【正文】
m,取e=16mm吊耳環(huán)結(jié)構(gòu)示意圖(如圖12)圖12吊鉤的尺寸大小根據(jù)下列公式計(jì)算:K=C1+C2=16+14mm=30mmH≈=30mm=24mmh≈ H=24mm=12mmr≈K/6=30/6mm=5mmb≈(~) δ=(~) 8mm=~20mm,取b=18mmH1按結(jié)構(gòu)確定,取H=32mm吊鉤結(jié)構(gòu)示意圖(如圖13)圖13定位銷 為了保證剖分式箱體軸承座孔的加工與裝配精度,在箱體連接凸緣的長(zhǎng)度方向兩端各設(shè)1個(gè)圓錐定位銷,兩銷間的距離盡量遠(yuǎn)些,以提高定位精度。箱體時(shí)減速器中的一個(gè)重要零件,是被用來(lái)支承和固定軸系零件保證傳動(dòng)零件的正確嚙合,使箱體內(nèi)零件具有良好的潤(rùn)滑及密封,箱體的形狀較為復(fù)雜,其重量占整個(gè)減速器總重量的一半,因此箱體結(jié)構(gòu)設(shè)計(jì)對(duì)減速器工作性能,制造工藝,材料消耗很重要及成本有很大影響,設(shè)計(jì)時(shí)必須全面考慮。中間軸②段鍵槽鍵寬b為8mm,鍵高h(yuǎn)為7mm,鍵長(zhǎng)L為70mm。m2許用補(bǔ)償量徑向△Y軸向△XmmmmHL1902177。又由式得:考慮到該軸段上裝聯(lián)軸器和有鍵槽,故將估算直徑加大3%~5%,~。中間軸的設(shè)計(jì)(1)選擇軸的材料,確定許用應(yīng)力選擇軸的材料為45鋼,調(diào)質(zhì)處理。=1086N(標(biāo)準(zhǔn)的法向嚙合角α=20176。由表 《軸的常用材料及部分機(jī)械性能》查得抗拉強(qiáng)度極限σB=650MPa,屈服極限σS=360MPa,σ1=300MPa,彎曲疲勞極限再由表《軸的許用彎曲應(yīng)力》得許用彎曲應(yīng)力[σ1b] =60MPa。mm(2)載荷系數(shù),查表《載荷系數(shù)》表取K=(3)齒數(shù)z1和齒寬系數(shù)ψd小齒輪齒數(shù)z1取25,因i=,則大齒輪齒數(shù)z2=65,因直齒圓柱齒輪傳動(dòng)為對(duì)稱布置,而齒輪齒面又為軟齒面,由表《齒寬系數(shù)》取齒寬系數(shù)ψd =1(4)許用接觸應(yīng)力由《接觸疲勞強(qiáng)度極限》圖查得σHlim1=560MPa,σHlim2=530MPa由表《安全系數(shù)SH和SF》查得安全系數(shù)SH=1N1=60njLh=601(85240)=108N2=N1/i=108/=108查圖《接觸疲勞壽命系數(shù)》得ZNT1=,ZNT2=由式可得[σH] 1=ZNT1σHlim1/ SH=560/1 MPa= MPa[σH] 2=ZNT2σHlim2/ SH=530/1 MPa=故由表《漸開(kāi)線齒輪的模數(shù)》取標(biāo)準(zhǔn)模數(shù)m=3主要尺寸計(jì)算(1)分度圓直徑dd1=m z1=325mm=75mmd2=m z2=365mm=195mm(2)齒寬bb2=b=ψd+3176。η22(2)應(yīng)使傳動(dòng)裝置的結(jié)構(gòu)尺寸較小、重量較輕。 齒輪盤(pán)磨機(jī)傳動(dòng)裝置設(shè)計(jì)畢業(yè)論文盤(pán)磨機(jī)傳動(dòng)裝置設(shè)計(jì)【摘 要】齒輪傳動(dòng)是現(xiàn)代機(jī)械中應(yīng)用最廣的一種傳動(dòng)形式。 機(jī)械傳動(dòng)The Design of The Plate Mill’s GearJia GenqinClass of 0601 Machinery ManufacturingAbstract:Wheel gear’s spreading to move is a the most wide kind of the application spreads to move a form in the modern main advantage BE:spreads to move to settle, work than in a moment steady, spread to move accurate credibility, can deliver space arbitrarily sport and the motive of the of two stalks;Power and speed scope;applies are wide;spreads to move an efficiency high;work is dependable, service life long;Outline size outside the is small, structure tightly wheel gear constituted to;from wheel gear, stalk, bearings and box body decelerates a machine, useding