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数控座标测量机的发展不及数控机床迅速。在50年代末期就已经出现了美国波音(Boeing)公司使用的 Stromberg Carlson 公司生产的数控测量机(参看〈ControlEngineering〉1959,№.12)。这台测量机的测量范围350×450×250毫米,精度25微米。美国本迪克斯公司也在1960年研制成功三台五座标数控测量机。这种测量机可用以检查旋转表面的内外轮廓,分辨率为25微米。但截至目前为止的数控座标测量机并不多。据1971年统计,约有25000台数控机床,而数控测量机不到100台。一方面是数控测量机的投资费用高;另一方面是测量机的利用率。对只测量一次的工件来讲,使用数控测量机是不经济的,并不比手动测量机优越。对数控座标测量机可资参考的有美国国家航空标准(NAS)971〈精密数字控制测量检验机(Measuring Inspection Machine—Precision-Numerically Controlled)〉的规定:
The development of NC coordinate measuring machine is not as fast as CNC machine tool. In the late 1950s, CNC milling machines from Stromberg Carlson (see 1959, No. 12) used by Boeing in the United States appeared. This measuring machine has a measuring range of 350 × 450 × 250 mm and an accuracy of 25 μm. The United States Beidixi company also developed in 1960 three five coordinates CNC measuring machine. This measuring machine can be used to check the inner and outer contours of the rotating surface with a resolution of 25 microns. But so far not many NC coordinate measuring machines. According to 1971 statistics, there are about 25,000 CNC machine tools, and less than 100 CNC measuring machines. On the one hand is the high cost of CNC measuring machine investment; the other is measuring machine utilization. For a workpiece that is only measured once, it is not economical to use a CNC measuring machine and it is not superior to a manual measuring machine. NC coordinate measuring machine can be referred to the United States National Aviation Standards (NAS) 971 Regulations: