Flexible production line based on threshold type production management

The invention provides a flexible production line based on threshold type production management, and belongs to the technical field of automobile part machining, a clamping unit of the flexible production line comprises a bottom platform located at the bottommost part of the clamping unit, and a plurality of moving wheels used for supporting the clamping unit to move on the ground are installed on the bottom face of the bottom platform; at least two sliding positioning pieces are further fixedly connected to the bottom face of the bottom platform, each sliding positioning piece comprises a cushion block of a rectangular plate-shaped structure, a ram and a guide strip plate which are arranged at intervals are fixedly connected to the bottom face of each cushion block in the length direction of the cushion block, and the rams and the guide strip plates are located at the two ends of the cushion blocks in the width direction respectively; two rows of rollers which are uniformly arranged at intervals are respecti