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近代工业的发展,对加工零件的形位精度要求越来越高了,有些零件的尺寸公差已达到零点几微米。为了减少圆度对尺寸的影响,一般要求圆度公差比相关尺寸公差严4～5倍。因此,提高公差要求后,圆度会变成关键的要素。为了满足对圆度计量的更高要求,国内、外已生产了各种型号的圆度仪。因此,如何根据被测对象,正确地选用仪器,对用
The development of modern industry, the processing of parts shaped accuracy requirements are getting higher and higher, and some parts of the size tolerance has reached a few tenths of microns. In order to reduce the impact of roundness on the size, generally require roundness tolerance than the relevant dimensional tolerance strictly 4 to 5 times. As a result, roundness can become a key element when tolerance requirements are raised. In order to meet the higher requirements of the roundness measurement, at home and abroad have produced various types of roundness meter. Therefore, according to the measured object, the correct choice of equipment, right