共查询到20条相似文献,搜索用时 109 毫秒
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V. A. Grechishnikov Yu. E. Petukhov P. M. Pivkin V. B. Romanov E. A. Ryabov S. Yu. Yurasov O. I. Yurasova 《Russian Engineering Research》2017,37(9):821-823
Parameter specification in the trochoidal machining of a slot of constant width is considered. A formula is proposed for the displacement increment of the shaping circle as a function of the cutting depth. 相似文献
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介绍钢板铣边机采用的浮动铣削单元的主要结构,解决了铣削时由于钢板本身平面度误差影响焊接坡口一致性的难题,保证了大直缝埋弧焊管的焊缝质量。 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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机械加工中工艺系统的振动破坏了零件的加工精度。刀具与工件之间的冲击力是引起振动的主要原因之一。通过对带有三维复杂槽型的波形刃铣刀片与平前刀面铣刀片铣削力和铣削振动的对比试验、铣削力的有限元数值模拟,表明带有三维复杂槽型的波形刃铣刀片铣削力小,铣削过程中引起工艺系统的振动较平稳。可以断言,优化刀具的结构与几何参数可有效地减小铣削过程的振动现象。 相似文献
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Journal of Mechanical Science and Technology - Titanium alloys generally have problems such as sticking, large cutting force, and poor heat dissipation during the cutting process., research shows... 相似文献
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After high-speed milling of quenched steel, the surface layers are studied. 相似文献
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李继堂 《机械制造与自动化》2012,41(2):62+67
介绍一种镜面铣削加工方法,通过选择合适的机床和铣削刀具,优化加工切削参数,能够获得只有磨削或刮研所具有的加工效果.通过对镜面铣削的研究,可以寻找出一种手段,实现以铣代磨、以铣代刮,从而可以降低机械加工成本提高加工品质. 相似文献
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介绍为解决较长齿条的铣削,充分利用卧式铣床工作台的纵向行程,同时又能适用于多种型号的卧式铣床而进行的工装设计,并通过直接转动工作台纵向丝杠的简单分度法和双刀铣削显著提高生产率。 相似文献
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Multidisciplinary design optimization of a milling cutter for high-speed milling of stainless steel 总被引:1,自引:1,他引:0
Guangjun Liu Guangyu Tan Guanghui Li Yiming Kevin Rong 《The International Journal of Advanced Manufacturing Technology》2013,68(9-12):2431-2438
The milling cutter’s fracture strength is more important than its chemical stability and thermal conductivity in high-speed milling. The multidisciplinary design optimization (MDO) method is employed to optimize the fracture-resistant performance of a milling cutter in this work. An experimental study on high-speed milling of the martensitic stainless steel 0Cr13Ni4Mo is conducted. The cutting forces and cutting temperature in the milling process are measured to provide initial data for the structural optimization of the milling cutter. The mathematical models of cutting force and cutting temperature are studied. Considering that the induced stress in the milling cutter is generated by thermomechanical coupling, the thermoelastic–plastic governing equation in the milling process is introduced in this work. The sensitivity of the structural parameters to the maximum equivalent stress of the milling cutter is calculated, and the structural parameters that have the greatest effects on the maximum equivalent stress are determined as design variables for the cutters’ optimization. The MDO procedure for the cutter’s optimization consists of updating of solid model, finite element analysis of thermomechanical coupling, postprocessing, and optimization algorithm. The MDO results show that the optimized milling cutter has a better fracture-resistant performance than the initial one. The maximum deformation, overall equivalent stress, and deformation are decreased. 相似文献