三速變速箱設計畢業設計(留存版)

　　

【正文】 llow shaft, one end of the third axis to insert the hollow shaft of the first to support themselves.A small teeth, synchronizer, thick small teeth Synchronizer is a symbol. Gear raw edge of the groove and shiny, like pork on a skewer is the location of speed, speed gearbox driven fork around Mobile, Gear makes around Mobile.Transmission at the same time, there can be only one pair of meshing gears, otherwise we will not be turning the dead. This task is achieved by the transmission lid. Transmission build simple structure, nothing hightech, but it is full of wisdom, very clever and decided to speed fork movement. Machinery is the case, a stress Qiao Jing. Simple things can be plicated mission, another example is the firearms, nothing above circuit boards, The movement is the crystallization of wisdom 中文翻譯齒輪及變速箱齒輪及齒輪變速箱（統稱齒輪產品）是機械工業的關鍵基礎件，幾乎所有機械成套裝備的傳動部件都離不開齒輪。 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。配合尺寸：變速箱中有配合要求的零件應標注配合尺寸。滾動軸承的潤滑，考慮箱體結構可選用脂潤滑。參【1】附表68計算故安全。畫轉矩圖（g）。分別求出垂直面上的支反力和水平面的支反力。根據軸上零件的定位、加工要求以及不同的零件裝配方案，參考軸的結構設計的基本要求，可確定軸的各段尺寸，得出如圖51所示結構形式。由于用軟齒面齒輪的方案，其齒面強度相對較弱些，故按式（316）較合理。計算轉矩：，查【1】表92，得。=3=Ⅱ軸 P=P對本文的研究做出重要貢獻的個人和集體，均已在文中以明確方式標明。 本變速箱中變速的方式采用滑移齒輪實現三對齒輪的依次嚙合。設計任務包括：變速箱裝配圖、帶輪零件圖、軸的零件圖、齒輪零件圖、箱體零件圖；其中，除帶輪零件圖、軸的零件圖外，其余三張圖都是在計算機上完成的。=9550=由于選用軟齒面齒輪的方案，其齒面強度相對較弱些，故按式（316）式較合理。(三)初步確定齒輪的基本參數和主要尺寸選擇齒輪類型根據齒輪傳動的工作條件（中速，中載）可選用直齒圓柱齒輪傳動。畫轉矩圖（g）。（6）校核軸的強度根據軸的結構尺寸和當量彎矩圖可知，A(即支點A處)截面彎矩最大，且截面也非最大，屬于危險截面，其余截面相對而言是安全面。對于零件上的分布載荷或轉矩當作集中力作用于軸上零件的寬度中點。由資料【2】198頁87式可得（四）軸承壽命計算因；故校核右軸承的壽命；由資料【2】197頁式（82）得 從以上計算可知兩類型的軸承均滿足各自的需求。軸承蓋：根據結構要求采用嵌入式軸承蓋各尺寸由【3】。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。s vitality. Agricultural Machinery Gear Works With multiplying market development, the majority of farm vehicles to change gear. For example, Changzhou Flying Group (formerly Changzhou Gear Works) has developed into the country39。1986年由機械部與國家技術監督局聯合投資在鄭州機械研究所籌建了國家齒輪產品質量監督檢測中心，開始了國家齒輪產品質量的監督性抽查。1995年由中國齒輪專業協會協助機械部編制了 甸第一部齒輪行業九五規劃。齒輪行業的科研、標準、情報的歸口工作由機械科學研制院分遷鄭州的鄭州機械研究所承擔。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. National Gear annual output of about 25 billion yuan. The annual output of 200 million yuan to 20 billion yuan in 15 enterprises, sold 50 million yuan more than 45 enterprises. China has ascended to the world39。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。（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。由此可得右軸承：；由資料【1】表87得：=，查資料【1