【正文】
,設(shè)計(jì)出滿足要求的模具。 本次設(shè)計(jì)圓滿完成了塑料制品三通管的注塑模具的設(shè)計(jì)。其主要內(nèi)容包括注塑成型部分的設(shè)計(jì)、模具裝配圖的設(shè)計(jì)以及主要零部件的工藝分析三個部分。 第一部分注塑成型部分的設(shè)計(jì)是本次設(shè)計(jì)的關(guān)鍵。設(shè)計(jì)的關(guān)鍵在于對型腔的設(shè)計(jì),正確選擇分型面,根據(jù)零件結(jié)構(gòu)確定抽芯、頂出、脫模結(jié)構(gòu),以及澆注系統(tǒng)、排氣系統(tǒng)和冷卻、加熱系統(tǒng)。確定主要成型零件、結(jié)構(gòu)件的結(jié)構(gòu)形式,計(jì)算成型零件的工作尺寸。 第二部分模具裝配圖的設(shè)計(jì),根據(jù)所選注射機(jī)型號來選 取模架。根據(jù)主要成型零件、結(jié)構(gòu)件的結(jié)構(gòu)形式以及零件結(jié)構(gòu)和已確定的連接、定位、導(dǎo)向裝置繪制模具裝配草圖以及重要零件圖。 第三部分主要零部件的工藝分析,根據(jù)設(shè)計(jì)和繪圖,對主要注塑成型零件和導(dǎo)向零件進(jìn)行工藝分析。 針對 三通管 的具體結(jié)構(gòu),該模具是點(diǎn)澆口的雙分型面注射模具。由于塑件 三面通孔,故要設(shè)計(jì)側(cè)向分型抽芯機(jī)構(gòu),模具采用單行腔結(jié)構(gòu), 在于簡化機(jī)構(gòu),使模具外形縮小,大大降低了模具的制造成本。通過模具設(shè)計(jì)表明該模具能達(dá)到 三通管 的質(zhì)量和加工工藝要求。 本人在這次設(shè)計(jì)中最大的感受是:理論與實(shí)踐必須相結(jié)合,只有將正確的理論應(yīng) 用于實(shí)踐中,才能真正發(fā)揮理論的價值,才能更深刻地了解和掌握理論的真正內(nèi) 武漢紡織大學(xué) 2021屆畢業(yè)設(shè)計(jì)論文 43 涵;要做到理論與實(shí)踐相結(jié)合必須有一定的理論基礎(chǔ)和豐富的實(shí)踐經(jīng)驗(yàn),在這方面,我很欠缺,還有待于在日后的進(jìn)一步學(xué)習(xí)和工作中來彌補(bǔ)和提高。此外,設(shè)計(jì)工作是一項(xiàng)繁重的工作,必須具有嚴(yán)謹(jǐn)細(xì)致的工作作風(fēng)和頑強(qiáng)的決心和毅力。 武漢紡織大學(xué) 2021屆畢業(yè)設(shè)計(jì)論文 44 參考文獻(xiàn) [1] 齊衛(wèi)東 . 塑料模具設(shè)計(jì)與制造 . 北京 : 高等教育 出版社, 2021. [2] 何銘新,等 . 機(jī)械制圖 . 北京 : 高等教育出 版社, 2021. [3] 楊占堯 . 塑料模具典型結(jié)構(gòu)設(shè)計(jì)實(shí)例 . 北京:化學(xué)工業(yè)出版社, 2021. [4] 唐增寶 , 常建娥 . 機(jī)械設(shè)計(jì)課程設(shè)計(jì) .武漢 : 華中科技大學(xué)出 版社, 2021. [5] 張維僵 . 注 塑 模具技術(shù)手冊 .北京: 化學(xué) 工業(yè)出版社, 2021. [6] 譚雪松, 等 . 新編塑料模具設(shè)計(jì)手冊 . 北京: 人民郵電 出版社, 2021. [7] 李剛 . Pro/ENGINEER塑料模具設(shè)計(jì) . 北京: 中國青年 出版社, 1991. [8] 王伯平 . 互換性與測量技術(shù)基礎(chǔ) . 北京:機(jī)械工業(yè)出版社, 2021. [9] 楊占堯,等 .復(fù)雜 精密 高效 長壽命 注塑模具典型結(jié)構(gòu)圖例 . 北京: 化學(xué)工業(yè)出版社 , 2021. [10] GBT 125552021 塑料注射模模架 [M]. 北京: 中國標(biāo)準(zhǔn)出版社 , 2021. [11] 宋玉恒 . 塑料注射模具設(shè)計(jì)實(shí)用手冊 . 北京: 航空工業(yè) 出版社, 1994. [12]GB/T13581993 普通圓柱螺旋彈簧尺寸 .上海:上??梢姵霭嫔?, 1985. [13 GB/T 內(nèi)六角圓柱頭螺釘 .北京:化學(xué)工業(yè)出版社, 2021. 武漢紡織大學(xué) 2021屆畢業(yè)設(shè)計(jì)論文 45 附 錄 模具設(shè)計(jì)結(jié)構(gòu)圖 武漢紡織大學(xué) 2021屆畢業(yè)設(shè)計(jì)論文 46 武漢紡織大學(xué) 2021屆畢業(yè)設(shè)計(jì)論文 47 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。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。s Zhangye city during their journey to Kazakhstan, May 5, 2021. 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, 2021. 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 2021. Then they wil l e back, carrying specialty products from Kazakhs tan 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。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。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。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。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 performers of the troupe still tour the region39。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。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。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 Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes- all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2021 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li