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    IP-1663277-ECYCLE (G71/G72)Cutting Cycle (G71)CUTTING COMPOUNDThread13-2. THREAD13-2-1. LongitudinalG71 mode threadbelow is performed:showncutting cycle asInStarting“Kpoint ofthread cutting[cyclevlrH./2I.1.zB\""]D/2tXH/2£U/2Format :JMQHLEFZA (I)BDUN0001 G71Xof each word:Descriptionof...

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    3277-EP-167B:Cuttertip point angle(0°B< 180°; 0° if no B command is provided.)D:Depth of cutin the first threadcutting cycle(Expressed in diameter)Finishing allowance(Expressed in diameter; nofinishing cycleis performed if aUwordis notprovided.)U:;H:Thread height(Expressed in diameter)Chamf...

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    ''3277~E23-2-2. TrP-168ansverse ThreadIn £h« fixedCuttinCycle> thread&CompoundFixed Cycle (G72)cuttingcycle as shown helow is Per formed.AHWjDI:iPoint ofthreadStartingiiBcuttingjiliI:!iHIiiijj!<III-r~UK!ZXOKUAAA MACHINERY WORKS LTD.

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    3277-EP-169Format :N0001G72XZA (K)BDWHLEFJMQDescription of each word:X:Xcoordinate ofendpoint of threadZdimension offinal thread cutting cycleZ:1A:Taper angleDistance between startingpoint and endpoint for taperthreadK:For taperthread, useeither A orKword.Cuttertip point angle(0°<. B< 180...

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    kI13277-EP-17013-2-3. M Code Specifying ThreadCutting Mode andInfeed PatternIn theblock calling for threadcutting compound fixed cycle, M codesspecifying threadcutting modeand infeed pattern should be presented.(1)M codespecifyingcutting modeM32.....straight infeed along thread face (on left face...

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    327 7-EP-171Infeed Pattern 3:a)M32, M34 is designated.1)D2 > (H2- (H- U(W))2 }Each threadcutting pathin thecycleis deter¬mined by the cuttingpoint which is the depthfromtheworkpiece OD; thefirst pathis created atcutting point "D", the second path atcuttingpoint "/2D", and ...

  • Page 7

    3277-EP-1722)D2< {H2 - (H-U ( W ) ) 2iIn each thread cutting path, assume thethreadcutting point dl (= D) andmetal removal volumeSIfor the first path, d2andS2 forthe second path,and dnand Snfor the "n!,th path, then cuttingpoints d2 todn (n = even number)for the evennumbered paths aredete...

  • Page 8

    3277-EP-173With combining the Mcodesspecifying cutting mode andinfeed pattern,six typesof threadcutting cycle areavailable forlongitudinal threadcutting cycle and transversethread cutting cycle,respectively.(1)Longitudinal ThreadCutting CompoundFixed Cyclea)M32 +M73 ModeADis aremainder of(H- U)/D...

  • Page 9

    32 77 —EP-174c)M32 +M74 ModeCutting pointD/2\\3\\D/2\H/2D/2D/2A D/2:w 'U/2:d)M33 +M74 Mode:-Cutting pointD/2\D/2UD/2H/2D/2AD/4AD 4y/2OKU/A MACHINERY WORKS LTD.

  • Page 10

    3277—S P-175e)M32 + M75 Mode (Infeed Pattern 3, B2> fH2 - (H- U(w))2 ) 'i— Cutting pointD/21st cycle\fZ D/2H/22ndcycle3rd cyclev'n D/2(H-UJ/2"n”th cycleU/2!•t;f)M3 3 + M75 Mode (Infeed Pattern 3,D2 / {H2 - H- U (W))2})!-Cutting pointi72D/41st cycleyÿD/2i.H/22nd cyclev/nD/2(H-U)/2...

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    Hr.,-'3pK3277-EP-176g)M32+ M75 Mode(Infeed Patern3,D2 < {H2 - (H- U(W))2} orInfeed Pattern 4)dn/ 2 :Cuttingpoint for"n"th cycleS2CuttingpointAW*\\\\VK sl'Qi!\CM/1stNcyclersCMxCMr:S4\y/ 2nd cycle//3rd cycle4th cycleCMCM/--SCMx:35x!ÿ'§"n"th cyclefC43h)M33 +M75 Mode(Infeed P...

  • Page 12

    3277-EP-177(2)Transverse Thread Cutting CompoundFixed Cyclea)M3 2 +M73 ModeAD is aremainder of(H- W)/D.H'"ICutting point|1DDDW// \ \ D/4D/S/ \ D/Sb)M33 + M73 ModeH/ifiifCutting pointi1ii!I1I!tiw/ I \3V9s(D4ADy2(DÿD)4DD/8 | \ D/8DOKUMA MACHINERYWORKS LTD.-iiH :HHHHI

  • Page 13

    aMmmmt3277-EP-178c)M32 +M74 ModeH.|:Cutting pointIDWADDDD7d)M33 +M74 ModeHHI,iCutting pointDDV \DD\AD/2AD/2W/“S.iSIIA A At>kA/‘'UtklCTIW U/ADj/Q iTT>

  • Page 14

    IP*ÿ(«:t* JW»WSiÿ»wS!»v-1iihhfD£mLOLOu..:>hO££++"I"nMth cycle-JCnLn"n"th cycless3rd cycleafDV;,'mmaCDo1A3rd cyclecI&2ndcycleSio52nd cycle>x( ">XXX1st cycle5SiOImx?s11stcycleo<&O<oX?(/)ooroi -OiortOrt£rtH*nO'-ffQT3O-Ou>H*PN>Prtrt"...

  • Page 15

    .......";......mim..'|V::-v ••ÿ•••.3277-EP-180g)M32 +M75 Mode(Infeed Pattern3,D2 < {H2 - (H- U(W))ÿ} or Infeed Pattern 4)Hldn/2 :Cutting point for"n"th cycleIS2s3si:ISICutting pointIiII dl (=D) Iid2Vd3iId4iIdn:I—WH-W:-1h)M33+ M75 Mode(Infeed Pattern3,- (H- U(W))ÿ ...

  • Page 16

    r3277-EP-18113-2-4. P Codesin theG71 and G72 ThreadCutting Cycles(2-Saddle Specification)Pcodesin acompound fixed threadcutting cycle synchronize the startofturretsAand B ateachthread cutting starting point.thread cutting passesdifferbetween the twoturrets, the turretwhichhascompleted the program...

  • Page 17

    fillBillP?=1SBmm0M3277-EP-182OPTION.13-2-5. Multi-thread ThreadCutting Functionin CompoundFixed ThreadCuttingCycleIn thethreadcutting cycle called by G32,G33, etc.cutting cycleis designated bydesignating the phasedifference with aCcommand.designated by simplydesignating the number of threadswith ...

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