Jig frame for ship

The invention belongs to the technical field of ship construction, and discloses a ship jig frame which comprises a jig frame body, jig frame ends, connecting assemblies and fixing mechanisms. The jig frame body is arc-shaped, and the inner concave side is used for being attached to an aluminum alloy sheet body; the jig frame end is arranged on the edge of the end of the jig frame body, and the edge of the aluminum alloy sheet body is attached to the jig frame end. The connecting assembly is arranged on the jig frame body and is detachably connected with the jig frame end part; the fixing assembly comprises a first fixing assembly arranged on the jig frame body and a second fixing assembly arranged at the end of the jig frame, and the first fixing assembly and the second fixing assembly are both fixedly connected with the aluminum alloy sheet body. When the jig frame for the ship is used, the constraint force at the edge position of the aluminum alloy workpiece can be kept unchanged after the aluminum alloy w