數(shù)控機(jī)床機(jī)械傳動(dòng)設(shè)計(jì)
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- 數(shù)控機(jī)床機(jī)械傳動(dòng)設(shè)計(jì)
摘要
本文研究的主要是數(shù)控機(jī)床的機(jī)械傳動(dòng)裝置的設(shè)計(jì)，傳動(dòng)裝置在各外界因素和自身因素的影響下傳動(dòng)精度會(huì)大大降低，例如幾何精度與變形產(chǎn)生的誤差、機(jī)床的熱變形以及運(yùn)動(dòng)間的摩擦和傳動(dòng)間隙等因素。這些都是影響數(shù)控機(jī)床傳動(dòng)精度的重要因素，我也是從這入手，從各個(gè)方面著手提高數(shù)控機(jī)床的傳動(dòng)精度。
我完成的設(shè)計(jì)主要包括一些原始數(shù)據(jù)的擬定，再根據(jù)擬定的參數(shù)，進(jìn)行傳動(dòng)方案的比較，確定傳動(dòng)方案。然后計(jì)算各傳動(dòng)副的傳動(dòng)比及齒輪齒數(shù)，再估算齒輪的模數(shù)和各軸的軸徑，并對(duì)齒輪和軸的強(qiáng)度、剛度進(jìn)行校核。除此之外，還要對(duì)箱體內(nèi)的主要結(jié)構(gòu)進(jìn)行設(shè)計(jì)，一些零件的選型，從而完成對(duì)整個(gè)機(jī)械傳動(dòng)系統(tǒng)的設(shè)計(jì)。
關(guān)鍵詞：數(shù)控機(jī)床 傳動(dòng)系統(tǒng) 精度 設(shè)計(jì)
Abstract
Of this study is the design of the transmission tools of CNC machine , mechanical transmission gear under the influence of external factors and the factors driving accuracy will greatly reduce the Accuracy, such as geometric accuracy and deformation of the thermal deformation of machine tools, as well as the movement between the friction and the transmission gap. These are the transmission accuracy of CNC machine tools, I am also from this start begin to improve the transmission accuracy of CNC machine tools, from all aspects.I completed the design include the formulation of some of the raw data, according to the parameters of the proposed transmission scheme compared to determine the transmission scheme. Then calculate the transmission ratio of the pair and gear of the transmission, and then estimate the modulus of the gear and the axis of the shaft, and gear and shaft strength and stiffness of the check. In addition, we must design the main structure of cabinets, some parts of the selection, thus completing the design of the mechanical drive system as a whole.Keywords: accuracy of CNC machine tool drive system design
Keywords：NC machine tool; driving system; Accuracy；design
目錄
1.引言...........................................................................4
2.主傳動(dòng)方案的擬定 10
2.1 初定傳動(dòng)方案 10
2.2 方案的選擇 11
3.動(dòng)力計(jì)算 17
3.1 齒輪的計(jì)算(計(jì)算過程參考文獻(xiàn)2 第八章) 17
3.2 電磁離合器的選擇和使用 26
4.軸的設(shè)計(jì)和驗(yàn)算 28
4.1 軸的結(jié)構(gòu)設(shè)計(jì) 28
4.2 軸的強(qiáng)度校核(以Ⅰ軸為例) 29
4.3 軸的剛度校核(以Ⅰ軸為例) 32
5．主軸變速箱的裝配設(shè)計(jì) 34
5.1 箱體內(nèi)結(jié)構(gòu)設(shè)計(jì)的特點(diǎn) 35
5.2 設(shè)計(jì)的方法 35
6.滾動(dòng)導(dǎo)軌的結(jié)構(gòu) 37
6.1導(dǎo)軌結(jié)構(gòu)的設(shè)計(jì) 37
7．PLC概述 43
7.1 PLC的發(fā)展歷程 43
7.2 PLC的發(fā)展趨勢(shì) 45
7.3 PLC的應(yīng)用 46
7.4 PLC的硬件結(jié)構(gòu) 47
7.5 PLC的工作原理 48
8. PLC控制系統(tǒng)設(shè)計(jì) 49
8.1 確定I／O的點(diǎn)數(shù) 49
8.2 選擇適用的PLC機(jī)型 50
8.3 輸入／輸出點(diǎn)的分配 50
8.4 PLC接線圖 50
8.5 PLC控制程序梯形圖設(shè)計(jì) 50
8.6 改造中必須注意的幾個(gè)問題 51
致謝 53
53
參考文獻(xiàn) 54
附件清單 55 ...
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