【正文】
刷機(jī)的鉛字至今已有150多年的歷史。該壓鑄機(jī)的鎖模力為1250kN,充頭直徑為60mm時(shí)的最大靜壓力為44Mpa,。32e7配合定位,導(dǎo)套和導(dǎo)柱均采用T10A材料,并進(jìn)行淬火處理,處理后硬度50~55HRC。為了使零件頂出平衡,模具在動(dòng)模座板上裝有推板導(dǎo)柱,與推板固定板的推板導(dǎo)套配合,保證其頂出平衡。故該面需要設(shè)計(jì)滑塊機(jī)構(gòu)側(cè)抽芯。(2)分型面的選擇 根據(jù)罩殼零件的結(jié)構(gòu),綜合考慮抽芯及澆注系統(tǒng)的設(shè)定,分型面設(shè)在罩殼零件毛坯圖的面上。本人授權(quán) 大學(xué)可以將本學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫(kù)進(jìn)行檢索,可以采用影印、縮印或掃描等復(fù)制手段保存和匯編本學(xué)位論文。盡我所知,除文中特別加以標(biāo)注和致謝的地方外,不包含其他人或組織已經(jīng)發(fā)表或公布過(guò)的研究成果,也不包含我為獲得 及其它教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過(guò)的材料。對(duì)本文的研究做出重要貢獻(xiàn)的個(gè)人和集體,均已在文中以明確方式標(biāo)明。圖表整潔,布局合理,文字注釋必須使用工程字書(shū)寫(xiě),不準(zhǔn)用徒手畫(huà)3)畢業(yè)論文須用A4單面打印,論文50頁(yè)以上的雙面打印4)圖表應(yīng)繪制于無(wú)格子的頁(yè)面上5)軟件工程類(lèi)課題應(yīng)有程序清單,并提供電子文檔1)設(shè)計(jì)(論文)2)附件:按照任務(wù)書(shū)、開(kāi)題報(bào)告、外文譯文、譯文原文(復(fù)印件)次序裝訂3)其它設(shè)計(jì)總說(shuō)明本設(shè)計(jì)依據(jù)國(guó)家相關(guān)技術(shù)標(biāo)準(zhǔn)和相關(guān)壓鑄廠的技術(shù)標(biāo)準(zhǔn)、規(guī)范進(jìn)行相關(guān)設(shè)計(jì)。60H9澆口套。模具外框部分如:動(dòng)、定模套板和座板采用45鋼制造。側(cè)型芯抽芯滑塊的設(shè)計(jì)考慮到強(qiáng)度采用了整體結(jié)構(gòu),材料仍用3Cr2W8V,淬火后硬度44~48HRC。推板導(dǎo)柱與推板導(dǎo)套均采用T10A材料,并進(jìn)行淬火處理,處理后硬度50~55HRC,推板導(dǎo)柱與動(dòng)模支承板的配合為H7/m6,推板導(dǎo)柱與推板導(dǎo)套的配合為H9/e9,由于推板導(dǎo)柱與推板導(dǎo)套在模具使用過(guò)程中只是相對(duì)滑動(dòng),不會(huì)脫出,所以在推板導(dǎo)柱與推板導(dǎo)套的配合的端部設(shè)計(jì)C2的導(dǎo)向即可,導(dǎo)向段不必過(guò)長(zhǎng),反之頂出部分受力條件不好,易磨損。and the surface roughness is ,which are in the scope of the ability of the diecasting processes,so the up cover is accord with the die casting technological requirements. (2) The choice of parting face According to structure of the up cover part to prehensive consider the setting of the loose core and the running gate system,we set it on the face of theⅠⅠ of the up cover part’s blank picture.(3) Confirm the running gate structure As the up cover part has two hole,and the dimension is 3mm,which head face need loose core,and the average wall thickness is quite order to make the flow path to be shorter,avoid cold shut and ensure mould to be heat balance, the running gate system can flow into the cavity through the two side of the dimension which is 32mm at the same time,and the running gate could setted to be the side running gate,and could set the gather scrap material and exhausttrough in the inflow the choice of running gate knot,we can take the straight irrigate road ,which dimension is the irrigate road’s shape is “V”,which is connected with the inner running gate.(4) Design the general assembly drawing of the diecasting mould As to one side has two holes ,its dimension is ,and the other is the sunken part ,its dimension is it needs design the slide block mechanism on the side to side the slide block is quite wide,we need need two taper pin core to the flow direction if the running gate system,we use the up loose core,the two spring attachment the slide block while the mould is order to avoid the casting has misalignment,so we use guide pins and bushings with clearance fit to locate the position in the positioning way of the moveing die and the cover half .in order to save the cost of the mould,for example ,we use 3Cr2W8V in the moveing die insert and the cover half insert in the cavity tangent part of the mould with the metal liquid. In the outline