Spindle-Mode Rotary Axis Control; Outline; Glossary - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
13 Spindle Control

13.7 Spindle-Mode Rotary Axis Control

13.7 Spindle-Mode Rotary Axis Control

13.7.1 Outline

This function enables a rotary axis driven by a servo motor to be controlled as a spindle. When the spindle-mode rotary axis
control command signal is turned ON, the rotary axis is controlled as a spindle. This enables lathe-turning machining,
including synchronous feed and thread cutting, to be performed in synchronization with the feedback speed of the rotary axis
(spindle-mode rotary axis mode). When the signal is turned OFF, positioning and interpolation commands can be given to the
rotary axis (servo axis mode). This function cannot be used in the absolute position detection system.
The following is the example of the application.
Add S2 as B axis spindle. B axis can be controlled as S2 spindle by setting "2" to B axis parameter "#1020 sp_ax" and setting
the same value as the B axis (servo axis) drive unit I/F number to S2 axis parameter "#3031 smcp_no". B axis can be
controlled as S2 spindle by turning the spindle-mode rotary axis control command signal ON after being used as B axis for
indexing the machining surface. This enables turning machining, including thread cutting.
Milling machining
(Spindle-mode rotary axis control command signal OFF)
Z
B(S2)
B axis (rotary axis) is used for
indexing the machining surface, etc.

13.7.2 Glossary

Terms used in this chapter have the following meanings.
Term
Spindle-mode rotary axis mode
Servo axis mode
IB-1501668-B
Y
X
Spindle
S1
Servo motor
A state where the spindle-mode rotary axis control command signal (ROTSPCn) is ON and so a
rotary axis is able to be controlled as a spindle.
A state where the spindle-mode rotary axis control command signal (ROTSPCn) is OFF and so a
rotary axis is controlled as a normal servo axis.
502
Turning machining
(Spindle-mode rotary axis control command signal ON)
Z
S2(B)
B axis (rotary axis) is controlled as a
spindle (S2). This enables turning
machining.
Meanings
Y
Thread cutting