硬齿面双圆弧齿轮在200铜带轧机上的应用

本文简要论述了硬齿面双圆弧齿轮在200轧机中的应用,指出硬齿面双圆弧齿轮具有承载能力高、容易形成油膜、磨损小的种种优点。在中、低速的传动中,采用低温氮化工艺（不磨齿）,可有效地满足使用要求。使用寿命比渐开线齿轮成倍提高,能取得良好的经济效益。     

双圆弧齿轮减速器的参数优化

针对轧钢企业轧制产量逐年上升 ,与轧机相接的渐开线齿形齿轮减速器承载能力严重不足的现状 ,提出将减速器的渐开线齿形变为抗点蚀能力较强的双圆弧齿形。首次将混合离散变量的优化设计算法运用于双圆弧齿形齿轮减速器参数设计。用此方法完成了湖南湘钢的 2 5 0线材轧机主减速器的变型设计。实践证明 ,减速器的运行情况良好     

双圆弧齿轮与渐开线齿轮承载能力对比试验研究

双圆弧齿轮具有承载能力高、使用寿命长等特点。一重集团公司就双圆弧齿轮与同参数、同材质热处理渐开线齿轮进行了承载能力的疲劳试验对比研究,结果表明前者的承载能力为后者的1.5倍。本文详细阐述了试验设备、条件与方法,并对试验结果进行了对比分析。     

双圆弧齿轮

双圆弧齿轮是单圆弧齿轮的一项新发展,它与单圆弧齿轮相比,具有承载能力高,使用寿命长,传动噪音小,加工工艺装备简单等优点,因此是一项有发展前途的新型齿轮传动。一、双圆弧齿轮基本概念圆弧齿轮可以看成一段圆弧(母圆)沿着圆柱面上螺旋线(准线)运动而形成的圆弧螺旋曲面。母圆在法面内称为法面圆弧齿轮;     

双圆弧齿轮啮合点载荷分配研究

不同齿数的双圆弧齿轮啮合传动时,由于齿宽不相同,轮齿在受力时的弯曲变形也不相同,则轮齿每个啮合点处的接触应力不相同。建立双圆弧齿轮啮合点接触力的数学模型,并根据弹性力学和材料力学计算出了轮齿弯曲刚度,通过实例计算获得了不同齿数、模数及重合度时双圆弧齿轮各啮合点处的接触力。研究结果将为双圆弧齿轮齿廓修形及提高齿轮承载能力提供依据。     

太钢大型冷轧机齿轮机座上的双圆弧齿轮

本文论述了双圆弧齿轮在太钢大型冷轧机齿轮机座上的应用,采用了组合式人字齿轮、液压装卸无键联结、多列滚动轴承等新技术。1984年至今运转良好,提高了承载能力,取得良好的经济效益。     

渗碳硬齿面双圆弧齿轮超硬加工技术

为了拓展圆弧齿轮的应用范围 ,本文介绍了渗碳硬化双圆弧齿轮超硬加工技术。应用这项技术加工的硬齿面双圆弧齿轮 ,其承载能力与相同规格的硬齿面渐开线齿轮相当     

渗碳硬齿面双圆弧齿轮超硬加工技术

为了拓展圆弧齿轮的应用范围,本文介绍了渗碳硬化双圆弧齿轮超硬加工技术,应用这项技术加工的硬齿面双圆弧齿轮,其承载能力与相同规格的硬件渐开线齿轮相当。     

基于高弯曲承载能力的齿轮加工关键技术研究

齿根过渡曲线是影响齿轮弯曲承载能力的重要因素,它由刀具齿顶圆弧共轭形成,因此研究齿轮加工方式及刀具刀顶形状对于提高齿轮弯曲承载能力具有十分重要的意义。针对渐开线圆柱齿轮弯曲承载能力,考虑不同的齿轮加工刀具及齿高系数和变位系数等因素,建立相应的齿根过渡曲线模型,通过折截面法探究齿轮加工方式及刀具刀顶形状对齿轮弯曲承载能力的影响,并通过有限元分析对理论结果进行验证。研究表明:当齿轮基本尺寸不变时,对于不同使用要求,高变位时用齿条型单圆弧刀具加工的齿轮弯曲承载能力高于齿条型双圆弧刀具和齿轮型刀具;角变位且小齿轮变位系数为零时,用齿轮型单圆弧刀具加工的齿轮弯曲承载能力高于齿条型刀具。     

渐开线齿轮和标准双圆弧齿轮的接触有限元分析

本文以Pro/E软件为基础,分别建立渐开线齿轮和标准双圆弧齿轮的三维接触模型,进行ANSYS接触分析。通过比较等效应力分布云图,分析两种齿轮的优缺点和主要应用。结果表明,在制造成本及制造工艺方面渐开线齿轮具有优势,在齿轮泵方面应用较广;在接触强度和承载能力方面渐开线齿轮不及双圆弧齿轮,双圆弧具有广阔应用前景。本文为齿轮的研究,特别是标准双圆弧齿轮的研究提供借鉴。     