for prime mover and work machine or performance organization of, have already matched to turn soon and deliver a function of turning , the application is extremely extensive in the modern machine. Local deceleration machine much with the wheel gear spread to move, the pole spread to move for lord, but widespread exist power and weight ratio small, or spread to move ratio big but the machine efficiency lead a low are also many weaknesses on material quality and craft level moreover, the especially large deceleration machine’s problem is more outstanding, the service life isn’t deceleration machine of abroad, with Germany, Denmark and Japan be placed in to lead a position, occupying advantage in the material and the manufacturing craft specially, decelerating the machine work credibility like, service life it spreads to move a form to still take settling stalk wheel gear to spread to move as lord, physical volume and weight problem, don’t also resolve likeThe direction which decelerates a machine to is the facing big power and spread to move ratio, small physical volume, high machine efficiency and service life to grow greatly nowadays the connecting of machine and electric motor body structure is also the form which expands strongly, and have already produced various structure forms and various products of power model close to ten several in the last yearses, control a technical development because of the modern calculator technique and the number, make the machine process accuracy, process an efficiency to raise consumedly, pushed a machine to spread the diversification of movable property article thus, the mold piece of the whole machine kit turns, standardizing, and shape design the art turn, making product more fine, the beauty turns.Bee a set a machine material in 21 centuries medium, the wheel gear is still a machine to spread a dynamic basic tool machine and the craft technical development, pushed a machine to spread to move structure to fly to develop spreading to move the electronics control, liquid in the system design to press to spread to move, wheel gear, take the mixture of chain to spread to move, will bee bee soon a box to design in excellent turn to spread to