FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
159
e (set by a parameter)
Fig. 14.2.1 (e) Chamfering in Stock Removal in Turning (Type II)
The clearance e (specified in R) to be provided after cutting can also be
set in parameter No. 5133.
A sample cutting path is given below:
18
23
28
30
27
26
24
25
22
9
10
2
14
20
7
13
19
5
1
6
11
12
16
17
8
4
21
15
29
3
Fig. 14.2.1 (f) Cutting Path in Stock Removal in Facing
The offset of the tool tip radius is not added to finishing allowances
u and w. In turning, the offset of the tool tip radius is assumed to be
zero.
W=0 must be specified ; otherwise, the tool tip may cut into one wall side.
For the first block of a repetitive portion, two axes X(U) and Z (W) must
be specified. When Z motion is not performed, W0 is also specified.
When only one axis is specified in the first block of a repetitive portion
Type I
When two axes are specified in the first block of a repetitive portion
Type II
When the first block does not include Z motion and type IIis to be used,
W0 must be specified.
(Example)
TYPEI TYPEII
G71 V10.0 R5.0 ; G71 V10.0 R5.0 ;
G71 P100 Q200....; G71 P100 Q200........;
N100X (U)___; N100X (U)___ Z(W)___;
::
::
N200..............; N200.........................;
D Distinction between type
I and type II

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