【正文】 d mm?? 齒寬 128575b mmb mm?? （ 5）齒根彎曲疲勞強(qiáng)度驗算 齒形系數(shù) 由圖 210,查得 應(yīng)力修正系數(shù) 由圖 221 查得 螺旋角系數(shù) 由圖 222 查取 重合度系數(shù) 齒向載荷分布系數(shù) 由圖 29 查取 9 許用彎曲應(yīng)力校核 試驗齒輪的齒根彎曲疲勞極限 由表 217 查最小安全系數(shù) 由圖 218 確定尺寸系數(shù) 由圖 232 確定彎曲壽命系數(shù) 另外取 合格 靜強(qiáng)度校核 因傳動無嚴(yán)重過載，故不作靜強(qiáng)度校核 減速器外部零件的設(shè)計計算 普通 V形帶傳動 選擇帶的型號 查表 6－ 4 得 ? , 則計算功率為 PC=KA N m m?? 應(yīng)力校正系數(shù) 計算當(dāng)量彎矩 截面 C 是危險 截面 N mm?? 13 受力和彎矩圖 校核 許 用彎曲應(yīng)力 為 2 .2 5eb M M PaW? ?? 符合要求 低速 軸的 設(shè)計與校核 計算項目 計算內(nèi)容 計算結(jié)果 材料的選擇 為 45 號鋼，正火處理，硬度 HB=170~217 估算軸徑 2d =c322Pn =1153 = 加大 3%， d= d=40mm 14 齒輪圓周力 2 ? 齒輪徑向力 2 ? 齒輪軸向力 2 ? 豎直面反力及彎矩 BVF F N?? ? 水平面反力及彎矩 ? ? 39。 ② 在裝配過程中軸承裝配要保證裝配游隙。 參考文獻(xiàn) [1] 王之櫟 ， 王大康 .機(jī)械設(shè)計綜合課程設(shè)計［Ｍ］ .北京 : 機(jī)械工業(yè)出版社 ， [2] 王之櫟 ， 馬綱 ， 陳心頤 .機(jī) 械設(shè)計［Ｍ］ .北京： 航空航天大學(xué)出版社 ， ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，非做不可了。 From the corner at the beginning of deep friendship。 3. Ask your heart what it wants 傾聽內(nèi)心 We’re often confused at the next step to take, making pros and cons lists until our eyes bleed and our brains are sore. Instead of always taking this approach, what if we engaged a new part of ourselves that isn’t usually involved in the decision making process?我們常對未來猶疑不定，反復(fù)考慮利弊直到身心俱疲。如果我們一味逃避生活中的悲傷，悲傷只會變得更強(qiáng)烈更真實 —— 悲傷原本只是稍縱即逝的情緒，我們卻固執(zhí)地耿耿于懷 By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to 。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。s governing body, has also ordered an immediate investigation into the referee39。 負(fù)載實驗：在額定轉(zhuǎn)速及額定載荷下，實驗至油溫不再升高為止。 經(jīng) 計 算 ， 小 齒 輪 軸 dn 值為 *10^4mm*r/min ， 大 齒 輪 軸 dn 值為*10^4mm*r/min，因此， 軸承宜用油脂潤滑。 帶輪樣式選擇 小帶輪：輻板式；大帶輪：孔板式 11 草圖 第六章 軸的設(shè)計計算和校核 高速軸的設(shè)計與校核： 計算項目 計算內(nèi)容 計算結(jié)果 材料選擇 為 45 號鋼 ， 正火 處理，硬度 HB=170~217 估算軸徑 1d =c311Pn =1153 = 選取直徑比 d 大 3% d=25mm 齒輪圓周力 1 ? 2 ? 12 齒輪 徑向力 1 ? 2 ? 齒輪軸向力 1 ? 豎直面反力及彎矩 ? 水平面反力及彎矩 ? ? 39。P 0 ( )dP P kw?? 10 ( )P P kw???帶 21 5 ( )P P kw????齒 輪 軸 承 32 ( )P P kw????聯(lián) 軸 器 軸 承 5 （四） 輸入轉(zhuǎn)矩 T 10 43 .58 ( )T T i N m?? ? ?帶 帶 21 16 0T T i????齒齒 輪 軸 承 (N﹒ m) 32 T i????齒 帶聯(lián) 軸 器 軸 承 (N﹒ m ) （五） 輸出轉(zhuǎn)矩 39。 （每班工作 8小時），要求減速器設(shè)計壽命為 10年，大修期為 3年，小批量生產(chǎn)。傳動裝置是否合理將直接影響機(jī)器的工作性能、重量和成本。P=1 3= 根據(jù) 1n 、 cP 查表和圖 6－ 8，選取 Z 型帶 確定帶輪基準(zhǔn)直徑、驗算帶速 查資料表 6－ 5， 6－ 6，選取 1 80d mmd ? 帶速帶速驗算： V=n1 3 8 4 3 5 .7HCM N m m?? 39。 ③ 軸 承部位油脂的填入量要小于其所在軸承腔空間的 2/3。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。 Have declared the end of the encounter that haven39。與其一味顧慮重重，不如從局外人的角度看待決策之事。 Whenever a painful situation arises in your life, try to embrace it instead of running away or trying to mask the hurt. When the sadness strikes, take a deep breath and lean into it. When we run away from sadness that’s unfolding in our lives, it gets stronger and more real. We take an emotion that’s fleeting and make it a solid event, instead of something that passes through us. 25 當(dāng)生活中出現(xiàn)痛苦的事情時，別再逃跑或隱藏痛苦，試著擁抱它吧；當(dāng)悲傷來襲時，試著深呼吸，然后直面它。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous s