Clamping method and device suitable for complex track movement

The invention discloses a clamping method and device suitable for complex track movement, and the clamping mechanism adopts a pure mechanical method to realize the complex track movement of clamped materials. The clamping mechanism comprises a guide rail for guiding the mechanism to move in a complex track, an upper roller and a lower roller which are combined in pairs, a propelling cylinder and a push-pull rod for transmitting movement, a bearing frame for bearing all parts and assemblies, a chuck assembly for clamping materials, and a travel switch for controlling stop or reversing in the movement process. The guide rail is a non-linear guide rail or an arc guide rail or a simple combination of the non-linear guide rail and the arc guide rail and has a complex track characteristic, the concave arc surface of the upper roller rolls on the convex arc surface of the guide rail, the cylindrical surface of the lower roller rolls on the plane of the guide rail, the push-pull rod is connected with a piston rod of