Operator`s manual

Advanced Haas Mill Programming Techniques Training Manual Page 33
Controlling Feed and Speeds for different materials within the same program
If the same part is made of two different materials, different speeds for the different materials may be
controlled within the same program using the Bock Delete function. This will save you from having two
different programs of the same part made of different materials. The following example is given for
making the same part out of medium alloy steel and cast iron. The alloy steel is run a surface speed of 80
ft/min and the cast iron is run at a surface speed of 100 ft/min. The coolant is turned off for the cast iron.
Both cast iron and alloy steel are fed at a rate of .005”/minute.
T2 M06 (1/4 DRILL)
G00 G53 Z0 (TURN ON BLOCK DELETE FOR CAST IRON)
G00 G90 G54 X0.5 Y0.5 M03
S1530
/S1220
G43 H02 Z1.
/M08
F7.6
/ F6.1
G98 G83 Z-1.1 R.1 Q0.250
Y2.5
X3.5
Y0.5
G00 G80 Z1. M09
M05
G00 G53 Z0
M30
With the Block Delete off, the spindle speed is 1220 rev/min, the feed rate is 6.1 in/min with the coolant
on. This corresponds to feed and speed calculated for medium alloy steel with coolant on.
When the Block Delete is on, the spindle speed becomes 1530 rev/min and the feed rate 7.6 in/min. Also
the coolant is never turned on. This corresponds to the feed and speed calculated for the cast iron.