郑州航空工业管理学院机械制造课程设计1目录摘要..............................................................................................................................2第一章零件分析..........................................................................................................41.1零件作用分析.................................................................................................41.2零件工艺分析.................................................................................................5表1.1.............................................................................................................................5第二章确定毛坯..........................................................................................................5第三章工艺规程的设计..............................................................................................63.1制定工艺路线.................................................................................................6表3.3.....................................................................................................................93.2定位基准的选择..............................................................................................93.3加工工序设计.................................................................................................93.3.1机械加工余量确定...............................................................................93.3.2确定切削用量.....................................................................................10第四章时间额定的计算............................................................................................144.1基本时间jt的计算........................................................................................144.2辅助时间at的计算........................................................................................164.3其他时间的计算............................................................................................164.4单件时间djt的计算.......................................................................................17第五章画毛坯图........................................................................................................18第六章填写机械加工工艺过程卡和机械加工工序卡............................................18参考文献......................................................................................................................18郑州航空工业管理学院机械制造课程设计2摘要本设计所设计的零件是柴油机中摇杆结合部的气门摇杆轴支座，气门摇杆轴支座是是柴油机摇杆座的结合部，它是柴油机一个重要零件。其中摇杆轴装在)1.0~06.0(20孔中，轴上两端各装一进气门摇杆；摇杆座通过两个13孔用M12螺杆与汽缸盖相连，3mm轴向槽用于锁紧摇杆轴，使其不能转动。汽缸盖内每缸四阀使燃烧室充气最佳，气门由摇杆凸轮机构驱动，摩擦力小且气门间隙由液压补偿。这种结构可能减小燃油消耗并改善排放。关键字：气门摇杆轴支座；零件；工艺性，加工工艺性郑州航空工业管理学院机械制造课程设计3AbstractThisdesignisthedesignofdieselenginepartsoffarmingrockerbearing,thevalve,thevalverockeraxleshaftbearingsisdieselengineisthejoystickrockerseat,itistakinganimportantparts.DieselengineAmongthemthejoystickshaftinstalledinthehole,theshaftateachendintothevalvewithajoystick;AjoystickthroughtwoholesinM12screwandthecylinderheadislinkedtogether,3mmaxialslotusedtolockrockeraxis,tom...
