GSK 218M, Руководство по подключению и программированию PLC

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GSK218M CNC System Connection and PLC Manual
178
4.5 Backlash compensation
Use the gauge, micrometer gauge or laser master gauge to measure the backlash, the
backlash compensation must be precise, otherwise it cannot improve the precision of
processing and it is suggested that the following methods should be adopted to measure the
leading screw backlash instead of MPG(handwheel) or single step:
z Edit program:
O0001 ；
N10 G01 G91 X1 F800
；
N20 X1
；
N30 X1 ；
N40 X-1
；
N50 M30 .
z The backlash error compensation value is set to zero before measuring.
z
The program runs during Single block mode, and the CNC looks for the measure datum
point A after positioning two times, the program runs 1mm and reversly runs 1mm to B
point, and the CNC reads the current data.
Fig. 4-5-1 backlash measure method
z Backlash error compensation value= |data recorded by A point –data recorded by B point|;
input the operation result to the system parameter No.190.
Data A: read the data of gauge at the A point;
Data B: read the data of micrometer gauge at the B point;
Pulse equivalent: 1 micron
Note: 1. The system parameter NO.195~NO.199 can set the backlash compensation mode
and the compensation frequency.
2. To get the high precision, the backlash must be checked after the machine has been
used for 3 months.
Read data position
Reverse position
A
B