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本科畢業(yè)論文-引線片沖裁件沖裁工藝及模具設計(留存版)

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【正文】 工件平直度較高,料厚為 相對較薄,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動態(tài),且彈性卸料板對工件施加的是柔性力,不會損傷工件表面,所以采用彈性卸料。 引線片沖裁件沖裁工藝及模具設計 15 5 模具零件設計及標準件的選擇 工作零件設計 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,即落料時以凹模為基準,只需計算凹模刃口尺寸和公差;沖孔以凸模為基礎,只需計算凸模 刃 口尺寸及公差。 其他板類零件的設計 當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標準的凸模固定引線片沖裁件沖裁工藝及模具設計 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/,滑動導向下模座 160 100 30,材料為 HT200; 查 GB/ 得,滑動導向上模座 160 100 40,材料為 HT200; 橡膠的選用 根據(jù)模具的總體設計可以得到,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,按中心預裝凹模、導料板; 2) 在下模座、導料板上,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,這是每個人認識事物所必經(jīng)的一般過程,我對模具的認識過程亦是如此。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。 通過這次設計,我更加深入地學習了冷沖壓技術工作設計的內(nèi)容。 河南機電高等??茖W校畢業(yè)設計說明書 22 圖 5引線片級進模裝配圖 凹模 螺釘 導料板 彈性橡膠體 導套 螺釘 下模座 模柄 止 轉 銷 銷釘 1墊板 1導柱 1 凸模固定板 1 螺釘 1卸料板 1側刃切刀 1銷釘 1 螺釘 下模座 引線片沖裁件沖裁工藝及模具設計 23 7 模具零件加工工藝 本副沖裁模,模具零件加工的關鍵在工作零件、固定板以及卸料板,若采用線切割加工技術,這些零件的加工就變得相對簡單。 矩形凸模: 50; 如下圖 4 所示: 圖 4 凸模壓應力校核: 圓形凸模的校核 min 4td ??? ????壓 4 360= 1500?? ≈ 非圓形凸模壓應力校核 min FA ?? ????壓 河南機電高等??茖W校畢業(yè)設計說明書 18 =479351500 ? ?????壓 :凸模材料的許用壓應力; 帶有導向裝置的凸模彎曲應力校核: 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。具有導向平穩(wěn)、導向準確可靠、剛性好等優(yōu)點。當固定卸料板還要起到對凸模的導向作用時卸料板與 凸模的配合間隙應該小于沖裁間隙。 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,但是方案二的送進距離過大,給操作者帶來很大的不便,且性價比不高,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,設計中難免會出現(xiàn)疏漏和不妥之處,敬請各位老師指正。可以預見,我國經(jīng)濟的高速發(fā)展將對模具提出更為大量、更為迫切的需求, 特別需要發(fā)展大型、精密、復雜、長壽命的模具。 大學三年的學習即將結束,畢業(yè)設計是在完成大學三年的課程學習和課程、生產(chǎn)實習其中最后一個實踐環(huán)節(jié),是對以前所學的知識及所掌握的技能的綜合運用和檢驗。 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計 5 1 緒 論 目前,我國沖壓技術與工業(yè)發(fā)達國家相比還相當?shù)穆浜?,主要原因是我國在沖壓
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