共查询到19条相似文献,搜索用时 78 毫秒
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高速铣床的主轴系统和铣刀刀夹装置的优劣直接影响零件的加工质量。介绍国外高速铣床主轴系统及所对应的铣刀夹持装置 ,并对它们的特性进行研究和分析 相似文献
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国内数控机床用电主轴系统的发展 总被引:1,自引:0,他引:1
徐同申 《世界制造技术与装备市场》2004,(1):40-41
一、概述 众所周知,高速主轴系统历来就是数控机床三大高新技术之一(高速主轴、数控系统、进给驱动)。随着数控技术及切削刀具的飞跃发展,越来越多的机械制造装备都在不断地向高速、高精、高效、高智能化发展,内装式电主轴单元已成为最能适宜上述高性能工况的数控机床核心功能部件之一。尤其是在多轴联动、多面体加工、并联机床、复合加工机床等诸多先进产品中,内装式电主轴单元的优异特点是其他类型主轴单元不能替代的。 相似文献
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《世界制造技术与装备市场》2002,(4):75-75
中法合作生产的2台V22500B三坐标双主轴高速数控龙门铣床是六二五所和法国FOREST-LINE公司合作为西安飞机工业公司生产的。2001年7月,六二五所与这家法国公司携手合作,在有5家国际著名数控机床厂商参与的西飞公司重点型号技术改造项目竞标中一举中 相似文献
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高速主轴系统轴上零件的连接技术分析 总被引:1,自引:0,他引:1
介绍了一种高速主轴系统轴上零件定位与扭矩传递结构,文中阐述了该结构特点和设计计算方法,通过设计实例,验证其设计计算的合理性。 相似文献
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全液压铣刨机铣刨系统速度刚度问题研究 总被引:3,自引:0,他引:3
为提高全液压铣刨机铣刨鼓切削速度稳定性,采用理论分析与试验相结合的方法,对影响铣刨鼓切削速度稳定性的因素及提高铣刨鼓切削速度稳定性的方法进行了研究.指出铣刨液压系统的速度刚度是影响铣刨鼓切削速度稳定性的重要因素,采用高性能元件、加大液压马达排量和合理配置液压元件的工作点是提高液压系统速度刚度的重要措施,其中液压系统的速度刚度与液压马达排量的平方呈正比关系. 相似文献
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Effect of tool stiffness upon tool wear in high spindle speed milling using small ball end mill 总被引:1,自引:0,他引:1
Longer tool life can be tentatively achieved at a higher feed rate using a small ball end mill in high spindle speed milling (over several tens of thousands of revolutions per minute), although the mechanism by which tool life is improved has not yet been clarified. In the present paper, the mechanism of tool wear is investigated with respect to the deviation in cutting force and the deflection of a ball end mill with two cutting edges. The vector loci of the cutting forces are shown to correlate strongly with wear on both cutting edges of ball end mills having various tool stiffnesses related to the tool length. The results clarified that tool life can be prolonged by reducing tool stiffness, because the cutting forces are balanced, resulting in even tool wear on both cutting edges as tool stiffness is lowered to almost the breakage limit of the end mill. A ball end mill with an optimal tool length showed significant improvement in tool life in the milling of forging die models. 相似文献
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以数控铣床主轴系统为研究对象,应用UG对其进行三维建模。ADAMS构建多刚体虚拟样机模型,引入Hertz接触理论,对啮合齿轮进行动态仿真和齿面接触应力分析。在ANSYS中进行主轴的静力学分析,在主轴系统刚体受力分析的基础上,将主轴系统转为柔性体,在ADAMS中计算主轴系统前18阶模态,建立主轴系统的柔性体虚拟样机模型。计算齿轮的刚柔耦合的啮合力,与刚体受力进行比较后发现结果偏差不大,同时ANSYS对主轴进行了动力学分析,找出其结构薄弱环节。 相似文献
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Il-Hae Kim 《Journal of Mechanical Science and Technology》2008,22(5):914-923
In this paper, a 4-electrode cylindrical capacitance displacement sensor (CCDS) is presented as an indirect force sensor for
a high speed milling spindle. A rotor-bar system for the magnetic exciter is designed to investigate the tool deflection with
respect to the applied cutting force. To extract the deflection signal from the CCDS, the dynamic orbital motion at each rotating
speed of spindle is predetermined and then subtracted from the CCDS signal. The CCDS signal is also used as a reference sync
signal. The rotor-bar system is designed so that the rotor affects the tool-spindle dynamics only as an added mass but does
not contribute to the bending property. The additional effect of the rotor mass in the exciter setup is compensated for by
an experimental modeling. The cutting force can be estimated by using modified CCDS signals and FRF. Cutting experiments are
conducted to show reliable performances of the proposed approach by high speed machining applications. 相似文献
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数控机床进给速度控制分析 总被引:1,自引:0,他引:1
常晓俊 《机械工程与自动化》2003,(1):29-30
分析了数控机床的进给速度控制方式及具体控制方法,得出数控机床进给速度控制是按工艺要求加工出合格零件的必要手段。 相似文献