高精度双V型导轨的研磨与检测技术

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Modern machining industry has mature technology in manufacturing double V-type rail of general precision, but it＇s hard to meet the high precision requirement of 1 560 mm lengths rails in large grating ruling machine （0. 2＂）. This paper introduced a high-precision machining program to further processing the finished double V-type rail manufactured through traditional technology, and the precision measurement of the rail straightness and parallelism. The experimental results show that the straightness of double V-type rail is less than 0.2＂ in the X and Y direction, the parallelism of vertical and level direction are less than 1＂. The experimental results meet index requirements.对于普通精度的双V型导轨，现代机床加工行业已有成熟的技术，但对于大型光栅刻划机所用1560mm导轨所要求的高精度（0．2”）仍难以满足要求。文中介绍了一种高精度加工方案，对传统加工技术制造的成品双V型导轨进一步研磨加工，并对导轨的直线度和平行度进行精密检测。实验结果表明，研磨加工后上下导轨配合的直线度误差在X和Y方向均不大于0．2”，两导轨垂直方向平行度误差与水平方向平行度误差均不大于1”，满足指标要求。