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用齿轮油作润滑剂以实现钢蜗杆副传动为目的,分别对用齿轮油润滑下的钢蜗杆副传动和用铜蜗轮油润滑下的铜蜗杆副传动的传动性能进行了试验研究。结果表明用齿轮油可以实现钢蜗杆副传动的润滑要求。为钢蜗杆副传动的推广与应用提供了可靠的依据。 相似文献
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新型涂层钢蜗杆副传动机理研究与传动性能评价 总被引:2,自引:0,他引:2
为解决青铜蜗轮耐磨性差、疲劳强度低等问题,将新型涂层技术应用到钢蜗轮传动中。开展蜗杆传动弹性啮合分析、蜗轮齿面磨损分析和轮齿稳态温度场仿真分析,建立材料特性与蜗杆副应力场、磨损特性及温度场之间的关系,提出评价蜗杆副材料啮合性能、耐磨性及抗胶合能力的方法。在20Cr钢表面制备了超微细磷酸锰转化涂层和硫化亚铁固体润滑涂层,在摩擦磨损试验机上对涂层标准试件的摩擦学性能进行了评价,在传动试验台上对两种涂层钢蜗杆副进行传动性能综合试验。结果表明:两种涂层均具有优良的减摩耐磨性能,涂层钢蜗杆副较之未涂层钢蜗杆副缩短了跑合时间,具有更高的传动效率和更优良的抗胶合能力。上述研究为实现蜗杆传动以钢蜗轮替代青铜蜗轮的目标打下了基础,具有一定的理论意义和工程实用价值。 相似文献
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通过对钢蜗杆副传动性能的试验,分析研究了蜗杆副的齿面跑合机理。试验结果表明,齿面跑合对钢蜗杆副传动性能影响很大。为钢蜗杆副传动的推广与应用提供了可靠的依据。 相似文献
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第三讲蜗杆传动的润滑§3—1 啮合特点与润滑的关系蜗杆副通常用于冶金、矿山、化工,起重运输和机床等机械中,分为圆柱蜗杆,环面蜗轩,锥蜗杆几大类,每一类中又可细分。尽管种类繁多(见表3.1),但是就蜗杆副传动这一总的类型来说,它具有结构紧凑,传动,比较大,传动平稳,噪声小,蜗杆与蜗轮齿面间滑动速度较大等特点。 相似文献
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In a recent paper, the Ritz method with simple algebraic polynomials as trial functions was used to obtain an eigenvalue equation for the free vibration of a class of homogeneous solids with cavities. The method presented is here extended to the study of a class of non-homogeneous solids, in which each solid is composed of a number of isotropic layers with different material properties. The Cartesian coordinate system is used to describe the geometry of the solid which is modelled by means of a segment bounded by the yz, zx and xy orthogonal coordinate planes and by two curved surfaces which are defined by fairly general polynomial expressions in the coordinates x, y and z. The surface representing the interface between two material layers in the solid is also described by a polynomial expression in the coordinates x, y and z. In order to demonstrate the accuracy of the approach, natural frequencies are given for both a two- and three-layered spherical shell and for a homogeneous hollow cylinder, as computed using the present approach, and are compared with those obtained using an exact solution. Results are then given for a number of two- and three-layered cylinders and, to demonstrate the versatility of the approach, natural frequencies are given for a five-layered cantilevered beam with a central circular hole as well as for a number of composite solids of more general shape. 相似文献
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本文以某些积算和双笔记录仪产品为例说明由于仪表功能设计的不合理或选型不当,影响了仪表的正常使用,制造厂和用户应关注这类问题。 相似文献
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通过分析膨胀套在实际使用产生滑移受阻现象、卡死现象原因的实质,并在分析产生问题原因的基础上提出了改进措施即:增加导向机构。 相似文献
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设计了磨粉机快辊轴承座的加工工艺和具体的工装夹具.利用卧式加工中心加工磨粉机快辊轴承座,辅以能够高效快速夹紧的夹具,既可以保证加工精度,又能够提高加工效率. 相似文献
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针对目前市场对工业设计人才的需求,本文论述了我校在工业设计教育方面的改革措施,着重介绍了我校工业设计教育在软件和硬件方面所进行的一系列的改革。 相似文献
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Modern methods of implementation of the rule of positive gradient of mechanical properties are considered; this rule was formulated by I.V. Kragelskii and its application serves to minimize the friction and wear of solids. The given methods include the application of coatings with the method of finishing antifricton abrasion-free treatment; application of new metal-cladding lubricating materials; and creation of a nanostructural state of the surface iron nitride layer by nitriding steel with a positive gradient of hardness normal to the surface. 相似文献
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一种涡旋压缩机径向随变机构的设计 总被引:1,自引:0,他引:1
详细介绍了运用随变原理设计的一种新型径向密封机构的结构特点,工作原理及主要参数的确定方法,该机构可补偿由于涡旋体加工精度不高而造成的功率损失,适用于涡旋压缩机的批量生产。 相似文献