Workpiece fixing and clamping device based on mechanical numerical control machining

The utility model relates to the field of clamping devices, in particular to a workpiece fixing and clamping device based on mechanical numerical control machining, which comprises a clamping component and an angle adjusting component. The supporting plate a is vertically arranged at the end part of the bottom plate; the sliding plate is slidably arranged on the bottom plate; the supporting plate b is arranged on the sliding plate; the power push-pull device is arranged on the supporting plate a, and the telescopic end of the power push-pull device is connected with the supporting plate b; the cylinder body is arranged on the supporting plate b; the clamping plate is vertically and rotatably arranged on the end face of the barrel; two groups of clamping assemblies are arranged; two ends of the supporting rod are rotationally connected with the supporting plate b and the clamping plate; the worm gear is arranged on the supporting rod; the worm is vertically and rotatably arranged on the inner circumferential w