Linear friction welding device

The invention discloses a linear friction welding device. The linear friction welding device comprises a single-cam module, a double-cam module, a driving module, a feeding module and a base; the front end of the base is fixedly connected with the feeding module; the feeding module is hinged with the single-cam module; the double-cam module is arranged on the back side of the single-cam module; the driving module is arranged on the left side of the base; the driving module drives the single-cam module and the double-cam module through a first driving synchronous belt A and a second driving synchronous belt B ; and the single-cam module and the double-cam module are fixedly connected with the base. The linear friction welding device has the following advantages: the single-cam module drivesworkpieces to be welded to perform an up-down reciprocating motion; the double-cam module drives the workpieces to be welded to perform a left-right reciprocating motion; and under the condition of identical welded parts, the needed driving force is greatly reduced.