近年来,通过不断实践,我们在带刃倾角铰刀的基础上,增设了内冷却装置(附图)。冷却液经刀杆内孔,分成六股分别喷向铰刀上的六个容屑槽,使得这种铰刀更加发挥其切削效能。这种铰刀,可用外购标准机铰刀直接修磨。待用钝后,只要修磨刃倾角即可重新使用。在修磨刃倾角的同时,应磨出正前角。带正前角的铰刀,比无前角的标准铰刀切削显得轻快。加工较硬的材料时,刃倾角应为15°～25°,前角应 In recent years, through continuous practice, we have an edge cooling reamer on the basis of an additional cooling device (with photos). Coolant through the arbor within the hole, divided into six shares were jet to the reamer on the six chip trough, making this reamer to play more cutting effectiveness. This reamer can be purchased directly reamer standard reamer. To be blunt, as long as the angle of the grinding edge can be re-used. Sharpening the angle while polishing, should be worn out of the front angle. The reamer with a positive rake angle is bolder than a standard reamer without a rake angle. Machining harder materials, cutting edge angle should be 15 ° ~ 25 °, the front angle should be