近年来,各种数显技术发展很快,数显卡尺引起了我们的注意。这种卡尺使用方便,密封性较好,精度高,价格便宜。我们用这种卡尺安装在CM6150车床刀架上作为切削加工中的主动测量,效果较好。随后,我们又把它装在活塞环外圆加工的C620车床上,结果同样令人满意,其控制精度在0.01毫米以内。我们使用的是上海量具厂制造的电子数字显示卡尺,每把290元。 In recent years, a variety of digital technology developed rapidly, digital calipers caught our attention. This caliper easy to use, better sealing, high precision, low price. We use this caliper mounted on the CM6150 lathe tool holder as an active measurement of cutting, the better. We then installed it on the C620 lathe, which was machined with a piston ring and the result was equally satisfactory with a precision of less than 0.01 mm. We are using the electronic measuring instruments manufactured by Shanghai Measuring Tool Factory, each 290 yuan.