The utility model belongs to the technical field of
trepanning, and particularly relates to a part manufacturing
trepanning device for mechanical manufacturing, which comprises a mounting bracket and a mounting mechanism arranged above the mounting bracket, and the mounting mechanism comprises an overturning
assembly and an adjusting
assembly; the overturning
assembly comprises a supporting shaft, a
machining support, a first hydraulic rod, a fixing support, a
threaded rod, a clamping plate, a first clamping groove, a second clamping groove, a locking support, a threaded shaft and a locking block, the supporting shaft is mounted on the inner wall of the mounting support, and the
machining support is mounted at the
tail end of the supporting shaft; the fixed support stretches out and draws back to a certain degree through the first hydraulic rod and the
machining support, adjustment is conducted according to the models of machined parts so as to adapt to the parts of different heights, then the
threaded rod is rotated to ascend and descend the clamping plate, clamping work of the parts is achieved, it is guaranteed that the parts are kept stable in the
machining process, and the machining efficiency is improved. And machining errors caused by vibration or displacement are reduced.