【導讀】不同的因素和產生機理提出了相關改進消除降低噪音的調整方案。乘人員的駕駛或乘坐舒適性。為對驅動橋單級主減速器噪音進行有效控制，根據(jù)其產。給兩側半軸，實現(xiàn)驅動車輛行駛的目的。噪音；半軸齒輪與行星齒輪嚙合旋轉時產生的噪音；主被動齒輪嚙合旋轉時的噪音；能夠有效地傳遞鎖緊軸向力。措動，這種措動使擋油盤厚度磨損加劇容易導致小軸承軸向松動，從而產生噪音。條件下會發(fā)出較大噪音。速器殼體時需要使用止口進行精確定位。尺寸規(guī)格進行標準化與系列化，以便在調整選用時方便快捷的選取。修形的方法，使其動載荷及速度波動減至最小，以達到降低噪聲的目的。轉速的升高和傳動比的減小而增大，減速器的工作條件如載荷的變化，潤滑劑的種類，機內齒輪嚙合產生周期性的交變力對軸承、箱體的作用而引起的發(fā)生振動。計與齒輪精度兩方面來考慮。對標準系列減速器來說，齒輪的制

　　

【正文】 analyzed via an ADAMS analysis of the automatic tensioners subjected to static and dynamic loads that can be expected from a frontend accessory belt drive system. The primary function of the accessory belt driven system is power transmission from the crankshaft pulley to the accessory ponents. Accessory ponents include the alternator, powersteering pump, air conditioner, and the water pump. The automotive engineering literature is rich in descriptions of belt/chain drives [18]. The model developed herein differs in that it is fully implemented in mercial software, plete with a GUI, and captures fully coupled dynamics in a bined finite element / multi body dynamics approach. it is a alternating stress, can cause vibration and gear noise, so the wheel dynamic balance testing is necessary for the body part. Precision gear box bore the impact of noise Box Hole accuracy on the noise reducer has prominent effects. Aperture hole is precision accuracy, central moment of the error, the parallelism of the centerline of the hole and tilt. Production practice, we understand the bearing outer ring and the gear box with the clearance hole of the bearing noise, when the hole clearance and the bearing outer ring around the , the bearing of the machine can reduce the noise impact. Assembly accuracy on the noise Quality of the gear assembly has a direct impact noise control. Therefore, the assembly in the machine should be noted: ① normal gear at all levels to ensure the engagement side of the gap, meshing well, pay attention to as part (such as the sleeve) fixed, In the past decade the applicability of beltdrives has been extended significantly due to their increased reliability. With automotive engines it is now mon to join a large number of beltdrives into a single, long beltdrive with several tensioner pulleys. However, these beltdrives can exhibit plex dynamic behaviors, which can lead to undesirable noise and aim of this paper is to present an effective and realistic numerical model to predict the dynamic response of such beltdrives. Based on the simulated responses the beltdrive construction can then be optimized in order to increase efficiency, reduce noise and vibrations, beltdrive model is based on flexible multibody system dynamics, where the belt is modeled using beam elements. With the developed contact model between the belt and the pulley, we can accurately predict the contact forces and stickslip zones between the belt and pulley. The identification of the beltdrive39。s material properties is based upon experimental data. Several original experiments are proposed in order to extract the damping and friction characteristics of multiribbed belts. Finally, the applicability of the beltdrive model is presented by simulating a serpentine beltdrive,considering nonsteady beltdrive operational conditions,which are mon in automotive engines. to avoid the gear end of the runout and so on. ② Install bearings to avoid undue percussion, in the bearing transport, the assembly process to avoid the collision. ③ gear drive ponents required for the cleaning, the assembly process to avoid the bump on the transmission ponents. [4] 5 Conclusion Singlestage vehicle main gear axle noise problem is more plex systems, both with regard to the precision of the different ponents, but also need to be controlled separately in the assembly areas, the actual cause of the noise which may occur in one part of May also exist in numerous aspects of the problem is, as effectively prevent the occurrence of noise, you need the assembly in the manufacturing sector and all aspects of control and adjustment, especially adjustment of the need for strict control of postprocess method, based on actual feedback to constantly test The amendments adjust the volume, to ultimately a product of reasonable control. In this paper, the noise generated from the gear manufacturing precision and assembly precision analysis of two aspects. With the continuous improvement of manufacturing technology, advanced assembly process of the development and implementation, and strict implementation of relevant national and international standards, will be able to improve the quality of gear. REFERENCES [1] T. Vorm Mechanical design reducer, (1976) 241–250. [2] , and G. Barrow Study of noise reducer, (1969) 321–339. [3] . Philip Main gear for the vehicle drive axle problems of noise control, Int. J. Mach. Tool . 11 (1971) 133–144. [4] . Black, . James The noise problems of Gear , J. Eng. Ind. 103 (1981) 13–21. [5] . Yeo, . Lui and V. Phung, Gear reducer installed on the impact of noise, J. Mater. Process. Technol. 29 (1992) 41–46.