汽車后行李箱蓋沖壓模具CAD設(shè)計(jì)

9900字
自己原創(chuàng)的畢業(yè)論文，已經(jīng)通過校內(nèi)系統(tǒng)檢測(cè)，重復(fù)率低，僅在本站獨(dú)家出售，大家放心下載使用

摘要
本次課題汽車覆蓋件行李箱后板拉延模設(shè)計(jì)，首先需要對(duì)零件進(jìn)行沖壓工藝分析，并且由此對(duì)其沖壓方向進(jìn)行選擇。為了選擇沖壓設(shè)備來滿足沖壓過程的需要，需要計(jì)算沖壓力。接著要進(jìn)行拉延模的具體設(shè)計(jì)，首先要確定模具的結(jié)構(gòu)形式以及模具中心。接著要對(duì)凸模﹑凹模以及壓邊圈等零件進(jìn)行設(shè)計(jì)，并進(jìn)行三維建模，出二維圖紙。之后，還要根據(jù)模具的結(jié)構(gòu)對(duì)壓邊零件進(jìn)行選擇。拉延材料的選擇也是不可少的，拉延材料的選擇通常是根據(jù)零件的生產(chǎn)批量決定的，大批量則采用性能好的材料。該零件復(fù)雜且尺寸不規(guī)則，這對(duì)模具設(shè)計(jì)提出了較高的要求。而且汽車覆蓋件大而薄，在拉深過程中可能會(huì)出現(xiàn)一些問題，尤其需要考慮破裂和起皺。為了防止起皺，設(shè)計(jì)拉延筋，增大壓邊力。但是為了防止破裂，壓邊力不能過大，因此壓邊力的控制極其重要。

關(guān)鍵詞：汽車覆蓋件，工藝分析，沖壓模具，拉延模



Abstract
This topic is the design of drawing die for automobile covering parts of trunk back plate,First ,we need to analyse the stamping process of parts,and the choice of the stamping direction.In order to select the stamping equipment to meet the needs of the stamping process, we need to calculate the impact pressure.And then,we need to design the drawing die specificly, First we need to determine the structure of die and mold center.Then we carriy on designing the punch, die and blank holder and other parts, and 3D modeling, the 2D drawings.Then, according to the mould structure ,which was used to select pressure boundary components. Drawing material selection is necessary, drawing material selection is usually based on parts of the production decision, and large quantities should select the materials with good performance.The components are complex and size irregular, which puts forward higher requirements on the die design.But the automobile covering is large and thin, In the process of drawing may be some problems, especially the need to consider the fracture and wrinkle.In order to prevent wrinkling, we need to design drawbead, increase the blank holder force. But in order to prevent rupture, the blank holder force can not be too large, the blank holder force control is extremely important.

Keywords: automobile parts,process analysis,stamping die,drawing die


目錄
1 引言 4
2工藝方案確定 7
2.1 零件及沖壓工藝分析 7
2.2 確定沖壓方向 8
2.3 沖壓力的計(jì)算 9
2.4 沖壓設(shè)備的選用 10
3 拉延模設(shè)計(jì) 11
3.1 模具結(jié)構(gòu)形式 11
3.2 模具中心的確定 11
3.3 凸模的設(shè)計(jì) 12
3.4 凹模的設(shè)計(jì) 14
3.5 壓邊圈的設(shè)計(jì) 16
3.6 下模座的設(shè)計(jì) 17
3.7 壓邊零件 18
3.8 拉延筋的設(shè)計(jì) 19
3.9 導(dǎo)向零件的設(shè)計(jì) 20
3.10 拉延材料的選擇 20
3.11 拉延過程中的問題 21
4 總結(jié) 22
5 致謝 23
6參考文獻(xiàn) 24