生產(chǎn)過(guò)程中沖壓拉伸開(kāi)裂、起皺影響因素及預(yù)防

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摘 要：拉伸開(kāi)裂、起皺在沖壓生產(chǎn)過(guò)程中時(shí)有發(fā)生，是產(chǎn)生沖壓廢品的主要因素，而僅靠常規(guī)檢查很難做到百分之百識(shí)別，所以沖壓開(kāi)裂、起皺的零件逃逸到下工序時(shí)有發(fā)生。故了解生產(chǎn)過(guò)程中沖壓拉伸開(kāi)裂、起皺的影響因素及如何預(yù)防便顯得尤為重要。

關(guān)鍵詞：沖壓拉伸 開(kāi)裂 起皺 模具 壓邊力 氣墊頂塊 氣墊頂桿

Influencing Factors and Prevention of Punching and Stretching Cracking and Wrinkling in Production Process

Lu Qingguo，Ren Linbao，Xu Dian

Abstract：Tensile cracking and wrinkling occur from time to time in the stamping production process， which are the main factors for the production of stamping waste， and it is difficult to achieve 100% identification only by routine inspection， so the stamping cracked and wrinkled parts escape to the next process happens. Therefore， it is particularly important to understand the influencing factors of stamping and stretching cracking and wrinkling in the production process and to understand how to prevent them.

Key words：stamping and stretching， cracking， wrinkling， die， blank holder force， air-cushion top block， air-cushion top rod

1 引言

沖壓拉伸工藝可以成形復(fù)雜形狀零件，且質(zhì)量好、剛性好，是一種常見(jiàn)的沖壓成形工藝，在汽車(chē)車(chē)身件沖壓制造的運(yùn)用非常普遍。（剩余2768字）