三速變速箱設計畢業設計(編輯修改稿)

　

【文章內容簡介】 動手柄來實現扇形齒的左右轉動。具體構造參（圖6）圖6第五節 箱體的設計一、潤滑與密封（一）潤滑齒輪采用浸油潤滑。當齒輪圓周速度時，圓柱齒輪浸入油的深度約一個齒高，三分之一齒輪半徑，大齒輪的齒頂到油底面的距離≥30~60mm。滾動軸承的潤滑，考慮箱體結構可選用脂潤滑。潤滑油的選擇：齒輪潤滑，考慮到該裝置用于小型設備，選用LAN15潤滑油。箱體潤滑，考慮到箱體的結構，選用脂潤滑。（二）密封：防止外界的灰塵、水分等侵入軸承，并阻止潤滑劑的漏失。二、變速器的箱體和附件（一）箱體：用來支持旋轉軸和軸上零件，并為軸上傳動零件提供封閉工作空間，防止外界灰砂侵入和潤滑逸出，并起油箱作用，保證傳動零件嚙合過程良好的潤滑。材料為：HT200。（二）附件包括換檔機構、軸承蓋、油標、放油孔及放油螺塞起吊裝。軸承蓋：根據結構要求采用嵌入式軸承蓋各尺寸由【3】。放油孔及放油螺塞：為排放變速箱箱體內污油和便于清洗箱體內部，在箱座油池的最低處設置放油孔，箱體內底面做成斜面，向放油孔方向傾斜1～2使油易于流出。由【3】第六節 裝配圖設計一、裝配圖的作用作用：裝配圖表明變速箱各零件的結構及其裝配關系，表明變速箱整體結構，所有零件的形狀和尺寸，相關零件間的聯接性質及變速器的工作原理，是變速箱裝配、調試、維護等的技術依據，表明變速箱各零件的裝配和拆卸的可能性、次序及變速箱的調整和使用方法。二、變速箱裝配圖的繪制（一）視圖布局選擇3個基本視圖，結合必要的剖視、剖面和局部視圖加以補充。選擇主視圖作為基本視圖，它將變速箱的工作原理和主要裝配關系集中反映在一個基本視圖上。布置視圖時應注意：a、整個圖面應勻稱美觀，并在右下方預留變速箱技術特性表、技術要求、標題欄和零件明細表的位置。b、各視圖之間應留適當的尺寸標注和零件序號標注的位置。（二）尺寸的標注特性尺寸：用于表明變速箱的性能、規格和特征。如傳動零件的中心距及其極限偏差等。配合尺寸：變速箱中有配合要求的零件應標注配合尺寸。如：軸承與軸、軸承外圈與機座、軸與齒輪的配合、等應標注公稱尺寸、配合性質及精度等級。查表可知。外形尺寸：變速箱的最大長、寬、高外形尺寸表明裝配圖中整體所占空間。安裝尺寸：變速箱箱體底面的長與寬、間距及其通孔直徑、外伸軸端的直徑、配合長度及中心高等。（三）標題欄、序號和明細表：說明機器或部件的名稱、數量、比例、材料、標準規格、標準代號、圖號以及設計者姓名等內容。查【6】。裝備圖中每個零件都應編寫序號，并在標題欄的上方用明細表來說明。（四）技術特性表和技術要求技術特性表說明變速箱的主要性能參數、精度等級、表的格式參考書，布置在裝配圖右下方空白處。 技術要求包括變速箱裝配前、滾動軸承游隙、傳動接觸斑點、嚙合側隙、變速箱的潤滑、試驗、包裝運輸要求。結 束 語 至此，全部設計任務均已完成，共繪制裝配圖，零件圖編寫說明書，三項任務。通過這次設計，對四年所學專業課程以及基礎課等均有了比較系統，全面的認識。同時也發現了許多過去存在的問題，例如：計算與較核齒輪，查有關手冊等等，經過同學之間相互幫助，以及知道老師認真幫助講解，終于克服了設計中的許多問題，順利完成了設計任務。同時養成了查資料的良好習慣， 樹立起嚴肅求實的科學作風。因此這次設計增加了我們綜合運用所學知識，解決實際問題的能力。通過這次設計，使自己樹立了正確的設計思想，嚴謹求實的工作作風，培養了分析問題，提出問題，解決問題的能力，為我們將來順利地步入工作崗位打下了許多堅實的基礎，使我們更好地成為合格的工程技術人員，為我國的機械行業作出貢獻。 參考文獻【1】：華中科技大學出版社，【2】成大先.《機械設計手冊》化學工業出版社，第三版，第三卷，；【3】：哈爾濱工程大學出版社，2003【4】：機械工業出版社，【5】王知行、：高等教育出版社，2000.【6】王明珠《工程制圖學及計算機繪圖》，國防工業出版社，1998年8月第一版；【7】:機械工業出版社, 【8】：華中科技大學出版社，【9】（下冊）.北京：煤炭工業出版社，【10】：機械工業出版社，【11】李 ：遼寧科學技術出版社，【12】：機械工業出版社，【13】：哈爾濱工程大學出版社，2003外文資料Gear and gearboxGear and gearbox (collectively Gear products) is the key industrial machinery based pieces, Almost all the outfits mechanical drive ponents are inseparable from Gear. As China gears enterprise under the planned economic system, have long been scattered in the original machinery industry (hereinafter referred to the Department of Mechanical) of the Industrial Development Bureau and the seven other eight Ministry of Industry related departments Management was scattered in the large and allembracing, small side of the mechanical factory production. Fragmentation, with all the departments of gear product standardization, specialization and market development. Gear industry research, standards, centralized intelligence work by mechanical science research center at the Zhengzhou Zhengzhou move machinery Institute. Gear specialization and the rapid development is only 20 years of reform and opening up things. In the past the government statistics, there is no plete statistics gear products. No sector can stand gear industry point of view, the analysis of gear products in the market good, Looking entire gear market development prospects. 