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半径样板用万工显检定效率低,眼睛容易疲劳;用极限校对样板检定,会使校对样板磨损报废;用投影极限放大图又必须要有预先刻划好的标准圆弧图样。我们采用了绘制极坐标式放大图的方法检定半径样板,避免了上述问题,效果良好。具体做法是,在我厂现有的JTT560型投影仪
The radius of the template with the million workers was verified low efficiency, easy eye fatigue; with proof proof proof test will make scrap proofing proofing scrap; with projection limit magnification must have a pre-scored standard arc pattern. We use the method of drawing polar coordinate magnification test radius model, to avoid the above problems, the effect is good. The specific approach is, in our factory existing JTT560 projector