Re: [CAD_CAM_EDM_DRO] BACKLASH USING C++rs
Posted by
BYRON DAMANIA
on 2000-07-10 02:12:29 UTC
----- Original Message -----
From: mSperry
To: CAD_CAM_EDM_DRO@egroups.com
Sent: Sunday, July 09, 2000 8:38 AM
Subject: Re: [CAD_CAM_EDM_DRO] PIC-SERVO CNC controllers
The backlash is what bothered me. If you fix it I may go with it/mac
-----Original Message-----
From: andrew abken <kn6za@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Saturday, July 08, 2000 8:00 PM
Subject: Re: [CAD_CAM_EDM_DRO] PIC-SERVO CNC controllers
>
>Hi,
>
> I am currently using Pic servos on a three axis minimill, and I like the
>servo drives very much. I am driving them with step/dir control from EMC. I
>have used the example machine control program offered by jr-kerr, but being
>that it DOES NOT support backlash compensation found it to be unusable as a
>control program, but I am learning c++ just so that I can modify it as
>needed, it has lots of potential.
>
>Any questions? just ask.
>
>
> Andrew
> kn6za
IF YOU PLAN TO WRITE A PROGRAM IN C++ YOU SHALL HAVE TO BREAK ALL CIRCLES AND ARC'S INTO THEIR REQUISITE QUADRANTS. YOU SHALL HAVE TO ADD THE BACKLASH STEPS AT EVERY QUADRANT ONLINE.
WITH LINES ITS SIMPLE ADD THE EXTRA STEPS BEFORE ANY LINEAR MOVEMENT WITH DIRECTION CHANGE.
FURTHER YOU SHALL HAVE TO SAVE \ RECORD A FILE TO KEEP TRACK OF THE LAST BACKLASH DIRECTION ESPECIALLY IF YOU EXIT TO DOS AND RETURN TO THE CONTROL PROGRAM.
REGARDS
BYRON DAMANIA
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