Tool length. Heidenhain TNC 2500B
Per a previous question I downloaded the manual for this machine(Bridgeport VMC 1000 Heidenhain TNC 2500B control) hoping to learn more about it.
The section on tool length says that in the tool file tool zero always has a zero length and a zero diameter.
Then it goes on to say that for setting tool length you call up the zero tool , touch off on the top of the part and zero out the datum. All other tool lengths are supposed to be relative to the zero tool.
My question is what is the zero tool? Can I pick any tool and call it the zero tool?
If I get a tool setter would my "Z" zero surface be the face of the tool spindle as it usually is on LeBlonde Makinos.
Can I use the spindle face to set the "Z" datum on the part and make all my tool lengths relative to it?
ANy tool can be zero, all tools could be zero length. I used tool 1, arbritrarily setting it to zero length, and all other tools are a length relative to it, I subtract X from every new tool I measure and that is the new tools length in the tool table. A process[not necessarily the right one but A process]:
All tool table lengths are set to zero for right now.
Tool in pocket number one in the spindle, set the length in the tool table to zero, touch it off on your part, set the machine Z to zero [0.0000]
Tool in pocket number 2, in the spindle, touch it off on the part, the machine will show an offset of something like 1.4564, that is your tool length for tool 2. Do NOT zero the machine, enter the number 1.4564 into the tool table for tool 2.
Repeat for all the tools you have.
The machine will now show zero whenever any of the tools are at the part surface.
When you machine a new part with the same tools, all you need do is touch any of the tools to the part and zero the machine and they will all be set.
Thanks for clearing that up. The manual does not describe the process in detail.