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基于无瞬心包络法的采油螺杆泵螺杆成型铣刀设计

Keywords: 螺杆,螺旋曲面,无瞬心包络,成型铣刀,刀刃,廓形方程

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Abstract:

研究加工采油螺杆泵螺杆成型铣刀的设计方法.通过对采油螺杆泵螺杆形状和工作原理的分析,建立螺杆螺旋面方程.利用无瞬心包络法和成型铣刀廓形设计原理,从成型铣刀与螺杆工件的相对运动关系出发,推导出具有恒定后角的铣刀刀刃廓形方程.在此基础上设计出加工螺杆的专用成型铣刀.铣刀采用刀头与刀架分离结构,降低了铣刀的生产成本,延长了铣刀的使用寿命.该方法设计的铣刀适用于在普通螺杆铣床上加工采油螺杆泵的螺杆,不仅降低了螺杆的加工成本,而且提高了螺杆的加工精度和效率.

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