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球形的凹坑,兩者應嚴密的配合,避免高壓塑料熔體溢出,凹坑球半徑R 2應比噴嘴球頭半徑R 1大12mm。主流道尺寸如圖3所示:圖 3 主流道設計尺寸根據(jù)設計手冊查得SYS10型注射機噴嘴的有關(guān)尺寸:噴嘴前端球面孔徑:d 1=;噴嘴前端球面半徑:SR 1=12mm;SR2=SR1+(12)mm ; d=d1+()mm;取主流道球面半徑:SR 2=13mm;取主流道的小端直徑:d=3mm;定位環(huán)直徑為100mm,定位環(huán)埋入5mm; 13球面配合高度:h=3~5mm。2)各型腔之間距離恰當,應有足夠空間排布冷卻水道、螺釘?shù)?,并有足夠截面積承受注塑壓力。6)當分流道較長時,在分流道末端應開冷料穴,以容納冷料,保證塑件的質(zhì)量。長度一般在8~30mm 之間,一般根據(jù)型腔布置適當加長或縮短,但最短不宜小于 8mm。本設計采用非平衡式布局,如圖 4 所示: 14 圖4 分流道布局形式 澆口設計澆口直接與塑件相連,把塑料熔體引入型腔。澆口的斷面形狀常用圓形和矩形,本設計采用斷面形狀為圓形的澆口,其直徑 D=,澆口的長度 L 盡量短,對減小塑料熔體流動阻力和增加流速均勻有利,通常取 L=~2mm,初選 L=1mm。 型腔徑向尺寸計算(此題公差為自己標注) 16以最大徑向尺寸計算,測量得 Ls 為 148mm,塑件精度選為 MT2 對應的型腔加工精度為IT9,以該精度查型腔的尺寸公差表,按照 A 類受模具活動部分影響的尺寸公差查表得△=, δ C=△/3=Lm=[148+148(+)/2(3/4)]=149 0+042 型芯外徑尺寸計算以型芯最大徑向尺寸計算,測量得 Ls 為 mm,塑件精度選為 MT2 對應的型腔加工精度為 IT9,以該精度查型腔的尺寸公差表,按照 A 類受模具活動部分影響的尺寸公差查表得△=, δ C=△/3=Lm=[+(+)/2+(3/4) ]= 型腔深度尺寸計算由 測量得型腔深度為 11mm,以 IT9 精度等級制造型腔查手冊,按 B 類不受模具活動部分影響的尺寸公差值查表得△=,δ C =Lm=[11+11(+)/2(3/4)] 0+=+ 型芯高度尺寸計算 測量得塑件高度尺寸為 ,以 IT9 精度等級制造查手冊得,按 A 類不受模具活動部分影響的尺寸公差值查表得△=,δ Z=hm=[+(+)/2+(2/3) ] = 17第六章 脫模推出機構(gòu)的設計與模架的選用 脫模推出機構(gòu)的設計制件推出(頂出)是注射成型過程中的最后一個環(huán)節(jié),推出質(zhì)量的好壞將最后決定制品的質(zhì)量,因此,制品的推出是不可忽視的。2)保證塑件不因推出而變形損壞 為了保證塑件在推出過程中不變形、不損壞,設計時應仔細分析塑件對模具的包緊力和粘附力的大小,合理的選擇推出方式及推出位置。4)良好的塑件外觀 推出塑件的位置應盡量設在塑件內(nèi)部,或隱蔽面和非裝飾面,對于透明塑件,尤其要注意頂出位置和頂出形式的選擇,以免推出痕跡影響塑件的外觀質(zhì)量。所以,從經(jīng)濟上和時間上考慮決定采用方案1。 鎖模力的校核 模具所需的最大鎖模力應小于或等于注射機的額定鎖模力,其關(guān)系按下式校核: P 腔 F≤P 鎖 =150kN式中 P 腔 ——模具的型腔壓力;F——塑件與澆注系統(tǒng)在分型面上的投影面積(mm 2);P 鎖 ——注射機的額定鎖模力(N)。故澆注系統(tǒng)在分型面上的投影面積A1=3262+π(6/2) 2=。為了調(diào)節(jié)型腔的溫度,需在模具內(nèi)開設冷卻水通道,通過模具調(diào)節(jié)機調(diào)節(jié)冷卻介質(zhì)的溫度。22本次設計的塑件為一般大小,所以在本設計中應該用階梯式水路冷卻如圖 圖 14 水路的示意圖第九章 試模及模具維修模具制成以后,在交付生產(chǎn)以前,都應進行試模。 模具的安裝模具的安裝包括預檢、裝模、緊固、校正頂桿頂出距離,調(diào)節(jié)閉模松緊速和接通冷卻水管或模溫控制系統(tǒng)。然后上緊壓板,壓板必須壓得平穩(wěn),不允許歪斜。(6)檢查溫控系統(tǒng) 接通冷卻水管,模具溫度控制器,熱流道溫度控制,模具上的液壓管道等。3)開始試模時,原則上選擇低壓、低溫、中速成型。大致有三種情況:(1)型心、導柱、推桿彎曲或損壞;(2)型腔局部損壞而大部分讓是好的;(3)使用一段時間后分型面不嚴密。模具應注意經(jīng)常的檢查維護,不要等到損壞嚴重了才維修24第十章 設計結(jié)果 3D 效果圖片預覽25動模部分定模部分26凸模凹模第十一 章加工工藝表和零件列表工藝過程卡名稱 模具零件加工工藝 產(chǎn)品名稱電話按鍵零件名稱 凹模材料 45 尺 寸 ** 件 數(shù) 127工藝設備工序號工序名稱工 序 內(nèi) 容 要 求加 工 設 備 夾具 刀具 量具備 注1 定位 點鉆各孔中心(包 括倒角 普通銑床 平口 鉗 NC 點鉆 游標卡尺2鉆孔 鉆 通孔 鉆 1 248。5鉆 16248。這對我們在今后的生產(chǎn)實踐工作中無疑是個很好的幫助,也間接性的為今后的工作經(jīng)驗有了一定的積累。