A broaching device comprising: a puller head (132, 134) adapted to hold a tip portion of a broach, and supported in a horizontally movable manner; a retriever head (133, 135) adapted to hold a base end portion of the broach, and supported in a horizontally movable manner; wherein the broaching device includes a first broaching machine and a second broaching machine arranged parallel to an upper portion of a frame, and positioned so as to horizontally face in a 180-degree opposite direction, the puller head (132, 134) includes a first puller head disposed in the first broaching machine and a second puller head disposed in the second broaching machine, the retriever head (133, 135) includes a first retriever head disposed in the first broaching machine and second retriever head disposed in the second broaching machine, the first puller head and the first retriever head are arranged on a straight line, and the second puller head and the second retriever head are arranged on a straight line, and the broaching device comprises a broach moving device (113, 114) configured to turn the broach by 180 degrees in the horizontal direction to deliver the broach between the first puller heads and the second puller heads, characterized in that the broaching device comprises a first electric motor (136, 140) capable of moving the puller head (132, 134), a second electric motor (138, 142) capable of moving the retriever head (133, 135); and a control device adapted to enable the puller head (132, 134) and the retriever head (133, 135) to be synchronized with each other and to move at a fixed speed by controlling the first electric motor (136, 140) and the second electric motor (138, 142). a puller head (132, 134) adapted to hold a tip portion of a broach, and supported in a horizontally movable manner; a retriever head (133, 135) adapted to hold a base end portion of the broach, and supported in a horizontally movable manner; wherein the broaching device includes a first broaching machine and a second broaching machine arranged parallel to an upper portion of a frame, and positioned so as to horizontally face in a 180-degree opposite direction, the puller head (132, 134) includes a first puller head disposed in the first broaching machine and a second puller head disposed in the second broaching machine, the retriever head (133, 135) includes a first retriever head disposed in the first broaching machine and second retriever head disposed in the second broaching machine, the first puller head and the first retriever head are arranged on a straight line, and the second puller head and the second retriever head are arranged on a straight line, and the broaching device comprises a broach moving device (113, 114) configured to turn the broach by 180 degrees in the horizontal direction to deliver the broach between the first puller heads and the second puller heads, characterized in that the broaching device comprises a first electric motor (136, 140) capable of moving the puller head (132, 134), a second electric motor (138, 142) capable of moving the retriever head (133, 135); and a control device adapted to enable the puller head (132, 134) and the retriever head (133, 135) to be synchronized with each other and to move at a fixed speed by controlling the first electric motor (136, 140) and the second electric motor (138, 142).