论文部分内容阅读
采用图示的铰刀(苏联作者发明证912418)加工高强度淬硬钢和有色合金等薄壁零件(壁厚≤0.15D,D为加工零件的外径)上的精密孔时,不但工效高、刀具寿命长,并且当铰刀从孔中退出时,刀齿不与加工表面相接触,从而能防止刀齿损坏和加工表面划伤。该铰刀是由刀体1、刀齿2和圆形导向滚柱4等组成。刀齿2可采用陶瓷或聚晶立方氮化硼等超硬材料制造。在刀体内刀齿2的后面开有纵向槽,将直径d=6~8mm的导向滚柱4装在纵向槽内(利用弹性夹3)。在横剖面内槽底乎面作成96°角的倾斜平面(见图)。槽
The use of pictorial reamers (USSR invention certificate 912418) processing of high-strength hardened steel and nonferrous alloy thin-walled parts (wall thickness ≤ 0.15D, D is the outer diameter of the machined parts) on the hole, not only high efficiency , The tool has a long life, and when the reamer exits the hole, the tooth does not come into contact with the machined surface, preventing damage to the tooth and scratching the machined surface. The reamer is composed of a knife body 1, a knife tooth 2 and a circular guide roller 4 and other components. Tool 2 can be ceramic or polycrystalline cubic boron nitride and other superhard materials. A longitudinal groove is formed in the back of the blade 2 in the knife body, and the guide roller 4 with the diameter d = 6 ~ 8mm is installed in the longitudinal groove (using the elastic clip 3). At the bottom of the groove, a slant plane of 96 ° is made at the bottom of the groove (see the figure). groove