【正文】
,精度已經(jīng)不是主要問題。又因定位誤差分析:(1)定位元件尺寸及公差的確定:夾具的2個定位元件為支撐板和定位心軸,查夾具設(shè)計手冊知,鏜床夾具的誤 差是工件表面的誤差的1/2左右。(2)計算248。夾具設(shè)計及操作的簡要說明: 如前所述,在設(shè)計夾具時,應(yīng)考慮提高勞動生產(chǎn)率,為此,應(yīng)首先著眼于機動夾緊,而不采用手動夾緊。經(jīng)過唐老師的耐心指導(dǎo),以及相關(guān)工具書的查閱,本夾具總的感覺還是比較緊湊的??傊ㄟ^這次課程設(shè)計使我受益匪淺,為我今后的學(xué)習(xí)與工作打下一個堅實而良好的基礎(chǔ)。 共頁產(chǎn)品名稱零件名稱后托架(CA6140車床)第 1頁材料牌號HT200毛坯種類鑄件毛坯外型尺寸2206067mm每毛坯件數(shù)2000每臺件數(shù)備注20mm;Z5125A專用夾具,高速鋼直柄麻花鉆、高速鋼90度锪鉆,塞規(guī) 50鉆1;鉆深孔248。30mm;3;T68專用夾具,硬質(zhì)合金鏜刀,塞規(guī)80鏜精鏜孔到248。 100檢按圖紙要求檢驗;28mm;2;3;Z575專用夾具,高速鋼錐柄麻花鉆、高速鋼90度锪鉆,塞規(guī)13mm的孔;鉆兩個銷孔248。五、主要參考文獻:[1] 白成軒.機床夾具設(shè)計新原理.北京:機械工業(yè)出版社,1997年;[2] 徐鴻本.機床夾具設(shè)計手冊.沈陽:遼寧科學(xué)出版社,2004年;[3] 趙家齊.機械制造工藝學(xué)課程設(shè)計指導(dǎo)書(第2版).北京:機械工業(yè)出版社,2000 年;[4] 史全富等.金屬切削手冊(第三版).上海:上??茖W(xué)技術(shù)出版社,2000年;[5] 陳家芳.實用金屬切削加工工藝手冊(第二版).上海:上??茖W(xué)技術(shù)出版社,2005年;should be dealt with by the personnel Department of the pany. (3) personal injury accident occurs, the direct punishment 5001000, who is directly responsible for the accident responsibility, give notice of criticism and 50100 economic sanctions against them. (4) to conceal the accident, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 5001000 punishment. (5) significant near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB33232005 steel fusion welded butt joints, welding engineeringRay lighting and quality rating of 2 GB1134589 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB502362002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ22292 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH35252004 petrochemical JB/ T47082000 of welding procedure qualification for steel pressure vessels 7 JB/47092000 8 JB47302005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T47442000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation engineering 1 GB15098 2 GB501282005 vertical cylindrical steel pressure vessel steel welded specification for construction and acceptance of oil tank 3 JB/ T47351997 steel welded atmospheric pressure vessel 4 GB502312009 mechanical equipment installation機械加工工藝過程卡片產(chǎn)品型號通過這次課程設(shè)計,使自己對工藝人員所從事的工作有了親身的體驗,學(xué)會了查圖表、資料、手冊等工具書。由于是精加工,鏜削余量十分小,鏜削力自然就小。40mm孔與回轉(zhuǎn)鏜模的內(nèi)徑的最大間隙為: 回轉(zhuǎn)鏜模的孔長為50mm,則由上述間隙引起的最大傾角為:,即為鏜孔的最大平行度誤差。因此。(二)夾具設(shè)計: 定位基準的選擇: 由夾具零件圖知,三個孔的軸線與底面的距離有要求,底面已經(jīng)精加工。這三個孔的軸線與底面的平行度、各個孔的軸線的平行度都有一定的技術(shù)要求。此夾具將用于T68臥式鏜床。40mm; 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:精鏜到248。30mm; ; 工步1:; 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:; 機床:T68鏜床; 刀具:硬質(zhì)合金鏜刀; 確定切削進給量: 根據(jù)《實用金屬切削加工工藝手冊》,取進給量f=(mm/r); 確定切削速度: 根