Abstract: A combined through-hole processing machine includes a working bed provided with two opposite and parallel slide rails on it. A deep-hole processing mechanism is provided on the working bed and includes a pair of sub-spindle heads used to clamp a deep-hole tool respectively to conduct the deep-hole processing on workpiece. A U axis feed unit is provided between the two slide rails and used to provide the feed for the movement in the long axis direction parallel to the two slide rails. A deburring mechanism is provided on the working bed and located at one end side of the deep-hole processing mechanism, which includes the corresponding two chucks and two tailstocks where the chucks are used to clamp the workpiece with the deep-hole processing already fulfilled on the deep-hole processing mechanism respectively and the tailstocks are provided to arrange the deburring tools respectively to conduct the deep-hole deburring action.

Abstract: An exchange system includes a rotating mechanism and a table base connected to the rotating mechanism to exchange two worktables of a machine tool and a positioning device. The positioning device has a first positioning member, which is a pin on a top of a machine table of the machine tool and two second positioning members, which are holes on the table base. The first positioning member is detachably connected to the second positioning member to precisely position the table base on the machine table.