Power-assisted bracket multi-plane machining device

The utility model provides a multi-plane machining device for a power-assisted support. The power-assisted support comprises a main support body and two branch support bodies. The positioning tool comprises a rotating seat; a supporting platform is arranged at the top of the rotating seat, a plurality of first pressing plates are arranged on the supporting platform, and the two ends of each first pressing plate tightly press the main frame body on the supporting platform through bolts; reinforcing plates in one-to-one correspondence with the two branch frame bodies are fixed to the front side wall and the rear side wall of the left side of the rotating base respectively, a clamping groove used for clamping the corresponding branch frame body is formed in the top of each reinforcing plate, a second pressing plate is arranged on the upper portion of each clamping groove, and the branch frame bodies are pressed in the clamping grooves through bolts at the two ends of the second pressing plates respectively; a li