Turret Gear Change Control; Outline - Mitsubishi Electric M800VW Series Programming Manual

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M800V/M80V Series PLC Programming Manual (2/2)

13 Spindle Control

13.8 Turret Gear Change Control

This function enables axes in the semi-closed system to select four types of gear ratios which are set to the spindle

specification parameters according to the control input from the PLC.

There are differences from normal gear change as follows:

 Positioning can be made at the predefined motor side position regardless of the selected gear step during spindle orienta-

tion or change to spindle position control (C axis control).

 Gears can be changed during the rotation.

 Example of application

[Gear change between turret swiveling and tool spindle rotation in turret type tool post]

For gear change on a turret where the turret swiveling and tool rotation are switched by physical gear using one servo or

spindle motor as illustrated below, the positioning to Z-phase position of motor side (orientation) can be made regardless of

the selected gear steps by using this function. Consequently, the gears for the physical gear change are engaged and the

physical gears can be changed.

[Gear change during rotation]

For example, the tool for polygon has a tool system in which the reduction gear is for starting torque (cutter + tool folder). If

this tool is installed in a tool post that has mechanism which rotates multiple tools by one motor, the gear change is needed

when selecting the polygon tool. However, the gear change can be performed during the tool rotation without temporary stop

so that the tool change time can be reduced.

[Gear change during spindle-mode servo motor control]

This function is used when gear change is needed in the spindle-mode servo motor control which controls a servo motor as

spindle using the combination of servo drive unit and servo motor.

Gear change mechanism

・ Turret swiveling

・ Tool spindle rotation

Spindle motor

IB-1501668-B

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