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畢業(yè)論文-錘片粉碎機設(shè)計(留存版)

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【正文】 的各類型的破碎機的結(jié)構(gòu)特點、技術(shù)特點以及使用情況后,我們確定了設(shè)計一種新型的破碎機的課題,就是將錘式破碎機和反擊式破碎機的優(yōu)點結(jié)合起來。 c.機體的結(jié)構(gòu)設(shè)計不夠簡便,維護調(diào)整時的拆裝要花費一些時間。s 150th anniversary celebrations and will 沈陽工業(yè)大學(xué)本科生畢業(yè)設(shè)計(論文) 28 attend City39。t remember his appearance. 童年時,覺得壓歲錢和新衣服是過年必備,但是隨著年齡的推進,會越來越發(fā)現(xiàn),那些東西根本就可有可無;初中時,以為要有一場暗戀才意味著真正的成長,但三年過去后,自己心平氣和的寫同學(xué)錄的時候,突然就發(fā)現(xiàn)是不是真正的成長了,好像并沒有那么重要了;然后到了 高中,覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個句點,但畢業(yè)晚會的時候最終還是被沈陽工業(yè)大學(xué)本科生畢業(yè)設(shè)計(論文) 29 梗塞在了咽喉,后來再次站在他曾經(jīng)揮汗如雨的球場,看著他投過籃球的球框時,突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。我們假裝一切仿佛都不曾發(fā)生,以此試圖忘卻傷 痛,可就算隱藏得再好,最終也還是騙不了自己。 From: The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet (Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻,天空是陰暗的,空氣里有著剛下過雨之后的清新因子。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。因此,設(shè)計中也存在一些不足之處,有待進一步的設(shè)計改造。注油管可用兩端有螺紋的鋼管。 由圖 44(a)知,由于此時 ? 21 ??? ,兩個支撐反力的合力 21 FF與 的合力 F 將把被切物料沿刃口向外推出,即在切割時產(chǎn)生滑移,不能保證穩(wěn)定切割。 HV 和 zV 和 ? 的關(guān)系為 HV / zV =tan? 由圖 42 分析可知,滑切角顯然不為零,最大為 660 ,能實現(xiàn)滑切。 本章小結(jié) 由于錘片粉碎機不是一次成型的,而且每次成型所需的功率都不一樣,所以我把它分為四次成型,結(jié)果 40%時所需功率最大,最后確定電動機的功率為11kw。mm 2[]2qncdVN M P f D? ?? ? ?? ( )65 2 0 . 1[ 4 . 4 8 5 1 0 4 . 2 5 3 1 0 0 . 8 0 . 0 6 7 5 ] 7 . 0 1 92 4 0 0 . 8?? ? ? ? ? ? ??( )kw 綜合上述的計算結(jié)果總匯與表 31 表 31 計算結(jié)果總匯 成形量 計算結(jié)果 40% 100% 簡體直徑( mm) 簡體曲率半徑 R’(mm) 初始變形彎矩M1(kgf nR R M變 化 到 時 的 板 料 變 形 彎 矩 ? ? 411n DRRMMM ???????? ??? 10??kgfmm 6)板料送進時的摩擦阻力矩 TM ? ?2 2caT a c a aDdM f P P m P D?? ? ? 10?? kgf 需要卷制錐 筒時,把離和器上的定位螺釘松開,然后使蝸輪空轉(zhuǎn)達到只升降左機架中升降絲桿的目的。對稱三輥卷板結(jié)構(gòu)簡單、緊湊、質(zhì)量輕、易于制造等優(yōu)點。一般對稱彎曲時為板厚 6~ 20 倍。但因彈性體的體積不變,壓力便向四面?zhèn)鬟f,產(chǎn)生強度很高,但分布均勻的連續(xù)作用的反壓力,迫使板料與剛性輥連續(xù)貼緊,目的是使它隨著旋轉(zhuǎn)而滾成桶形。到 2021 年,中國的錘片粉碎機生產(chǎn)量和消費量可能位居世界第二位,僅次于美國。主運 動是指構(gòu)成錘片粉碎機的上輥和下輥對加工板材的旋轉(zhuǎn)、彎折等運動,主運動完成錘片粉碎機的加工任務(wù)。凡是鋼材成型為圓柱型,幾乎都用錘片粉碎機輥制。其在汽車,軍工等各個方面都有應(yīng)用。輔運動是錘片粉碎機在卷板過程中的裝料、下料及上輥的升降、翹起以及倒頭架的翻轉(zhuǎn)等形式的運動。