Clamping device for numerical control machining and clamping method

The invention discloses a clamping device for numerical control machining and a clamping method. The clamping device comprises a bottom plate, wherein two sets of supporting plates are fixedly connected to the outer wall of the top of the bottom plate; threaded holes distributed at equal intervals are arranged in the outer wall of the top of the bottom plate; fixed screws are in threaded connection with the interiors of the threaded holes; control panels are fixedly connected to the outer walls of one sides of the supporting plates; processors are arranged in the control panels; first motors are fixedly connected to the outer walls of one sides of the supporting plates; first connecting plates are fixedly connected to one ends of output shafts of the first motors; and fixed plates are fixedly connected to the outer walls of one sides of the first connecting plates. According to the clamping device and the clamping method, regular parts can be axially fixed, a fixed point does not need to be found in the fixin