Novel necking machine

The utility model discloses a novel necking machine, which belongs to the field of metal tube necking and comprises a machine body, a mounting plate fixedly mounted on one side of the machine body, a second cylinder fixedly mounted on the mounting plate, a necking die fixedly mounted on the upper portion of the second cylinder, a transmission part arranged in the middle of the machine body, and a plurality of clamps fixedly mounted on the transmission part. A steel pipe is clamped on the inner side of each clamp, and a brush guiding mechanism is fixedly installed at one end of the machine body and can achieve the effects that lubricating oil is pumped through work of an oil pump and falls onto a smearing brush, the smearing brush absorbs the lubricating oil, then a first air cylinder moves upwards to drive an installation sleeve on one side to move upwards, and when the installation sleeve moves, the smearing brush on the inner side is driven to move upwards; therefore, the smearing brush can evenly smear oil