Quick clamping device for machining

The utility model provides a quick clamping device for machining, which is simple in structure, low in production cost, capable of quickly clamping and applicable to different workpieces to be machined, and comprises a rack, a placing table for placing the workpieces to be machined is arranged on the rack, and a clamping device for clamping the workpieces to be machined is further arranged on the rack. The clamping device comprises a plurality of chucks, the chucks are arranged on the rack in a sliding mode in the horizontal direction and matched with one another to clamp a to-be-machined workpiece, a first driving mechanism used for driving the chucks to slide is arranged on the rack, and the clamping faces, used for clamping the to-be-machined workpiece, of the chucks are obliquely arranged. And the diameter of a virtual circle formed between the clamping surfaces of the chucks is gradually reduced from bottom to top. 本实用新型提出一种结构简单、生产成本低，能够快速夹持、适用不同待加工件的用于机械加工的快速夹紧装置，包括机架，所述机架上设置有用于置放待加工件的置放台，所述机架上还设置有用于夹持待