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H.-Y. Lai D.-S. Wu 《The International Journal of Advanced Manufacturing Technology》2002,19(7):482-491
This paper presents a systematic CAD/CAM based geometric modelling technique for enhancing the manufacturing accuracy of general
straight-tooth shaper cutters. The proposed modelling technique systematically computes and improves on the shape of general
shaper cutters using a five-step procedure. In the first modelling step, the significant geometric parameters of shaper cutters
which including tooth profile, rake and clearance angles, offsets, and backlash are estimated using criteria associated with
the practical requirements and the theory of gearing, differential geometry, and motion theory. In the second modelling step,
the precise cutting-edge curve model of the shaper cutter is constructed. The theoretical involute or cycloidal cutting-edge
curve on the plane perpendicular to the motion axis of the shaper cutter is first computed and is then projected onto the
conic surface of the shaper cutter which has both the rake and the clearance angles. In the third modelling step, the convoluted
sectional profile of the diskshaped generating cutter required for producing the cuttingedge profile is established using
the theory of gearing and the relative motion relationship between the grinder and the cutter in the manufacturing process.
In the fourth modelling step, a simple procedure to obtain the profile shift coefficient of the shaper cutters from various
given process parameters is presented. Shaper cutters of various shapes can thus be designed and produced. In the last modelling
step, a practical working example for producing the precise disk-shaped generating cutter and associated shaper cutter is
presented to illustrate the effectiveness of the proposed modelling approach. The results of numerical modelling indicate
that the proposed approach is systematic, accurate and reliable for producing shaper cutters of various shapes. 相似文献
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时间敏感型网络(TSN)是目前国际产业界正在积极推动的工业通信技术。阐述了TSN技术产生的背景、工业物联网以及新制造转型中对于工业通信的需求,并从技术角度对TSN进行了全面的介绍。通过对当前国际上重要的TSN标准组织、企业、大学与研究机构的TSN实践进行分析,全面梳理了其发展简要历程、相关国际标准、实现架构与方法、开发、测试与验证、应用前景等。通过这些分析,以全局视角分析该技术对于产业的推动作用,以及未来发展趋势和在智能制造、工业互联网领域的前景,并希望国内的产业、标准化组织、大学等能够积极加强对其更为深入的研发、测试,以获得市场的先机。 相似文献
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针对国内研发的以曲柄滑块为主传动插削机构的数控插齿机,通过对比曲柄滑块机构和双曲柄-曲柄滑块两种机构的运动曲线,指出了数控插齿机主传动机构设计的方向,着重详细推导了附加转动机构的运动方程,为新型主传动机构数控插齿机的数字控制提供了技术支持. 相似文献
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CNC齿轮机床的主控方式及控制原理 总被引:4,自引:1,他引:4
介绍自行研制的齿轮机床NC系统的组成与功能。基于模块化、灵活性的思想,该CNC系统集编程、加工于一体,并可实现多轴联动控制。 相似文献
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马惟奇 《石油化工设备技术》2004,25(2):36-38
对氧化沥青装置中已使用多年的沥青成型机的动力系统、机械传动结构、仪表控制放料系统和 抽排烟系统等进行了一系列改造,改造后的沥青成型机运行平稳,安全性增加,故障率下降,并且操作简单, 操作人员劳动强度降低。 相似文献
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面齿轮的弯曲强度是影响面齿轮疲劳寿命的主要因素.提出了面齿轮齿根过渡部分为光滑曲面的一新型齿面结构,给出了应用插齿刀的齿顶圆角生成面齿轮过渡曲面的方法;建立了刀具齿顶圆角的法面方程,经坐标变换,导出了被切削面齿轮光滑过渡曲面的方程;利用数字齿面的方法,分别建立了刀具齿顶尖角和圆角两种结构所生成面齿轮的有限元模型并进行了... 相似文献
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