Assembling tool for disc motor

The utility model belongs to the field of mechanical tools and particularly discloses an assembling tool for assembling a rotor of a disc motor. The tool comprises a bottom plate, wherein the end part of one side of the bottom plate is provided with a side plate; the inner side surface of the side plate is provided with a base; the base is fixed on the side plate and the pedestal by a pressing mechanism; the end part of the other side of the pedestal is provided with a fixed plate; a support plate is arranged on the pedestal and between the side plate and the fixed plate; a guide rail is arranged between the side plate and the support plate; the guide rail is provided with a sliding plate; the sliding plate is provided with a slide bar; the slide bar is parallel to the pedestal; the end part of the slide bar is connected with a push plate; the fixed plate is provided with an oil cylinder; the lever of the oil cylinder is fixedly connected with the push plate; and the side surface of the sliding plate is provi