move a bination of academics that is in spread move the design crosses, will bee new spread a movable property article the important trend of the development.Key words: Reduction gear Bearing gear mechanical drive一、傳動(dòng)裝置的總體設(shè)計(jì) (一)傳動(dòng)方案分析傳動(dòng)裝置的布局要求:在分析盤(pán)磨機(jī)傳動(dòng)裝置方案時(shí),首先應(yīng)該滿足機(jī)械設(shè)計(jì)的基本要求,此外還要保證工作可靠,傳動(dòng)效率高,結(jié)構(gòu)簡(jiǎn)單,工藝性能好等,同時(shí)應(yīng)注意常用機(jī)械傳動(dòng)方式的特點(diǎn)及在布局上的要求:(1)帶傳動(dòng)平穩(wěn)性好,能緩沖吸振,但承載能力小,宜布置在高速級(jí);(2)鏈傳動(dòng)平穩(wěn)性差,且有沖擊、振動(dòng),宜布置在低速級(jí);(3)蝸桿傳動(dòng)放在高速級(jí)時(shí)蝸輪材料應(yīng)選用錫青銅,否則可選用鋁鐵青銅;(4)開(kāi)式齒輪傳動(dòng)的潤(rùn)滑條件差,磨損嚴(yán)重,應(yīng)布置在低速級(jí);(5)錐齒輪、斜齒輪宜放在高速級(jí);根據(jù)工作需要,所以,盤(pán)磨機(jī)與減速器之間應(yīng)該選用錐齒輪進(jìn)行傳動(dòng)。但兩級(jí)減速器的總中心距和總傳動(dòng)比相同時(shí),傳動(dòng)比分配方案不同,減速器的外廓尺寸也不同。η4== kW各軸輸入轉(zhuǎn)矩Ⅰ軸Ⅱ軸Ⅲ軸主軸: 運(yùn)動(dòng)和動(dòng)力參數(shù) 軸名 參數(shù)Ⅰ軸Ⅱ軸Ⅲ軸主軸轉(zhuǎn)速n/(r/min)輸入功率P/kW輸入轉(zhuǎn)矩T/(N=77176。d1=175mm=75mmb1=b2+5mm=80mm(3)標(biāo)準(zhǔn)中心距a(4)齒頂圓直徑da(我國(guó)規(guī)定的標(biāo)準(zhǔn)值為h a*=1,c*=)齒頂高h(yuǎn) a=h a*m=m=3mmd a1=d1+2h a=75+23=81mmd a2=d2+2h a=195+23=201mm(5)齒根圓直徑df齒根高h(yuǎn) f=(h a*+c*)m= m=d f1=d1-2h f=75-2=d f2=d2-2h f=195-2=按齒根彎曲疲勞強(qiáng)度校核根據(jù)式則校核合格。(2)按扭矩強(qiáng)度估算軸徑根據(jù)表《常用材料的[τ]值和C值》查得C=107~118。)法向力:2)作水平面內(nèi)的彎矩圖(圖1c)。由表 《軸的常用材料及部分機(jī)械性能》查得抗拉強(qiáng)度極限σB=650MPa,屈服極限σS=360MPa,σ1=300MPa,彎曲疲勞極限再由表《軸的許用彎曲應(yīng)力》得許用彎曲應(yīng)力[σ1b] =60MPa。由設(shè)計(jì)手冊(cè)取標(biāo)準(zhǔn)直徑d=18mm(3)設(shè)計(jì)軸的結(jié)構(gòu)1)確定軸的固定方式要確定軸的結(jié)構(gòu)形狀,必須先確定軸上零件的裝配順序和固定方式。因?yàn)閺椥灾N聯(lián)軸器傳遞轉(zhuǎn)矩的能力大、結(jié)構(gòu)更簡(jiǎn)單、耐用性好,用于軸向竄動(dòng)較大、正反轉(zhuǎn)或啟動(dòng)頻繁的場(chǎng)合。中間軸④段鍵槽鍵寬b為8mm,鍵高h(yuǎn)為7mm,鍵長(zhǎng)L為40mm。減速器根據(jù)其毛坯制造方法和箱體部分等可分為:鑄造箱體和焊接箱體箱體大多數(shù)時(shí)鑄造而成,材料多采用灰鑄鐵HT200或HT250,對(duì)于重型箱體,為了提高承受振動(dòng)和沖擊的能力,可采用球墨鑄造或鑄鋼。 起蓋螺釘 起蓋螺釘上的螺紋長(zhǎng)度要大于箱蓋連接凸緣的厚度,釘桿端部要做成圓柱形,加工成大倒角或半圓形,以免頂壞螺紋。r/mim(d為軸承內(nèi)徑,n為轉(zhuǎn)速)時(shí),宜采用脂潤(rùn)滑。主視圖按軸線水平布置,再在鍵槽處的剖面視圖。 零件圖圖紙(1)輸出軸圖紙(具體見(jiàn)打印A3圖紙,圖號(hào)為003)(2)從動(dòng)齒輪圖紙(具體見(jiàn)打印A3圖紙,圖號(hào)為002)(二)裝配圖繪制裝配圖的作用裝配圖表明減速器各零件的結(jié)構(gòu)及其裝配關(guān)系,表明減速器整體結(jié)構(gòu),所有零件的形狀和尺寸,相關(guān)零件間的聯(lián)接性質(zhì)及減速器的工作原理,是減速器裝配、調(diào)試、維護(hù)等的技術(shù)依據(jù),表明減速器各零件的裝配和拆卸的可能性、次序及減速器的調(diào)整和使用方法等。