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中心钻的切削部分是采用成形砂轮磨削的,传统的成形砂轮掺整器是用2～3副修整器对砂轮进行修整。用这种方法,无法在砂轮成形面的交角处形成R,因而使小规格中心钻的强度降低,影响使用寿命。加工R型中心钻时,需单独设计修整夹具,在使用中要或套更换,造成操作不便。在GB6078—75的新国家标准中,对B型中心钻的60°端外径规定了较小公差值,传统的修整器难以满足工艺要求。这里介绍一种成型砂轮修整器,适用于
The cutting part of the center drill is formed by the grinding wheel. The traditional forming wheel dresser is used to trim the grinding wheel with 2 ~ 3 dressers. In this way, R can not be formed at the corner of the grinding wheel forming surface, thereby reducing the strength of the small-sized center drill and affecting the service life. R-center machining center drilling, the need to design a separate dressing fixture, in use or set of replacement, resulting in operational inconvenience. In the new national standard of GB 6078-75, a smaller tolerance is specified for the outer diameter of the 60 ° end of a B-type center driller, which is difficult to meet with the conventional dresser. Here is a molding wheel dresser, suitable for