中文摘要

本課題設計建筑上的臥式鋼筋切斷機的工作原理是：采用電動機經一級三角帶傳動和二級齒輪傳動減速后,帶動曲軸旋轉,曲軸推動連桿使滑塊和動刀片在機座的滑道中作往復直線運動,使活動刀片和固定刀片相錯而切斷鋼筋。
根據電機的工作環(huán)境選擇電動機類型，采用臥式安裝，防護式電機，鼠籠式三相異步電動機。選擇三級減速，先是一級帶減速，再兩級齒輪減速。一級帶傳動，它具有緩沖、吸振、運行平穩(wěn)、噪聲小、合過載保護等優(yōu)點，并安裝張緊輪。兩級齒輪減速，齒輪傳動可用來傳遞空間任意兩軸間的運動和動力，并具有功率范圍大，傳動效率高，傳動比準確，使用壽命長，工作安全可靠等特點。動力由電動機輸出,通過減速系統(tǒng)傳動,把動力輸入到執(zhí)行機構。由于傳動系統(tǒng)作 的是回轉運動,而鋼筋切斷機的執(zhí)行機構需要的直線往復運動,為了實現(xiàn)這種轉換,可以采用曲柄滑塊機構,盤行凸輪移動滾子從動件機構,齒輪齒條機構。本課題采用曲柄滑塊機構作為本機械的執(zhí)行機構 。

關鍵詞  切斷 建筑  鋼筋  齒輪  曲柄滑塊
 

外文摘要

Title  lie type steel cutting machines’designing                                
                                                     
Abstract
This article introduces a kind of architectural lie type steel cutting machines. Its operating principles are: It use electric motors level triangle belt transmission and secondary gear transmission to slowdown. Then, it drives the crank rotate, The crank connected to slide block and moving blades in the slippery way make the back and forth straight line sport, makes the moving blades and the fixed blade shear and cut steel.  
According to the working environment choice the type of electric motors, using horizontal installation, protection of the electrical, squirrel-cage three-phase asynchronous motor. Option three slowdown,
first level belt slowdown, followed by the secondary gear deceleration. First level with the introduction of automated, because it has a buffer, absorb shock and operate smoothly, small noise, and can protect the over loading. Then introduce a secondary gear deceleration slowdown, because gear transmission can be used to transmit arbitrary space between the two axis movement and momentum, and the scope of power, transmission efficient transmission accurately, long using life, such as safe and reliable character. Power output by electric motors through slow down transmission system to import power to the executive body. As the system make rotation movement, The steel cutting machine needs the back and forth straight line sport ,in order to achieve this transformation, we can use c slider-crank  institutions or gear and rack. I decided to consider realistic conditions using slider-crank as the executing machinery.

 Keywords  cutting   architectural    reinforcing steel dar   gear   slider-crank

目 錄

1 引言…………………………………………………………………………………… 1
1.1概述…………………………………………………………………………………………1
1.2題目的選取……………………………………………………………………………… 2
1.3鋼筋切斷機的工作原理…………………………………………………………………2
2 電機的選擇…………………………………………………………………………2
2.1 鋼筋切斷機需用力計算 …………………………………………………… 2
2.2 功率計算 ……………………………………………………………… 3
3 傳動結構設計 ………………………………………………………………… 3
3.1 基本傳動設計計算………………………………………………………… 3
3.2帶傳動設計……………………………………………………………………5
3.3齒輪傳動設計 ………………………………………………………………… 6
3.4軸的校核 ……………………………………………………………………14
3.5 鍵的校核…………………………………………………………………… 22
3.6軸承的校核 ………………………………………………………………… 23
4 鋼筋切斷機的摩擦 磨損和潤滑 ………………………………………………… 25
結論 ………………………………………………………………………………… 27
致謝 ………………………………………………………………………………… 28
參考文獻………………………………………………………………………………29

題目的選取

本次畢業(yè)設計的任務是臥式鋼筋切斷機的設計。要求切斷鋼筋的最大直徑14mm，切斷速度為15次/分。
在設計中通過計算和考慮實際情況選則合適的結構及參數(shù)，從而達到設計要求，同時盡可能的降低成本，這也是一個綜合運用所學專業(yè)知識的過程。

說明書.doc (30頁)
開題報告.doc
目錄.doc
任務書.doc
摘要.doc
A3齒輪二.dwg
A3齒輪一.dwg
A3導桿.dwg
A3二軸.dwg
A3飛輪.dwg
A1機架圖.dwg
A2三軸.dwg
受力分析圖.dwg
A2一軸.dwg
A2原理圖.dwg
A3張緊輪.dwg
A0總裝圖.dwg