127
96-8000 Rev AC
May 2010
4t
h
&
5th
Axis
M12/M13 engages/disengages the B-axis brake
When in a 4 or 5 axis cut, the machine will pause between blocks. This pause
is due to the A and/or B axis brakes releasing. To avoid this dwell and allow
for smoother program execution, program an M11 and/or M13 just before the
G93. The M-codes will disengage the brakes, resulting in a smother motion
and an uninterrupted flow of motion. Remember that if the brakes are never re-
engaged, they will remain off indefinitely.
Settings
A number of settings are used to program the 4th and 5th axis. See settings
30, 34 and 48 for the 4th axis and 78, 79 and 80 for the 5th axis.
Setting 85 should be set to .0500 for 5-axis cutting. Settings lower than .0500
will move the machine closer to an exact stop and cause uneven motion.
G187 can also be used in the program to slow the axes down.
Caution! When cutting in 5-axis mode poor positioning and over-travel
can occur if the tool length offset (H-code) is not canceled. To avoid this
problem use G90 G40, H00 and G49 in the first blocks after a tool change.
This problem can occur when mixing 3-axis and 5-axis programming,
restarting a program or when starting a new job and the tool length offset
is still in effect.
Feed Rates
A feed-rate must be commanded for each line of 4 and/or 5 axis code. Limit the
feed-rate to less than 75IPM when drilling. The recommended feeds for finish
machining in 3-axis work should not exceed 50 to 60 IPM with at least .0500” to
.0750” stock remaining for the finish operation.
Rapid moves are not allowed; rapid motions, entering and exiting holes (full
retract peck-drill cycle) are not supported.
When programming simultaneous 5-axis motion, less material allowance is re
-
quired and higher feedrates may be permitted. Depending on finish allowance,
length of cutter and type of profile being cut, higher feed rates may be possible.
For example, when cutting mold lines or long flowing contours, feedrates may
exceed 100 IPM.
Jogging the 4th and 5th Axis
All aspects of handle jogging for the fifth axis work as they do for the other
axes. The exception is the method of selecting jog between axis A and axis B.
By default the ‘+A’ and ‘-A’ keys, when pressed, will select the A axis for jog
-
ging. The
B
axis can be selected for jogging by pressing the Shift button, and
then pressing either the ‘+A’ or ‘-A’ key.
EC-300
: Jog mode shows A1 and A2, use “A” to jog A1 and Shift “A” to jog A2.
Summary of Contents for 96-8000
Page 15: ...6 96 8000 Rev AC May 2010 Mill Warning Decals ...
Page 16: ...7 96 8000 Rev AC May 2010 Safety Lathe Warning Decals ...
Page 41: ...32 96 8000 Rev AC May 2010 ...
Page 93: ...84 96 8000 Rev AC May 2010 ...
Page 129: ...120 96 8000 Rev AC May 2010 ...
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