It is to control the position and size of the tool and the feeding direction of the guiding tool, so as to meet the technical requirements of the machining hole with high geometric tolerance and drilling on the inclined plane and curved surface. When the positioning accuracy of the fixture of the machined parts on the equipment is not ideal, sometimes It is also possible to deliberately change the offset of the spindle through the drill sleeve to meet the technical requirements of the machining hole position.
In addition, the drill sleeves on the individual stations of the special machine line can also serve as error-proof verification of the diameter tool, that is, the production line operator inserts the new tool into the drill sleeve hole before replacing the drill or reamer tool to verify whether it can Through this, the risk of tool diameter out of tolerance is controlled.
