Re: [CAD_CAM_EDM_DRO] Re: Lathe controller about micrtokinetics

From: Darrell
To: CAD_CAM_EDM_DRO@egroups.com
Sent: Tuesday, July 04, 2000 12:58 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Lathe controller about mictokinetics



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DEAR DARELL

I AM SORRY THIS WAS MEANT FOR JOHN <john@...>

AS YOU MENTIONED IN YOUR MAIL YOU PLAN TO USE ENCODERS AND SERVO'S

THE CARD YOU MENTIONED HAS AN 8254 [PGM TIMER]

I TRIED USING THE CARD WITH STEPPERS THE CARD SEEMS TO WORK OKAY
THE MINUTE YOU USE A SERVO SYSTEM AND TRY TO THREAD THE CARD GIVES UP. AT AROUND 1100RPM OF THE SPINDLE WITH A 1000PPR ENCODER [WHICH IS NOT TOO MUCH OF RPM OR PPR CONSIDERING FEEDS AND SPEEDS USED TODAY]INSTEAD OF PRODUCING A DECENT STEP SIGNAL WHICH WOULD BE USED BY YOU FOR A STEPPER OR SERVO THE OUTPUT WAS GARBAGE WHEN LOOKING AT IT ON A SCOPE.

AS THE SERVO/STEPPER SYSTEM SEE'S NO STEP PULSESYOU CAN CREATE ENDLESS SCRAP AND BREAK EXPENSIVE THREADING TIPS/HOLDERS.

FURTHER THE COMPANY DOES NOT HELP OR ASSIST

I PLAN TO RESEND THIS EMAIL NOW THAT I HAVE FOUND IT FOR YOU. OPP'S THE MILLENIUM HAS CHANGED !


REGARDS


BYRON

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copy of email dt.19\12\98

SENT TO MICROKINETICS NO REPLY TO DATE. THERE WERE PREVIOUS FAXES TO THEM NO REPLY


WE HAVE PURCHASED 2 OPTIPLUS CARDS FROM YOU IN THE PAST AND FACE THE
FOLLOWING
PROBLEMS


1.]THE DRIVERS SUPPLIED BY YOU FOR USE WITH TURBO C++ CANNOT BE COMPILED
USING LARGE OR HUGE MEMORY MODEL AS THEY WERE COMPILED UNDER SMALL OR
MEDIUM. ARE YOU IN A POSITION TO SUPPLY THE CORRECTED DRIVERS AS WE HAVE
FURTHER REQUIREMENTS

2.]ON THREADING THE ENCODER INPUT FREQUENCY ACCEPTABLE BY THE CARD IS VERY
LOW. ie.1000PPR ENCODER CANNOT TRACK THE SPINDLE CORRECTLY AT 1000RPM. IS
THERE A SOLUTION TO THIS AS WE CANNOT THREAD AT 1500RPM WHICH IS OUR
REQUIREMENT

3.]YOUR MILL MASTER PRO DOES NOT INCORPORATE TOOL OFFSET G40 G41 DO THE
NEWER VERSIONS HANDLE THIS ?

MERRY X'MAS TO YOU

REGARDS BYRON

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