Complex part clamp and clamping method

The invention discloses a complex part clamp and a clamping method and relates to the field of machining. In order to solve the technical problems that in the prior art, as for a non-standard product clamp, different clamp parts still need to be specifically designed and manufactured for a non-standard product, the manufacturing cost and complexity are increased, and time consumption is increased, the technical scheme provided by the invention is that the complex part clamp comprises a primary end, a secondary end and a secondary end, the original end comprises a base provided with a through hole; the lead screw is in threaded fit with the through hole; an adsorption end is arranged at the end part of the lead screw, the adsorption end is a cube with a plane, and the plane of the adsorption end is arranged far away from the lead screw; a sucker is arranged on the plane of the adsorption end; and the auxiliary end is the same as the primary end in structure, and in the adsorption end of the auxiliary end, the