Pneumatic fixing device for automobile part machining

The pneumatic fixing device for automobile part machining comprises a bottom plate and is characterized in that a first vertical plate is fixedly connected to the position, close to the side edge, of the top face of the bottom plate, a supporting mechanism is fixedly connected to the inner side wall of the first vertical plate, and a base fixedly connected with the bottom plate is arranged at the bottom of the side, away from the first vertical plate, of the supporting mechanism; a second vertical plate symmetrical to the first vertical plate is arranged on the side, away from the first vertical plate, of the base and fixedly connected with the bottom plate, a horizontally-arranged transverse plate is fixedly connected to the top of the side, away from the base, of the second vertical plate, a pressure-resistant pipe is arranged on the side, close to the second vertical plate, of the transverse plate, and an adjuster used for adjusting airflow is arranged on the top of the transverse plate. The pressure-resis