“底腳支架”沖壓成形工藝及模具設(shè)計(jì)（本科畢業(yè)論文設(shè)計(jì)）

摘    要

論述了沖壓工藝的性質(zhì)、應(yīng)用，以及我國(guó)沖壓行業(yè)的概況，沖壓發(fā)展的前景，模具行業(yè)的發(fā)展趨勢(shì)；本設(shè)計(jì)首先從沖壓零件的形狀、尺寸等方面，對(duì)“底腳支架”進(jìn)行了沖壓的可行性分析，以及沖壓零件的經(jīng)濟(jì)性分析。然后對(duì)零件的坯料規(guī)格和坯料的排樣進(jìn)行了計(jì)算。對(duì)“底腳支架”成型工序進(jìn)行了初步的確認(rèn)，并且計(jì)算了相應(yīng)工序的工藝參數(shù)，通過(guò)計(jì)算每道工序所需要的沖壓力，選擇與之匹配的設(shè)備，制定了相應(yīng)的生產(chǎn)工藝卡；重點(diǎn)計(jì)算了模具工作尺寸，然后根據(jù)模具的尺寸，結(jié)合壓力機(jī)的閉合高度等因素選擇了合適的標(biāo)準(zhǔn)件。最后對(duì)脹形凸模進(jìn)行了模具制造工藝的設(shè)計(jì)?！暗啄_支架”的設(shè)計(jì)中涉及到下料、預(yù)脹形、整形、切邊、沖孔、翻邊等六種不同性質(zhì)的工藝。共設(shè)計(jì)了兩套模具，該設(shè)計(jì)技術(shù)可行經(jīng)濟(jì)合理，安全可靠，基本可用于生產(chǎn)實(shí)踐。

關(guān)鍵詞：“底腳支架”，沖壓，工藝設(shè)計(jì)，模具設(shè)計(jì)

ABSTRACT

This current design not only states the character and application of stamping craft, introduces the general situation of craft in China but also depicts the future development of stamping craft and tendency of mould industry. The current design, first ,analyzes stamping feasibility of the foot bracket from aspects of hardware,such as :figure, dementsion; As well as stamping Parts efficient analysis and Blank parts of the specifications and the blank layout were calculated. Second ,makes a preliminary confirmation about shaping procedure of the foot bracket and calculates parameters of related procedures. On the basis of calculation of the stamping strength in every procedure ,the current design chooses matched equipments,constitutes the proper scheme and draws related process card . In the process of the design ,it is dimension of mould that is mainly calculated. At last ,Drawing in the beading punch of Die Manufacturing Process Design. The design of the foot bracket involves six working procedures: There are two sets of moulds designed in this current design,which are technically feasible ,economically reasonable ,and safely credible. Therefore ,the current design an be basically put into practice.

Key words: the foot bracket, stamping, process design, die design

目   錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1沖壓技術(shù)的特點(diǎn) 1
1.2冷沖壓工藝及模具在工業(yè)生產(chǎn)中的地位 1
1.3我國(guó)沖壓工藝及模具行業(yè)的現(xiàn)狀 1
1.4沖壓工藝及模具技術(shù)的前景 2
1.4.1沖壓工藝方面 2
1.4.2沖模方面 3
1.4.3沖壓設(shè)備和沖壓生產(chǎn)自動(dòng)化方面 3
2沖壓件的工藝分析 5
2.1零件的基本幾何結(jié)構(gòu)分析 5
2.2 零件的工藝分析 5
2.2.1主要沖壓工序的可行性分析 5
2.2.2 沖壓零件的經(jīng)濟(jì)性分析 8
2.3 結(jié)論 8
3 工藝設(shè)計(jì) 9
3.1 工藝方案設(shè)計(jì) 9
3.1.1  毛坯尺寸計(jì)算 9
3.1.2  工藝方案的設(shè)計(jì) 10
3.2 沖壓力的計(jì)算和沖壓設(shè)備的選擇 13
3.2.1 預(yù)脹形工序 14
3.2.2 成形工序 15
3.2.3 切邊工序 16
3.2.4 沖孔工序 15
3.2.5 翻邊工序 16
3.3 沖壓工藝卡 17
4 模具設(shè)計(jì) 19
4.1預(yù)脹形模設(shè)計(jì) 19
4.1.1模具結(jié)構(gòu)設(shè)計(jì) 19
4.1.2 模具工作部分零件設(shè)計(jì) 19
4.1.3 推件塊的設(shè)計(jì) 22
4.1.4 壓邊圈的設(shè)計(jì) 22
4.1.5 導(dǎo)柱、導(dǎo)套的設(shè)計(jì) 22
4.2  沖孔模設(shè)計(jì) 22
4.2.1 沖孔模結(jié)構(gòu)設(shè)計(jì) 22
4.2.2  凸模和凹模尺寸設(shè)計(jì) 23
5 模具制造工藝 25
5.1  模具制造的特點(diǎn) 25
5.2  模具制造工藝 25
5.2.1 Cr12MoV的改性及熱處理規(guī)范 25
5.2.2 加工工藝卡 27
6 結(jié)論 28
7 致謝 29
參考文獻(xiàn) 30