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在机床制造中,检测机床相互位置精度用的大型直角尺自身检定是经常遇到的。尤其当直角尺横切面的形状选择不当时,直角尺易于变形,因而必须修复和检定。在高精度的直角尺检定中,由于难于得到更高精度的标准直角尺,因此用三直角尺进行组合测量是比较好的方法。通常所用三直角尺互检法的缺点在于它把安放直角尺的平板视为理想平面,而不考
In the manufacture of machine tools, large-scale square-foot self-tests for detecting the mutual accuracy of machine tools are often encountered. In particular, when the shape of the transverse ruler is not properly selected, the rectangular ruler tends to deform and must be repaired and verified. In high-precision square ruler test, because it is difficult to obtain a more accurate standard rectangular ruler, so the three square ruler combined measurement is a better method. The disadvantage of the commonly used trigonometric cross-checking method is that it treats the flat plate at a right angle as an ideal plane without reference