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型彎曲件的沖壓工藝及模具設(shè)計(jì)
摘要：本設(shè)計(jì)題目為型彎曲模設(shè)計(jì)，體現(xiàn)了典型型彎曲模的設(shè)計(jì)要求、內(nèi)容及方向，有一定的設(shè)計(jì)意義。通過對(duì)該零件模具的設(shè)計(jì)，進(jìn)一步加強(qiáng)了設(shè)計(jì)者彎曲模設(shè)計(jì)的基礎(chǔ)知識(shí)，為設(shè)計(jì)更復(fù)雜的彎曲模具做好了鋪墊和吸取了更深刻的經(jīng)驗(yàn)。
本設(shè)計(jì)運(yùn)用彎曲成型工藝及模具設(shè)計(jì)的基礎(chǔ)知識(shí)，首先分析了板材的性能要求，為選取模具的類型做好了準(zhǔn)備；然后計(jì)算了彎曲件的彎曲力，便于選取壓力機(jī)噸位及確定壓力機(jī)型號(hào)；最后分析了彎曲件的特征，確定模具的設(shè)計(jì)參數(shù)、設(shè)計(jì)要點(diǎn)及頂出裝置的選取。
本設(shè)計(jì)采用了八字?jǐn)[塊復(fù)合模成型型件。復(fù)合模具有生產(chǎn)效率高，制件精度高等特點(diǎn)，特別適合大批量高精度生產(chǎn)。成型原理可劃分為兩個(gè)階段：首先，凸模與凹模共同作用成型U形件；凹模繼續(xù)下行，迫使擺塊左右擺動(dòng)動(dòng)作，U型件被再次彎曲成型，最后成型型件，這種機(jī)構(gòu)動(dòng)作靈活可靠，設(shè)計(jì)方便，非常適合在本副模具中使用。
關(guān)鍵詞：彎曲模 ， 凸模 ， 凹模 ， 擺塊
TYPE BENDING PARTS STAMPING PROCESS AND DIE DESIGN
Abstract：This design topic is a type of bending die design, embodies the typical type of bending die design requirements, the content and direction, has a certain meaning of design.Based on the parts, mold design to further strengthen the foundation of the designers bending die design knowledge, has laid a good groundwork for the design of bending die with more complex and gain a more profound experience.
This design using the basic knowledge of bending forming technology and die design, analyzes the performance requirements of the plate, ready for the selection of mold types;
Then calculated the bending force of bending parts, easy to choose press tonnage and determine the press type;In the final analysis the characteristics of bending parts, mold design parameters, key points of design and selection of ejection device.
This design USES the figure of eight pendulum block type compound die.Composite mould has high production efficiency, high precision parts, especially suitable for mass production and high precision.Forming principle can be divided into two stages: first, the combination of convex and concave die shape U;Die to continue downward, forced the pendulum swinging movements, u-shaped bent by forming again, finally forming parts, this kind of agency action is flexible and reliable, convenient design, very suitable for use in the vice mould.
Keywords: bending punch die set piece
目 錄
1 緒 論 1
1.1國(guó)內(nèi)模具的現(xiàn)狀和發(fā)展趨勢(shì) 1
1.1.1國(guó)內(nèi)模具的現(xiàn)狀 1
1.1.2 國(guó)內(nèi)模具的發(fā)展趨勢(shì) 1
1.2 國(guó)外模具的現(xiàn)狀和發(fā)展趨勢(shì) 2
1.3 支架模具設(shè)計(jì)與制造方面 2
1.3.1 支架模具設(shè)計(jì)的設(shè)計(jì)思路 2
1.3.2支架模具設(shè)計(jì)的進(jìn)度 3
2 彎曲件工藝性分析及方案的確定 4
2.1彎曲件工藝性分析 4
2.2工藝方案的確定 4
2.3彎曲件工藝方案分析 7
3、主要設(shè)計(jì)計(jì)算 8
3.1主要設(shè)計(jì)計(jì)算 8
3.1.1彎曲件毛坯坯料尺寸計(jì)算 8
3.1.2 彎曲應(yīng)力的計(jì)算 9
3.1.3 圧料力計(jì)算 9
3.1.4 壓力機(jī)公稱壓力的確定 9
3.2彎曲模工作部分尺寸的設(shè)計(jì) 10
3.2.1凸模圓角半徑設(shè)計(jì) 10
3.2.2 凹模圓角半徑 10
3.2.4 凸、凹模間隙計(jì)算 11
3.3 U形彎曲凹凸模橫向尺寸的設(shè)計(jì) 12
3.4 彈簧的選用 13
3.4.1每個(gè)彈簧力計(jì)算 13
3.4.2彈簧預(yù)壓縮量 14
3.4.3彈簧校核 14
4 模具類型的選擇 15
4.1 模具結(jié)構(gòu)選擇 15
4.2定位方式的選擇 16
4.3出件方式的設(shè)計(jì) 16
5 主要零件的設(shè)計(jì) 17
5.1工件零部件的結(jié)構(gòu)設(shè)計(jì) 17
5.1.1凸模的結(jié)構(gòu)草圖如下圖所示： 17
5.1.2凸模主要尺寸的計(jì)算 17
5.2凹模的結(jié)構(gòu)設(shè)計(jì) 19
5.2.1凹模主要尺寸的設(shè)計(jì) 19
5.3.2擺塊的主要尺寸設(shè)計(jì) 20
5.4定位零件的設(shè)計(jì) 21
5.4.1限位釘?shù)脑O(shè)計(jì) 21
5.5定位塊的設(shè)計(jì) 22
5.6彈頂部件的設(shè)計(jì) 23
5.6.1墊片的設(shè)計(jì) 23
5.6.2導(dǎo)板的設(shè)計(jì) 23
6 壓力機(jī)的參數(shù)與比較 24
7 模具零件的加工工藝 25
7.1凸模的加工工藝過程 25
7.2凹模的加工工藝過程 25
8 模具的裝配 27
9 模具試沖 28
設(shè)計(jì)小結(jié) 29
致謝 30
參考文獻(xiàn) 31
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