镗工技术等级标准一、职业定义操作镗床，按技术要求对工件进行切削加工。二、适用范围各种镗体的操作、调整、保养。

For the actual production of many companies in order to save costs, most of the use of homemade single-edged boring tool for processing the situation is analysed, pointing out the defects of single-edged cutting, and based on the actual processing experience to produce a multi-boring disc, improve the processing efficiency and save manufacturing costs.