Lifting device of auxiliary lifting tool of vertical broaching machine

The utility model discloses a lifting device of an auxiliary lifting tool of a vertical broaching machine. The lifting device of the auxiliary lifting tool of the vertical broaching machine comprises an auxiliary lifting tool module and a lifting device body, wherein the auxiliary lifting tool module comprises an oil cylinder, an auxiliary slide carriage, an auxiliary clamping tool and an oil cylinder assembly used for controlling the clamping and loosening of the auxiliary clamping tool, the lifting device body comprises a box type speed reducer, a motor is installed above the box body of the box type speed reducer, the oil cylinder in the auxiliary lifting tool module penetrates through the box body, and a rack is machined on the oil cylinder. On the box type speed reducer, a motor shaft is connected with a worm shaft, a worm wheel is matched with a worm, a gear is installed on one side of a worm-wheel shaft and is meshed with the rack of the oil cylinder in the auxiliary lifting tool module, and then the c