border of the mould part,for example ,the moving die lag、the cover half lag and the riser plate are taken the 45 steel to use the boss to position in the moving die insert、cover half insert and the moving die lag、the cover lag, the lag and the base plate fixed with screws after connecting the design of the push rod, In putter design, since the thin shell of the part, can not design a round putter, it was designed in part wall thickness at 8 flat putt, to increase the top of the area, the rest of the plane has a different diameter in round push lever to ensure the smooth introduction of casting. To make the top part out of balance, moving the mold with mold base plate push plate guide column, and the push plate push plate fixed plate with the guide sleeve to ensure that the top of the balance. Easy installation, taking into account the die casting, die in the fixed mode and dynamic model are equipped with 25mm thick, 25mm wide plate location to put on. Modelling and dynamic simulation in the design of the rings on the screw holes. (5) Die casting parts diagram scheduled to die Taoban, scheduled to die base plate, dynamic model Taoban, dynamic mold base boards, and four are used for quenched and tempered 45 steel, the hardness required 28 ~ 32HRC. Cavity part of the design given by the fixed mold insert material 3Cr2W8V, after quenching hardness 44 ~ 48HRC. Cavity moving part of the design, using a dynamic model and dynamic model of the core inserts set the binations to address the mold problem and to ensure dimensional accuracy of the mold cavity. Pulling the slider side core design of strength by taking into account the overall structure, material still used 3Cr2W8V, after quenching hardness 44 ~ 48HRC. Dynamic model Move, scheduled to die by positioning guide sleeve and guide post 216。1839年一種活塞式壓鑄機(jī)獲得了第一個(gè)壓力鑄造專(zhuān)利。波拉克(Josef Polak)設(shè)計(jì)了立式冷壓室壓鑄機(jī)。 國(guó)內(nèi)外研究現(xiàn)狀及發(fā)展趨勢(shì)由于科技水平的提高和經(jīng)濟(jì)的發(fā)展,以轎車(chē)為主體的汽車(chē)工業(yè)的蓬勃發(fā)展,加速了壓鑄工業(yè)水平的提升。4) 壓鑄性材料的研究和應(yīng)用得到推廣。主要研究?jī)?nèi)容:對(duì)壓鑄件進(jìn)行工藝性分析,并繪制產(chǎn)品毛胚圖;對(duì)模具進(jìn)行總體設(shè)計(jì),包括分型面的選擇、澆注系統(tǒng)、排溢系統(tǒng)的設(shè)計(jì)、成型零件及結(jié)構(gòu)零件壓鑄模結(jié)構(gòu)的設(shè)計(jì);對(duì)所選壓鑄機(jī)的鎖模力、開(kāi)模矩等進(jìn)行核算;對(duì)模具的成型零件進(jìn)行造型設(shè)計(jì)。整個(gè)鑄件中只有寬有精度要求,因此鑄造時(shí)要保證的精度要求,該尺寸的精度為GB6414—86 6級(jí),其余未注尺寸及注有尺寸的精度等級(jí)均為GB6414—86 7級(jí),符合鑄件的工藝要求,為便于金屬液流暢,氣體的排出,并避免因銳角而產(chǎn)生裂紋,需要采用鑄造圓角R=1mm,因此罩殼滿(mǎn)足壓鑄要求。(1)主脹型力的計(jì)算 主脹型力按公式(3—2)計(jì)算: (3—2)式中 —主脹型力(kN);A—鑄件在分型面上的總投影面積,一般增加30%作為澆注系統(tǒng)與溢流排氣系統(tǒng)的面積();P—壓射比壓。選擇鑄件的分型面涉及鑄件的形狀和技術(shù)要求,澆注系統(tǒng)和溢流系統(tǒng)的布置、壓鑄工藝條件、壓鑄模的結(jié)構(gòu)和制造成本、模具的熱平衡等因素,這些因素往往是難以兼顧,確定分型面時(shí)要予以綜合考慮。對(duì)鑄件形狀結(jié)構(gòu)分析得知,分型面采用構(gòu)成鑄件形狀的型腔全部在動(dòng)?;蚨?nèi)的形式,講導(dǎo)致鑄件無(wú)法順利脫模,故采用構(gòu)成鑄件形狀的型腔分別在動(dòng)模和定模內(nèi)。同時(shí),澆注系統(tǒng)對(duì)生產(chǎn)效率、模具壽命、壓鑄件清理都有很大影響。5) 應(yīng)使金屬液充填型腔時(shí)的流程盡可能短,以減少金屬液的熱量損耗。④ 與直澆道相連接的橫澆道一般設(shè)置在澆道套的上方,防止金屬液在壓室前流入型腔。③ 橫澆道應(yīng)具有一定的厚度和長(zhǎng)度。3)調(diào)節(jié)模具的溫度場(chǎng)分布,改善模具的熱平衡狀態(tài)。(3)溢流槽結(jié)構(gòu)的確定溢流槽的截面形狀有三種:半圓形溢流槽、梯形溢流槽、和雙梯形溢流槽,由于鑄件壁厚較薄,故采用半圓形溢流槽。排氣槽的作用有:排除澆道、型腔及溢流槽內(nèi)的混合氣體,以利于充填、減少和防止壓鑄件中氣孔缺陷的產(chǎn)生。壓鑄模具的成型零件主要是指形成鑄件型腔的鑲塊和型芯,一般鑲塊用來(lái)形成鑄件的外輪廓形狀,而型芯則用來(lái)形成鑄件的內(nèi)部及側(cè)面凹凸形狀,是模具核心部分。3)兩個(gè)型芯或型腔之間的中心距離