畢業(yè)設(shè)計(jì)：EHY-112-90汽車變速箱殼體鉆孔組合機(jī)床（夾具設(shè)計(jì)+組合機(jī)床設(shè)計(jì)）
論文說(shuō)明書共27頁(yè)，字?jǐn)?shù)總計(jì)：12596
資料簡(jiǎn)介：
A0-夾具裝配圖.dwg
A1-夾具體.dwg
A1-夾具左支架.dwg
A2-被加工零件工序圖.dwg
A2-加工示意圖.dwg
A3-導(dǎo)向柱.dwg
A3-定位塊.dwg
A3-機(jī)床尺寸聯(lián)系圖.dwg
A3-壓板.dwg
A4-襯塊.dwg
A4-蓋板.dwg
A4-球頭.dwg
畢業(yè)設(shè)計(jì)說(shuō)明書：EHY-112-90汽車變速箱殼體鉆孔組合機(jī)床（夾具設(shè)計(jì)+組合機(jī)床設(shè)計(jì)）.doc
開題報(bào)告.doc
目錄.doc
任務(wù)書.doc
生產(chǎn)率計(jì)算卡.doc
實(shí)習(xí)報(bào)告.doc
摘要.doc
變速箱殼體組合機(jī)床的夾具設(shè)計(jì)
摘 要：變速箱殼體組合機(jī)床采用臥式雙面加工方案。用于鉆削被加工零件左側(cè)面上的8個(gè)?8.5的孔，1個(gè)?11.9的孔，右側(cè)6個(gè)?8.5的孔，2個(gè)?9.8的孔。主要包括總體設(shè)計(jì)和夾具設(shè)計(jì)兩個(gè)部分。左側(cè)主軸箱用來(lái)加工這9個(gè)孔，右側(cè)主軸箱用來(lái)完成剩下的8個(gè)孔的加工，兩主軸箱的中間是夾具部分。機(jī)床采用液壓滑臺(tái)實(shí)現(xiàn)刀具的進(jìn)給，以保證進(jìn)給速度的穩(wěn)定可靠。工件選用“一面兩孔”的定位方案，能夠保證工件的位置精度要求，同時(shí)便于工件裝夾，又有利于夾具的設(shè)計(jì)與制造。采用氣壓夾緊方式。為保證工件上被加工孔的位置精度，采用了導(dǎo)向裝置。因工件批量較大，導(dǎo)向裝置中的鉆套容易磨損，所以采用了可換鉆套。夾具體材料采用HT150,并在夾具體上開設(shè)排屑槽以防止切屑在定位元件工作表面上或其他裝置中堆積而影響工件的正確定位和夾具的正常工作。

關(guān)鍵詞：組合機(jī)床；總體設(shè)計(jì)；夾具

The fixture design of modular machine tool for transmission body based on 3D method
Abstract: The modular machine tool for transmission body uses the horizontal-type and two-side processing plan.It is used for drilling these holes in the work piece: eight holes with the diameter 8.5mm and depth 24mm, one hole with the diameter 11.9mm and depth 25mm on the left side,six diameter 8.5m holes and their bottom surfaces on the right surface, two diameter 9.8mm holes.The topic includes two parts, the general design and fixture design of the machine tool. The left spindle box is used for machining nine tappet holes, the right spindle box is used for machining eight holes, and a fixture is between two spindle boxes.To achieve stable and reliable feed, hydraulic pressure sliding tables are used in this machining tool.The work piece is located at the fixture through "a face two holes",which can ensure the position precision needs of the work piece and be beneficial to design the fixture.The combination machine is clamped by atmospheric pressure devices.To ensure position precision, the guiding devices are used. Replaceable guiding sleeves are chosen, because they are easy wearing in large quantities of production. The material of clamp body is HT150. Chip troughs which are in the clamp body are free of chip falling onto the working surface of positioning components or accumulating on other devices, and ensure the work piece correct positioning and the fixture normal working.

Key words: combination machine; design; fixture
目 錄
1前 言 1
1.1 本課題的意義 1
1.2 國(guó)內(nèi)發(fā)展概況 1
1.3 課題由來(lái)及所需基本條件 2
2組合機(jī)床總體設(shè)計(jì) 3
2.1 總體方案論證 3
2.1.1 加工內(nèi)容及要求 3
2.1.2 機(jī)床配置型式的選擇 3
2.1.3 定位基準(zhǔn)的選擇 3
2.1.4 滑臺(tái)型式的選擇 4
2.2 確定切削用量及選擇刀具 4
2.2.1 切削用量的選擇 4
2.2.2 計(jì)算切削力、切削扭矩及切削功率 5
2.2.3 刀具結(jié)構(gòu)的選擇 5
2.3 總體設(shè)計(jì)—“三圖一卡” 6
2.3.1 被加工零件工序圖 6
2.3.2 加工示意圖 6
2.3.3 機(jī)床尺寸聯(lián)系總圖 7
2.3.4 機(jī)床生產(chǎn)率計(jì)算卡 9
3 組合機(jī)床夾具設(shè)計(jì) 12
3.1 夾具設(shè)計(jì)的基本要求和步驟 12
3.1.1 夾具設(shè)計(jì)的基本要求 12
3.1.2 夾具設(shè)計(jì)的步驟 12
3.2 定位方案的確定 13
3.2.1 零件的工藝性分析 13
3.2.2 定位方案論證 13
3.2.3 誤差分析 13
3.2.4 校核加工精度 15
3.3導(dǎo)向裝置 15
3.4 夾緊方案的確定 16
3.4.1 夾緊裝置的確定 16
3.4.2 夾緊力的確定 18
3.4.3 氣缸的選擇 19
3.5 夾具體的設(shè)計(jì) 20
3.6 夾具三維設(shè)計(jì) 20
3.6.1 三維建模及三維軟件介紹 20
3.6.2 基于三維的夾具設(shè)計(jì)過(guò)程 21
4 結(jié)論 24
參 考 文 獻(xiàn) 25
致 謝 26
附 件 清 單 27