The invention belongs to the technical field of industrial tools, and particularly relates to a staggered edge
drill reamer for composite hole
machining. The staggered edge
drill reamer comprises a
drill rod, a
tail handle and an adjusting device. According to the technical scheme, the adjusting device is arranged at the right end of the drill rod, and comprises a shell I, and a parallel bearing is fixedly mounted on the left side of the shell I; a shell II is fixedly installed on the left side of the parallel bearing, and a spacing ring is fixedly installed on the right side of the shell I; and the
tail handle is fixedly installed on the right side of the spacing ring, and a mandrel is fixedly arranged on the left side of the
tail handle, and installed on the inner walls of the shell I and the shell II. The invention has the beneficial effects that chips generated on a
metal processing surface through ab auxiliary
cutting edge and an arc edge are guided to a
chip guide groove througha
chip dividing groove, and the chips of a main
cutting edge are guided to a
chip groove through the chip guide groove; a roller is attached to the
metal surface in the hole, and the
metal surface inthe hole is rolled through the roller, so that the protrusion part of the surface is pressed into the concave part; and the
smooth surface is machined in the hole, and the super mirror
machining and
polishing effects are achieved.