Farm Machinery,Rotary Cultivator,Farm Tractor Farm Mower Farm Trailer Co.,Ltd , http://www.bossmanufacturer.com In the turning process of end-face workpieces, the following problems are often encountered: some axial dimensions play a positioning role in the assembly, which is a critical dimension and requires high machining accuracy. However, the universal measuring tool is not easy to measure directly, so it seriously restricts the improvement of product quality and efficiency. For the convenience of description, take the motor end cover as an example to illustrate this question.