Press-fit tool and press-fit process for centrally-mounted motor gear set bushing

The invention discloses a press-fit tool and process for a centrally-arranged motor gear set lining. The press-fit tool comprises an upper pressing head assembly and a lower pressing head assembly. A first conical head is arranged at the lower end part of the upper pressure head assembly; a second conical head is arranged at the upper end part of the lower pressure head assembly; a horizontal crimping part is arranged at the taper angle of each of the first conical head and the second conical head; a circle of annular groove is further formed in the upper surface of the lower pressing head assembly and located on the annular side of the second conical head; the second conical head and the annular groove form a containing space for a gear to be subjected to press-fit, and a press-fit horn mouth is formed when the first conical head and the second conical head are in relative contact and press-fit. According to the gear assembly subjected to press-fit through the press-fit tool and the process, on the premise t