而其在裝備工業(yè)上的投入力度將會大大加強,市場的競爭也愈演愈烈,產(chǎn)品的更換也要求錘片粉碎機裝備工業(yè)不斷在技術(shù)和工藝上取得更大的優(yōu)勢: ,錘片粉碎機工業(yè) 1000 萬以上投入的項目達近百項; 群; ,促使各地政府都紛紛投資(國家投資、外資和民間資本)錘片粉碎機制造。上輥壓人下輥的深度,既彈性層的變形量,是決定所形成彎曲半徑的主要工藝參數(shù)。由于剩 余直邊在校圓時難以完全消除,所以一般應(yīng)對板料進行預(yù)彎,使剩余直邊接近理論值。經(jīng)過相比較下最終決定采用錘片粉碎機。 主電機的選擇和計算 上下輥的參數(shù)選擇計算 1. 已知設(shè)計參數(shù) 加工板料: Q235A[1] 屈服強度:σ s=235MPa 抗拉強度:σ b=420MPa 輥材: 50 Mn 屈服強度:σ s=930MPa 抗拉強度:σ b=1080MPa 硬度: HBS 229? HB 板厚: 6 12s? ~ mm 板寬: b=2021mm 滾筒與板料間的滑動摩擦系數(shù): ?m 滾筒與板料間的滾動摩擦系數(shù): f = 上輥傳動壓下系統(tǒng) 下輥住傳動系統(tǒng) 沈陽工業(yè)大學(xué)本科生畢業(yè)設(shè)計(論文) 10 無油潤滑軸承的滑動摩擦系數(shù): 39。mm 7)拉力在軸承中所引起的摩擦阻力矩 3nM ? ? ? ?1 553 1303 2 . 9 2 1 3 . 8 1 1 0 0 . 0 6 1 . 5 1 9 1 0240n T cM M m dM D ???? ? ? ? ? ? ? ?kgfmm 7 51. 01. 01. 0 1. 02 2 1039。mm) 107 村料受到的最大變形彎矩 M(kgf對錘片粉碎機選擇的參數(shù)進行校核,結(jié)果上下輥的強度都合格。 下面用一直刃切刀來進一步闡述滑切省力原理,如圖 43 所示。 由圖 44(b)知,由于此時 ? 21 ??? 。一端固定在機蓋上,一端用螺母固定在機座上??傮w來說,其存在的主要問題有: a. 兩級轉(zhuǎn)子的空間位置有待進一步的研究。t charge you more than 35% of your pensation if you win the case. you39。t really grow up, it seems is not so important。突然想到那件藍格子襯衫;那些被折成各種各樣形狀的信紙;那段從街角深巷伊始的友誼;還有那場還沒有開始就宣告了終結(jié)的邂逅計劃 …… 那些年那些天的非做不可,終于和青春一樣,都將在我們的人生中謝幕。ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. 沈陽工業(yè)大學(xué)本科生畢業(yè)設(shè)計(論文) 31 If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。 instead of letting the world soften us, we let it drive us deeper into ourselves. We try to deflect the hurt and pain by pretending it doesn’t exist, but although we can try this all we want, in the end, we can’t hide from ourselves. We need to learn to open our hearts to the potentials of life and let the world soften us. 生活發(fā)生不幸時,我們常常會關(guān)上心門;世界不僅沒能慰藉我們,反倒使我們更加消沉。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。s antiracism taskforce, is in London for the Football Association39。 b. 反擊板的安裝方式較為繁瑣,安裝時需花費較多的時間。 沈陽工業(yè)大學(xué)本科生畢業(yè)設(shè)計(論文) 25 第五章 結(jié)論 本次設(shè)計總體來說較為成功。 由此可知,保證鉗住物料穩(wěn)定切割的條件是:鉗住角須小于物料與定刀片之間摩擦角之和, ? 21 ??? 在本設(shè)計中刀與料的相對位置圖如圖 45 所示,進行鉗住物料條件的分析 圖 45 刀與料的相對位置圖 由圖 45 可知,切刀在旋轉(zhuǎn)過程中, ? 的最大值為 38? ,同時由 經(jīng)驗可知,通常 ?1= 32? , ?2 = 18? ,所以只要 ? 小于 50? 就可以了?;袝r,因切割速度 V偏離了刀刃的法
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