The figure illustrates an example of spiral toothing. This operation is performed using the REV BROACHING TOOL. It is a special piece requiring a special, ad hoc insert that is profiled for this purpose. The recommended solution is to then execute a chamfered edge of 0.2x45° on the intersecting point between the hole diameter and the tooth seat, to achieve a completely burr-free piece. Broaching using the REV BROACHING TOOL is therefore perfectly centred on the workpiece and, being carried out directly on the lathe, it considerably reduces production times. For this type of machining, programming directly on the CNC would be extremely complex, however, it becomes extremely simple using the programme offered by our Company.

PROGRAMMING EXAMPLES:

Highlighted in redonly the values that require editing

O1000(RECALL MACRO O1000)

#1=1 (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 FROM WORKPIECE)
#4=0.2 (X AXIS WORK START DISTANCE FROM DIAMETER OF INT. OR EXT. WORKPIECE)
#5=32 (HOLE OR SHAFT DIAMETER)
#6=0.5 (INSERT WIDTH)
#7=2.0 (PROCESSING DEPTH ON X AXIS RADIUS)
#8=35 (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=90 (DEPARTURE ANGLE 90°/45°)
#13=2 (NUMBER OF FINISHINGS WITHOUT REMOVAL)
#14=18 (NUMBER OF OPERATIONS)
#15=0 (C-AXIS ANGLE BEFORE PROCESSING)
#16=20 (ANGLE BETWEEN OPERATIONS)
#17=0 (CODE G RETURN 0= FAST 1=WORK)
#18=6000 (FEED BACK Z AXIS ACTIVATED ONLY IF #17=1)
#19=10 (WORKING ANGLE OF SPIRAL TOOTHING 0=CYLINDRICAL/WITH VALUE=CONICAL)
#20=30 ( PRIMITIVE DIAMETER OF SPIRAL TEETH)
#21=15 (HELIX ANGLE +- INTERPOLATED WITH C AXIS)
#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 OF PROGRAMME)