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GSK218MC Series Machining Center CNC System PLC&Installation Connetion Manual
204
V
o
lume IV
Inst
allation
&
Connecti
o
n
4.5 Backlash Compensation
The machining accuracy can be enhanced using the dialgage, micrometer gauge or laser
inspection measure, and backlash compensation with precision compensation; and therefore, it is not
recommended that the screw backlash can not be measured by MPG or single step method. It is better
to measure the backlash based upon the following method:
z
Program editing:
O0001
；
N10 G01 G91 X1 F800
；
N20 X1
；
N30 X1
；
N40 X-1
；
N50 M30
；
z
The backlash error compensation value is set as 0 before measuring;
z
Single operation program, find a measure reference A after positioning twice, the record the
current data; operation for 1mm along with the same direction, then operation 1mm to point B
reversely, and lastly read the current data.
Fig. 4-5-1 Measuring method of the backlash
z
The backlash error compensation value= | The data recorded by point A-the data recorded by
point B|; The calculated data are input into the corresponding system parameters.
Data A: The data of dial gauge in Point A;
Data B: The data of dial gauge in Point B;
Pulse equivalent:1
μ
m
Note 1: Data parameter
P190~P194 set the backlash compensation value of each axis
Note 2:
The backlash method and compensation frequency can be set by data parameter P195~P199.
Note 3:
In order to guarantee the machine accuracy, inspect the backlash again after using the machine for 3
months.
