Official GSK Agents in South Africa
Tel: +27 11 626 2720, [email protected]
Chapter Four Machine Debugging
209
V
o
lume IV
Inst
allation &
Connecti
on
Fig. 4-7-3
Note: The relative parameter of each pitch error compensation should be strictly set based upon the actual
situation when inspecting the pitch error; the machine accuracy may reduce if the setting error occurs.
z
The corresponding relationship between the pitch error compensation amount and the
reference point compensation series number
The corresponding relationship between the pitch error compensation amount and the
compensation number is shown in the Fig. 4-7-4:
The corresponding relationship between the pitch error compensation amount and the
compensation number is shown in the Table. 4-7-1:
Table 4-7-1
Compensation
number
0 1 2 3 4 5 6 7 8 9 10
Compensation
amount 0 +9 -3 +8 -4 -5 -8 +6 -6 +1 -7
The error inspection can be performed after the distance between the least value and the most
value of the machine worktable movement stroke is divided into N sections; the pitch error of each
interval is fixed, regardless of the control of the worktable movement direction. For example, Fig.
4-7-4 shows that the error value in the N1 area should be input to the corresponding compensation
series number “1” for the system, in this case, the system then can be correctly called the pitch error
compensation value in the N1 area. The error value of N6 area in the Fig. 4-7-4 inputs to the
corresponding position of compensation series number “6”, in this way, the system can be correctly
called the pitch error compensation value in the N6 area. Therefore, its relationships that the pitch
error value in each area is corresponding to the end position of its area along with positive
movement.
z
The example set by the pitch error compensation
The example of the linear axis pitch error compensation, X axis is regarded as an example, the
setting method of other axes are identical.
A.
Zero return along with positive direction, the error compensation is performed the inspection
based upon that the mechanical zero regards as reference point.
It is supposed that the actual situation is: the pitch error compensation interval is 10mm, the
stroke along with X axis is 100mm, and then the point number of compensation is 11, the
compensation number of the reference point is 10, the relative data parameter setting is shown in the
table 4-7-2:
