論文標(biāo)準(zhǔn)WORD格式排版 32頁 附總裝圖—01—0#.dwg 裝配圖AO.dwg 裝配圖中間軸A2.dwg 部件圖—02—剪切機(jī)構(gòu)0#.dwg 機(jī)蓋.dwg 機(jī)座A1.dwg 零件圖—03—大齒輪2#.dwg

摘要
擺動剪切機(jī)是安裝在型鋼熱連機(jī)前，用于切頭切尾和卡鋼事故的處理剪。隨著國民經(jīng)濟(jì)的發(fā)展，對型鋼產(chǎn)品數(shù)量的要求更高。本設(shè)計為型鋼設(shè)計切頭的擺動剪，設(shè)計中對擺動剪的局部做了改進(jìn)。
首先，本文討論了型鋼軋機(jī)在國民經(jīng)濟(jì)中的地位，并對300/500機(jī)組平面布置示意圖的概況進(jìn)行了整體的介紹。并介紹了擺動剪的結(jié)構(gòu)特點和研究的內(nèi)容與方法。根據(jù)現(xiàn)有設(shè)備狀況，對設(shè)備生產(chǎn)中存在的問題進(jìn)行分析，對主要部件結(jié)構(gòu)做了合理的選用。然后，根據(jù)機(jī)組原始參數(shù)初選主電機(jī)容量，對其進(jìn)行發(fā)熱校核和過載校核，對主要零件進(jìn)行強(qiáng)度校核。對齒輪做了強(qiáng)度計算，對曲軸計算了彎曲應(yīng)力，彎扭合成應(yīng)力；校核了危險斷面；以及滑塊損壞的改進(jìn)設(shè)計及潤滑方法，簡單計算擺動剪的可靠性和經(jīng)濟(jì)評價。
通過以上工作，擺動剪切機(jī)在使用壽命、產(chǎn)品質(zhì)量理論上應(yīng)該有一定的提高。設(shè)計內(nèi)容有實際價值。該擺動剪作為加熱爐前的方坯切頭飛剪。

關(guān)鍵詞：剪切機(jī)，擺動，主傳動

A Design of Swing Scissors
Abstract
Swing scissors is installed before the sharp steel of hot continuous rolling mills, which is used to cut the head and end of the steel and deal with the jamming of the steels.With the development of the national economy, the request of the sharp steels’s quality is higher than before. In the thesis, the cutting of the head of the swing scissors is researched, and makes some improvments of partial strcture.
First, the thesis has discussed the position of the rolling mill of sharp steel in the national economy, and makes the general instruction for 300/500 unit plane arrangement. Next, introducing the structural characteristic of the swing cutting and the method and content of the research .According to exising equipment condition, analysing the exist problem in equipment production, the strcture of the major parts are reasonable to choosed. Then,according to the primitive parameter of the unit, I primarily choose the capacity of the main motor, and make the heat examination and overload examination, choose if satisfying the requirement, otherwise choose again until the examination is satisfyed. I make the strength examination for major element. As to gears, I make the strength calulation; as to crank, I caculated the curving stress and the crooked synthesis stress, examinationing the dangerous cross section, as well as the improment of the damages of the slide and the method of lubrication. Finally I caculated the economy appraisal and the reliablity of swing scissors.
Through the work of this thesis, swing scissors should certain raise in service life and product quality theoretically, but need the unceasing improvement in practice.

Key-word: scissors, swing, main drive


目錄
1 緒論 1
1.1 課題選擇的背景和目的 1
1.2 熱軋型鋼軋機(jī)的國內(nèi)外發(fā)展趨勢 1
1.2.1 軋機(jī)布置向半連續(xù)化或全連續(xù)化發(fā)展 2
1.2.2 軋制工藝改革出現(xiàn)了切分軋制、熱軋冷拔 2
1.2.3 軋機(jī)結(jié)構(gòu)改造 提高軋制速度 2
1.2.4 加熱爐控制 2
1.2.5 冷卻工藝改造 2
1.3 剪切機(jī)的種類和用途 2
1.3.1 擺動式剪切機(jī) 2
1.3.2 滾動式飛剪 2
1.3.3 曲柄偏心式飛剪 3
1.4 擺動剪研究的內(nèi)容和方法 3
1.4.1 擺動剪在型鋼連續(xù)機(jī)組布置和作用 3
1.4.2 型鋼熱連軋機(jī)的生產(chǎn)工藝 3
1.4.3 擺動剪的結(jié)構(gòu)特點和研究的內(nèi)容與方法 4
2 擺動剪設(shè)計方案的選擇和評述 5
2.1 擺動式剪切機(jī)設(shè)計方案的選擇 5
2.1.1 擺動式剪切機(jī)傳動簡圖 5
2.1.2 擺動剪的剪切過程 5
2.2 擺動剪設(shè)計方案評述 5
2.2.1 減小擺角 6
2.2.2 增加許用擺角 6
3 剪切力的計算 8
3.1 剪切速度和剪切力 8
3.1.1 擺動剪設(shè)計參數(shù) 8
3.1.2 剪切機(jī)構(gòu)主要參數(shù)的確定 8
3.1.3 剪切速度的確定 9
3.1.4 剪切力的計算 11
3.2 剪切力矩的計算 12
4 電機(jī)型號及容量的選擇 14
5 主要零件的強(qiáng)度計算 16
5.1 齒輪的強(qiáng)度計算 16
5.1.1 按齒面接觸強(qiáng)度設(shè)計 16
5.1.2 計算 17
5.1.3 按齒根彎曲強(qiáng)度設(shè)計 18
5.1.4 幾何尺寸計算 19
5.2 曲軸的強(qiáng)度計算 19
5.2.1 曲軸的尺寸和材料性能 19
5.2.2曲軸的強(qiáng)度校核 20
5.3 切向鍵的計算 21
5.4 滑塊損壞的改進(jìn)設(shè)計 23
6 試車方法和對控制系統(tǒng)的要求 24
6.1 試車要求 24
6.2 維護(hù)規(guī)程 24
7 設(shè)備的可靠性及經(jīng)濟(jì)分析 25
專題 潤滑方法選擇的探討 26
1 摩擦和潤滑的概念 26
2 液體潤滑和半固體潤滑比較 27
3 剪切機(jī)設(shè)備潤滑方法 27
結(jié)論 29
致謝 30
參考文獻(xiàn) 31
附錄 32