共查询到20条相似文献,搜索用时 15 毫秒
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轴承在市场上有着广泛的应用,为了提高生产效率,研发轴承套圈双主轴车削中心数控系统符合当前市场需求。根据多年工作经验,通过参阅大量文献,研发了轴承套圈双主轴车削中心数控系统,设计了机械本体、系统结构及机床面板等,为提高生产效率,保证生产质量提供了技术支持,得出了有益结论。 相似文献
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根据轮毂轴承套圈的产品特点,设计了闭武精锻成形工艺方案.并通过Deform-3D对成形过程进行了数值模拟,分析了闭式锻造过程中金属的变形规律.数值模拟结果为轴承套圈闭式锻造工艺与模具设计提供了有效参考. 相似文献
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Metrology in production engineering must be fast, accurate, robust and automated, and ideally integrated into the production line. In many respects, optical methods seem to fulfil these requirements. Although optical methods have a long tradition in dimensional metrology, the rapid progress in the development of optoelectronic components and availability of increased computational power makes many new technical approaches possible. This paper provides a technical overview of the optical methods available for dimensional metrology. Methods for the measurement of length, angle, surface form and spatial co-ordinates are described. The paper summarises both the metrological characteristics and the technical limitations of the methods. Furthermore, it presents some new and promising approaches that, in the future, may play an important role in dimensional metrology for production. 相似文献
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To solve current industrial problems, manufacturers need to supply service rather than materialized products to consumers. We propose a novel engineering paradigm to deal with services, service engineering. We define services as a state change. A service model consists of three sub-models: scope model, view model and flow model. A computer-aided design tool, called Service Explorer, is developed to represent a network of the parameters and determines the influence weight one another. As the result, we verify the usefulness of the design tool. 相似文献
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Distortion minimization of disks for gear manufacture 总被引:1,自引:0,他引:1
Ekkard Brinksmeier Thomas Lübben Udo Fritsching Chengsong Cui Rüdiger Rentsch Jens Sölter 《International Journal of Machine Tools and Manufacture》2011,51(4):331-338
In order to minimize shape deviations in hardening of gear wheels, all production steps in the manufacture of disks made of SAE 5120 prior to heat-treatment were analyzed by means of design of experiments (DoE). The influence of hardenability, pre-heat treatment, forging temperature, and feed rate and partition of material removal in cutting on the distortion of disks were investigated. Standard case hardening of the disks led to a characteristic shape change called “dishing”. The statistical analysis of the test results has proven that dishing of disks is mainly affected by the partition of the material removal in the considered case. In additional experiments dishing could be eliminated (on average) by an optimized partition of the material removal. However, results from experiments with spray-formed disks and with disks using a different forming strategy imply that the material flow combined with material inhomogeneities are the physical causes for dishing rather than the partition of material removal. 相似文献
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通过对 2 0 Cr Mn Ti中厚板淬火、淬火变形的研究 ,制订了新的工艺方案 ,解决了该类产品生产中的一些常见的热处理淬火硬度低及变形大的问题 相似文献
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表面工程与再制造工程的进展 总被引:19,自引:3,他引:19
阐述了表面工程的定义、特点以及在生产实践中的应用,指出了表面工程在21世纪的发展方向一纳米表面工程和复合表面工程。介绍了再制造工程的概念、组成与作用,并指出再制造工程在我国具有广阔的应用前景。 相似文献
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Jenq-Shyong Chen Kwan-Wen Chen 《International Journal of Machine Tools and Manufacture》2005,45(12-13):1487-1493
Angular contact ball bearings are the most popular bearing type used in the high speed spindle for machining centers. Because the bearing load is increased rapidly with the raised spindle speed due to the centrifugal force and temperature raise, proper initial preload and especially operating-induced load control of the angular ball bearing is important to the rigidity, accuracy and life of the spindle. The bearing layout, preload mechanism an on-line load bearing control are discussed in this paper. The management of the centrifugal force and thermally-induced bearing loads is especially emphasized. An active bearing load monitoring and control mechanism that consists of an integrated strain-gage load cells and piezoelectric actuators has been developed and tested. This active control and monitoring mechanism on-line adjusts the bearing load according the cutting conditions. Experiments were conducted to identify the proper initial bearing preload range. Optimal preload for the lowest bearing temperature raise existed for a specified spindle speed. The optimum preload, however, should be raised when the operational speed is increased. 相似文献
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罗玉军 《锻压装备与制造技术》2007,42(2):35-37
针对C41—400型空气锤由于传动系统故障而导致电动机损坏的问题,通常的改进方案是增加一级V带传动,但由于对改造中的支承设计不合理而失败的情况也时有发生。本文总结了成功的改造经验,指出改造中的关键问题是带轮一齿轮轴的支承设计。将前后两支承设计为一个整体轴承座,充分利用原电动机安装底座的有效长度,最大限度地缩短了轴的悬伸量,提高了轴承座与底座的螺纹联接强度。 相似文献
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