Design and Verification of 60D Profile Facing Cutter of Rail Milling Train
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摘要:
钢轨铣磨是一种有效修复钢轨廓形、消除轨面伤损的作业方法。 铣磨对钢轨廓形的修复是通过将刀粒根据目标钢轨廓形排列在刀盘上，再由铣磨车驱动刀盘沿轨面纵向铣削来实现的。钢轨铣磨的廓形依赖于铣磨刀盘上刀粒的排列布局。根据逆向工程设计原理，采用 3D 扫描技术还原铣磨车刀盘及其刀粒组合特征；结合钢轨打磨 60D 设计廓形对刀粒在刀盘上的布局进行调整；之后对该刀粒布局与 60D 廓形的贴合度进行验证。 对设计的 60D 廓形刀盘进行现场测试，结果显示该刀盘铣磨效果较好，轨头顶部-10°~+10°单次铣磨量在 1 mm 左右，铣磨误差小于 0.3 mm。
Abstract:
Rail milling is an effective way to repair rail profile and eliminate rail surface damage. The repairment of rail profile through milling is realized by arranging the cutter grains on the facing cutter according to target rail profile, and then driving the rail milling train to mill longitudinally along rail surface. The profile of rail milling depends on the arrangement and layout of the cutter grains. The characteristics of facing cutter and its combination of cutter grains are restored using 3D scanning technology based on reverse engineering; The layout of cutter grains is adjusted according to the designed 60D rail profile and its fitting degree is verified. Finally, the field test of the designed 60D profile facing cutter shows that the single milling amount is about 1 mm in the range of -10°~+10° at the top of the rail head, and the milling error is less than 0.3 mm.