【正文】
計算轉(zhuǎn)速: ,按機床實際轉(zhuǎn)速?。? 計算基本時間: 工步3: 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:; 機床:Z575型鉆床; 刀具:高速鋼90度锪鉆,; 確定切削進給量: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取進給量f=(mm/r); 確定切削速度: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取切削速度; 計算轉(zhuǎn)速: ,按機床實際轉(zhuǎn)速??; 計算基本時間: 工序40:;;; 工步1: 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:; 機床:Z575型鉆床; 刀具:高速鋼擴孔鉆,; 確定切削進給量: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取進給量f=(mm/r); 確定切削速度: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取切削速度; 計算轉(zhuǎn)速: ,按機床實際轉(zhuǎn)速??; 計算基本時間: 工步2: 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:; 機床:Z575型鉆床; 刀具:高速鋼擴孔鉆,; 確定切削進給量: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取進給量f=(mm/r); 確定切削速度: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取切削速度; 計算轉(zhuǎn)速: ,按機床實際轉(zhuǎn)速??; 計算基本時間: 工步3: 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:; 機床:Z575型鉆床; 刀具:高速鋼擴孔鉆,; 確定切削進給量: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取進給量f=(mm/r); 確定切削速度: 根據(jù)《實用金屬切削加工工藝手冊》中表56,取切削速度; 計算轉(zhuǎn)速: ,按機床實際轉(zhuǎn)速?。? 計算基本時間: 工序50:;鉆深孔248。40mm; 加工條件:工件材料:HT200,σ=200HBS,鑄造; 加工需求:精鏜到248。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。因此。由于是精加工,鏜削余量十分小,鏜削力自然就小。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:上海科學(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:上海科學(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