【正文】 基于 UG 和 VERICUT 的手機(jī)殼零件數(shù)控加工仿真 摘 要 注射成型是熱塑性塑料成型的主要方法之一，可以一次成型形狀復(fù)雜的 精密塑件。 本設(shè)計(jì) 是手機(jī)后蓋 塑 料模具的 設(shè)計(jì)，對(duì)零件結(jié)構(gòu)進(jìn)行了工藝分析 ，采用 ABS 作為塑件的材料 。采用單 分型面 ，根據(jù)模具的型腔數(shù)目以及最大注塑量、注射壓力、鎖模力、模具的安裝尺寸等因素 選擇了注射機(jī)， 選擇 成型零部件的尺寸 ； 采用 扇形 澆口 ； 利用直導(dǎo)柱導(dǎo)向， 斜滑頂 桿頂料 ,斜滑頂桿側(cè)抽，同時(shí)完成側(cè)抽和 頂 出 完成脫模 ， 并 對(duì) 模具的材料進(jìn)行了選擇 ， 如此設(shè)計(jì)出的結(jié)構(gòu)可 確保模具工作運(yùn) 行 可靠。對(duì)模具結(jié)構(gòu)與注射 機(jī)的匹配進(jìn)行了校核。 用 UG 繪制出模具三維圖形及 AutoCAD 繪制了一套模具裝配圖和零件圖 ，最后利用 UG 對(duì)型芯和型腔進(jìn)行了加工仿真，制定了符合要求的數(shù)控加工工藝過程。 關(guān)鍵詞 ： 手機(jī)后蓋； UG； 扇形 澆口 ；數(shù)控加工； ABS；注塑模具； Injection molding is one of the key ways of thermoplasticity plastic molding which can mold precise plastic part with plex shape. The design is a plastic mould design of the back over of mobile, which analysis part structural with ABS as the material of plastic part. The design adopt single parting surface, choose injection machine, the dimension of molding parts according to the factors of the number of molding die cavity and the maximum injection, injection pressure, locking force and so on, adopt fan gate, use straight guide pillar guiding, slanting ejector to eject materials and side core pulling to side core pulling and ejecting, and choose the materials of mold, which can ensure the reliability of molding. This paper check the matching of the structure of molding and injection machine, draw the three dimension of molding with UG a set of molding assembly drawing and part drawing with AutoCAD, utilize UG to simulate machining of mould core and mould cavity and make qualified working process of numerical control. Key words: the back over of mobile UG fan gate numerical control ABS Injection mold： 目 錄 1 緒論 .............................................................. 1 模具發(fā)展的現(xiàn)狀 .......................................... 1 存在問題和主要差距 ...................................... 3 發(fā)展展望 ............................................... 4 UG 的發(fā)展 ............................................... 4 UG 的特點(diǎn) ............................................... 5 本畢業(yè)設(shè)計(jì)課題的任務(wù)、要求、技術(shù)難點(diǎn)及要達(dá)到的預(yù)期效果 ...... 6 2 材料與塑件分析 ..................................................... 7 塑件分析 ............................................... 7 塑件材料分析 ............................................ 8 確定塑件設(shè)計(jì)批量 ........................................ 9 計(jì)算塑件的體積和質(zhì)量 ..................................... 9 3 選擇塑件的分型 面 ................................................... 11 4 標(biāo)準(zhǔn)件的選擇 ...................................................... 12 標(biāo)準(zhǔn)模架的選取 ......................................... 12 標(biāo)準(zhǔn)緊固件的選用 ....................................... 13 5 注塑機(jī)的選擇 ...................................................... 13 注塑機(jī)的概述 ........................................... 13 注塑機(jī)的選擇 ........................................... 15 注塑機(jī)的參數(shù)校核 ....................................... 15 最大注塑量校核 .........................................................................................15 注射壓力校核 .............................................................................................15 鎖（合）模力校核 ......................................................................................16 模具安裝尺寸的校核 ..................................................................................17 開模行程的校核 .........................................................................................17 6 澆注系統(tǒng)的設(shè)計(jì) .................................................... 18 概述 .....................................................................................................................18 流道設(shè)計(jì) ..............................................................................................................19 主流道設(shè)計(jì) ................................................................................................18 分流道設(shè)計(jì) ................................................................................................19 冷料穴和拉料桿的設(shè)計(jì) ...............................................................................21 澆口設(shè)計(jì) ..............................................................................................................21 7 冷卻系統(tǒng)的設(shè)計(jì) .................................................... 23 冷卻時(shí)間計(jì)算 .......................................................................................................23 冷卻參數(shù)計(jì)算 .......................................................................................................24 冷卻回路的設(shè)計(jì) ....................................................................................................26 8 頂出和導(dǎo)向機(jī)構(gòu)的設(shè)計(jì) ............................................... 27 頂出機(jī)構(gòu)的設(shè)計(jì) ....................................................................................................27 頂出機(jī)構(gòu)的分類 .........................................................................................27 頂出機(jī)構(gòu)的設(shè)計(jì)原則 ..................................................................................27 頂出機(jī)構(gòu)的基本形式 ..................................................................................27 導(dǎo)向機(jī)構(gòu)的設(shè)計(jì) ....................................................................................................29 導(dǎo)柱和導(dǎo)套的設(shè)計(jì) ......................................................................................29 導(dǎo)柱和導(dǎo)套在模板上的布置 ........................................................................30 復(fù)位機(jī)構(gòu)的設(shè)計(jì) ....................................................................................................30 復(fù)位桿復(fù)位 ................................................................................................31 彈簧復(fù)位和頂桿兼作復(fù)位 ...........................................................................31 9 成型零件的設(shè)計(jì) .................................................... 32 凹模的設(shè)計(jì) ...........................................................................................................32 凸模的設(shè)計(jì) ...........................................................................................................32 成型零件工作尺寸計(jì)算 .....................................................................