久久久久综合国产精品二区_黄色三级毛片精品国产av_猛鬼三温暖在线观看免费国语版_揭秘知花凛AV在线播放_厨房征服丰满熟妇_欧美四级在线观看免费_香蕉视频网站导航_99久久全国免费观看_日韩国产综合无码一区二区_中文人妻熟妇乱又伦精品

Side hole machining is a process of drilling side holes on a workpiece. Firstly, it is necessary to select the appropriate side hole position on the workpiece and use the guiding device of the side hole machine to guide the drill bit to the correct position. Then, start the side hole machine, and the drill bit will drill side holes along the path of the guide device. During the drilling process, it is necessary to regularly check the wear of the drill bit and replace it as needed., After the side hole machining is completed, it is necessary to inspect the workpiece to ensure that the size and position of the side hole meet the requirements.