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随着对机械零件精度要求的增高,相应地也提高了对测量工具的要求。因此,微米级测量工具的精度,应该达到0.003～0.01毫米。但是从分析构成微米测量头总误差可知,微米级螺纹副的误差,对其精度起主要作用,它的精度参数决定了测量工具的平稳行程和寿命。微米级螺纹副的误差与螺丝和螺母(千分套筒)的螺纹误差有关。螺丝的螺纹精度是由螺纹磨床和滚丝机的本身的精度和工艺所决定的,这些设备可保证每个螺
With the increased precision of the mechanical parts, the corresponding increase in the requirements of the measuring tools. Therefore, the accuracy of micrometer measurement tools should reach 0.003 ~ 0.01 mm. However, from the analysis of the total error of the measuring head of the micrometer, it can be seen that the error of the micrometer thread pair plays a major role in the precision of the micrometer head, and its accuracy parameter determines the stable stroke and the life of the measuring tool. Micrometer thread error and the screw and nut (thousandth sleeve) thread error related. Screw thread accuracy is determined by the accuracy and technology of the thread grinder and thread rolling machine, these devices can ensure that each screw