Positioning module capable of being quickly replaced

The utility model discloses a positioning module capable of being replaced quickly. The utility model belongs to the technical field of machining, the key points of the technical scheme of the utilitymodel are as follows: the module comprises a rotary fastener and a fixed fastener arranged below the rotary fastener, the fixed fastener is arranged on a second base panel and a second base bottom plate and is a fixed module part, and the rotary fastener can be assembled on a first base panel and a first base bottom plate and is a movable module part. In the using process, the moving module is combined with the fixed module; a boss at the end part of the rotary fastener is arranged in the cross-shaped clamping groove of the fixed fastener; after the placement in place, the operation handle isrotated for locking connection; otherwise, the locking structure is loosened, in the locking process of the mechanism, the upper surfaces of the four bosses of the rotary fastener and the lower surface of the clamping groove