Mitsubishi Electric M700V Series Manual page 70

MITSUBISHI CNC
III Functional Specifications
4.5.8 High-speed Synchronous Tapping (OMR-DD)
M720VW
M system ○
L system ○
The servo axis directly detects and compensates of the spindle's delay in tracking by using the
communication between drive unit over the high-speed optical servo network. By minimizing the
synchronization error, the accuracy of the synchronous tapping is increased.
4000
(a)
3000
2000
1000
0
(b)
−1000
−2000
−3000
−4000
0 0.5 1 1.5
Conventional (without OMR-DD control)
(a) Spindle rotation speed
(b) Synchronization error
III - 68
M730VW M750VW
○ ○
○ ○
Implement to
increase the
accuracy of
the synchronous
tapping
2 2.5 3 3.5
(sec)
M720VS M730VS M750VS
○ ○
○ ○
4000
(a)
3000
2000
1000
0
(b)
−1000
−2000
−3000
−4000
0 0.5 1
MDS-D/DH Series (with DMR-DD control)
(a) Spindle rotation speed
(b) Synchronization error
○
○
1.5 2 2.5 3 3.5
(sec)