Re: [CAD_CAM_EDM_DRO] Finding Z zero for CNC

In a message dated 5/2/2004 8:44:40 PM Eastern Daylight Time,
sstephenssprint020@... writes:
I'm running CNC and I'd like to work as accurately as
possible. Figure I'll get all the methods people are using and figure out
which works best for me.
The best way to find an accurate zero is to do what several say and either
with the spindle running or not running, move the Z axis until the cutter JUST
touches the top of either the base table or a scrap piece of material of the
same thickness as that you are going to machine. Then you tell the Z to go down
say 0.1250" or even 0.0625" and make a test cut on the scrap material. Then
you measure the depth of the actual cut. You can then go into the machine
parameters of the controller and adjust the Z value so that when you tell it to
go into the material a certain amount, it goes into it that amount. If you are
not concerned with accuracy in the thousandths of an inch range then the
"touch and go" method some describe is good enough


Randy Abernathy
4626 Old Stilesboro Road NW
Acworth, GA 30101-4066
Phone / Fax: 770-974-5295
Mobile: 678-772-4113
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.


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