Selective laser sintering (SLS) powder spreading device

The invention relates to a selective laser sintering (SLS) powder spreading device, belongs to the technical field of SLS, and provides the SLS powder spreading device which is simple in structure, and capable of sensing warping deformation during part forming to remind an operator to adjust process parameters and ensure product quality. The SLS powder spreading device is characterized in that a roller bracket is mounted on guide rails in a sliding manner; a roller is mounted on the roller bracket; a roller driving motor is arranged on one side of the roller bracket, and is connected with the roller; a chain wheel is arranged on the other side of the roller bracket, and connected with a bracket driving motor via a chain; and an elastic deformation sensing device is arranged between the roller bracket and the guide rails, mounted in the roller bracket and connected with a control system. The SLS powder spreading device is widely used in the SLS technology.