摘 要
深孔內(nèi)圓加工是目前加工行業(yè)中的一大難點(diǎn)，特別是深孔內(nèi)圓的精加工。由于其孔徑小，運(yùn)用傳統(tǒng)的砂輪磨削時(shí)將對(duì)要求砂輪的直徑更小、轉(zhuǎn)速更高從而難以實(shí)現(xiàn)；由于其孔深，對(duì)主軸的剛度提出了更高的要求。隨著砂帶磨削技術(shù)的興起和發(fā)展，砂帶磨削深孔內(nèi)圓已經(jīng)成為了深孔內(nèi)圓精加工的首選方法。砂帶磨削是根據(jù)工件形狀，以相應(yīng)的接觸方式，利用高速運(yùn)動(dòng)的砂帶對(duì)工件表面進(jìn)行磨削、研磨和拋光的一種新型高效磨拋工藝。其具有系統(tǒng)震動(dòng)小、穩(wěn)定性好、被加工表面質(zhì)量高、成本低、操作簡(jiǎn)便、安全衛(wèi)生等優(yōu)點(diǎn)。本文作者從深孔內(nèi)圓加工出發(fā)，結(jié)合砂帶磨削的原理機(jī)理及特點(diǎn)等，提出了運(yùn)用砂帶磨削深孔內(nèi)圓的新方法。作者根據(jù)實(shí)際情況，設(shè)計(jì)出了一款用于磨削深孔內(nèi)圓的砂帶磨床，并對(duì)其中關(guān)鍵零件進(jìn)行了校核。


關(guān)鍵詞：深孔內(nèi)圓加工 砂帶磨削 磨床 設(shè)計(jì)


ABSTRACT
The deeply hole internal cylindrical work is in a present processing profession ig difficulty, specially deep hole internal bore precision work. Because its aperture is small, when utilization tradition grinding wheel grinding to will request grinding wheel's diameter to be smaller, the rotational speed to be higher, thus realizes with difficulty. As a result of its depth of hole, set a higher request to main axle's rigidity. And develops along with belt grinding technology's starting, the belt grinding deep hole internal bore had already become the deep hole internal bore precision work first choice method. The belt grinding is according to the work piece shape, by the corresponding contact way, the use high speed movement's emery tape carries on the grinding, the attrition and the polishing one kind to the work piece surface new rubs highly effective throws the craft. It has the system to vibrate, the stability merits and so on good, to process slightly the surface quality to be high, the cost is low, operation simple, safety and health. This article author embarks from the deep hole internal work, the union belt grinding's principle mechanism and the characteristic and so on, proposed the utilization belt grinding deep hole internal bore new method. The author acts according to the actual situation, designed one section to use in the grinding deep hole internal bore the belt sander, and to the crucial element has carried on the examination.


Key words: Deeply hole internal cylindrical work, Belt grinding, Grinding machine, Design.

目 錄

摘 要 1
ABSTRACT 2
1 緒 論 5
1.1 深孔內(nèi)圓加工問(wèn)題 5
1.2 深孔內(nèi)圓砂帶磨削的國(guó)內(nèi)外現(xiàn)狀 7
1.3 本課題的研究?jī)?nèi)容 7
2 砂帶磨削原理 9
2.1砂帶磨削的原理 9
2.2砂帶的磨削機(jī)理 9
2.3砂帶磨削與砂輪磨削的比較 10
2.4砂帶磨削的分類(lèi) 12
2.5砂帶磨削的特點(diǎn) 12
2.6砂帶磨削的發(fā)展和應(yīng)用 14
3 總體方案分析 16
4 深孔內(nèi)圓磨削機(jī)床組件設(shè)計(jì) 17
4.1 電機(jī)的選用 17
4.2 傳動(dòng)方式的確定及設(shè)計(jì) 18
4.2.1、傳動(dòng)形式的比較和選取 18
4.2.2、傳動(dòng)參數(shù)的確定 20
4.2.3、V帶輪結(jié)構(gòu)的設(shè)計(jì) 24
4.3 主軸的設(shè)計(jì) 28
4.4 軸承、鍵的選用 32
5 磨頭功能部件設(shè)計(jì) 33
5.1 尺寸關(guān)系確定 33
5.2 接觸輪的設(shè)計(jì) 33
5.3 張緊機(jī)構(gòu)的設(shè)計(jì) 34
5.4 調(diào)偏裝置的設(shè)計(jì) 34
5.5 磨頭結(jié)構(gòu)圖 34
6 關(guān)鍵零件的校核 36
6.1 主軸的校核 36
6.1.1、扭矩計(jì)算 36
6.1.2、受力計(jì)算 36
6.1.3、彎矩計(jì)算 38
6.1.4、安全系數(shù)校核 38
6.2 鍵的安全校核 40
7 總結(jié) 42
致 謝 43
參 考 文 獻(xiàn) 44