tools.docx
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tools.docx
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tools
Chapter9
ToolsandHolders
MillingTools
MillingtoolscanbestandardAPT7parameterbasedtoolsorspecialformprofiletools.Theyareexplainedinthefollowingsections.
StandardAPT7parametertools
MostmillingtoolscanbedefinedbytheindustrystandardAPT7parameters.Theparametersare:
1:
Diameter
2:
CornerRadius(Filletradius)
3:
Height(Heightofthecuttingportion/Flutelength)
4:
Bottomangle(Alphaangle)
5:
Sideangle(Betaangle)
6:
Elength(Xdistancefromcenterlinetocenterofcornerradius)
7:
Flength(Ydistancefromcenterlinetocenterofcornerradius)
Pleaserefertothefollowingillustration.TheE&Flengthsareoptional,sincetheycanbecomputedautomatically.Insomecases,theE&Flengthsmaybemodifiedtocreateunconventionaltoolshapes.
Someofthestandardtoolscanbedefinedasfollows:
FlatEndMill
Diameter>0
Height>0
CornerRadius&otherangles=0
RadiusEndMill
Diameter>0
Height>0
CornerRadius>0 Allotherparametersare=0 BallMill Diameter>0 CornerRadius=Dia/2 Height>0 Allotherparameters=0 Drills Diameter>0 Height>0 Bottom/Alphaangle>0 Cornerradius, Side/betaangle=0 TaperedBallEndmill Diameter>0 CornerRadius=Dia/2 SideAngle>0 Height>0 Bottom/alphaangle Otherparameters=0 Specialformtoolsformilling VirtualControllersupportsspecialformtoolsthatarenotcoveredbystandardAPT7parameters.Userscandefineany2dprofileasatoolshape.VirtualControllerwillautomaticallyrevolvetheshapetocreatethetool.TheformtoolprofilesarestoredintheTOOLS.LIBfileinthecurrentworkingdirectory.ThisfileisasimpleASCIItextfilethatcanbeeditedbyanytexteditor. Herearesomeguidelinesandrulestofollowwhilecreatingformtoolprofiles: ∙Describeeachformtoolasaseriesofclosedloops,eachofwhichmustbeconvex.Aconcaveshapemustbedescribedasaseriesofconvexshapes. ∙ConcavearcsshouldNOTbeused. ∙Eachtooldescriptionconsistsofanamestatementfollowedbyoneormoreloops,eachofwhichcanconsistofseveralcoordinatestatements. ∙Descriptionofaloopendswhenthecoordinatesofitsfirstpointarerepeated. ∙Youmayaddblanklinesorcommentsanywherewithinafile ∙AnamestatementwillcontainthenameofthetoolandmayoptionallybefollowedbyXandYoffsetsforthetoolholder,e.g.: SampleTool_1<0.2><0.6> ∙Eachcoordinatestatementisofoneoftheseforms: pointxy arcxcycr ∙Linesegmentsareimplicitlydescribedbytwopointsinarow. ∙EacharcstatementMUSTbeprecededandfollowedbypointstatements. ∙Eacharcmustbelessthan180degrees. ∙Eachloopmaybeeitherclockwiseorcounterclockwise. ∙Theoriginofaformtool'sprofileismappedtotheCLpoint. ∙Ifaholderisusedwithaformtool,itsoriginisalsomappedtotheCLpointafterbeingoffsetbytheXandYoffsetsonthetool'snamestatement. Anexampleformtool: MillingFormTool1 point00 arc0.375.375 point.375.375 point.3751 arc1.37511 point1.3752 arc1.3752.75.75 point2.1252.75 arc1.3752.75.75 point1.3753.5 point.753.5 point.756 point06 TurningTools VirtualControllersupportsstandardturninginsertsandspecialforminserts. Standardturninginserttools Thestandardturninginsertsare: Diamond,Square,Triangle,Groove,Circle.Theyareexplainedbelow.Theparametersare: NoseRadius: Radiusofthetipoftheinsert IncludedAngle: Theincludedangleatthenosetip Inscribeddiameter: Inscribedcirclediameter(ICDia) MountingAngle: TheanglebetweenXaxis&Insertcenter (CCWis+towardsXaxis;CWis-awayfromXaxis) Square InscribedCircle=d NoseRadius=r IncludedAngle=90 Tringle InscribedCircle=d NoseRadius=r IncludedAngle=60 Diamond InscribedCircle=d NoseRadius=r IncludedAngle=35 Diamond InscribedCircle=d NoseRadius=r IncludedAngle=80 Diamond InscribedCircle=d NoseRadius=r IncludedAngle=55 Circle Diameter=d Specialformtoolinsertsforturning VirtualControllersupportsspecialforminsertsforturningthatarenotcoveredbythestandardinserts.Userscandefineany2dprofileasatoolinsert.TheformtoolprofilesarestoredinTOOLS.LIBfileinthecurrentworkingdirectory.ThisfileisasimpleASCIItextfileandcanbeeditedbyanyeditor.Theformatforcreatingformturningtoolsprofilesareidenticaltothatofformmillingtools.PleasereferrertothesectionSpecialformtoolsformillinginthischapterformoredetails. Insert&HolderThickness