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利用激光进行线材及棒材直径测量,遇到的共同问题就是测量精度问题,这是决定测量仪使用价值的主要技术参数。我们在研制 JC-1激光扫描测径仪的基础上,来讨论扫描法影响测量精度的因素。目前,国内已有九个单位分别研制出好几种线径测量仪器,其主要技术指标大致相近,测量范围约为0.2—32毫米,测量精度约在±.01—0.05毫米,读数精度都是0.01毫米(数字显示)。这些仪器取得原始信息的原理如图1。He—Ne激光经反光镜及透镜厶后,进入测区。当同步电机带动反光镜旋转时,激光束在测区平行扫描,遇到测件时被挡住,形
The common problem encountered with lasers for wire rod and bar diameter measurement is the measurement accuracy problem, which is the main technical parameter that determines the value of the meter. We developed the JC-1 laser scanning diameter measuring instrument, based on the discussion of scanning methods affect the measurement accuracy of the factors. At present, there are already nine units in China that have developed several kinds of diameter measuring instruments. The main technical indexes are roughly the same. The measurement range is about 0.2-32 mm and the measuring accuracy is about ± .01-0.05 mm. The reading accuracy is 0.01 mm (digital display). The principle of these devices to obtain the original information is shown in Figure 1. He-Ne laser through the mirror and lens 厶, into the test area. When the synchronous motor drives the mirror to rotate, the laser beam is scanned in parallel in the measuring area and is blocked when it encounters the measuring piece