【正文】 工件平直度較高，料厚為 相對(duì)較薄，卸料力較小，彈壓卸料模 具比剛性卸料模具方便，操作者可以看見條料在模具中的送進(jìn)動(dòng)態(tài)，且彈性卸料板對(duì)工件施加的是柔性力，不會(huì)損傷工件表面，所以采用彈性卸料。 引線片沖裁件沖裁工藝及模具設(shè)計(jì) 15 5 模具零件設(shè)計(jì)及標(biāo)準(zhǔn)件的選擇 工作零件設(shè)計(jì) 工作零件包括凹模、凸模，由于零件外形不規(guī)則，其模具采用配合加工制作制造，即落料時(shí)以凹模為基準(zhǔn)，只需計(jì)算凹模刃口尺寸和公差；沖孔以凸模為基礎(chǔ)，只需計(jì)算凸模 刃 口尺寸及公差。 其他板類零件的設(shè)計(jì) 當(dāng)凹模的外形尺寸確定后，可根據(jù)凹模的外形尺寸查閱有關(guān)標(biāo)準(zhǔn)的凸模固定引線片沖裁件沖裁工藝及模具設(shè)計(jì) 19 板、墊板、卸料板 和模座 的外形尺寸 : 卸料板 :其厚度為凹模厚度的 ～ 1 倍 [8]，得 100 90 16，材料為 45 鋼； 墊板：查 JB/ 得，墊板 100 90 8，材料為 45 鋼； 凸模固定板 :查 JB/T58094 得，凸模固定板 100 90 16，材料為 45 鋼； 模座 :查 GB/，滑動(dòng)導(dǎo)向下模座 160 100 30，材料為 HT200； 查 GB/ 得，滑動(dòng)導(dǎo)向上模座 160 100 40，材料為 HT200； 橡膠的選用 根據(jù)模具的總體設(shè)計(jì)可以得到，選用橡膠作為彈性卸料裝置 （ 1）根據(jù)卸料力求橡膠的橫截面積 F= 1pP = = F： 橡膠橫截面積 2mm 。 3 裝配下模 1) 在下模座上劃中心線，按中心預(yù)裝凹模、導(dǎo)料板； 2) 在下模座、導(dǎo)料板上，用已加工好的凹模分別確定其螺孔位置，并分別鉆孔，攻絲； 3) 將下模座、導(dǎo)料板、凹模、固定擋料銷裝在一起，并用螺釘緊固，打入銷釘。 從陌生到開始接觸，從了解到熟悉，這是每個(gè)人認(rèn)識(shí)事物所必經(jīng)的一般過程，我對(duì)模具的認(rèn)識(shí)過程亦是如此。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulang39。 通過這次設(shè)計(jì)，我更加深入地學(xué)習(xí)了冷沖壓技術(shù)工作設(shè)計(jì)的內(nèi)容。 河南機(jī)電高等?？茖W(xué)校畢業(yè)設(shè)計(jì)說明書 22 圖 5引線片級(jí)進(jìn)模裝配圖 凹模 螺釘 導(dǎo)料板 彈性橡膠體 導(dǎo)套 螺釘 下模座 模柄 止 轉(zhuǎn) 銷 銷釘 1墊板 1導(dǎo)柱 1 凸模固定板 1 螺釘 1卸料板 1側(cè)刃切刀 1銷釘 1 螺釘 下模座 引線片沖裁件沖裁工藝及模具設(shè)計(jì) 23 7 模具零件加工工藝 本副沖裁模，模具零件加工的關(guān)鍵在工作零件、固定板以及卸料板，若采用線切割加工技術(shù)，這些零件的加工就變得相對(duì)簡(jiǎn)單。 矩形凸模： 50； 如下圖 4 所示： 圖 4 凸模壓應(yīng)力校核： 圓形凸模的校核 min 4td ??? ????壓 4 360= 1500?? ≈ 非圓形凸模壓應(yīng)力校核 min FA ?? ????壓 河南機(jī)電高等?？茖W(xué)校畢業(yè)設(shè)計(jì)說明書 18 =479351500 ? ?????壓 ：凸模材料的許用壓應(yīng)力； 帶有導(dǎo)向裝置的凸模彎曲應(yīng)力校核： 圓形凸模： m a x 1 .8 5 1 .8 5270 FL ?? ? 非圓形凸模： max 1200IFL ?? I: 凸模最小橫截面積的慣性矩 4mm ； F: 沖裁力 N。具有導(dǎo)向平穩(wěn)、導(dǎo)向準(zhǔn)確可靠、剛性好等優(yōu)點(diǎn)。當(dāng)固定卸料板還要起到對(duì)凸模的導(dǎo)向作用時(shí)卸料板與 凸模的配合間隙應(yīng)該小于沖裁間隙。 總和比較上邊兩種方案可以得出，方案二的利用率稍微高些，但是方案二的送進(jìn)距離過大，給操作者帶來很大的不便，且性價(jià)比不高，故而選取方案一作為排樣方式。由于我的水平有限，而且缺乏經(jīng)驗(yàn)，設(shè)計(jì)中難免會(huì)出現(xiàn)疏漏和不妥之處，敬請(qǐng)各位老師指正?？梢灶A(yù)見，我國(guó)經(jīng)濟(jì)的高速發(fā)展將對(duì)模具提出更為大量、更為迫切的需求， 特別需要發(fā)展大型、精密、復(fù)雜、長(zhǎng)壽命的模具。 大學(xué)三年的學(xué)習(xí)即將結(jié)束，畢業(yè)設(shè)計(jì)是在完成大學(xué)三年的課程學(xué)習(xí)和課程、生產(chǎn)實(shí)習(xí)其中最后一個(gè)實(shí)踐環(huán)節(jié)，是對(duì)以前所學(xué)的知識(shí)及所掌握的技能的綜合運(yùn)用和檢驗(yàn)。 Finally has analyzed the characteristic of the products, has advantaged to finite the mold design variable,the design main point and shedder. This design used piercing and blanking progressive die to form the forming principle can be divided to two stages: First, piercing punch and die affect together and pierce two holes of? and two holes of? ,then use the three holes as pinpoint to make the product formed. Key word Piercing and blanking progressive die Piercing punch Press Tonnage 引線片沖裁件沖裁工藝及模具設(shè)計(jì) 5 1 緒 論 目前，我國(guó)沖壓技術(shù)與工業(yè)發(fā)達(dá)國(guó)家相比還相當(dāng)?shù)穆浜螅饕蚴俏覈?guó)在沖壓