Construction And Application Of Digital Twin Model For Motor Assembly Line

With the deep integration of industrialization and informatization,discrete manufacturing has become increasingly automated,digital,and intelligent.However,due to the influence of technology,capital,and skill level of workers,the current digital level of discrete manufacturing is relatively low.In order to study the process of digitalization of discrete manufacturing,the motor assembly line of Industrial Engineering Automation Assembly Laboratory was taken as the research object,and the construction process of its digital twin model is described.The construction angle of the digital twin model is mainly divided into two parts.The first aspect is to build a three-dimensional visual digital twin model for the physical motor assembly line using simulation software such as Blender and Catia.The three-dimensional visual digital twin model is consistent with the operating state of the physical motor assembly line.The operating status includes the quantity status of raw materials,work in progress,and finished products,the equipment operating status,and the service life of the equipment.It also includes the human behaviors related to the assembly workers and the fatigue analysis of various parts of the human body.Data is collected and transmitted between the physical and virtual devices through sensors,cameras and other equipments.Another aspect is to establish a validate and optimize digital twin model using Arena simulation software.This model can verify the estimated completion time of processing tasks and the problems that may occur in the production process by reading the basic data of the physical motor assembly line.In addition,the planned production plan can be verified and optimized.The innovation of the digital twin model is to add human research in the research process,and analyze the fatigue of people in the operation process from the perspective of human factors engineering.The applications of digital twins mentioned in the literature are biased towards highly automated companies,but not for companies that remain stuck in manual assembly operations.Therefore the realization of this model provides a reference for the application of digital twin in discrete manufacturing,and promotes the digitalization process of discrete manufacturing.