畢業(yè)設(shè)計：CA6140型車床主軸箱改進(jìn)型設(shè)計及工藝分析
論文說明書共56頁，字?jǐn)?shù)總計：15279
資料內(nèi)容簡介：
A0-鏜床夾具裝配圖.dwg
A0-主軸箱展開圖.dwg
A1-主軸箱斷面圖.dwg
機械加工工藝過程卡片-2.dwg
機械加工工藝過程卡片-1.dwg
畢業(yè)設(shè)計(論文)說明書：CA6140型車床主軸箱改進(jìn)型設(shè)計及工藝分析.doc
本科畢業(yè)設(shè)計(論文)外文翻譯（附外文原文）.doc
本科畢業(yè)設(shè)計(論文)開題報告（含論文綜述）.doc
畢業(yè)設(shè)計(論文)任務(wù)書.doc
本科畢業(yè)設(shè)計(論文)讀書報告（讀書筆記）.doc
目錄
摘 要 III
1 引言 1
2 主要技術(shù)參數(shù) 3
3 傳動方案和傳動系統(tǒng)圖的擬定 4
4 零件設(shè)計階段 8
4.1 整體設(shè)計 8
4.2 軸I上零件設(shè)計 9
4.2.1 選擇V帶 9
4.2.2 連接發(fā)動機和變速箱動力傳輸?shù)脑O(shè)計 10
4.2.3 對傳動齒輪的計算 11
4.2.4 對傳動軸上鍵的計算 12
4.2.5 對傳動軸上軸承的計算 14
4.3 軸II上零件設(shè)計 15
4.3.1 對傳動齒輪的計算 15
4.3.2 對傳動軸的計算 16
4.3.3 對軸承組剛度的計算 18
4.4 軸III上零件設(shè)計 19
4.4.1 對傳動齒輪的計算 19
4.4.2 對傳動軸的計算 21
4.4.3 對傳動軸上軸承的計算 23
4.5 傳動系統(tǒng)的軸Ⅳ及軸上零件設(shè)計 24
4.5.1 齒輪的驗算 24
4.5.2 傳動軸的驗算 25
4.5.3 對軸承組剛度的計算 26
4.6 軸V上零件設(shè)計 28
4.6.1 對傳動齒輪的計算 28
4.6.2 對傳動軸的計算 30
4.6.3對軸承組的剛度計算 31
4.7 轉(zhuǎn)速范圍的擴大 32
4.7.1 背輪設(shè)計的目的 32
4.7.2背輪機構(gòu)具體設(shè)計 32
5 加工工藝規(guī)程 33
5.1 對箱體進(jìn)行分析 33
5.1.1 整體分析 33
5.1.2 工藝分析 33
5.2 毛胚以及材料的選擇 34
5.3 確定工藝路線 36
5.3.1 確定加工余量、工序尺寸 37
5.3.2 確定切削用量 38
5.4 專用夾具設(shè)計 46
5.4.1 夾具的結(jié)構(gòu) 46
5.3.2 夾緊力大小的確定原則 46
5.3.3 定位基準(zhǔn)的選擇 47
5.3.4 切削力的計算與夾緊力分析 47
5.3.4 夾緊元件及動力裝置確定 47
5.3.5 夾具精度分析 47
5.3.6 夾具操作說明 48
6 心得體會 48
7 致謝 50


摘 要
目前，國內(nèi)數(shù)控臥式車床正向著重載、高速、高精度的方向發(fā)展，重載臥式車床主電機的規(guī)格越來越大、重載臥式車床主軸轉(zhuǎn)速越來越高。機床在持續(xù)高速、重載荷的條件下加工零件時，機床主軸箱的主軸軸承和I軸軸承經(jīng)常出現(xiàn)由于溫升過高而損壞的問題。主軸和I軸外部法蘭盤經(jīng)常出現(xiàn)漏油的問題。為解決上述問題，對主軸箱的結(jié)構(gòu)進(jìn)行技術(shù)改進(jìn)，增加了主軸前軸承溫度測量反饋裝置和主軸油箱油溫控制裝置，并對主軸和I軸的進(jìn)油、回油、密封結(jié)構(gòu)進(jìn)行技術(shù)改進(jìn)。增加了雙重密封回油結(jié)構(gòu)，使主軸箱的主軸和I軸的進(jìn)油、回油、密封結(jié)構(gòu)更加合理，提高了主軸箱在持續(xù)運轉(zhuǎn)時的安全性、可靠性。
主軸的軸承是機床的關(guān)鍵外配套件，價格很高。機床在持續(xù)高速、重載荷的條件下加工零件時，機床主軸軸承發(fā)熱量非常大。主軸軸承溫度必須得到合理的檢測和控制，才能保證主軸箱的主軸軸承的正常使用。為此，本次畢業(yè)設(shè)計對主軸箱結(jié)構(gòu)作出調(diào)整。
另外，通過采用背輪機構(gòu)增加了主軸箱的轉(zhuǎn)速范圍。選用變頻電機加大主軸輸出以及其他一些方面的改進(jìn)措施來提高機床主軸主軸工作穩(wěn)定性，從而增加機床壽命。

Abstract:
At present, the domestic load CNC horizontal lathe forward focused, high-speed, high-precision direction, heavy horizontal lathe main motor specifications growing, heavy horizontal lathe spindle speed increasing. Machine tools in the continuous high-speed, heavy load conditions when machining parts, machine tool spindle bearings and spindle box I axis bearing temperature is too high and often occur due to corruption issues. Spindle and the I-axis external flange leakage problems frequently arise. To solve the above problems, the structure of the spindle box for technical improvements, increased the spindle front bearing temperature measuring means and the feedback control means spindle oil tank, and the I-axis of the spindle and into the oil, oil return, the seal structure of technical improvements. Increased oil return double seal structure, the headstock spindle and the I-axis into the oil, oil return, the sealing structure is more reasonable to improve the spindle box in the continuous operation safety and reliability.
Machine tool spindle bearings are key to the outer parts, the price is very high. Machine tools in the continuous high-speed, heavy load conditions when machining parts, machine tool spindle bearings heat is very large. Spindle bearing temperature must be reasonably detection and control, in order to ensure the headstock spindle bearings for normal use. To this end, this graduation project on the headstock structural adjustment.
In addition, by using the back wheel mechanism increases the headstock speed range. Increase the output frequency motor spindle selection and some other improvements in measures to improve the stability of the machine spindle spindle work, thereby increasing tool life