Which methods are specifically used to improve the assembly accuracy of the lignite dryer? Can be divided into swap method, matching method, repair method and adjustment method four. Moreover, the same assembly accuracy, due to the use of different assembly methods, the assembly of the chain of the algorithm is not the same. According to the lignite dryer product performance requirements, structural characteristics, production forms and production conditions, etc. can be used in different ways interchangeable means that the parts are interchangeable, in the assembly process, the parts without any choice, adjustment, After installation, the assembly accuracy can be achieved. When products are interchanged and assembled, the accuracy of the assembly depends mainly on the precision of the parts. The essence is to use the control part machining error to ensure product assembly accuracy.