Re: [CAD_CAM_EDM_DRO] Re: Taig CNC mill .......and Emco

Hi Alan and list.
The point of changing the board was in each case to UPGRADE the software!
The earlier versions had all sorts of stupid limitations, eg G02 and G03
would only give a complete quadrant, not any part of a circular cut less
than 90deg. and a few others too. The new board is a direct sale - no
exchange.

The cross slide stepper is mounted on the front of the cross slide, and
drives the screw via a toothed timing belt. The longitudinal one is the
same. These machines do not have handwheels, only a push button jog
feature on both axes.

From memory it uses standard European stepper driver chips, and I think the
motion control is in software in the ROM.

Note I am talking about the self contained machine here - I believe they
did do a version which interfaced with a PC. Mine only has a standard
serial port to permit downloading programs into it, and even that uses a
non standard connector which is very hard to get hold of!

Jim Gregg
At 01:46 PM 2/20/01 -0800, you wrote:

>Jim,
>
>I just have the EMCO 5" lathe, no CNC on it yet ;>) By "whole board",
>do you mean the controller program? That's interesting. What
>processor? Any "custom" motion control chips? Sorry I don't have any
>schematics or documentation. Wow, for 1800, I'd suspect you could get
>stepper drivers (assuming steppers), controller software and a power
>supply! Might be a thought before the NEXT board replacement. By the
>way, did you have to send the old board back for exchange? For that
>much, I think I'd see if I could fix it!
>
>I WOULD be interested to see exactly how they mounted the cross slide
>stepper motor. The other one would be easy enough. DRO's are another
>thought. Encoders, a PIC, and a LCD.
>
>Alan KM6VV
>
>Alison & Jim Gregg wrote:
>>
>> Hi all.
>>
>> One of the scary things about the EMCO lathes (the CNC 5 ) is that all the
>> software is in ROM in the main board - and EMCO worked by replacing the
>> whole board for updates - at about $1800 a throw - I've done two.
>>
>> By the way I'm still trying to get hold of either copies or original
>> service manual for the CNC 5 with the electronics circuit diagrams. any
>> help out there please?
>>
>> Jim Gregg
>>
>> At 04:58 PM 2/19/01 -0800, you wrote:
>> >Chris,
>> >
>> >No clue on the FB100 mills. It the plugs are compatible, I'd suggest
>> >swapping motors, drivers, etc. BUT... if they are blowing the fets, not
>> >a good idea! 5 phase vextra motors? NEMA 23's? I know what I'D DO,
>> >goto to Camtronics and set them up for bipolar steppers and new
>> >drivers. And probably opt for CNCpro.
>> >
>> >The "damp environment" is a little scary, corrosion on connectors? rust
>> >on ways??
>> >
>> >Alan KM6VV
>> >P.S. What does an FB100 look like? Are they still available??
>> >
>>
>
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