本文選題：傳動軸 + 零件加工工藝　； 參考：《吉林大學》2016年碩士論文

【摘要】：傳動軸作為汽車傳動系統(tǒng)的主要部件,在車輛行駛過程中起著傳遞運動和扭矩的作用,其高速旋轉(zhuǎn)性能對整車的使用性和乘坐的舒適性至關(guān)重要。本文以“某汽車零部件公司卡車傳動軸零件加工及總成裝配工藝改進”項目為切入點,通過對零件加工工藝和總成裝配工藝的分析,從外花鍵加工工藝、端齒加工工藝、滑動副及中間支承注脂工藝、傳動軸整體裝配工藝、內(nèi)花鍵涂覆工藝等改進項目,去探討卡車傳動軸的抖動問題產(chǎn)生的原因及解決方案。根據(jù)市場反饋信息,傳動軸抖動問題在重型卡車傳動軸索賠模式中,占比超過30%。其原因是傳動軸具有高速旋轉(zhuǎn)性能,且結(jié)構(gòu)較為復雜,所以不可避免的存在抖動現(xiàn)象。傳動軸的抖動存在許多危害,首先產(chǎn)生噪音危害,作為汽車底盤系統(tǒng)的重要部件,會大大影響整車的舒適性;其次,降低傳動效率,產(chǎn)生配合松動,甚至零件損壞,存在風險事故。傳動軸總成動平衡量發(fā)生改變的因素很多,包括內(nèi)外花鍵配合的間隙、萬向節(jié)叉的軸向竄動、端面法蘭的配合精度、傳動軸在高速旋轉(zhuǎn)時的彈性變形、軸管處平衡片開焊導致脫落等,這些原因都會使傳動軸總成偏離其中心位置,會發(fā)生相對位移的彎曲振動。同時,傳動軸在旋轉(zhuǎn)中,因偏離中心而產(chǎn)生的慣性力,是引起彎曲振動的主要原因。當傳動軸的轉(zhuǎn)速與其彎曲振動產(chǎn)生的固有頻率相等時,便會出現(xiàn)共振問題,致使振幅急劇增加,整車底盤系統(tǒng)會產(chǎn)生不同程度的晃動,更嚴重的情況會導致傳動軸的變形或折斷。而此時的轉(zhuǎn)速即為傳動軸的臨界轉(zhuǎn)速,通常也稱為“危險轉(zhuǎn)速”。根據(jù)以上原因分析,零件加工及總成裝配工藝是影響傳動軸總成質(zhì)量的重要因素。本文通過對外花鍵加工、端齒加工及總成裝配工藝的改進,達到提高傳動軸質(zhì)量、降低三包索賠,為企業(yè)提高效益的目的。目前,這些工藝改進項目已經(jīng)逐步應(yīng)用到生產(chǎn)中。
[Abstract]:As the main component of the automobile transmission system, the transmission shaft plays the role of transmitting motion and torque in the vehicle driving process. Its high-speed rotation performance is very important for the use of the whole vehicle and the ride comfort. Based on the project of "improvement of parts processing and assembly technology of truck drive shafts in a certain automobile parts company", through the analysis of parts processing technology and assembly assembly technology, this paper analyzes the processing technology of outer spline and end teeth. The improvement items such as grease injection process of sliding pair and intermediate support, integral assembly process of transmission shaft and coating process of internal splines are discussed to discuss the causes and solutions of the jitter problem of truck drive shaft. According to market feedback, shafts jitter accounts for more than 30% in heavy truck shaft claim mode. The reason is that the shaft has high speed rotation performance and complex structure, so there is inevitable jitter phenomenon. The jitter of the drive shaft has many hazards, first of all, noise hazard, as an important part of the car chassis system, will greatly affect the comfort of the whole car; secondly, reduce the transmission efficiency, produce loose coordination, even parts damage, There are risks and accidents. There are many factors that change the dynamic balance of the transmission shaft assembly, including the gap between the internal and external splines, the axial movement of the universal joint fork, the matching accuracy of the end flange, and the elastic deformation of the drive shaft when rotating at high speed. The opening and welding of the balance piece at the axial tube will lead to shedding, which will cause the transmission shaft assembly to deviate from its central position and cause the bending vibration of the relative displacement. At the same time, the inertia force caused by deviation from the center is the main cause of bending vibration. When the rotating speed of the drive shaft is equal to the natural frequency generated by its bending vibration, the resonance problem will occur, resulting in a sharp increase in the amplitude, and the whole chassis system will produce varying degrees of sloshing. More serious conditions can cause the shaft to be deformed or broken. At this point, the speed is the critical speed of the drive shaft, also known as "dangerous speed." According to the above analysis, parts processing and assembly process are important factors affecting the quality of transmission shaft assembly. In this paper, through the improvement of external spline processing, end tooth processing and assembly assembly process, the quality of transmission shaft is improved, and the claim of three packets is reduced, and the purpose of improving the efficiency of the enterprise is obtained. At present, these process improvement projects have been gradually applied to production.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U463.216.2

【參考文獻】

相關(guān)期刊論文 前2條

1 唐勇華;;汽車涂裝生產(chǎn)中的靜電噴涂簡介[J];現(xiàn)代涂料與涂裝;2009年03期

2 賈鏡如;溫度變化對自動線加工精度的影響[J];國外組合機床;1974年S4期

，

本文編號：1835268