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根据圆弧齿轮的啮合传动原理,在深入分析圆弧齿轮传动副轴线平行度误差与传动误差之间相互关系的基础上,研究了由于制造和安装造成的齿轮副轴线平行度误差,由此产生的齿轮副中心距偏差,从而导致齿轮副的传动误差问题,并推导出计算该传动误差的定量表达公式,利用该计算公式可以比较方便地计算出传动误差的数值。 相似文献
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齿轮的轴是安装在箱体孔内的,箱体孔的加工误差必然导致齿轮副的传动误差。多年来,箱体孔的中心距偏差和轴线的平行度误差,一直是借用齿轮副的中心距偏差和轴线平行度误差。直到颁布了JB/GQ1071-85《机床圆柱齿轮箱体孔中心距偏差和轴线平形度公差》标准后,箱体孔的加工才有了单独的标准可以遵循,本文就箱体孔中心距偏差和齿轮副的中心距偏差的关系,箱体孔轴线平形度误差对齿轮副轴线平行度误差的影响,以及这二者对齿轮传动精度的影响进行讨论。 相似文献
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双圆弧弧齿锥齿轮章动传动的齿面接触特性对安装误差极为敏感.为揭示安装误差对齿面接触特性的影响规律,开展了含安装误差的双圆弧弧齿锥齿轮齿面接触分析.推导出章动式双圆弧孤齿锥齿轮齿面方程;借助齿面接触分析(TCA)获得齿轮副的齿面接触迹线和几何传动误差;通过算例分析了内、外锥齿轮锥点误差及齿轮副轴线交角误差对双圆弧弧齿锥齿轮副齿面接触特性的影响规律.研究表明,随着各项安装误差的增大,齿轮副接触迹线沿齿高方向的偏移量增大;凸、凹齿面接触迹线沿齿高方向的偏移量对安装误差变化的敏感程度不同;正的安装误差比负的安装误差对齿轮副传动误差影响更大.为获得理想的啮合性能,应合理控制章动式双圆弧弧齿锥齿轮副的安装误差. 相似文献
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圆弧齿轮传动中心距误差敏感的正确解释 总被引:1,自引:0,他引:1
我国出版的圆弧齿轮权威著作中对圆弧齿轮传动中心距误差敏感的解释存在重大缺陷,误导了设计者。如果按照这种解释并进行数字验证的话,所谓的圆弧齿轮传动中心距误差敏感则是一个伪命题。文中根据作者对圆弧齿轮啮合原理、设计方法的重新诠释,推导出中心距误差对圆弧齿轮传动比以及压力角的影响。找出了圆弧齿轮对中心距误差敏感的真正原因,对克服圆弧齿轮的这一弊端有重要意义。 相似文献
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变双曲圆弧齿线圆柱齿轮作为一种新型传动方式,为研究几何偏心误差对其传动精度的影响规律,利用基于旋转刀盘加工原理得到的齿面方程,运用MATLAB与UG建立起精确的含几何偏心误差的变双曲圆弧齿线圆柱齿轮的三维模型,运用ADAMS分析得到该齿轮在啮合过程中的转角误差变化规律。得到了其几何偏心误差对传动精度的影响规律,将仿真分析结果与理论计算结果进行对比,得到理论几何偏心误差计算值与实际几何偏心误差仿真计算值相对偏差量较小。验证了基于ADAMS动力学分析齿轮几何偏心误差的可行性,同时验证了传统理论计算法在变双曲圆弧齿线圆柱齿轮上应用的正确性。得到通过测量齿轮间的动态传递误差可以来间接计算变双曲圆弧齿线圆柱齿轮的几何偏心误差值。 相似文献
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圆弧齿轮在工业中得到了广泛应用,尤其是在高速,重载传动中具有独特的优点,然而,其齿形误差的检测却是一个尚示很好解决又迫切需要解决的问题。本文结合现有测量手段,分析探讨了各种测量圆弧齿轮形误差的原理,方法,并民认极坐标测量圆弧齿轮齿形误差为例以详细阐述。 相似文献
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为了研究轴线倾斜造成的装配平行度误差对齿轮啮合过程齿根弯曲变形的影响,设计并搭建了一套齿轮轴线可调节的齿轮箱实验台和完整的应变采集分析系统,并进行实验验证。基于调心滚子轴承内外圈的允许偏差,建立不同轴线偏移程度的齿轮组接触有限元模型,并进行动态仿真分析,获得啮合过程中的齿根应变应力分布曲线;通过对实验所需的不同轴线的调节方式的设计,对比了调节前后两轴角度的偏差实际值与理论值,验证了调节装置的可行性;最后,通过应变片采集卡等组成的应变采集系统,测试了不同轴线平行度误差下的齿根应变值,得到了相应的啮合应变应力分布曲线,并与仿真得到的啮合应变应力曲线进行对比,得出轴线平行度误差对齿根危险截面处弯曲变形应力的影响。 相似文献
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Geometry design and tooth contact analysis of crossed beveloid gears for marine transmissions 总被引:3,自引:0,他引:3
Beveloid gears,also known as conical gears,gain more and more importance in industry practice due to their abilities for power transmission between parallel,intersected and crossed axis.However,this ty... 相似文献
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Xi Chen Chaosheng Song Caichao Zhu Jianjun Tan Najeeb Ullah 《Journal of Mechanical Science and Technology》2018,32(9):4153-4164
Considering flexible shafts, a coupled dynamic model for the gear transmission system of wheel reducer used in electric vehicle was developed. By combining the acoustics finite element modal for housing in Virtual Lab and the coupled dynamic model for gear transmission system, a simulation method was proposed for the prediction of the radiation noise for the wheel reducer. Then, the effects of different macro geometry gear parameters including pressure angle and helical angle on the dynamic response and radiation noise were investigated under the rated working condition. Results show that the peak-peak value of the transmission error dramatically falls in the starting zone, followed by an upward trend with the increase of the pressure angle for the low speed stage gear pair. The minimum transmission error and vibration acceleration occur when the pressure angle is 17°. The increase of the pressure angle does not affect the sound