【正文】 出了更高的要求。然而夾具又是制造系統(tǒng)的重要組成部分，不論是傳統(tǒng)制造，還是現(xiàn)代制造系統(tǒng)，夾具都是十分重要的。機(jī)械的加工工藝規(guī)程及夾具設(shè)計(jì)是在完成了大學(xué)的本專業(yè)全部課程之后，進(jìn)行的一次理論聯(lián)系實(shí)際的綜合運(yùn)用，使我對專業(yè)知識、技能有了進(jìn)一步的提高，為以后從事專業(yè)技術(shù)的工作打下基礎(chǔ)。本設(shè)計(jì)是 490 型柴油機(jī)的水泵，用于對柴油機(jī)工作時的水冷卻系統(tǒng)，水泵的效率、耗能、水泵各部件等方面的設(shè)計(jì)有利于提高柴油機(jī)水泵的工作效率，減少能源的消耗，對柴油機(jī)的整體冷卻系統(tǒng)更加完善。建設(shè)部提出，未來三年我國縣城及鄉(xiāng)鎮(zhèn)環(huán)境基礎(chǔ)設(shè)施建設(shè)將有一個大的發(fā)展，全國 2 萬個建制鎮(zhèn)污水處理總投資額將高達(dá) 1 萬億。 ...........................................................................................43 確定定位元件尺寸及配合公差,分析計(jì)算定位誤差 ..................................................................44 確定工件的夾緊元件及夾緊裝置 ...............................................................................................45 引導(dǎo)元件和引導(dǎo)裝置 ...................................................................................................................45 確定其他裝置 ...............................................................................................................................46 繪制夾具體結(jié)構(gòu)草圖（略） ..............................................................................................................46 夾具使用說明 ......................................................................................................................................46 夾具精度分析 ......................................................................................................................................47 繪制夾具總裝配圖，零件圖 ..............................................................................................................47第 5 章 結(jié)論 ...........................................................................................................................48參 考 文 獻(xiàn) .............................................................................................................................49致 謝 .....................................................................................................................................50附錄 A .......................................................................................................................................51 第 1 章 緒論水泵是應(yīng)用廣泛的通用機(jī)械，而且隨科學(xué)技術(shù)的發(fā)展，其應(yīng)用范圍正在迅速擴(kuò)大。并附有相關(guān)的設(shè)計(jì)尺寸圖示，零件圖等。水泵泵體的工藝規(guī)程設(shè)計(jì)由加工工藝原則可知，對所加工工藝的部件的零件圖的加工等級，經(jīng)濟(jì)精度、來確定加工方法，如端面的車，孔的鉆、鏜等加工方法及加工工序的確定，選擇加工設(shè)備與工藝裝備及確定切削用量時間定額。 發(fā)動機(jī)水泵的設(shè)計(jì)及工藝工裝設(shè)計(jì)摘 要本次設(shè)計(jì)是對發(fā)動機(jī)水泵的設(shè)計(jì)及工藝工裝設(shè)計(jì)。共分為 章，水泵的設(shè)計(jì)：包括水泵的設(shè)計(jì)參數(shù)流量、揚(yáng)程（揚(yáng)程近似等于壓力） 、轉(zhuǎn)速，設(shè)計(jì)水泵的軸、葉輪、泵體、等部件，然后對其部件進(jìn)行校核。工裝方面主要是根據(jù)工藝的加工程度，經(jīng)濟(jì)，方便情況來確定所用夾具的類型，選擇定位元件，誤差等方面設(shè)計(jì)計(jì)算。本設(shè)計(jì)雖以加工工藝，工裝為主，但對泵的設(shè)計(jì)也作了詳細(xì)的說明， 本設(shè)計(jì)在設(shè)計(jì)內(nèi)容中所涉及的問題比較詳細(xì)的說明計(jì)算，關(guān)鍵詞 葉輪，泵軸，蝸殼，加工工藝，專用夾具，定位，夾緊，誤差 ABSTRACTThe engine design is the design of pumps and process equipment design. Is divided into chapters, the design of pumps: the design parameters, including pump flow, head (approximate equivalent to the pressure head), rotational speed, the design of water pump shaft, impeller, pump body, such as ponents, and then check its ponents. Process water pump body design principles from the processing technology, we can see that for the process map parts of the ponents of the processing level, economic precision, to determine the processing methods, such as the end of the car, hole drilling, boring, such as processing methods and processes the identification, selection of processing equipment and process equipment and to 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 .........................................................................................................................................IABSTRACT ..............................................................................................................................II第 1 章 緒論 .............................................................................................................................1第 2 章 發(fā)動機(jī)水泵的設(shè)計(jì) .....................................................................................................3 泵的主要參數(shù)和結(jié)構(gòu)方案的確定 ........................................................................................................3 提供設(shè)計(jì)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(jìn)出口直徑 .................................................................................3 計(jì)算比轉(zhuǎn)速 ,確定級數(shù) .............................................................................................................3sn 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(jìn)口安放角的選擇 ............................................