【正文】 遼寧科 技大學(xué)成人教育學(xué)院畢業(yè)設(shè)計(jì)（論文） 第 I 頁(yè) 4900KN 冷剪機(jī)設(shè)計(jì) 遼寧科 技大學(xué)成人教育學(xué)院畢業(yè)設(shè)計(jì)（論文） 第 II 頁(yè) 摘 要 冷剪機(jī)是在冶金工業(yè)中經(jīng)常用來(lái)對(duì)軋件進(jìn)行切頭、切尾或者切定尺的機(jī)械設(shè)備。作為剪切機(jī)械中的一種，冷剪機(jī)在冶金、航空、國(guó)防工業(yè)，以及印刷等輕工業(yè)均有廣泛的應(yīng)用。早期的冷剪機(jī)由于結(jié)構(gòu)比較笨重而且沒(méi)有快速換刀裝置，導(dǎo)致生產(chǎn)效率比較低，產(chǎn)品的質(zhì)量也不高。為此，我們?cè)O(shè)計(jì)了結(jié)構(gòu)更為緊湊的曲柄連桿上切式斜刃剪切機(jī)。該剪切機(jī)主要包括剪切部分及傳動(dòng)部分。剪切部分采用上切式斜刃刀片的剪切方式，大大降低了剪切力。傳動(dòng)部分采用電機(jī)通過(guò)聯(lián)軸器帶動(dòng)減速器代替原來(lái)的帶傳動(dòng)，避免了由于彈性滑動(dòng)帶 來(lái)的功率損失，采用圓盤(pán)式摩擦離合器控制減速器與開(kāi)式齒輪之間的離合，通過(guò)曲軸帶動(dòng)連桿的上下運(yùn)動(dòng)來(lái)完成剪切動(dòng)作。該機(jī)構(gòu)的特點(diǎn)在于用大齒輪代替飛輪，聯(lián)軸器傳動(dòng)代替帶傳動(dòng)。該剪切機(jī)的生產(chǎn)效率比較高且生產(chǎn)成本較低，適用于中小型棒材生產(chǎn)線或是無(wú)縫鋼管管坯的剪切。 關(guān)鍵詞 ： 圓盤(pán)式摩擦離合器 ， 曲柄連桿 ， 斜刀刃 ， 剪切機(jī) ， 聯(lián)軸器傳動(dòng) The Design of 4900KN Cold Shear Abstract Cold shear machines are usually used to e to carry on the machine equipments that slices the head, slices the tail and to slice appointed dimension of the piece in the rolling 遼寧科 技大學(xué)成人教育學(xué)院畢業(yè)設(shè)計(jì)（論文） 第 III 頁(yè) metallurgy industry. The conduct and actions shears to slice the machine in of a kind of, cold shear the machine in the metallurgy, aviation, industry of defenses, and print the etc., the light industry all has the extensive application. Earlier period of cold shear the machine because the structure is more bulky and did not change the knife the device quickly, cause produce the efficiency lower, the quantity of the product is also not high. For this, we designed the structure to even connect the pole for the crank of the tightly packed up the inclined blade of slice type shears to slice the machine. This shear to slice the machine to mainly include to shear to slice the part and spread to move the part. Shear to slice the part adoption up the inclined blade razor blade of slice type shears to slice the way, lowering to shear to slice the dint consumedly. Spread to move the part adoption electrical engineering to arouse to decelerate the machine to replace through the adapter coupling to take to spread to move originally, avoid because of the power loss that the flexibility glide bring, adopt of a dish type friction clutch control deceleration machine and the open type wheel gear to leave to match, arouse to connect the top and bottom of the pole through the song stalk sport to plete to shear to slice the action. The characteristics of that anization lies in to replace the flywheel with the big wheel gear, the adapter coupling spreads to move to replace to take to spread to move. Should shear the production efficiency of slice the machine higher and the production cost is lower, being applicable to the medium small scaled and good material production line or no slot steel pipe billet to shear to slice. Keyword: A dish type of rubs clutch， Brace and link， Oblique blade， Shear machine， The adapter coupling transmission 目 錄 摘 要 ................................................................... II Abstract ................................................................. II 1 緒論 .................................................................... 1 剪切機(jī)的用途 ........................................................ 1 剪切機(jī)的分類 ........................................................ 1 斜刃剪切機(jī) ...................................................... 1 遼寧科 技大學(xué)成人教育學(xué)院畢業(yè)設(shè)計(jì)（論文） 第 IV頁(yè) 平行剪刃剪切機(jī) .................................................. 2 圓盤(pán)式剪切機(jī) .................................................... 3 沖型剪切機(jī) ...................................................... 3 聯(lián)合剪切機(jī) ...................................................... 3 型材棒料剪切機(jī) .................................................. 3 剪切機(jī)常見(jiàn)事故 ...................................................... 4 傳動(dòng)方案的選擇和評(píng)述 ................................................ 4 剪切機(jī)機(jī)械傳動(dòng)裝置的作用及選擇 .................................. 4 剪切機(jī)機(jī)械傳動(dòng)裝置的防護(hù) ........................................ 5 剪切機(jī)機(jī)械傳動(dòng)裝置的過(guò)載保護(hù)裝置 ................................ 5 2 剪切機(jī)參數(shù)及電機(jī)容量的選擇 .............................................. 7 設(shè)計(jì)的基本要求 ...................................................... 7 剪切機(jī)構(gòu) ............................................................ 7 主要參數(shù)的確定 ...................................................... 8 刀片傾斜角 α .................................................... 8 刀片尺寸 ........................................................ 8 剪刃行程 ........................................................ 8 剪切次數(shù) ........................................................ 9 剪切力的計(jì)算與校核 .................................................. 9 電機(jī)功率的 選 擇 ..................................................... 12 靜力矩的組成 ................................................... 13 ? ??fH? 曲線 ................................................... 14 剪切力矩 pM 和摩擦力矩 fM ...................................... 14 電動(dòng)機(jī)功率的計(jì)算 ............................................... 18 3 傳動(dòng)方案 ............................................................... 19 3. 1 傳動(dòng)步驟 .......................................................... 19 電動(dòng)機(jī) ......................................................... 19 聯(lián)軸器 ......................................................... 19 齒輪 ........................................................... 20 離合器 ......................................................... 20 曲軸 ........................................................... 21 曲柄連桿機(jī)構(gòu) ................................................... 21 壓板機(jī)構(gòu) ....................................................... 22 上刀臺(tái)平衡機(jī)構(gòu) ................................................. 22 4 主要零件的強(qiáng)度校核 ..................................................... 23 聯(lián)軸器的計(jì)算 ....................................................... 23 聯(lián)軸器的類型的選擇 ............................................. 23 聯(lián)軸器的載荷計(jì)算 ............................................... 23 齒輪強(qiáng)度的校核 ..................................................... 23 曲軸的強(qiáng)度校核 .................................................... 29 5 潤(rùn)滑方式的選擇 ......................................................... 31 遼寧科 技大學(xué)成