課程設(shè)計(jì)-二級(jí)圓柱齒輪主減速器設(shè)計(jì)-文庫(kù)吧資料
2025-01-19 19:18本頁(yè)面
【正文】 sk you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as aagainst 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 it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed undert your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, see you don39。因?yàn)榱慵D和裝配圖都是用CAD來作圖的，便很好地復(fù)習(xí)了一遍CAD的使用操作功能。很多數(shù)據(jù)要通過設(shè)計(jì)手冊(cè)和課本查取，雖然在做這個(gè)課程設(shè)計(jì)的過程中會(huì)遇到很多的困難，但一步一腳印，不懂得地方經(jīng)過請(qǐng)教老師或者和同學(xué)討論之后，還是可以弄明白的。十 小結(jié) 這次的課程設(shè)計(jì)，我有了很大的收獲，通過系統(tǒng)地運(yùn)用學(xué)過的相關(guān)知識(shí)來解決問題，不管是在結(jié)構(gòu)設(shè)計(jì)中對(duì)零件的強(qiáng)度進(jìn)行校核，還是在用CAD繪圖的過程中，我發(fā)現(xiàn)都有很多要注意的細(xì)節(jié)。九、潤(rùn)滑與密封(潤(rùn)滑與密封方式的選擇、潤(rùn)滑劑的選擇)雙級(jí)減速器內(nèi)傳動(dòng)零件(齒輪)采用浸油潤(rùn)滑，,采用的浸油深度應(yīng)為輪齒半徑。V帶根數(shù)為4F0==七、聯(lián)軸器的選擇計(jì)算低速軸與工作機(jī)鼓輪軸用聯(lián)軸器連接，由于彈性柱銷聯(lián)軸器結(jié)構(gòu)簡(jiǎn)單，更換柱銷方便，緩和沖擊，吸收振動(dòng)，故選用彈性柱銷聯(lián)軸器。軸的受力如下圖所示：3 軸II和軸III的結(jié)構(gòu)設(shè)計(jì)如下圖：軸II： 軸III:六、鍵的校核 高速軸安裝齒輪處的軸徑d=41,輪轂的寬度B=65 選普通平鍵，鍵長(zhǎng)L=B28=55，取L=56鍵的規(guī)格：bh=128工作長(zhǎng)度l=44校核鍵的工作強(qiáng)度鍵合格安裝帶輪處的軸徑d=25,輪轂的寬度B=60 選普通平鍵，鍵長(zhǎng)L=B28=50，取L=50鍵的規(guī)格：bh=87工作長(zhǎng)度l=42校核鍵的工作強(qiáng)度鍵合格中間軸安裝齒輪處的軸徑d=46,輪轂的寬度B=60 選普通平鍵，鍵長(zhǎng)L=B28=50，取L=50鍵的規(guī)格：bh=149工作長(zhǎng)度l=36校核鍵的工作強(qiáng)度 鍵合格安裝齒輪處的軸徑d=46,輪轂的寬度B=55 選普通平鍵，鍵長(zhǎng)L=B28=45，取L=45鍵的規(guī)格：bh=149工作長(zhǎng)度l=31校核鍵的工作強(qiáng)度低速軸安裝齒輪處的軸徑d=76,輪轂的寬度B=50 選普通平鍵，鍵長(zhǎng)L=B28=40，取L=40鍵的規(guī)格：bh=149工作長(zhǎng)度l=36校核鍵的工作強(qiáng)度不合格取鍵長(zhǎng)L=70，工作長(zhǎng)度l=48鍵合格裝聯(lián)軸器處的軸徑d=60,輪轂的寬度B=107 選B型鍵，鍵長(zhǎng)L=B28=97，取L=107鍵的規(guī)格：bh=1811工作長(zhǎng)度l=79校核鍵的工作強(qiáng)度鍵合格七、滾動(dòng)軸承的選擇及計(jì)算由條件知，減速器工作期限十年，兩班制工作，則軸承的預(yù)計(jì)壽命為（一）、對(duì)中間軸上滾動(dòng)軸承的選擇及核計(jì)算中間軸滾動(dòng)軸承的選用角接觸球軸承，如圖所示 對(duì)軸承進(jìn)行受力分析計(jì)算 1）徑向力軸向力計(jì)算當(dāng)量動(dòng)載荷：：對(duì)于軸承1：對(duì)于軸承2：計(jì)算軸承的壽命： 兩年換檢修一次軸承。確定模數(shù)為mn=幾何尺寸計(jì)算1）中心距 2）修正螺旋角 3）分度圓直徑 4）齒寬b=取B4=50mm，B3=B3+5=55mm6 齒輪的幾何參數(shù)齒頂高：齒根高：齒全高：齒頂圓直徑： 齒跟圓直徑：高速軸低速軸齒輪1齒輪2齒輪3齒輪4齒數(shù)z(mm)25942594齒頂圓直徑（mm）齒跟圓直徑（mm）
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