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本科畢業(yè)論文-耳機外殼成型工藝分析及模具設(shè)計-免費閱讀

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【正文】 Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to bee pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentine39。下模座如 圖 。1.61 . 66.5 8φ 1 2 . 8 6 50 0 . 1 1 a 打料塊尺寸圖 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 27 導(dǎo) 柱 2 12020? GB/ 導(dǎo) 套 2 236520 ?? GB/ 上模座采用 4個對稱 布置的 6M 螺 釘 固定,并加 2個 6? 的 圓 柱 銷進 行準(zhǔn)確定位。 具體尺寸 見圖 (a)。 壓邊圈 內(nèi)形與拉深凸模間隙配合,外形受落料凹模內(nèi)孔限制。 3)彈簧 根據(jù)模具結(jié)構(gòu)和卸料力, N493?卸F ,初定彈簧根數(shù)為 n=4,且裝在卸料螺釘上。其外形尺寸與凹模外形一致,即為 mm80? 。 具體尺寸 見圖 (a)。φ 3φ 1 2 . 0 6 50 0 . 0 3 5φ 1 2 . 0 6 5+ 0 . 0 1 8+ 0 . 0 0 7φ 1 64163517R 1 . 11 . 60.80.4 50 . 4φ 0 . 0 4 AA a 凸模尺寸 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 18 固定板和墊板 凸凹模固定板厚度: ? ? ? ? mmmmDH p )~(~~1 ???? ,查表 [2],取標(biāo)準(zhǔn)值 Hp=20mm。 0 . 0 21 2 . 7 5 177。 凹模強度校核: mmmmmmpH 1110/1210510 33m in ??? , 式中 minH —— 凹模最小壁厚; P —— 沖裁力,即 沖F 。最大臺 階 是用臺肩保 證 凸模在卸料 時 不被拉出。落料拉深復(fù)合模,常采用落料正裝,拉深倒裝式。只需按照公稱壓力進行選擇。則雙面間隙為: ? ? mmmmZ in ???? ? ? mmmmZ a x ???? ? ? mmmmZZ inm a x ???? 查表 [2],根據(jù)落料件的基本尺寸為 ,得 凸模極限下偏差 mmp ??? ;凹模極限上偏差 mmd ??? 。 零件為圓筒形件,不變薄部分:底部厚度為 ;。結(jié)合它的使用特征及材料特點,通過正確的工藝分析和工藝計算,制定出合理的加工工藝過程和模具結(jié)構(gòu),有助于提高工件的質(zhì)量、延長工件的使用壽命、提高生產(chǎn)效率、降低生產(chǎn)成本,從而可以創(chuàng)造出好的生產(chǎn)效益。 The mold cost directly relates the workpiece the cost as well as the mold production enterprise39。 外殼是耳機的基本組成部分,其質(zhì)量優(yōu)劣對整個耳機性能的影響十分明顯。 關(guān)鍵詞 :模具 沖壓 復(fù)合模 拉深復(fù)合 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 2 ABSTRACT Mold design is the foundation which the mold makes, the reasonable correct design is correctly makes the mold the guarantee。 But the mold standardization is the mold design and the manufacture foundation, to largescale, the specialized production mold has the extremely vital role, the mold standardization degree height is the mold industrial development level symbol . The shell is an the basic ponent of earphone, the impact of whose quality is very obvious to the performance of the entire earphone. Although generally having regular profile, the shell as a precision stamping part, has small dimensions and calls for high accuracy, the distribution of whose structure , is close. Because it should be fitted with the inner structure and bore some external forces, thus it’s very important to design a reasonable process and die structure to ensure that. The research was major in analyzing of the forming process and calculating the technology of the shell, and bined with numerical simulation, developing an reasonable process and die structure, and determining the working process is : blankingironing. In this paper, the writer designs twodimensional assembly drawing and part drawing by using CAD,and threedimensional part drawing by using the mon 3D modeling software—— Proe, which are assembled by using assembly plat to test fitting situation. Finally we rerceive the reasonable assembly drawing and all parts’ part drawings. Keywords: mold design。其化學(xué)成分主要是 C、 Si、 Mn、 P、 S、 Al、 Ni、 Cr、 Cu 等。 計算毛坯直徑 ( 1)計算制件體積 1V 按制件圖(圖 )上基本尺寸進行計算: 221 ???????? ??V 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 6 計算模具的刃口尺寸 1)落料模具刃口尺寸: 圓形凸模和凹模,可采用分開加工,按式 、 計算工作部分尺寸。 ????。 第四章 模具結(jié) 構(gòu)設(shè)計 根據(jù)確定的工藝方案和零件的形狀特點、精度要求、所選設(shè)備的主要技術(shù)參數(shù)、模具制造條件以及安全生產(chǎn)等選定其中沖模的類型及結(jié)構(gòu)形式。 凸凹模壁厚 mmmmb 2 ???,查表 [2]得料厚為 ~ 的低碳鋼復(fù)合模最小壁厚為( ~) mm,能保證足夠強度,故可以采用復(fù)合模。 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 14 b 三維圖 圖 凸凹模 φ 1 2 . 8 6 5+ 0 . 0 60φ 1 7 . 2 6 70 0 . 0 2φ 1 4φ 2 2+ 0 . 0 2 1+ 0 . 0 0 8φ 2 9520454 5176。 4 5 176。 具體尺寸 見圖 (a)。 凸模固定板厚度: ? ? ? ? mmmmDH p )~(~~1 ???? ,查表 [2],取標(biāo)準(zhǔn)值 Hp=16mm。 具體尺寸如下圖 φ5 6200.851 . 60 . 84 φ 1 4均 布Aφ 3 00 . 84 M 6均 布AAA Aφ 2 2+ 0 . 0 2 10φ 0 . 0 5 Aφ 0 . 1 A通 孔 2 φ 6+ 0 . 0 1 20 ( 與 件 2 配 合 同 時 加 工 )1 . 6均 布φ 8 0 a 凸凹模固定板尺寸 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 19 b 三維 圖 圖 凸凹模固定板 φ5 6φ 2 31.6164φ 8 01 2 . 1 2 5+ 0 . 0 1 804 M 8均 布A0 . 8φ 1 7AAA A4 φ 5均 布0.8 0 . 82 φ 8+ 0 . 0 1 50 ( 與 件 2 5 配 合 同 時 加 工 )均 布φ 0 . 0 4 Aφ 0 . 1 A a 凸模固定板 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 20 b 三維圖 圖 凸模固定板 60 . 8φ 5622.5176。 0 . 0 2 13.45177。取 mml 539。 具體尺寸 見圖 (a)。φ 1 7 a 壓邊圈尺寸 齊魯工業(yè)大學(xué) 2021屆本科生畢業(yè)設(shè)計(論文) 26 b 三維圖 圖 打料塊 模架 考慮到送料及操作方便,且該模具精度要求一般,小型模具。 下模座采用 4個對稱 布置的 M8螺 釘 固定,并加 2個 8? 的 圓 柱 銷進 行準(zhǔn)確定位。s largest virgin forest, and known for its spring and ecological environment, Arxan is marveled at by many tourists as the purest land on earth. You cannot miss out the Autumn of Arxan. It is definitely the best with brightlycolored scenery full of emotions. Autumn in the northern part of the country es earlier than the South. A September rain followed by the footprints of Autumn brings more colors to the once emerald green mountain and blooming grassland. Shutterbugs flock to see for themselves the marvel of splendid colors around the mountains and waters, many of whom have travel a long distance and even camp here only to capture a moment of the nature wonder. The silver birch turns golden, while the larch is still proudly gre
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