Firstly, the paper is had analyzed the present situation and tendency of the ramming mold industry development through the data. The outline has been brief made about the cold stamping technology classification, the characteristic as well as the development direction; Explained with emphasis curving craft, the drawing craft in the compound mold, and the explanation has been carried on to its principle of work; Simultaneously this paper introduced in detail the ramming mold design process and the principle of work, the analysis based the ramming distortion process and the quality influence factor foundation in the pressing part, the introduction is made for the related matters concerned formulation of the ramming craft plan and design of the ramming mold. Finally the AutoCAD software is used to draw up a serie of the mold setting drawing and the parts drawing.
Keywords : Compound die; Shape forming; Claw-beding; Die design
目 錄
中文摘要……i
英文摘要……ii
目錄…iii
第一章 緒 論…1
1.1 課題背景1
1.2 我國(guó)沖壓模具的發(fā)展…2
1.2.1 工業(yè)之母——模具 …2
1.2.2 我國(guó)模具業(yè)與國(guó)外的差距…3
1.2.3 我國(guó)沖壓模具的發(fā)展趨勢(shì)…4
1.3 沖壓工藝概述…4
1.3.1 沖壓工藝的技術(shù)……4
1.3.2 沖壓工藝的前景……5
1.3.3 沖壓工藝的分類……5
1.3.4 成形工藝的技術(shù)分析5
1.4 論文的主要內(nèi)容6
第二章 彎曲工藝7
2.1 引 言…7
2.2 彎曲變形分析…7
2.2.1 彎曲變形過(guò)程7
2.2.2 彎曲變形的特點(diǎn)……7
2.2.3 彎曲變形時(shí)的應(yīng)力、應(yīng)變狀態(tài)分析9
2.3 彎曲質(zhì)量分析…10
2.3.1 彎曲裂紋與最小相對(duì)彎曲半徑……10
2.3.2 彎曲回彈……13
2.4 彎曲偏移16
2.5 彎曲模工作部分尺寸計(jì)算……16
2.5.1 彎曲時(shí)凸模與凹模之間的間隙 ……16
2.5.2 彎曲時(shí)凸模與凹模的寬度尺寸 ……17
2.6 本章小結(jié)……19
第三章 拉深工藝……20
3.1 引言…20
3.2 拉深的概述…20
3.3 圓筒形件的拉深變形21
3.3.1 圓筒形件的拉深 …21
3.3.2 拉深過(guò)程中坯料內(nèi)的應(yīng)力與應(yīng)變 22
3.3.3 起皺與拉裂 24
3.4 球形制件的拉深……24
3.5 本章小結(jié)……25
第四章 沖壓件工藝分析及沖壓工藝方案的確定…26
4.1 引言…26
4.2 成形工藝的技術(shù)分析26
4.3 沖壓件工藝分析……26
4.4 各種模具結(jié)構(gòu)介紹…27
4.4.1 單工序模具結(jié)構(gòu)特點(diǎn)27
4.4.2 復(fù)合模具結(jié)構(gòu)特點(diǎn)…28
4.4.3 連續(xù)(級(jí)進(jìn))模具結(jié)構(gòu)特點(diǎn)…28
4.5 確定沖壓工藝方案…28
4.6 本章小結(jié)……29
第五章 模具設(shè)計(jì)……30
5.1 引言…30
5.2 彎曲計(jì)算……30
5.2.1 回彈角……30
5.2.2 彎曲時(shí)凸模與凹模之間的間隙……30
5.2.3 彎曲時(shí)凸模與凹模的寬度尺寸……30
5.2.4 彎曲時(shí)模具圓角半徑與凹模深度…30
5.3 壓力機(jī)選擇…31
5.3.1 自由彎曲力…31
5.3.2 校正彎曲力計(jì)算……31
5.3.3 彎曲時(shí)壓力機(jī)的壓力確定…32
5.4 沖壓工藝流程32
5.5 本章小結(jié)……33
第六章 總結(jié)…34
參考文獻(xiàn)…35
致謝36