Specifications

2 PARAMETER
2-168
2-3-7 User parameter TURNING (TC)
Classification
USER
Display title
TURNING
Address Meaning
Description
Cut depth reduction rate for rough cutting in
bar machining unit, corner machining unit,
and copy machining unit
Program type M
Conditions Immediate
TC1
Unit %
Setting range 0 to 100
Cut depth can be reduced as remaining workpiece thickness becomes
less in rough cutting in bar machining unit, corner machining unit, and
copy machining unit. Reduced cut depth (A) can be expressed by
A = T ×
TC1
100
where T = Remaining thickness (radial value).
Acceleration rate in up-going taper for
rough cutting in bar machining unit
Program type M
Conditions Immediate
TC2
Unit %
Setting range 0 to 500
F
2
= F
1
×
TC2
100
×
b
a
NM211-00262
a
b
F
1
F
2
F
1
: Feed rate for rough cutting
F
2
: Increased feed rate
This is effective only when TC141 (bit 0) = 1.
Acceleration rate in up-going wall slope
(90°) for rough cutting in bar machining unit
Program type M
Conditions Immediate
TC3
Unit %
Setting range 0 to 500
F
1
: Feed rate for rough cutting
F
2
: Increased feed rate
F
2
F
1
NM211-00263
F
2
= F
1
×
TC3
100
Note: Up to 500 % can be set.
This is effective only when
TC141 (bit 0) = 1.
Selection of escape pattern from wall (90°)
in rough cutting cycle
Program type E
Conditions Immediate
TC4
Unit —
Setting range 0 to 2
This parameter will be used to select escape pattern (0, 1 or 2) when wall
is vertical in G71/G72 mode.
TC4 = 0: Identical with ordinary path
TC4 = 1: Escape at 45° from wall
TC4
= 2: Feed rate accelerated at wall
Accelerated feed rate F is expressed as follows.
F = F
0
×
TC3
100
(where F
0
= Feed rate specified in program)
(!TC3)
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