Re: [CAD_CAM_EDM_DRO] Re: CNC Woe's

In a message dated 9/28/2006 4:11:14 P.M. Eastern Daylight Time,
afogassa@... writes:

> I have a microkinetics CNC lathe and am having a calibration

problems.

> Every time I do an inside Dia cut operation my (X) looses its

position.

> Now the setup is tight and not moving and the motors shafts

appears to

> be nice and tight where conected to the motor. The (X) moves nice

and

> smooth but my ID keeps going up for example 15.00mm to 15.02mm

every

> operation it performs. That adds up quickly. Can anyone aim me in

the

> right direction. The last time I talked to the manufacture they

focused

> on my G code for the loss in calibration. Since I am using mostly

G01

> commands I hardly think this is the problem but I could be wrong.

If

> anyone could help I would appreciate your comments or PM.
>
>
> Harry Siebert

Harry:

I haven't worked with the Microkinetics equipment much except to use some of
their steppers and drivers to replace other steppers and drivers on the
equipment I service. However, I would think there are machine parameters that
need to be set in the controller. Some of these machine parameters could be
settings for: inertia, backlash, correction factor. You may not have all of
these but I would think that you would have at least backlash and probably
inertia settings. These parameters, if incorrect, will cause the problem you are
indicating. Also, what was suggested by another person on the group
regarding the way the driver is set up, could also be causing that. However, I would
think Microkinetics would have taken that into account when they fabricated
the lathe, especially since that is not the first one they have built.

I hope this helps some.


Randy Abernathy
4626 Old Stilesboro Road NW
Phone / Fax: 770-974-5295
Acworth, GA 30101-4066
E-mail: cnc002@...

I furnish technical support, repair, and other related services for your
industrial woodworking machinery. My background as Senior Service Engineer for
the SCMI Group for nearly fifteen years with factory training, combines with
my extensive background in electronics, mechanics, pneumatics, electrical and
CNC machinery to offer you needed support for your machinery. Services
include but are not limited to the following:


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