Auxiliary machining device for frame shaft

The utility model relates to an auxiliary machining device for a frame shaft, belongs to the technical field of clamps, and solves the problem that in the prior art, a rigid supporting device cannot adjust the supporting force of the frame shaft. The device comprises a sleeve, a first supporting screw rod, a second supporting screw rod, a locking nut, an adjusting nut, an adsorption magnet and a spring, wherein the two ends of the sleeve are sleeved with the first supporting screw rod and the second supporting screw rod respectively; the number of the adsorption magnets is two. The locking nut is arranged on the first supporting screw in a sleeving mode, the adjusting nut is arranged on the second supporting screw in a sleeving mode, and the length of the part, extending out of the sleeve, of the second supporting screw is adjusted through the adjusting nut so that the supporting force exerted on the frame shaft by the auxiliary device can be adjusted. According to the auxiliary device, the supporting force a