View Full Version : VM-40 twitchy spindle


CNC-Hammer
10-06-2009, 08:19 AM
VM-40 circa 1987 has a twitchy spindle just after a tool change or spindle orientation command.

Can anyone suggest a reason for this?

jaherrera3499
10-11-2009, 11:20 PM
What type of control is on it? Usually, it is a pre-amp that is going out, if Fanuc controls. There is a black box on the top of the spindle. It goes to the spindle sensor.

CNC-Hammer
10-12-2009, 08:41 AM
Control is a Seicos Mk 2.

The spindle twitches mainly after a long period of inaction. Can you elaborate further on the pre-amp?

nakatome
10-12-2009, 11:35 AM
hi cnc hammer is spindle gearhead or cartridge type , check motor coupling incert maybe bad