Blow-off device for gear machining of numerical control gear hobbing machine

The invention relates to the technical field of gear machining, in particular to a blow-off device for gear machining of a numerical control gear hobbing machine, comprising: a base, the surface of which is provided with a moving block; an arc-shaped plate is arranged on the surface of the second cover body, a stress rod is arranged on the surface of the arc-shaped plate, a storage block is fixed to the bottom of the second cover body, a second vertical rod is fixed to the bottom of the storage block, a sealing ring is fixed to the surface of the second vertical rod, and a U-shaped pipe is arranged at the bottom of the base; the open groove is formed in the surface of the moving block; the device has the beneficial effects that a gear is clamped at the end of the operation frame, a moving block can move, a groove is formed in the surface of the moving block, a swing rod is arranged in the groove, after the swing rod swings, a first cover swings to the surface of the gear, when the swing rod swings downwards,