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The Research of Sheet Springback Control and Compensation Based on CAE Simulation and Reverse Measuring

Author: ZouFuQun
Tutor: ChengSiYuan
School: Guangdong University of Technology
Course: Mechanical Design
Keywords: Rebound Mold compensation Reverse measurement Springback simulation
CLC: TG386
Type: Master's thesis
Year: 2011
Downloads: 72
Quote: 0
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Abstract


Rebound Cold Drawing inevitable physical phenomenon , it directly affects the forming precision and surface quality of the stampings . When the rebound quantity exceeds the permissible error range , forming defects , which brought great difficulties to the design of the mold . Traditional solutions in the field constantly repair mode , test mode to optimize the mold surface shape , the whole process is time consuming . If we can know in advance the amount of springback before mold manufacturing , thus guiding the mold surface modifications , you can greatly reduce the number of test mode , and improve production efficiency . This article is based on research in this context CAE simulation and reverse measurement results based on real die face compensation method . The proposed the the rebound detection method based on inverse measurement techniques . Finite element is a widely used in numerical simulation of metal forming simulation , the method can be used for sheet metal springback prediction has been confirmed . This paper introduces the basic theory of the springback simulation , and discuss the factors affecting springback simulation , analysis the DYNAFORM Software springback simulation application methods and steps . The compensation for the mold surface , to quickly and accurately obtain the amount of springback of the part is very important. In this paper, the sheet metal of the resilience test the introduction of computer-aided detection technology . Combine the functions of computer-aided detection software Geomagic Qualify , springback of sheet metal from a number of aspects to be assessed . For the modification of the mold surface , the introduction of the automatic compensation technique . It has a very strong ability to modify , without redesigning to achieve the type of surface shape automatically modify , to provide enterprises with the mold surface modification based on CAE simulation and tryout predict springback . View of the springback simulation accuracy is also not ideal , we also studied the reverse measurement based on real die face compensation method . It is based on the deviation between the actual the stampings digital model and design model , the establishment of the springback compensation model and the compensation model based automatic compensation of the mold surface . A certain extent on the method bypasses the springback simulation can not accurately calculate the problems and improve the accuracy of the parts forming .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Cold stamping process
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