Re: [CAD_CAM_EDM_DRO] Re: G code software

A RAM drive is good for speeding up data access for CNC machining. Just copy all the necessary files for the job in the RAM drive.

However, you should set up the RAM drive in extended memory and install LOTS more RAM meemory. Several hunderd would be good...a gig would be even better!

Smoke


-----Original Message-----
From: Don <don18@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Saturday, October 28, 2000 3:24 PM
Subject: [CAD_CAM_EDM_DRO] Re: G code software


Alan Marconett KM6VV wrote:

>Don,
>
>I don't have any 5M files to run, just small stuff. I did manage to
>exceed 64K, so my simple "in memory" editor (part of my controller
>program) won't run. I hadn't heard of any requirement to run a "RAM
>disk" for MaxNC, is that only for BIG files? I understand it is
>faster. How do I get "look-ahead"? Is it mostly for tool
>compensation? Where did you get more information on MaxNC? I and I'm
>sure others would LOVE to hear it!
>
>Alan

Alan,
The RAM Drive is part of the MaxNC software install. Not sure if it is only
for the servo system (which is what I have) or for all their machines.
The "Look-ahead" feature is what you get when you "Load" a program
rather than use "DNC" mode. Another thing I always do is to use G64
"Constant contouring mode" to eliminate pausing to update the screen.
Yes, the "look-ahead" is for cutter comp, the machine needs to figure out
in advance where to stop and start the next cut.

I got my information just by playing around. I saw what the install program
added to my config.sys file and tried changing the amount of memory to see
what it would do. If you go too small on memory, the maximum program size
drops quickly. I have 96M ram so I tried to give it as much as possible
untill
I had strange errors (1/2 physical memory was about it).

Also, DON'T put the ram drive in upper memory. I tried it and had all kinds
of
problems with jogging and cutter comp errors.

Don

P.S. Anyone know of a good replacement motor with more torque?
Also, is there a way to convert their CHEAP AC/DC spindle motor
to a variable speed DC motor. I have several 1/2 hp Sherline motors
and would like to use one for the spindle drive as I need high torque not
RPM.
I cut mostly aluminum and stainless, sometimes titanium and other exotics.

Thanks.


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