2.8,30.2 Circular Arc Multiple Cornering (G 112) (Cent’d)
(2)
Meaning of addresses
First
The word addresses for circular arc multiple
Rounding
cornering command are as shown below :
Table 2.40
Address
Word
x (u)
z (w)
I
K
R
P
Q
c
D
(3)
a.
Contents
X-axis end point coordinates
for arc combined rounding in
turning
(U: Increment from start point)
Z-axis end point coordinates
for arc combined rounding in
facing
(W: Increment from start point)
X-axis distance from arc center
start point
Z-%is distance from arc center
start point
Circular arc radius
First rounding radius (without
Second
Unit
Beveling
Second
Rounding
Table 2.41 (Cent’d)
The rounding which is performed in the radius
designated by P command in contact with straight
line and circular arc.
The beveling which is performed in the dimensions
designated by D commarid at the intersection
between the circular arc and the straight line par-
allel to Z-wis designated by X (U) command
(circular arc in turning) or the straight line parallel
to X-axis designated by Z (W) command (arc in
facing).
The rounding which is performed in the radius
designated by Q command in contact with the
circular =C and the straight line parallel to Z-ais
designated by X (U) command (circular arc in
turning) or the straight line parallel to X-axis desig-
nated by Z (W) command (arc in facing).
1 = 0.001 mm or
1 = 0.0001 in,
(decimal point
mav be en-
ter~d)
CENTER OF
CENTER OF
CIRCULAR
CIRCULAR
ARC
a;, ;-
sign)
Second rounding radius (without i
sign)
--
4
First beveling amount (without
m ‘fm
sign)
CENTER OF ~
Second beveling amount 1
(without sign)
L’:AR\ ; “:’’”
Designation of contours
r-----l
R
R
The contours of the portions to be subject-
ed to circular arc multiple cornering are as
shown below :
‘~
STA~l
~ POINT
POINT ~
n
n
Table 2,41
Straight
Line
The straight line which is parallel to Z-axis (arc
in turning) or X-axis (arc in facing) from the start
point,
The point from which the arc is circulated is
Circular
designated by I and K commands from the start
Arc
point.
First
The beveling which is performed in the dimensions
Beveling
designated by C command at the intersection of
straight line and circular arc.
144
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