Theinsertsandturningholderscanbeassignedafixedthicknessforvisualizationandsolidcollisioncheckingpurposes.TheinsertandholderthicknessvaluescanbesetintheMisc.informationpageintheSystemDefaultsdialogboxundertheOptionsmenu. Holders VirtualControllersupportsholdersalongwithtools.Userscandefineamillingorturningholderasageneralprofile.TheseprofilesarestoredintheHOLDER.LIBfileinthecurrentworkingdirectory.ThisfileisanASCIItextfileandcanbeeditedbyanytexteditor. MillingHolder Herearesomeguidelinesandrulestofollowwhilecreatingmillingholderprofiles: ∙Describeeachholderasaseriesofclosedloops,eachofwhichmustbeconvex. ∙Aconcaveshapemustbedescribedasaseriesofconvexshapes. ∙ConcavearcsshouldNOTbeused. ∙Eachtooldescriptionconsistsofanamestatementfollowedbyoneormoreloops,eachofwhichcanconsistofseveralcoordinatestatements. ∙Descriptionofaloopendswhenthecoordinatesofitsfirstpointarerepeated. ∙Youmayaddblanklinesorcommentsanywherewithinafile ∙AnamestatementwillcontainthenameoftheholderandmayoptionallybefollowedbyXandYoffsetsforthetoolholder,e.g.: SampleTool_1<0.2><0.6> ∙Eachcoordinatestatementisofoneoftheseforms: pointxy arcxcycr ∙Linesegmentsareimplicitlydescribedbytwopointsinarow. ∙EacharcstatementMUSTbeprecededandfollowedbypointstatements. ∙Eacharcmustbelessthan180degrees. ∙Eachloopmaybeeitherclockwiseorcounterclockwise. ∙Theoriginofaformtool'sprofileismappedtotheCLpoint. ∙Ifaholderisusedwithaformtool,itsoriginisalsomappedtotheCLpointafterbeingoffsetbytheXandYoffsetsonthetool'snamestatement. ExampleMillingHolder: SimpleHolder1 Point0.0000.000 Point1.00.0 Point1.01.5 Point1.51.5 Point1.52.0 Point1.02.0 Point0.255.0 Point0.05.0 TurningHolder Turningholdersworkthesamewayasthemillingholders.Theyarealso2dprofilesthataresweptinsteadofrevolvedasinmillingholders.Thedefinitionof2dprofileoftheturningholderisthesameasthatofthemillingholder.PleaserefertothesectiononMillingHoldersfortherulesandguidelines. Theturningholderscanbeassignedafixedthicknessforvisualizationandsolidcollisioncheckingpurposes.TheseholderthicknesscanbesetintheMisc.informationpageintheSystemDefaultsdialogboxundertheOptionsmenu, ExampleTurningholder: TurningHolder2 Point-0.050-0.200 Point0.700-0.200 Point1.4500.550 Point1.4504.800 Point-0.0504.800 Point-0.050-0.200 ToolDefinitioninAPT-CLfiles MillingTools AllmillingAPT7parametersbasedtoolsaredefinedby: CUTTER/ Dia,CorRad,E,F,A,B,Height> Example: CUTTER/0.5,0,0.25,0,0,0,3.0 FormtoolscanbedefinedbyPPRINT/FORM TurningTools Allturningtoolstatementsaredefinedasfollows: PPRINT/TURNDIAMONDricdnama PPRINT/TURNCIRCLEicd PPRINT/TURNSQUAREricdma PPRINT/TURNTRIANGLEricdma PPRINT/TURNGROOVErwl PPRINT/TURNFORM where: r-noseradius icd-inscribedcirclediameter na-noseangle/cornerangle ma-mountingangle: degreescounterclockwise thenoseisrotatedawayfrompointing directlyinward w-width l-length Example: PPRINT/TURNDIAMOND0.031250.255510 CUTTER/orPPRINT/TURNstatementsshouldprecedeallGOTOstatements.Millingandturningcanbeintermixedinthesameinputfileforagivensetuporoperation. GeneralInformation Inch&Metricformtools&holders BothandInchandMetrictoolsareavailableinthetoolsandholderlibraries.UserscanaddmoretoolsandholderstotheTOOLS.LIBandHOLDER.LIBdatafiles. ToolSetLength Toolsetlengthisthetotallengthofthetoolfromthetooltiptospindleface.ThisinformationisnecessaryforNCGcodefilesfor4&5axismillingmachineswithrotaryaxis(A,B,C)onthehead.YoucanenterthetoolsetlengthinformationintheToolListdialog.ToinvoketheToolListdialogselectEditToolListfromtheToolsmenu. DefaultTooldimensions Userscansetthedefaulttoolinformation(suchasmindiameter,maxheightetc.)inthetooldefaultsdialog.Whenatoolpathfileisread,alltooldimensionsareverifiedagainstthedefaulttoolinformation. TurningTools Allturningtoolstatementsaredefinedasfollows: PPRINT/TURNDIAMONDricdnama PPRINT/TURNCIRCLEicd PPRINT/TURNSQUAREricdma PPRINT/TURNTRIANGLEricdma PPRINT/TURNGROOVErwl PPRINT/TURNFORM where: r-noseradius icd-inscribedcirclediameter na-noseangle/cornerangle ma-mountingangle: degreescounterclockwise thenoseisrotatedawayfrompointing directlyinward w-width l-length Example: PPRINT/TURNDIAMOND0.031250.255510 CUTTER/orPPRINT/TURNstatementsshouldprecedeallG
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