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对人造金刚石钻头进行车加工时,要先夹住钻头尾部,按胎体的外径端面找正,将钻头外径车至φ45毫米,然后调头夹紧,按外径φ45找正,再加工丝扣和内径部分。钻头胎体外径和丝扣的同心度要求是比较高的,偏差不得超过0.05。在加工过程中,因为需要调头夹装,加工一个钻头需要找正两次,辅助时间长。另外,在车内径部分时,用四爪卡盘直接夹紧钻头外径部分,夹力大容易使钻头变形,夹力小则加工时不能吃刀大,
When machining a synthetic diamond drill, the tail of the drill must be clamped first, and the outside diameter of the carcass should be adjusted to φ45 mm. Then the drill should be adjusted to a diameter of 45 mm and then be clamped. Buckle and inner diameter part. Drill carcass diameter and thread concentricity requirements are relatively high, the deviation shall not exceed 0.05. In the process, because of the need to tune the folder, machining a drill need to find two positive, auxiliary time. In addition, part of the car diameter, with a four-jaw chuck directly clamp the outer diameter of the drill, the clamping force is easy to deform the drill, the clamping force is small processing can not eat a knife,