Wire EDM Machine Operation Chapter 10
Copyright November, 98 Page 10-14 Sodick Inc.
A
A
U
U
T
T
O
O
M
M
A
A
T
T
I
I
C
C
C
C
O
O
R
R
N
N
E
E
R
R
R
R
O
O
U
U
N
N
D
D
I
I
N
N
G
G
This feature was discussed during our descriptions of motion types (concept number three
about G02 and G03 circular commands.) Here we will take it a little further. However,
remember that these techniques may not perform the desired taper for die machining. If
you use these techniques, the radius at the top of the die will match the radius at the
bottom of the die. The use of G02 and G03 with the I and J is a better method for making
circular movements on a die, since the radius will grow with the taper in the die.
However, if you are programming shapes that do not require conical taper or no taper at
all these techniques can make manual programming much simpler.
The basic idea with automatic corner rounding is that you are allowed to program directly
to the intersection point of two surfaces and simply include an “R” word (for the desired
radius) in the command to the intersection point. The control will automatically start
rounding when it approaches the intersection point.
The information on page 5-5 through 5-7 and the information on this page show you how
to use it.
USING AUTOMATIC CORNER ROUNDING “R WORD”
Notice with automatic corner rounding that block number N0011 included an R word to
tell the control to start rounding as it approached X-.5. Also notice that the X-.5. is the
intersection point to the next surface to machine. While this technique is quite simple to
understand, remember the limitations related to taper cutting. You may be tempted to use
this technique to program a punch (since a punch does not have any taper). But many
times you will want to use the punch program to make the die program. In most cases you
will have to use G02 and G03 to accomplish this.
NOTE: Offset code G41 (or G42) is required in the program for the R word to work. If
you want to cut without offset, simply include the G41 (or G42) code and use H000 for
the offset value.
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