硬齿面双圆弧齿轮在船舶中的应用

本文扼要介绍了1975年以来研制的硬齿面双圆弧齿轮的主要参数及其在长江船舶上的应用简况。1983年投运至今,齿轮完好无损。     

双圆弧齿轮的接触疲劳强度计算方法

在齿面上钻小孔,埋导线,用电接触法测得通电时和断电时的齿轮转角,换算成瞬时接触迹宽度。对不同螺旋角和不同载荷时测得的接触迹宽度拟合成公式,续而推导出接触应力公式。又用一批齿轮作疲劳试验,得到接触疲劳极限应力,它与应力公式配套,可用于JB2940-81齿形的双圆弧齿轮的接触疲劳强度计算。     

Gear Lubrication in Inert Gas Atmospheres

An investigation was made of the effect of inert gas atmospheres on the gear load-carrying capacity of lubricants. The experiments were performed in two types of gear test machines, using case-hardened AMS-6260 steel test gears. It was found that two mineral oils (a solvent-extracted turbine oil base stock and a USP grade white mineral oil), as well as the same oils fortified with different extreme-pressure additives, all exhibited a decided increase in load-carrying capacity when the gears were operated in an atmosphere of nitrogen or argon instead of air. On the other hand, the response of synthetic lubricants was not found to be necessarily similar. In fact, only one of the six synthetic fluids tested showed any significant increase in load-carrying capacity when the gears were operated in a nitrogen atmosphere.     

ZY-1型硬齿面双圆弧齿轮齿形设计

给出了中外现有硬齿面双圆弧齿轮齿形，分析总结了前人在硬齿面双圆弧齿轮齿形设计方面的工作；在此基础上，设计出针对齿面硬度大于58HRC，适用于低速重载齿轮传动的刮齿、磨齿双圆弧齿轮新齿形。用三维有限元对新齿形进行应力应变分析，计算结果表明新齿形的最大应力比GB／T12759规定的齿形小35％。     

双圆弧斜齿齿轮泵脉动特性分析及齿形设计

针对普通渐开线齿轮泵流量脉动大、噪声大以及困油现象等问题,设计出一种以双圆弧斜齿轮为运动副的齿轮泵。对比分析啮合特性,得出双圆弧斜齿轮传动的优越性。以正弦曲线为过渡曲线,利用啮合共轭原理求解出双圆弧斜齿轮端面齿廓方程。采用等面积法求解了双圆弧斜齿齿轮泵的最大和最小瞬时排量,得出理论脉动趋于零的结论。利用FLUENT三维动网格技术,对比分析齿轮参数相同的双圆弧斜齿轮泵和渐开线斜齿轮泵的流量脉动,得出前者的流量脉动远小于后者的结论。     

Scuffing Tests on Gear Oils in the FZG Apparatus

The FZG test is a usual and standardized method in West Germany to evaluate the antiscuffing properties of oils for reduction gears, hypoid gears, automatic transmission gears, etc. The paper gives a brief survey of the test apparatus, the test gears, and the test procedure. It describes also the criteria of failure and the evaluation of the results, taking into account not only the load-carrying capacity but also the wear performance of an oil. The repeatability and the scattering range is discussed with respect to the test conditions. The field of application for standardized gear rigs is pointed out. This is followed by a discussion of results showing the effect of tooth profile, mineral and synthetic oils, pitch line velocity, temperature, and surface treatment on the load-carrying capacity.

Furthermore the paper presents a formula to transfer the obtained test results to other gears. Results of the FZG apparatus are compared with values obtained on Ryder and IAE machines.     

渗碳淬火双圆弧齿轮刮削工艺试验研究

使用硬质合金刮削滚刀，应用正交试验法，对渗碳淬火双圆弧齿轮（齿面硬度58HRC－62HRC）进行了刮削加工工艺试验研究，推荐了适用的刮削工艺规范。采用此规范加工的齿轮在工业现场应用良好。     

Pitting load capacity test on the FZG gear test rig with load-spectra and one-stage investigations

Lubricants in their combination of base oil and additive influence the pitting and micropitting load-carrying capacity of cylindrical gears. The aim of the FVA ‘Pitting test’ research project was to develop and establish a test method on the standard FZG gear test rig with a centre distance a = 91.5 mm. Two different test procedures were proposed, one using a load spectrum and the other a constant load. These tests can be used to determine the relative pitting load capacities of reference and candidate oils. From these results the pitting load-carrying capacity can be calculated.     

Contact endurance of gearing teeth subjected to ion-beam nitriding

Gears treated by intense nitrogen ion flows were calculated for preventing deep contact pitting, allowing for the real distributions of hardness in the depth of the hardened layer and reduced stresses. A method for calculating the contact endurance of gears hardened by ion-beam nitriding was proposed. The results of the calculations and experiments have shown that ion-beam nitriding leads to an increase in the load-carrying capacity of a gear 1.31 times in comparison with that of a gear with gears subjected to traditional nitriding; the wear resistance of the ion-nitrided gears is two times greater than that of hardened and tempered gears.