畢業(yè)設(shè)計：JM304B變速箱箱體鉆孔組合機(jī)床總體及左主軸箱設(shè)計
論文說明書共33頁，字?jǐn)?shù)總計：14920
資料簡介：
文獻(xiàn)資料
A0-工序圖-變速箱箱體.dwg
A0-后蓋補(bǔ)充加工圖.dwg
A0-機(jī)床尺寸聯(lián)系圖.dwg
A0-加工示意圖.dwg
A0-左主軸箱干涉檢查圖.dwg
A0-左主軸箱箱體補(bǔ)充加工圖.dwg
A0-左主軸箱裝配圖.dwg
A2-上蓋.dwg
A2-主軸.dwg
A3-傳動軸.dwg
A3-中間底座.dwg
畢業(yè)設(shè)計過程材料袋目錄順序.doc
畢業(yè)設(shè)計開題報告.doc
畢業(yè)設(shè)計任務(wù)書.doc
畢業(yè)設(shè)計說明書：JM304B變速箱箱體鉆孔組合機(jī)床總體及左主軸箱設(shè)計.doc
畢業(yè)設(shè)計外文翻譯.doc
畢業(yè)實習(xí)報告.doc
畢業(yè)實習(xí)報告-封面.doc
課題申報表.doc
目 錄.doc
生產(chǎn)率計算卡.doc
說明書封面.doc
外文原文.doc
外文原文.pdf
外文原文.rtf
摘要.doc
JM304B變速箱箱體鉆孔組合機(jī)床總體及左主軸箱設(shè)計
摘 要：本課題來源于鹽城悅達(dá)拖拉機(jī)廠。由于變速箱體使用的廣泛性，該型號機(jī)體是需要大批量生產(chǎn)的。為提高其加工精度和生產(chǎn)效率，需要設(shè)計一臺組合機(jī)床來改善變速箱體的加工情況。本課題是針對JM304B變速箱體鉆孔組合機(jī)床總體及左主軸箱的設(shè)計。用于同時加工被加工零件左側(cè)面上的8個 孔，1個 孔,1個 ；右側(cè)面上8個 孔，1個 孔；后面上的8個 孔，1個 孔，一次裝夾同時完成三面加工。
在設(shè)計過程中，采用后面、左面、下面三面定位, 左面和后面用定位銷定位，下面用定位條定位。上面采用氣壓缸夾緊, 加工工藝性較好,零件裝夾方便。此次設(shè)計主要分為組合機(jī)床總體設(shè)計和左主軸箱設(shè)計兩大部分。對于機(jī)床總體設(shè)計，首先需要確定切削用量，計算切削力、切削扭矩、切削功率及刀具耐用度，然后以此確定主軸、外伸尺寸等。對于主軸箱設(shè)計，首先需要繪制設(shè)計原始依據(jù)圖，并進(jìn)行主軸、齒輪的確定與動力計算，接著進(jìn)行主軸箱的動力計算等，最后，還需進(jìn)行齒輪、各類軸的校核，就此完成了整個設(shè)計過程。
此次設(shè)計采用臥式單工位三面同時鉆孔的方案，能夠大大節(jié)約加工時間，提高工作效率。同時本組合機(jī)床有結(jié)構(gòu)簡單、操作方便、加工精度高、工人勞動強(qiáng)度低及有利于提高加工生產(chǎn)率等優(yōu)點，實現(xiàn)了設(shè)計的目標(biāo)要求。
關(guān)鍵詞：變速箱體；主軸箱；鉆孔；組合機(jī)床

Design of General and Left Headstock of Modular Machine Tool for Drilling Holes on Three-Side of JM304 B Tractor Gear Box
Abstract: This subject comes from Mahindra Yueda(Yancheng) Tractor Company Ltd. Due to the extensive use of JM304 B tractor gear box ,it is a product which needs to be volume-produced. In order to prove the disposition and the production efficiency, we are needed to design a high effective modular machine tool to improve the production of the JM304B tractor gear box. This used for cure the holes of Three-Side of JM304 B tractor gear box at one time, left face of eight holes with the diameter is 8.6, one holes with the diameter is 8, one holes with the diameter is 12.3; the right side surface of eight holes whit the diameter is 8.6, one holes with the diameter is 8; behind side surface of the eight holes with the diameter is 8.6, a hole with the diameter is 12.3.
In the design process of jig, the work piece has been located by three surfaces - behind, left and underside. A pin has been used on the behind and left. Two orientation bars have been used on the underside. Use pneumatic cylinder to clamp the above and the right side. On the compress platen，we use a guide rod to guide clamping, in order to make it clamping smooth and reliable. This design included the design of machine tool and the headstock of left.First,I need to determine the cutting parameters to calculate the cutting force, torque, power and tool life, and then the axis size outriggers. With regard to the part of the spindle box design, we should draw the picture, count the principal axis and the gear, the drive of headstock. Finally, we must check these.
The modular machine tool uses the horizontal-type single location three-side processing plan, so that it clamps conveniently. This modular machine tool has many advantages such as the simple structure, the easy operation, the high processing precision , the worker labor intensity is low and advantageous to raise the production efficiency and so on.
Key words: tractor gear box；headstock; drill hole; machine tool

目 錄
1 前言 ………………………………………………………………………1
2 組合機(jī)床總體方案設(shè)計 ……………………………………………………3
2．1工藝方案的擬定 ………………………………………………………3
2.1.1 被加工零件的特點…………………………………………………………3
2.1.2 工藝路線的確立………………………………………………………………3
2.1.3 機(jī)床配置型式的選擇…………………………………………………………4
2.1.4 定位基準(zhǔn)和夾緊部位的選擇…………………………………………………4
2.2 三圖一卡計算……………………………………………………………………4
2.2.1 被加工零件工序圖 …………………………………………………4
2.2.2 加工示意圖 …………………………………………………4
2.2.2.1 刀具的選擇…………………………………………………………………5
2.2.2.2 選擇接桿、彈簧卡頭………………………………………………………5
2.2.2.3 導(dǎo)向結(jié)構(gòu)的選擇……………………………………………………………5
2.2.2.4 選擇切削用量………………………………………………………………6
2.2.2.5 計算切削力、切削扭矩..