GSK 980TC3 Series, Manual

Page: 183 / 226

Chapter 4 Machine Debugging
171
Inst
allation
and
Ⅳ
connection
lead screw backlash in MPG or single step mode is not recommended, and the following method is
suggested:
z Editing a program:
O0001 ；
N10 G01 U1 F800
；
N20 U1 ；
N30 U1
；
N40 U-1 ；
N50 M30
；
z The backlash error compensation value is set as 0 before measuring;
z In the running program of a single block, find the measuring datum A after positioning two
times, record the current data, run 1mm in the same direction, and then run 1mm to point B
in opposite direction, finally 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 micrometer.
Note 1: The backlash compensation amount of each axis is set by data parameters P190~P194.
Note 2: The mode of backlash compensation amount and the compensation frequency are set by data
parameters P195~P199.
Note 3: To guarantee the machine precision, the backlash can be detected again after the machine is unused
for three months.
System parameter number
0 1 8 RVCS RBK RVIT
RVIT =1: When the backlash is greater than the gap allowance value, the next
block is executed after the compensation is completed.
=0: When the backlash is greater than the gap allowance value, the next
block is executed before the compensation is completed.
RBK =1: Cutting/rapid traverse separately executes backlash compensation.
=0: Cutting/rapid traverse does not separately execute backlash
A
B
Read the
data position
Opposite
direction