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黑龍江工程學院本科生畢業(yè)設計
摘 要
捷達轎車在我國應用十分廣泛，而變速器是整車的關鍵總成之一。其功用是在不同的使用條件下, 改變發(fā)動機傳到驅動輪上的轉矩和轉速, 使汽車得到不同的牽引力和速度, 同時使發(fā)動機在最有利的工況范圍內工作。通過捷達轎車變速器的設計，使其變速器性能更好具有一定的實際意義。我設計的變速器主要內容：
1.變速器的總體的方案的確定。對變速器的功能和要求進行確定，對結構方案確定，和變速器主要零件結構的方案分析。
2.變速器主要參數(shù)的選擇與主要零件的設計。對變速器主要參數(shù)進行選擇，對各檔傳動比及其齒輪齒數(shù)的確定，齒輪邊位系數(shù)的選擇。
3.變速器齒輪的強度計算與材料的選擇。對齒輪的損壞原因及形式的確定，對齒輪的強度計算與校核。
4.變速器軸的強度計算與校核。變速器軸的結構和尺寸的計算，對軸的校核。
5.變速器同步器的設計和操縱機構。對同步器的結構的確定，同步器同步環(huán)主要參數(shù)的確定，變速器的操縱機構的選擇和確定。
關鍵詞：捷達；變速器；主要參數(shù)；零件；校核
ABSTRACT
The jetta cars used widely in our country, and the key is the vehicle transmission is one of the assembly. Its function is used in different conditions, changes to the drive wheels on the engine torque ancd rotational speed, make cars get different traction and the engine speed, and at the same time at the most favorable conditions range work. Through the jetta car transmission design, make its transmission better performance has certain practical significance. I designed the transmission main contents:
1. The transmission of the overall plan is affirmatory. The function and requirement of the transmission determined to structure plan, and the structure of main parts and the transmission scheme analysis.
2. The main parameter selection and transmission of main parts design. Of the transmission main parameters of each gear transmission choice, and determine the pinion gear, gear edge position coefficients choice.
3. Transmission gear strength calculation and material selection. The damage of gear determination of reason and form of gear, strength calculation and checking.
4. Transmission shaft strength calculation and checking. Transmission shaft structure and size of the calculation and shaft dynamicrigidity.
5. Transmission synchronizer design and operation. The structure of synchronizer determination of synchronizer synchronous ring, main parameter is determined, the transmission of the choice and determination of manipulated mechanism.
Keywords: jetta; Transmission; Main parameters; Parts; checking
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