共查询到19条相似文献,搜索用时 46 毫秒
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基于VBA的平面二次包络环面蜗轮副实体造型 总被引:4,自引:0,他引:4
介绍了采用VBA开发机械零件三维实体造型的实现机制和关键技术,通过平面二次包络环面蜗轮副实体造型程序实例,阐述了在VBA应用程序中三维实体造型的设计方法。 相似文献
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介绍了采用VBA开发机械零件三维实体造型的实现机制和关键技术 ,通过平面二次包络环面蜗轮副实体造型程序实例 ,阐述了在VBA应用程序中三维实体造型的设计方法。 相似文献
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平面二次包络环面蜗轮副润滑油膜厚度优化设计 总被引:1,自引:0,他引:1
本文对平面二次包络蜗轮副啮合过程中的弹流动压润滑油膜产生的条件和机理进行分析 ,以道森公式计算的最小油膜厚度为目标函数 ,以蜗轮齿根弯曲强度、接触强度、蜗杆根切等为约束条件 ,运用Matlab优化工具箱进行优化设计 ,提出平面二包蜗轮副设计的新思路 相似文献
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虽然平面二次包络环面蜗轮副具有传动效率高、承载能力大、使用寿命长等优点 ,但它的应用却始终受到限制。原因主要是 :(1)该型蜗轮传动设计及制造工艺均比较复杂 ,产品制造周期比较长 ;(2 )每生产一种规格的蜗轮副都要制作一把专用蜗轮滚刀 ,增加了蜗轮副的制造成本。基于实例的推理技术利用过去的设计以及设计经验来求解新问题。本文将这一思想与平面二次包络环面蜗轮副的设计结合起来 ,以期在蜗轮副设计和蜗轮滚刀的重用问题上取得成效 ,最终达到提高蜗轮副的设计效率、降低蜗轮副的制造成本的目的。 相似文献
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根据平面二次包络环面蜗轮副生产实践的需要,对平面二包传动的理论与生产实践研究进行了综述,详细地介绍了各方面的进展,同时分析了平面二包研究目前存在的问题并指出了进一步的研究方向。 相似文献
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根据国标GB/Tl6445-1996,提出参考性的平面包络环面蜗杆精度评价补充指标,进行平面包络环面蜗杆精度检测项目的完善;以平面包络环面蜗杆为例,实现对平面包络环面蜗杆误差的求解。 相似文献
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TI(渐开面包络环面)内螺纹蜗杆砂轮磨齿是一项生产率与加工质量结合完美的新工艺。这里以空间啮合理论为基础,分析了该工艺的啮合理论、工作原理和特点,通过例子说明该工艺具有良好的应用前景。 相似文献
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Double enveloping worm gearing is expected to have contact over larger number of teeth and higher load carrying capacity compared to single enveloping worm gearing. In this paper, contact in this gearing is analysed by geometrical simulation of worm gear tooth generation using intersection profiles of different axial sections of worm representing the hob tooth profile with transverse plane of worm gear. The analysis reveals that in the engaging zone a straight line contact always exists in the median plane and intermittent contact exists at the extreme end sections of worm. This has lead to the idea of using two fly cutters positioned at the location identical to the extreme end sections of worm to generate full worm gear tooth thereby eliminating the need for hobs of complex geometry. For a given worm, a mating worm gear is machined in a gear hobbing machine using fly tool in two settings and nature of contact with the worm is checked by a blue test. 相似文献
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Modification design method for an enveloping hourglass worm gear with consideration of machining and misalignment errors 总被引:1,自引:0,他引:1
The influences of machining and misalignment errors play a very critical role in the performance of the anti-backlash double-roller enveloping hourglass worm gear(ADEHWG).However,a corresponding efficient method for eliminating or reducing these errors on the tooth profile of the ADEHWG is seldom reported.The gear engagement equation and tooth profile equation for considering six different errors that could arise from the machining and gear misalignment are derived from the theories of differential geometry and gear meshing.Also,the tooth contact analysis(TCA) is used to systematically investigate the influence of the machining and misalignment errors on the contact curves and the tooth profile by means of numerical analysis and three-dimensional solid modeling.The research results show that vertical angular misalignment of the worm wheel(Δβ) has the strongest influences while the tooth angle error(Δα) has the weakest influences on the contact curves and the tooth profile.A novel efficient approach is proposed and used to minimize the effect of the errors in manufacturing by changing the radius of the grinding wheel and the approaching point of contact.The results from the TCA and the experiment demonstrate that this tooth profile design modification method can indeed reduce the machining and misalignment errors.This modification design method is helpful in understanding the manufacturing technology of the ADEHWG. 相似文献
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介绍了平面二次包络环面蜗杆的产生和特点,对平面二包传动的理论、润滑机理、生产实践和计算机辅助设计等方面进行了详细的论述,最后指出平面二次包络环面蜗杆传动的研究发展方向. 相似文献
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