感謝老師三年來對我孜孜不倦的教誨,對我成長的關(guān)心和愛護。在自己的努力前提下,以及老師與同學們的熱心幫助下,我的畢業(yè)設計順利地完成了。從塑件的工藝分析、塑料材料工藝性能分析到模具的具體結(jié)構(gòu)及其成型零件加工工藝設計的全過程,都作了比較詳細的說明,這也是大學三年中所學的理論知識的綜合運用過程。s Zhangye city during their journey to Kazakhstan, May 5, 2022. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2022. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2022. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, who told him a story about his friendship with a solider from Shenyang, capital of Northeast China39。s to e and recapping the key points. This device, not used in the original, is culturally understandable but ar。s cultural foray overseas, has been widely panned by its home audience. Retitled Empresses in the Palace, the American version has been shortened from its original 76 episodes at 45 minutes each, to six 90minute episodes. The quick pacing threw off many native viewers, who are accustomed to a more leisurely daytimesoapstyle narrative rhythm. (Chinese TV stations would run two or three episodes every day.) I did not finish the fulllength version and found the truncated one not difficult to follow. What39。s villages and entertain nomadic families, but their fame has spread around the world. On May 16 and 17, nearly 100 singers and dancers from the troupe performed at Beijing39。t help but sing the folk songs, Nasun says. The vastness of Inner Mongolia and the lack of entertainment options for people living there, made their lives lonely. The nomadic people were very excited about our visits, Nasun recalls. We didn39。在此,向老師及同學們致以衷心的感謝,同時歡迎老師與同學們給予指正和幫助!參考文獻1 ,20222 《塑料模設計手冊》 3 版[M].北京:機械工業(yè)出版社,2022313 [M].上海:上??茖W技術(shù)出版社,20224 ,2022 5 [M].北京:機械工業(yè)出版社,2022 6 ,2022 7 [M].北京:化學工業(yè)出版社,20228 [M].北京:機械工業(yè)出版社,20229 李曉沛,張琳娜,[M]. 上海:上??茖W技術(shù)出版社,202210 吳宗澤,[M].北京:高等教育出版社,2022 電話聽筒后蓋模具設計與制造工藝(論文)為你提供優(yōu)秀的畢業(yè)論文參考資料,請您刪除以下內(nèi)容,O(∩_∩)O 謝謝!??! A large group of tea merchants on camels and horses from Northwest China39。通過這次畢業(yè)設計,不但鞏固自己所學的專業(yè)理論知識,加強了自己對模具設計步驟的認識,豐富了自己在模具設計方面的經(jīng)驗,學會了在遇到困難時,能夠清醒地分析問題,利用所學知識解決問題,而且為日后的工作打下了堅實的基礎。三年的風風雨雨,我們一同走過,充滿著關(guān)愛,給我留下了值得珍藏的最美好的記憶。從這里走出,對我的人生來說,將是踏上一個新的征程,要把所學的知識應用到實際工作中去。6 孔 普通銑床 平口鉗鉆頭 游標卡尺10 銅公 放電 火花機 游標卡尺編制者/日期吳鵬東/.1 審核者/日期 零件列表序號 代號 名稱 數(shù)量 材料備注