On Wed, 2008-06-25 at 16:15 -0500, Andre' Blanchard wrote:
> At 02:21 PM 6/25/2008, you wrote:
... snip
> >TxM6 loads the tool, only.
> >
> >G43Hx sets the offsets, only.
> >
> >The tool status line simply tells you which tool is loaded, not which
> >offsets are in effect.

But it gives the impression that it does, by displaying an offset and
diameter from the tool table line associated with the selected tool.

>   EMC does not force you to use the same 'x' in
> >TxM6 and G43Hx.

That is what I am counting on for having multiple real tools at one Tx
or slot.

> >Regards,
> >
> >John Kasunich
> 
> I think the confusion comes from having a tool/pocket number in the tool 
> offset table.
> Most machines I know that have twin arm tool changers, also known as random 
> tool changers because the tools migrate from pocket to pocket, have a table 
> to track which tool is in which pocket, and a separate and unrelated table 
> with the tool offset information.  The tool offset information is not in 
> any way connected with a tool number but just with and offset number, so 
> any offset can be used with any tool and a tool change just puts tool 
> number X in the spindle and does not tell the control anything about that 
> tool.
> 
> Machines that do not have random tool changers do not need the table to 
> keep track of where to find tool number X so the tool and pocket number are 
> always the same.
> 
> I have not really formed an opinion about the way EMC has it setup.  First 
> impression is I do not like it because it is different and has no 
> addvantage (that jumps out at me) over what I am used to, but I have not 
> used it enough to have any real problems with it.
> __________
> Andre' B.  Clear Lake, Wi.

If I recall correctly the Fadal I ran had a separate table for T and H.

-- 
Kirk Wallace (California, USA
http://www.wallacecompany.com/machine_shop/ 
Hardinge HNC/EMC CNC lathe,
Bridgeport mill conversion, doing XY now,
Zubal lathe conversion pending
Craftsman AA 109 restoration
Shizuoka ST-N/EMC CNC)


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