Research Of Rapid Conveying Syeterm In Hot Stamping Line Based On Multi-robots Coordination Conveying

In the current low-carbon economy,automotive is increasingly focusing on reducing energy consumption,while higher requirements for improving the safety performance of automobiles.The automobile parts manufactured by hot stamping forming are an effective way to realize the automobile lightweight and improve the safety performance of automobiles.During the hot forming process,the billet is in a high temperature state during the conveying process.The speed of conveying the beat has an important influence on the quality of the parts and the energy consumption of the equipment.The rapid delivery of the hot forming blanks puts forward higher requirements for the efficient,fast and continuous performance of the robots in the process of conveying.This paper has done the following research based on the design and testing of hot stamping line.Firstly,Based on the intelligent advanced,efficient and stable manufacturing concept,the characteristics of hot stamping process are analyzed for the need of efficient and rapid transportation.This paper presents a method called coordination conveying to solve the problem that long conveying time of static transferring..Secondly,it is designed to build the experimental platform of collaborative conveying.The application research design of the key device of the floating elastic auto reset claw in the limited coincidence distance is emphatically introduced.It increases the mechanical tolerance during the handover in the limited coincidence distance,so that the flexibility of the mechanical gripper and the material tray rack is more flexible and greatly improves the reliability of the billet handover.Finally,the implementation process of 4 kinds of collaborative conveying methods is systematically expounded.It studies the main variables that affect the cooperative transmission of beats,and analyzes the relationship between coincidence distance,delivery rhythm,cooperative speed,beat optimization,and acceleration.The results show that,the optimum effect of uniform speed coordination is most evident in the case of total distance of 4.9m,and the transmission cycle is reduced from 3.554 s to 2.094 s,and the Beat optimization reaches 41%.The transmission cycle of variable speed synergy decreases from 3.554 s to 2.502 s,and the optimized effect exceeds 30%.Compared with uniform speed synergy,the coordinated time of the variable velocity synergy increases by 64%,and the variable speed coordination can provide more abundant collaborative operation time.Taking 400 mm coincidence distance as an example,the conveyor beat is shortened to 3.25 s,the optimized time is 0.364 s,and the beat rate is up to 11.2%.The results of this study can provide a certain reference for the scientific layout of the coincidence distance of Multi-robot in the production line.