| 摘要 |
The present invention relates to a cartridge-type micro boring bar. The cartridge-type micro boring bar comprises: a main body; a first adjusting member one side of which is fixed to a lower portion of the main body through the use of a fixing member; a fixing pin inserted into the main body and the first adjusting member so as to pass through the main body and the first adjusting member, thereby fixing the first adjusting member; a cutting tip fixed to a lower end of the first adjusting member through the use of a top fixing bolt; and a second adjusting member inserted into an adjusting hole formed in a lower end of the main body in a screw-coupling manner, the second adjusting member including a taper having a radius gradually decreasing from one side toward the other side thereof. The second adjusting member is inserted so that the taper contacts one side surface of the first adjusting member. Further, when the second adjusting member is rotated, a lower portion of the first adjusting member is bent around the fixing pin. According to the present invention, if an insertion hole for a bolt is formed when parts are assembled through a boring bar, the bending of an adjusting body may be adjusted using an adjusting bar so as to adjust the radius of the insertion hole. Further, chips generated when the insertion hole is formed may be easily discharged to the outside by means of a chip discharge groove. |
