摘 要

空調(diào)外機頂蓋是一種典型的沖壓件，它是企業(yè)二類外觀件，要求它的外表面平滑度要高，成形性要好，無皺折、裂紋等缺陷，而對其內(nèi)表面的要求較低。
論文根據(jù)頂蓋的結(jié)構(gòu)和尺寸特點，在進行廣泛查閱文獻的基礎(chǔ)上，借助沖壓工藝理論對其進行了工藝性分析及方案比較，確定了它的工藝方案為：落料沖孔→拉深成形→一次翻邊拉彎→二次翻邊拉彎→三次翻邊拉彎→折邊。
利用數(shù)值模擬軟件DYNAFORM，對頂蓋拉深成形工藝過程進行了模擬。通過模擬結(jié)果的分析，驗證了一次拉深成形的工藝方法。論文設(shè)計了頂蓋落料沖孔復(fù)合模具及拉深成形模具；對關(guān)鍵工藝參數(shù)及相應(yīng)工作尺寸進行了計算；完成了頂蓋落料沖孔復(fù)合模及拉深成形模的模具總裝圖及關(guān)鍵零件的零件圖的繪制。


關(guān)鍵詞：空調(diào)外機頂蓋，沖壓成形，拉深成形模擬，模具設(shè)計

ABSTRACT

Outdoor-segment of air-conditioner upper-box is a typical stamp. It is the second category of appearance in enterprises, which requests higher smoothness on the outer surface, better forming, no fold, cracks and other defects, while lower on the inner surface of all the factors.
According to Upper-Box’s structure and size characteristics, based on a wide range of literatures, the paper analyzes and compares its forming processes in virtue of stamping technology, and finally establishes its process program: blanking piercing →drawing forming →first flanging →second flanging →three flanging →flapping.
Drawing forming process of the upper-box is simulated by numerical simulation software DYNAFORM. According to the analysis of the simulation results, one drawing forming method could be carried out. The paper designs blanking-piercing compound die and drawing forming die, calculates the key process parameters and corresponding working size, accomplishes assembly drawing of blanking-piercing compound die and drawing forming die, as well as part drawing of key accessories in the die.


Key words：Outdoor-segment of air-conditioner upper-box, stamping forming, drawing forming simulation, die design

目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 選題背景 1
1.2 選題意義 1
1.3 板料沖壓發(fā)展現(xiàn)狀 2
1.4 板料成形模擬技術(shù)發(fā)展現(xiàn)狀 2
2 頂蓋沖壓工藝分析 5
2.1 零件分析 5
2.1.1 材料性能分析 5
2.1.2 零件結(jié)構(gòu)分析 6
2.2 確定工藝方案 7
2.2.1 工藝方案比較 7
2.2.2 填寫工藝卡 7
2.3 毛坯展開與排樣 11
2.3.1 毛坯的展開 11
2.3.2 排樣與搭邊 12
3 DYNAFORM數(shù)值模擬 13
3.1 模擬準備 13
3.2 模擬過程 14
3.2 模擬結(jié)果分析 16
4 模具設(shè)計與工藝計算 17
4.1 落料沖孔復(fù)合工序 17
4.11 工藝計算 17
4.12 壓力機的選擇 19
4.13 模具零件設(shè)計 20
4.14 沖模閉合高度 22
4.15 模具工作原理 23
4.2 拉深成形工序 24
4.21 工藝計算 24
4.22 壓力機的選擇 26
4.23 模具零件設(shè)計 27
4.24 模具閉合高度 29
4.25 模具工作原理 30
5 結(jié)論 31
答謝辭 32
參考文獻 33