The figure illustrates a detail of 6 grooves to achieve a cardanic PTO executed using the REV BROACHING TOOL. This is a special piece which required profiling an insert specifically for this purpose. A chamfered edge of 0.2X45° was also executed on the intersecting point between hole and keyway seating, therefore making the piece completely burr-free. Broaching carried out using the REV BROACHING TOOL is therefore perfectly centred on the workpiece and, having been carried out directly on the lathe, it considerably reduced production times. Also for this type of machining, our company can provide specific programmes for any CNC machine currently on the market.

PROGRAMMING EXAMPLES:

Highlighted in red only the values that require editing   

O1000(RECALL MACRO O1000)   
#1=0 (0=INT PROCESSING 1=EXT PROCESSING)  
#2=0707 (TOOL NUMBER- WARNING DO NOT ENTER T BEFORE 0707)  
#3=15.0 (Z AXIS WORK START DISTANCE)  
#4=0.2 (X AXIS WORK START DISTANCE)  
#5=25 (HOLE OR SHAFT DIAMETER)  
#6=8 (INSERT WIDTH)  
#7=3.3 (PROCESSING DEPTH ON X AXIS RADIUS)  
#8=30 (PROCESSING LENGTH ON Z AXIS)  
#9=6000 (CUTTING SPEED IN MILLIMETRES PER MINUTE)  
#10=0,05 (INCREMENT OF EACH PASS)  
#11=0 (ADMITTED DRAUGHT ERROR ON LONGITUDINAL RADIUS OF 0.25 MAX)  
#12=45(DEPARTURE ANGLE 90°/45°)  
#13=2 (NUMBER OF FINISHINGS WITHOUT REMOVAL)  
#14=6 (NUMBER OF OPERATIONS)  
#15=0 (C-AXIS ANGLE BEFORE PROCESSING)  
#16=60 (ANGLE BETWEEN OPERATIONS)  
#17=0 (CODE G RETURN 0= FAST/ 1=WORK)  
#18=6000 (FEED BACK Z AXIS ACTIVATED ONLY IF #17=1)  
#19=0 (WORKING ANGLE 0=CYLINDRICAL/WITH VALUE=CONICAL)  
#20=0 (HELIX ANGLE +- INTERPOLATED WITH C AXIS)  
#21=0 ( PRIMITIVE DIAMETER OF SPIRAL TEETH)  
#22=35 (CODE M ON C AXIS )  
#23=34 (CODE M OFF C AXIS)  
#24=90 (CODE M BRAKE RELEASE C AXIS)  
#25=89 (CODE M BRAKE LOCK C AXIS)  
#26=8 (REFRIGERANT 8=ON 0=OFF)  
#27=1 (BRAKE 0=NO 1=YES)   

M98P8000 (RECALL MACRO)   

(M99=BACK TO MAIN PROGRAMME)  
OR (M30=END PROGRAMME)