Bevel cutting compensation Additional Manual Page 2
Additional Manual
01 00.11.24 Murakawa Miyajima Newly designed.
Drawing No.
A - 78314E
Tilte
FANUC Series 16i /160i -LA
Bevel Cutting Compensation
Specification
Edit Date Design Recog. Contents Page 2 / 7
1. Outline
In most case of bevel cutting, the tool center point (TCP) of the fixed nozzle (Attitude control-B
function) is set on the bottom side of workpiece. When the bevel angle is changing continuously,
the nozzle rotates around this TCP. (Figure 1) Therefore, the nozzle would have a collision with
the surface of workpiece. Usually this collision is avoided by using the Z-axis tracing function.
However, it would lead to trajectory error. (Figure 2)
Nozzle
Tool Center Point
Workpiece
Figure 1
Nozzle
Trajectory error
Figure 2
Workpiece
Z-axis trace
The bevel cutting compensation function makes to change the arithmetical 2nd arm length depend
on the bevel angle in the procedure of fixed nozzle, and leads no trajectory error. (Figure 3) This is
an optional function.
When the bevel angle is θ, the arithmetical 2nd
arm length is (L+H/cosθ). As the bevel angle θ
changes, (L+H/cosθ) changes.
CNC manages the procedure of fixed nozzle
continuously by using (L+H/cosθ) for 2nd arm
length.
Nozzle
Tool Center Point
Figure 3
H/cosθ
Workpiece
2nd arm
length
L
L
Tool length
offset
Bevel angle
θ
Contents Summary of Bevel cutting compensation Additional Manual
- Page 1FANUC Series 16i /160i -LA Bevel Cutting Compensation Specifications • The specifications contain optional functions. • The specifications are subject to change without notice because of the improvement. Tilte FANUC Series 16i /160i -LA Bevel Cutting Compensation Specification 01 00.11.24 Murakawa M
- Page 21. Outline In most case of bevel cutting, the tool center point (TCP) of the fixed nozzle (Attitude control-B function) is set on the bottom side of workpiece. When the bevel angle is changing continuously, the nozzle rotates around this TCP. (Figure 1) Therefore, the nozzle would have a collision w
- Page 32. Format G71 P1 ; Starts the bevel cutting mode. G71 P0 ; Cancels the bevel cutting mode. The bevel cutting compensation function is active during the bevel cutting mode. The bevel cutting compensation function manages the procedure of fixed nozzle continuously by using the arithmetic 2nd arm lengt
- Page 44. Preset work coordinate system at the bevel cutting mode off The bevel cutting mode can be started and cancelled (G71 P1 and G71 P0 are executed and Reset) at any bevel angle. However, if the bevel angle is different between the bevel cutting mode is started and cancelled, the work coordinate syst
- Page 56. Alarm Alarm No. Contents P/S4021 If the bevel angle is commanded in order to over the parameter No.15624 during the bevel cutting mode, P/S4021 alarm is occurred before the 5th axis motion. Also, if G71 R_ is commanded during the bevel cutting mode, P/S4021 alarm is occurred. Note) As the bevel a
- Page 6(2) No.15548 = 100 This parameter is velocity coefficient in New trace function. If trace axis had overshoot, this parameter is used for adjustment. Usually, please set to 100. (Unit : %) (3) No.15547_Z & _W Set the travel distance per rotation of Z-axis (or W-axis) motor. (Unit : 0.001mm) This para
- Page 78.4 Sequence When the trace on / off is managed by TCST signal, please make ladder sequence as following. (1) Trace on sequence Trace on M code Next block FIN