数控切管机一次完成多次搭接相贯坡口切割的方法

(),,--,Miter,,,SY/T4802-92(APIRP2A1989)AWS,,--Miter,,,,,:0,--Miter,,,,Z,1--Miter[1]1.1-1()d()D:z=Dcos/(2sin)+(d-2t)cos/(2tg)(1)s=[(d-2t)/2]/180(2)z,sZ;;=arcsin[(d-2t)sin/D+2A/D];;d,t,;,A,;cos=1-sin2(1):z=(D/2)2-[(d-2t)sin/2+A]2/sin+(d-2t)cos/2tg(3)1.2,1M(),,199912HANJIEXUEBAODecember1999:=arccos(coscoscos-sinsin)(4);SY,,-1.3SY/T4802-92(APIRP2A)/(ANSI/AWS),SY/T4802-92(APIRP2A),90/2;9045,B,2,:B=90-+1-Fig.1Schematicoftheintersectionofpipe-pipeB;(),,,B,,:tg=(coscossin+cossin)/cossin,[2]:tg=tgB/cos(5)1.4(1)(2),,,,,3,Z,=ttg(6)t,tg(5)1.5-(Miter)O,d,-,t,:31Z=(d-2t)cos/2tg(7)S=(d/2-t)/180(8)ZSOz;,=arccos(coscos)(9)B=90-+(10):tg=tgB/cos(11)=ttg(12)=arctg(sin/tg)(13)Miter,-,,,(6)(12)24,,()-dDd1(di,d0D;d1d1),,,AA1(Ai),(i),=0,,e(O,O)(ei),4e,,d(3)(2)4Fig.4Schematicofone-lapintersection,OO,ze,,,(14)(3):z=(di/2)2-[(d-2t)sin(-i)/2+Ai]2/(sini)+(d-2t)cos(-i)/(2tgi)+ei(14)i=0,d0D,0=0;A0=A;0=;e0=0,(3)(14),(3)(O)41,2=0=1,=2=360dD,(3)(2);=12dd1,(14)(2),,,,,32,-,,(3)(14)Z,O,ZZ,,Z,5,,5Fig.5Theflowchart3-Z,():Z,Z,,3.1,S,Z;Z,Z;,333T(TZ),3.2,,S(2)dt,,,,dt,S,z(z+),z,z,:Rcounts=ScaleRZcounts=ZScaleZTcounts=ScaleTScaleRScaleZScaleT3.3,0.4,900,,1000mm,,,,,,,,,0.005mm,,,,3.4,,,(12),,,,,,,,,,ZZ,,,Z,4:(1),(2)Z,,34(3),,,(1998-03-27,1999-10-21)1..(),1988,(11):8388.2..,1988,(2):812.MethodofIntersectingGrooveCuttingofMultipleLapsataTimewithNCPCMJiaAndong,LiBaoqing,YanXiangan,ZhengWei(TianjinUniversity)AbstractItisveryimportanttostudyandbuildthemathematicalmodelsofintersectionduringapplicationofNCPCM(numericalcontrolledpipecuttingmachine).Theyincludenotonlytheintersectingcurvemodelsofpipe-pipe,pipe-plate,Miterjointandmultiplelaps,butalsothecuttingmodelsofgrooveangleinthelightofSY/T4802-92andAWSstandards.Onthebasisofthesemodels,thecomputerprogramswithwhichNCPCMcancuttheintersectinggroovesofpipe-pipe(includingsmallangles),pipe-plate,Miterjointandmultiplelaps,aredeveloped.Fortheintersectinggroovesofmultiplelaps,theprogramschangeprimarymul2tiplecuttingintoone-kickcutting,andmaketherapidcuttingofthesejointscometrue.Themodelsandprograms,onlyrevisedsomewhat,canbealsoappliedtotherobotweldingofsimilarjointssuchastubularstructures,bicycleandsoon.Keywordsintersectingcurve,dihedralangle,grooveangle,cuttingangle,,1939,,10;,30,199635