pressure level at the field point obviously. The design case with 17° pressure angle shows the optimum radiation noise level, which is 4.41dB less than the original model. Compared to the pressure angle, the helix angle has a major influence on the transmission error, vibration acceleration and acoustic radiation noise. With the increase of the helix angle, the time-varying transmission error curve becomes more smooth with a lower peak-peak value. Besides, the increase of helix angle results in lowering the varying and fluctuating trend of both vibration acceleration and acoustic radiation noise. The design case with 24° helix angle shows the prime radiation noise level, which is 7 dB less than the original scheme. 相似文献
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A.M.M. El Bahloul 《Tribology International》1987,20(4)
The results are presented of an experimental investigation carried out at Mansoura University Laboratories aimed at studying the effect of change of helix angle and lubricating oil on wear of a relatively new type of gearing of circular-arc tooth-profile. Eighteen pairs of gears of 6 DP, 91.5 mm pitch diameter and different helix angles were run in power circulating gear test rig at different speeds and transmitting different loads, and the gears were lubricated with oils of different viscosities. It was found that wear increases with increasing helix angle and decreases with increase of oil viscosity. Variations of amount of wear with all the test variables are presented. 相似文献
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Optimization of helix angle for helical gear system 总被引:1,自引:0,他引:1
A method is presented to optimize the helix angle of a helical gear from the viewpoint of the transmission error, which is
the deflection of the teeth due to the transmitted load. The deflection of the gear teeth is calculated by using the bending
and shear influence function, which is formulated from the common formula for deflection obtained from FEM, and the contact
influence function based on Hertzian contact theory. Tooth contact analysis is performed to calculate the contact lines of
the helical gear, where the deflection of the tooth is measured. A numerical example is presented to explain a method to optimize
the helix angle of a helical gear system. The relation between the contact ratio and transmission error is investigated through
calculations of the variation in the transmission error with the helix angle.
This paper was recommended for publication in revised form by Associate Editor Hong Hee Yoo 相似文献
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行星滚柱丝杠副轴向弹性变形的有限元分析 总被引:1,自引:0,他引:1
以行星滚柱丝杠副为研究对象,综合考虑螺纹牙接触角和螺旋升角的影响,利用有限元方法计算轴向弹性变形,将有限元解和解析解进行对比,最大误差为4.85%。在此基础上,分析了不同轴向负载作用下接触角和螺旋升角对轴向弹性变形的影响。结果表明,轴向弹性变形中,赫兹接触变形为主要变形;螺纹牙的弹性变形和von Miese应力变化趋势一致,且呈现明显的载荷分布;轴向变形随着接触角和螺旋升角的增大而减小。可见,合理增大接触角和螺旋升角有利于提高行星滚柱丝杠副的传动精度。 相似文献
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理论重合度随中心距和啮合角的变化而变化,其经典计算公式没能完全反映该关系.在当今计算机普及的时代,计算公式的精确性要求优先于简单性要求,因此有必要对其进行补正.基于余弦定理,推导了渐开线直齿圆柱齿轮传动时的理论重合度计算公式,并进行了实例计算.该公式表明,对于特定的一对渐开线直齿圆柱齿轮传动,其理论重合度只与啮合角有关.基于该公式,方便地写出了变位齿轮传动、斜齿轮传动的重合度计算公式.斜齿圆柱齿轮各圆柱面上的螺旋角均为齿面发生线与齿轮圆柱面母线的夹角.补正了斜齿圆柱轮传动因逐渐进入和退出啮合而增加在重合度. 相似文献
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点线啮合齿轮螺旋角β的选择,改变了渐开线齿轮为凑中心距或者从优化角度来选取β值的情况。这种选择往往在齿轮滚齿加工时,不能保证螺旋角β的精度,因而引起螺旋线偏差过大,接触时往往达不到全齿长的接触。文中采用的螺旋角β是在滚齿时,采用各种机床差动挂轮的计算公式计算出来的,精华为一个k值的计算公差。根据不同的k值得到不同的β值。选择该β值后就可以使得一对齿轮在不同的机床上滚齿时误差达到零或最小值,在一台机床上加工时,误差可以达到很小,甚至为零。实践证明其螺旋线偏差小,当齿轮孔平行度达到要求时,一对齿轮可以达到全齿长接触。 相似文献