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The Research and Experiment on Technology of Rotary Punch

Author: FuZhiQiang
Tutor: LiuJiYing
School: North China University of
Course: Mechanical Manufacturing and Automation
Keywords: Roll Forming Rolling red Kinematic characteristics Mold Design
CLC: TG386
Type: Master's thesis
Year: 2010
Downloads: 44
Quote: 0
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Abstract


Punching roll forming production has a wide range of applications , the traditional production line punching by punch , punching speed with molding speed matching is very difficult . This study is a novel roll forming production line roller punch punching process : to provide a uniform , repeating the punching mode , easy to implement and to match the speed of the roll forming production lines ; compared with traditional punching , without using a dedicated equipment , reduce investment in the production line . However, the validation of the theoretical research and experimental rolling red technology in the country is still blank , therefore , to carry out the rolling red technology research , exploring the punching characteristics , kinematic characteristics , has the significance of the theory and engineering applications . The process and the principle of rolling red , and has been validated through experiments , the main innovations are: ① for rolling red kinematics conducted the study , obtained the punch relative to the trajectory of the plate cycloid trajectory according to the to cycloid established equation relative to die in the process of rolling red punch . ( 2 ) combined with foreign specific process parameters developed roll red , laboratory equipment designed to include key components and molds . ③ on the different thickness of the plate experiments were carried out to draw the sheet material of different thicknesses require different punching gap draw punching gap is the main factor affecting the punching accuracy . ( 4 ) for punching sheet can not be divorced from the punch with a material phenomenon , come to the process of rolling red plates need to have a certain degree of tension ; need to improve the shape of the punch in order to avoid the occurrence of the belt material phenomenon , the experimental process to increase the export the roller tension punches improvements experiments show avoided strip occurs , according to experiments improved punch sectional accuracy than conventional punch sectional high precision . By roll blanking process theory to explore the rolling red molding method and experimental verification , will roll red for Chinese enterprises to apply new technology to roll forming the actual production to provide a reference .

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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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