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Spindle Amplifier Additional Manual Page 4

Additional Manual
4/7
Design.
Date Ed.
A
u
g
./25/05
S
HEET
DRAW. No.
C
U
S
T.
TITLE
M. Niwa
Newly
Spindle Amplifier αi series
Backlash Acceleration Description
A
-53866E-0468
FANUC LTD
01
5. Tuning example
5.1. CNC Program
Prepare following program that draw arc (eccentric circle) in polar coordinate interpolation.
G90 ← Absolute
G54 ← Select workpiece coordinate 1
G00 X15. C0. ← Move to start point
G5.1 Q1 ← AI Contour Control ON
G12.1 ← Polar coordinate interpolation ON
G04 X5. ← Dwell. Press “Origin” button(Refer to section 5.3).
G02 I20. J0 ← Draw circle
G13.1 ← Polar coordinate interpolation OFF
G5.1 Q0 ← AI Contour Control OFF
M99 ← End of program
15mm 20mm
Imaginary C-axis
X-axis
C-axis move area
Center of circle (35, 0)
Radius of circle 20mm
Start
p
oint
(
15, 0
)
Origin of workpiece
coordinate system 1
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Contents Summary of Spindle Amplifier Additional Manual

  • Page 1Spindle Amplifier αi series Backlash Acceleration Description 1. General .............................................................................................................................................. 2 1.1. Overview ....................................................................
  • Page 21. General 1.1. Overview This manual describes how to use Spindle Backlash Acceleration function. 1.2. Remarks ・ This function is valid in advanced feedforward of Cs contouring control mode. ・ Following functions cannot be used with this function simultaneously (1) Sub-spindle of Spindle switching c
  • Page 34. Related parameters 4.1. List of related parameters Parameter No. Description 15i 16i 30i 3402#0 4402#0 4402#0 Function bit of Spindle Backlash Acceleration 3402#1 4402#1 4402#1 Setting of feedforward coefficient at backlash acceleration 3455 4455 4455 Amount of backlash acceleration 3456 4456 445
  • Page 45. Tuning example 5.1. CNC Program Prepare following program that draw arc (eccentric circle) in polar coordinate interpolation. Imaginary C-axis 15mm 20mm C-axis move area Center of circle (35, 0) Radius of circle 20mm X-axis Origin of workpiece Start point (15, 0) coordinate system 1 G90 ← Absolut
  • Page 55.2. Preparation of data measurement by SERVO GUIDE Open graph window of SERVO GUIDE, and execute channel setting as follows. Set distance between start point and origin. 2 2 √15 +0 = 15 (mm) Set angle of start point. -1 tan (0/15) = 0 (deg) TITLE Spindle Amplifier αi series Backlash Acceleration De
  • Page 65.3. Data measurement and display by SERVO GUIDE Execute CNC program described previously, and press button during dwell for origin operation. Then press button for starting measurement. Change graph mode of SERVO GUIDE and display circle after measurement. XTYT mode NORMAL mode Change mode from men
  • Page 75.4. Tuning Viewing arc figure in CIRCLE mode of graph window, tune parameters as follows. (a) Set following initial values. Amount of backlash acceleration (No.4455) : 5 Stop timing of backlash acceleration (No.4456) :100 (b) Raise Amount of backlash acceleration (No.4455) until peak value of quadr