【正文】
................................................................................ 4 1. 引言 ....................................................................................................... 5 2. 彎曲工藝分析 ........................................... 5 2. 1 材料分析 ........................................... 5 2. 2 結構分析 ........................................... 6 2. 3 精度分析 ........................................... 6 3. 工藝方案的確定 ......................................... 7 4. 彎曲工藝計算 ........................................... 7 4. 1 毛坯件的計算 ....................................... 7 4. 2 彎曲力的計算 ....................................... 8 4. 3 彎曲模主要零部件尺寸 ............................... 9 5. 熱處理要求 ............................................ 14 6. 模具的裝配圖 .......................................... 15 參考文獻 .................................................. 16 致謝 ...................................................... 17 內(nèi)容摘要 : 彎曲工藝的基本運動是卸料板先與板料接觸并壓死,凸模下降至與板料接觸,并繼續(xù)下降進入凹模,凸、凹模及板料產(chǎn)生相對運動,導致板料變形折彎,然后凸、凹模分開,彎曲凹模上的頂桿(或 滑塊)把彎曲邊推出,完成彎曲運動。卸料板及頂桿的運動是非常關鍵的,為了保證彎曲的質(zhì)量或生產(chǎn)效率,必須首先控制卸料板的運動,讓它先于凸模與板料接觸,并且壓料力一定要足夠,否則彎曲件尺寸精度差,平面度不良;其次,應確保頂桿力足夠,以使它順利地把彎曲件推出,否則彎曲件變形,生產(chǎn)效率低。 關鍵詞 : 彎曲 、凹模、凸模、頂桿、卸料板 Abstrac: Bending process is the stripper plate before the basic movement and the sheet metal contacts and crushed, reduced to the punch and the sheet metal contacts and to continue to fall into the matrix, convex and concave molds and sheet metal production relative motion, leading to deformation of folded sheet bend, then convex, concave mold to separate the mandril bending matrix (or slider) to launch bending side to plete