1986 by the Ministry of mechanical apparatuses and joint investment in Zhengzhou Institute of mechanical preparation of national product quality gear Supervision and Test Center, and start a national Gear product quality supervision and sampling. 1989 documents issued by the Ministry of MachineBuilding Industry, set up a crosssectoral, Interministries of China Machinery Industry Association generic parts gear professional associations, Secretariat is located in the Department of Mechanical machinery Zhengzhou Institute. 1992 by the Ministry of Machine and the government of Henan Province below electromechanical Health (1992) No. 2069 set up When the Zhengzhou gear products and highlevel technical transactions, Deputy Minister Sun Changji Zhengzhou made a special trip to the ribboncutting. He Guangyuan Minister inscription for the market opened. 1995 by the China Association of gear mechanical assistance, prepared by the Ministry of Austin first gear industry on September 5 plan. Machinery in 1997 by the Ministry of Science and Technology Commission of China and the Association of gear published a joint editorial of the China39。s first Chinese products Gear Contents , catalog is fully reflect the good gear products industry, the most information, the most informative tool. Mechanical Department in 1997 in Beijing held a 97 39。China International Machinery mon parts and special equipment exhibition. Including gear bearings and exhibitions. It standardized the biennial exhibition of market transactions. International Exhibition and sale transactions of convergence. 30 years after the liberation of the planned economic system, China has spent a huge amount of foreign exchange, the introduction of a lot of gearcutting machines and Measuring Instruments, Gear products has not been well. The key problem is lack of specialized production and no standard market petition. 1980s to the 1990s, China39。s rapid development of the market economy, the industrial sector restructuring. Gear of production, and ancillary sales to break the original sectoral boundaries, professional production has developed rapidly. To be marketoriented, according to the laws of the market formed a vehicle with the gear system of the two major industrial gear.Gear for vehicles including cars, motorcycles, farm vehicles, farm machinery, engineering machinery supporting the largescale production of gear. Other metallurgical, construction, petroleum, chemical, mining, power, light industry, textiles, railways, aviation, ships, and other industrial outfits matching gear products, collectively called industrial gear. Gear Works to break the existing sectoral boundaries, crosssectoral and interdepartmental support, and gradually enter the international market. China has formed the backbone Gear Works nearly 200. Nati