主动底盘系统的发展趋向（下）

本文论述“主动底盘系统”范畴内两个最现实的问题:悬架减振及四轮转向。关于悬架减振,首先探讨传统悬架的规律,然后阐述主动和半主动悬架系统对悬架可能作出的改进。对所谓“悬空阻尼”系统,着重作了介绍。四轮转向方面首先论述了比例四轮转向、质心侧偏角补偿和可调节的四轮转向等几种基本型式的理论基础。接着介绍了现有的四轮转向系统。     

鼓形齿轮联轴器齿廓分析研究

从滚刀基本蜗杆齿面出发，按照滚切鼓形齿轮的运动，运用空啮合理论，导出了滚切加工的鼓形齿轮面方程，定量分析了齿廓形状及其影响因素，得到了滚切加工的鼓形外齿轮除中央截面为浙开线外，其余任何垂直于轴心线的截面或是过球心的截面都不是浙开线齿形，而且还存在严重的齿面扭曲畸变的结论。     

Theoretical Explanation for Lower Order Harmonic Resonance Phenomenon of Three—Ring Gear Transmissions

Dynamic investigations revealed that lower order harmonic resonance phenomenon exists in the threering gear transmission. That is, when the input speed is close to 1/3, 1/6, 1/9,-“, 1/3n of the primary natural frequency of the transmission, the loads on the bearings and gears are especially high. This paper explained thisphenomenon from the viewpoint of parametric resonance in terms of perturbation technique. A conclusion was drawn that the basic reason for this phenomenon is the primary resonance caused by forcing excitation and para-metric resonance caused by parametric change.     

行星齿轮机构进行优化设计基学模型的建立

优化设计作为一种现代的设计方法在机械设计领域已经得到了广泛的应用,针对行星齿轮机构优化设计过程中数学模型的建立方法进行了论述,并得出相应的结论。     

减小大型自卸汽车高压齿轮泵内泄漏的研究

通过对大型自卸汽车高压齿轮泵内泄漏原因的分析,提出了减少内泄漏的方法,并进行了实际应用,取得了较好效果。     

驾驶失误的原因分析及预防对策

水上交通事故,无论是直接还是间接原因,很大程度上与驾驶失误行为有着密切的关系。文章试图从分析驾驶失误行为的主要表现入手,阐述导致驾驶失误行为的内在原因,对如何控制和预防驾驶失误进行了探讨。     

论摆线轮的顺利安装

本文指出,在摆线针轮减速器中,只要满足针齿壳内曲线在给定的摆线轮齿廓的第二共轭曲线之外,即可保证两片相错180°的摆线轮在任意位置均能顺利装入针齿壳内,并编制了相应的计算机软件,解决了摆线轮的顺利安装问题.     

A NEW GENERATING METHOD FOR THE MACHINING OF A CYLINDRICALGEAR WITH SYMMETRIC ARCUATE TOOTH TRACE

Objective To introduce a new generating method for the machining of a cylindrical gear with symmetric arcuate tooth trace. Methods Adopting this method, the key problems of mismatch control and manufacturing of symmetric arcuate tooth trace gears are solved by using suitable cutter tilt and a new generating method with double-edge gear-wheel cutter. The machining principle is analyzed and the mathematical model of generating motion is established. Then the tooth flank equation and differential geometrical parameters are discussed. Results The minim alteration of cutter tilt will make the contact flank area change so as to satisfy the special requirements. It is easy to realize the tip relief of gearing by altering coefficients of every moving axis. Because the tooth has the arc shape, the symmetrical arcuate cylindrical gears have higher overall strength and it is easy to perform the flank grinding for high precision. Conclusion This new generating method has higher productivity. It is easy to get a perfect contact zone and fully give play to the potential bearing capacity of the gears. The symmetrical arcuate cylindrical gears can be used in highly durable and heavy duty gearing applications.     

三环板针摆行星传动环板针齿壳内曲线加工结果的检验

介绍了利用AutocAD VBA对三环板针摆行星传动减速器针齿壳内曲线的加工结果进行检验的方法并编制了相应软件．以环板中心为原点建立坐标系，在AutocAD中用其二次开发工具VBA编程自动绘制出环板针齿壳内曲线和摆线轮相对于环板的运动包络线，通过它们的干涉情况可以判断在加工针齿壳内曲线时铣刀选取是否合理．为了检验摆线轮相对于环板运动包络出包络线的准确性，还介绍了绘制摆线轮运动曲线族的内容．本文介绍的方法和编制的软件可用于指导现场中环板针齿壳内曲线加工铣刀的选取。     

高速机车牵引齿轮油的研究

在分析国外高速铁路机车牵引齿轮油的基础上，研究出一咱适用于我国高速机车的牵引齿轮油，并与我国机车现用的齿轮油进行实验室台架性能对比试验结果该油具有更好的使用性能。