毕业设计__数控滚齿机.docx

河南科技大学毕业设计（论文）11河南科技大学毕业设计（论文）数控滚齿机刀架设计摘要滚齿机是齿轮滚刀加工齿轮的专用机床在齿轮加工中应用最广泛。在滚齿机上可切削直齿、斜齿圆柱齿轮。这种机床使用特制的滚刀时也能加工蜗轮、花键和链轮等各种特殊齿形的工件。本滚齿机由床身、立柱、刀架及滑板、工作台组成。滚齿机工作时滚刀装在滚刀主轴上由伺服电机驱动作旋转运动刀架可沿立柱导轨垂直移动还可绕水平轴线调整一个角度。工件装在工作台上由分度蜗轮副带动旋转与滚刀的运动一起构成展成运动。立柱可沿床身导轨移动以适应不同工件直径和作径向进给。刀架与滑板通过T型槽和螺栓联接滑板后联接立柱通过双V轨道实现沿立柱导轨的上下直线运动。刀架体装有三根轴动力从伺服电机传出经过减速器通过斜齿轮轴传递到主轴这两根轴实现动力传动；蜗杆蜗轮轴通过一对内啮合的直齿轮实现分度功能切削斜齿轮。其中在主轴上安装滚刀滚刀通过锥度主轴孔和拉杆定位通过辅助轴承的滑动实现对刀。刀架滑板的设计：计算出主轴的转矩然后进行主要零部件如轴、蜗轮蜗杆、斜齿轮、直齿轮的设计计算及轴承、键选择校核。关键词：滚齿机刀架滑板轴齿轮GEARHOBBINGMACHINETOOLRESTANDSLIDERDESIGNINGABSTRACTGearhobbingmachineisspecialpurposemachinetoolsforcuttinggearwithgearhobanditiswidelyused.Itcanbeusedformachiningspurcylindricalgearshelicalcylindricalgears.Withspecialhobbingcutteritcouldmachinewormgearsmultiplesplineandsprocketwheelswhosetoothprofilearespecial.Thisgearhobbingmachineiscomposedofbedcolumntoolrestsliderandmachinetable.Whenmachiningthehobbingcutterisinstalledinthespindleandrotatingwiththedriveofmotor.Thetoolrestmakesverticalmotionalongthecolumnguiderail.Whatsmoreitcanformaanglebetweentoolrestandhorizontalaxis.Theworkpieceissetuponthemachinetableandismovedbywormgearpairwithwhichgeneratethemotionofgearhobbing.Forhobbinghelicalgearsthedifferentialstructuremakestheworkpiecetodoanadditionalmotion.Columncanglidealongthebedinordertomakeanradialmovementortoadaptdifferentshaftdiameter.ThetoolrestislinkedtothesliderwithTgrooveandbolts.Itiscolumnbehindtheslider.Alongthedoublevguiderailitcanachieveupanddownstraightmotion.Therearethreeshaftsinthebodyoftoolrest.Twoofthemareusedtotransmitpowerandtheothersaretoobtainthefunctionindexsoastocuthelicalgears.Thegearhobbingcutterismountedinthespindleanditislocatedwithtaperholeoftheshaftandpullrodwhilepresentingwiththeauxiliaryslidingbearing