Research On Design And Development Of The Car Door Automatic Feeding System

In automobile production,the precision of the work of the door coating directly affects the quality of the vehicle.Currently,the centralized station or high precision container is the common method for high precision.But this method can lead to lower productivity or higher production cost.In order to solve the problem of long production cycle time as well as high production cost,this paper designs a set of car door automatic feeding system based on machine vision.The practice shows that the system can ensure accurate and quick gluing for the door,and meanwhile,the system is suitable for a variety of door models to reduce the production cost to a great extend.The main research contents are as follows:Firstly,the paper studies the process of the loading the door for production,and determines the systematic design solution.Using machine vision instead of medium and high precision frame can increase productivity and reduce the cost.Secondly,the hardware system is determined.According to the production requirement,the hardware system consist mainly of camera,lens,light source,industrial robot,container,vacuum generator,laser sensor,etc.,and the selection for every part is completed.Thirdly,the design and construction of software system are completed.Though the study on the characteristics of the door of the door,the feature point of the door handle hole was found and was obvious,and the door handle was identified as the feature point of system identification and positioning.The characteristic shape rule is used to locate the algorithm using the rectangular box,so as to find out the offset.The software construction mainly includes the software construction platform and the programming language,the software login interface design,the software main interface design and the software and industrial machine communication design,etc.The design of software main interface mainly includes the addition of each algorithm tool in software and the design of image display window.The communication protocol selects the TCP/IP protocol based on the protocols applicable to industrial robots.Fourthly,testing the whole system.The experimental variables mainly include X direction,Y direction and angle direction.The performance of the software system and the accuracy of the overall system are tested by changing the position of the single variable and changing the position of the multivariable.Ensure accurate and quick positioning,and the door gluing.