三維造型軟件在模具中的應用按鈕注射模設計畢業(yè)論文-免費閱讀
【正文】 在本次設計中，魏老師曾多次對我在設計中遇到的困難和疑問進行耐心細致的指導，讓我感受到了親人般的關懷和溫暖。11 結束語 通過對應用Pro／E進行塑料模具設計方法的研究，掌握它的設計過程和方法。制品的表面有銀絲及波紋塑料含有水分和揮發(fā)物；料溫太高或太低；注射壓力太小；流道和澆口的尺寸太大；塑件內應力太大。 試模試模時，塑件上?？赡軙霈F各種缺陷，為此必須進行原因分析、排除故障。至此完成一個成型周期，進入下一個成型周期。因此，注射機的開模行程足夠。是否需要冷卻系統(tǒng)可作以下設計計算。材料T8A，淬火處理，硬度50～55HRC，由《塑料注射成型工藝及模具》表47（）查得導柱（12mm）有關參數如下表31所示： 表31 帶頭導柱 （） /mm簡圖d(f7)基本尺寸1216202532405063極限偏差（k6）基本尺寸1216202532405063極限偏差++++++++16202532404856704681040205025252563712580903240100根據所選參數由Pro/E繪制導柱三維圖如下圖34所示： 圖34 帶頭導柱導套與導柱相配合，用以確定動、定模的相對位置，導套孔滑動部分按H8/f7或H7/f7的間隙配合，導套外徑與模板常采用H7/k6配合。經換算得主流道大端直徑D=8mm，球形凹坑深度取5mm(一般取5~8mm).為了使熔料順利進入分流道，在主流道出料端設置r=1~3mm的圓弧過渡，這里取r=1mm。由分型面的選擇原則：分型面應設在零件截面最大的部位，且不影響零件的外觀，如AA面，塑件包緊動模型芯而留在動模，模具結構簡單。 表面質量分析。延長注射時間有利于降低內應力，防止縮孔和變形。按鈕設計的二維圖和三維圖如下圖11和圖12所示： 圖11 二維圖 （a） (b) 圖12 三維圖本次設計的任務是完成按鈕注射模具設計, 主要內容包括: (1) 根據經驗及指導老師提供的資料,利用三維繪圖軟件PRO/E繪制出按鈕三維立體圖。用模具生產出來的零件所表現出來的高精度、高復雜程度、高一致性、高生產率和低消耗，是其他制造方法所不能比擬的。在Pro/E中建立分型面的目的是利用與工件全相交的分型面來分割工件，拆出形成腔體的各個模具體積塊。 關鍵詞 按鈕/注射模/分型面/Pro/ETHREEDIMENSIONAL MODELING SOFTWARE IN THE MOLD DESIGNABSTRACTThe designing methods of injection structure of the button were mainly introduced in this article .First the technological characteristics of the button were analyzed ,including the main parts of structure of the spare part of the plastics ,the selection of size tolerance and accurate degree of the spare parts of the plastics .According to the above ,the forming equipment was selected .Then parting line was selected ,the number of cavities was assured ,and an parison selection was made between two layout types of cavities .A specific introduction was made on feed system of the injection mould ,cooling system ,heating system ,the selection of standard mould bases ,and the design of the structure of forming parts .Meanwhile the heating system ,the cooling system ,working dimension of forming parts were assured .And the corepulling distance and ejecting distance were calculated .At last the technological parameters of the forming equipment were calculated .The basic thoughts for 3D assemble design of injection mold based on Pro／E isintroduced．The designing of the layout and the process of 3D assemble are instantiated withEMX by an example．It is of certain reference value to the 3D assemble of mold design by othersoftware．bring forward that the design of the injection mold by Pro／E brings greateconomy benefint . Production proved that the mould structure was designed cleverly ,the mould can be operated easily ,the service life of mould is long and plastic parts products meet technical requirement . KEY WORDS the button ,injection mould ,parting line ,pro/e
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