Topics

1

General Mach Discussion / Changing old laptop to new, axis jumping

« on: February 10, 2015, 11:08:18 AM »

I've recently tried to upgrade from an old toshiba laptop running mach3 on an old mill to a newer dell type and have found with the same settings that the 3 axis are jumping and running rough, could it be that the digital drives need to be retuned, if I reconect the old laptop it runs smooth again.
didn't want to go messing with the drive settings as with the old laptop it runs well.
Old laptop is giving trouble, sometimes wont start and a bit hangy.
I've tried to measure the voltage on the printer port and both seem about 4vdc.

2

General Mach Discussion / Beaver nc 5 atc

« on: June 13, 2011, 09:35:54 AM »

Hy all

I recently came by a run down nc5 which I've decided to convert to mach 3.
Specs are, x,y,z axis use anilam 140vdc brushed servos with 3nm constant stall.
z used anilam rotary encoder for position, x and y use linear scales, all 3 use tachs.

The mill has a 30 tool atc which is arranged as a ring around the column.

My main issue is with the spindle, it has a 4kw 3phase motor.
This drives an idler shaft via a wide timing belt which in turn drives the spindle through 1 of 2 seperate timing belts.
I can see one clutch which I am assuming is electric and I assume there's another on the spindle to select between belt 1 and 2.
I can see no other mechanical means to alter the spindle speed so I again assume that a vfd or the like was used to give different speeds.

I intend to strip the head as the z axis won't move up and down.
I intend to remove the tool changer as I have no need for one.
I intend to use the original motors, ballscrews and nuts, power supply and anything else that can be found to be operational.

The mill has 4 servo amps so I hope to replace these with 4 viper200 drives to give me the chance to add a 4th axis.


I will incorporate us digital encoders 1000liine.

If anyone has any info on this type of mill I would be very greatful .

rgds gov.