
I. Outline
Better niachining accuracy and extended machine life are possible by compensating
for errors in the detection unit caused by the positions of mechanical systems such
as the pitch error of the feed screw. Compensation is performed along an approximately
straight line produced by the compensation points set in the parameters and the
corresponding compensation amount.
This function is option.
2. Functions
Three approximately straight lines can be made from the four compensation points .
set in the parameters and the amount of compensation. Compensation is performed
along these lines at the compensation intervals of the pitch error compensation
points. The amount of inclination compensation is superposed on the amount of
pitch error compensation.
Pitch error compensation points
0 1 2 3 61 62 126 127
0 8 J J @l i @
Machine coordinates of compensation axis
a
b
C d
Supposing that the stored pitch error compensation parameters are set.
0 Pitch error compensation point
number nearest the “0” end
(Parameter 3 6 2 1)
Q Interval between pitch error
compensation points
(Parameter 3 6 2 4)
@ Pitch error compensation number
for reference point
(Parameter 3 6 2 0)
@ Pitch error compensation number
nearest the “+” end
(Parameter 3 6 2 3)
The parameters for inclination compensation are set as follows.
a,
b, c, d Compensation point numbers
(Parameters 5 8 6 1 - 5 8 6 4)
a, P, Y9
5 Amount of compensation
at points a,b,c,and d
(Parameters 5 8 7 1 - 5 8 7 4)
01 1997.8.11
NEWLY
FANUC Series 16i/18i
Tim SPECIFICATIONS FOR
COMPENSATION
NO.
AD-2000069
EDT
0
DATE
DESIG. DESCRIPTION
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1 FANlJC LTDl PAa 12 /005