Generating NC Output for Multi-Turret Turning Machining

You can generate NC data for the Generic Machine. NC data is generated as one Manufacturing Program per file or several Manufacturing Programs in a single file. Each turret (channel) is segregated by means of program header and specific syntaxes. For easier post-processing, specific syntaxes cross programs for identifying synchronizations and spindles.

See Also
Syntaxes for Multi-Slide Lathe Machine Environment
  1. Right-click Machining Operation in the Activities Process tree and select Generate NC Code Interactively .
  2. In the dialog box that appears, set the parameters and click Execute to generate the NC data.

    The sample below shows the type of data on your output file.

    $$ ------------------------------------------------------
$$ Generated on Wednesday, July 30, 2008 5:09:49 PM
$$ CATIA APT VERSION 1.0
$$ ------------------------------------------------------
CHANNEL,2
$$ PGM LT
$$ Part Operation: Multi-turret lathe machine
$$*CATIA0
$$ PGM LT
$$ 0.00000 0.00000 1.00000 0.00000
$$ 1.00000 0.00000 0.00000 0.00000
$$ 0.00000 1.00000 0.00000 0.00000
PARTNO PART TO BE MACHINED
COOLNT/ON
CUTCOM/OFF 
$$ OPERATION NAME : Turning Tool Change.2 
$$ Start generation of : Turning Tool Change.2 
FROM / 0.00000, 100.00000, 0.00000 
$$ TOOLCHANGEBEGINNING 
CUTTER/ 28.000000 
TOOLNO/1,TURN 
LOADTL/1 
$$ TOOLCHANGEEND 
$$ End of generation of : Turning Tool Change.2 
$$ OPERATION NAME : Drilling.1 
$$ Start generation of : Drilling.1 
LOADTL/3,1 
TLAXIS/ 0.000000, 0.000000, 1.000000 
SPINDL/ 70.0000,RPM,CLW 
RAPID 
GOTO / 0.00000, 0.00000, 10.00000 
RAPID 
GOTO / 0.00000, 0.00000, 1.00000 
CYCLE/DRILL, 60.206665, 1.000000, 0.400000,MMPR 
GOTO / 0.00000, 0.00000, 0.00000 
CYCLE/OFF 
RAPID 
GOTO / 0.00000, 0.00000, 10.00000 
SYNC/1,2,1, 
$$ End of generation of : Drilling.1 
SPINDL/OFF 
REWIND/0 
END 
			 
$$ ------------------------------------------------------ 
$$ Generated on Wednesday, July 30, 2008 5:09:51 PM 
$$ CATIA APT VERSION 1.0 
$$ ------------------------------------------------------ 
CHANNEL,1 
$$ PGM UT 
$$ Part Operation: Multi-turret lathe machine 
$$*CATIA0 
$$ PGM UT 
$$ 0.00000 0.00000 1.00000 0.00000 
$$ 1.00000 0.00000 0.00000 0.00000 
$$ 0.00000 1.00000 0.00000 0.00000 
PARTNO PART TO BE MACHINED 
COOLNT/ON 
CUTCOM/OFF 
$$ OPERATION NAME : Turning Tool Change.1 
$$ Start generation of : Turning Tool Change.1 
FROM / 0.00000, 100.00000, 0.00000 
$$ TOOLCHANGEBEGINNING 
CUTTER/ 1.000000 
TOOLNO/1,TURN 
LOADTL/1 
$$ TOOLCHANGEEND 
$$ End of generation of : Turning Tool Change.1 
$$ OPERATION NAME : External Roughing 
$$ Start generation of : External Roughing 
SYNC/1,1,2, 
SWITCH/9 
FEDRAT/ 1.0000,MMPR 
SPINDL/ 70.0000,RPM 
GOTO / 28.00000, 0.00000, 2.50000 
GOTO / 28.00000, 0.00000, 0.50000 
FEDRAT/ 0.8000,MMPR 
GOTO / 28.00000, 0.00000, -49.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 28.21213, 0.00000, -49.28787 
RAPID 
GOTO / 28.21213, 0.00000, 2.50000 
RAPID 
GOTO / 25.50000, 0.00000, 2.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 25.50000, 0.00000, 0.50000 
FEDRAT/ 0.8000,MMPR 
GOTO / 25.50000, 0.00000, -49.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 25.71213, 0.00000, -49.28787 
RAPID 
GOTO / 25.71213, 0.00000, 2.50000 
RAPID 
GOTO / 23.00000, 0.00000, 2.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 23.00000, 0.00000, 0.50000 
FEDRAT/ 0.8000,MMPR 
GOTO / 23.00000, 0.00000, -49.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 23.21213, 0.00000, -49.28787 
RAPID 
GOTO / 23.21213, 0.00000, 2.50000 
RAPID 
GOTO / 20.50000, 0.00000, 2.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 20.50000, 0.00000, 0.50000 
FEDRAT/ 0.8000,MMPR 
GOTO / 20.50000, 0.00000, -49.50000 
FEDRAT/ 1.0000,MMPR 
GOTO / 20.71213, 0.00000, -49.28787 
$$ End of generation of : External Roughing 
SPINDL/OFF 
REWIND/0 
END

    The Manufacturing Program PGM UT on CHANNEL 1 (upper turret) is synchronized with the Manufacturing Program PGM LT on CHANNEL 2 (lower turret) by means of the SYNC/1,1,2 statements. In this example, the start of the Rough Turning operation and the end of Drilling is synchronized.

    *START_NC_INSTRUCTION     NC_PROGRAM_HEADER 
*START_SEQUENCE 
CHANNEL,%MFG_CHANNEL_NUMBER 
*END 
*END

    MFG_CHANNEL_NUMBER : channel (turret) number associated to the Manufacturing Program.

    *START_NC_COMMAND      NC_SYNCHRONISATION 
SYNC/%MFG_SYNCHRONISATION_NUMBER,%MFG_CHANNEL1,%MFG_CHANNEL2 
*END

    • MFG_SYNCHRONISATION_NUMBER: index of the synchronization.
    • MFG_CHANNEL1: first synchronized channel.
    • MFG_CHANNEL2: second synchronized channel.