BluishInventor
Aluminum
- Joined
- Jul 7, 2020
I was curious as to how your shop operates with regards to programming at center path or with diameter comp. Do you comp diameter at the machine or do you only comp for wear?
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Sometimes it is nice to program to the part print numbers and use the comp.
Bob
OK, so I'll be the asshole again and ask: When is it NOT nice to program the print numbers?
Can someone PLEASE give me an answer when is it preferable to have wear, and WHY!!!
If you are doing a lot of parts, all those extra moves add up.Can someone PLEASE give me an answer when is it preferable to have wear, and WHY!!!
Biggest reason is leads. Lots more, like the one I mentioned above.
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I think that the world of leadins and outs and the confusing or frustrating errors sometimes encountered are one reason many hate using full tool comps.
That move is sort of weird as the comp comes on depending on where you are to the tangent point of the first line or arc.
With newer controls or CAM is also the feedrate at tool OD vs tool center-line when doing arcs or circles. Some stuff wants to know actual tool dia to correct and some ignores it.
If you lie to the machine about tool size no matter how good or smart the fancy control it can not help you.
Bob
I guess we each have our own private little crusades Mine is the metric system, at least yours has a chance of winning ...Why not just put in the actual dia in the offset page, put in the small deviation ( plus or minus ) into the wear offset and let the machine have at it?
Exactly!
So you want CAM to figure out the compensation, and yet you want the machine do the SFM/IPR calculations?
To achieve that, you put in 0 for tool dia and something for wear.
But now you have to tell the machine what size the tool actually is in order for it to calculate the RPM and IPM based on your programmed SFM/IPR.
To achieve that, you now have to enter the actual diameter into the control somewhere else .....
Why not just put in the actual dia in the offset page, put in the small deviation ( plus or minus ) into the wear offset and let the machine have at it?
Clueless on ridiculous here. Unsure why roughing not the same..... So your roughing passes will not have this adjusted feedrate, unless you are comping all those too, which would be ridiculous.....
Clueless on ridiculous here. Unsure why roughing not the same.
Life was so much simpler in the days of paper tape and none of this confusing correction and compensation computer stuff.
Bob
I think the divide here is the old way of relying on the control vs the new way of relying on CAM. Most at this point have switched to using and relying on CAM.
Sidenote: Wonder who is the 1 person using NEITHER!!!
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