 3 提供設(shè)計的數(shù)據(jù)和要求 .................................................................................................. 3 確定泵的總體結(jié)構(gòu)形式和泵的進出口直徑 ...................................................................... 3 計算比轉(zhuǎn)速 sn ,確定級數(shù) .............................................................................................. 3 估算水泵的效率 ............................................................................................................ 4 泵軸頸和葉輪輪轂直徑的確定 .............................................................................................. 4 葉輪主要尺寸的確定 ............................................................................................................ 5 葉輪的初步確定 ............................................................................................................. 5 精算葉輪的外徑及出口寬度 ........................................................................................... 5 葉片數(shù)的選擇 ................................................................................................................ 6 葉片厚度和角度的選擇 .................................................................................................. 6 葉片進口安放 角的選擇 .................................................................................................. 6 葉片出口安放角的選擇 .................................................................................................. 6 葉片包角的選擇 ............................................................................................................. 6 葉片的繪制（具體形狀尺寸如零件圖所示） ................................................................... 7 泵體的設(shè)計 .......................................................................................................................... 7 蝸室的主要結(jié)構(gòu)參數(shù) ...................................................................................................... 7 蝸室繪制 ....................................................................................................................... 8 其他水泵零件的選擇 ...................................................................................................... 9 零件的強度校核 ................................................................................................................... 9 葉片的強度校核 ............................................................................................................. 9 輪轂強度 校核 .............................................................................................................. 10 泵體的強度校核 ........................................................................................................... 10 其他強度校核（略） .................................................................................................... 10 第 3章水泵泵體的工藝規(guī)程設(shè)計 ...........................................................................................11 分析零件圖 .........................................................................................................................11 零件的作用 ...................................................................................................................11 零件的工藝分析 ............................................................................................................11 確定生產(chǎn)類型 ......................................................................................................................11 確定毛坯 ............................................................................................................................ 12 確定毛坯的種類 ........................................................................................................... 12 確定鑄件余量 .............................................................................................................. 12 畫鑄件零件綜合圖 ....................................................................................................... 13 機械加工工藝過程設(shè)計 ...................................................................................................... 13 選擇定位基準 .............................................................................................................. 13 擬定工藝過程 .............................................................................................................. 14 確定工序尺寸，加工余量 ............................................................................................. 16 選擇加工設(shè)備與工藝裝備及確定切削用量時間定額 ...................................................... 17 第 4章 水泵泵體孔 740H? 的夾具設(shè)計 ......................................................