josephk
Aluminum
- Joined
- May 16, 2018
- Location
- Hudson Valley NY
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Interesting. Some of this could be marketing. But the Big Plus tolerances are so tight, understandably, that it is hard to replicate. Big Daishawa does not divulge those tolerances to anybody except Big Kaiser and a few other licensed manufactures. I work for Doosan, all of our machines are Big Plus standard.
Paul
This video showed up today YouTube,
They had to test at least 25 holders and only 4 made contact, is this just a marketing video with import cheap holders or there is something to it?
Interesting. Some of this could be marketing. But the Big Plus tolerances are so tight, understandably, that it is hard to replicate. Big Daishawa does not divulge those tolerances to anybody except Big Kaiser and a few other licensed manufactures. I work for Doosan, all of our machines are Big Plus standard.
Paul
Hahaha,
I love it. Anyone that knows how to grind tapers or check for fit will know that is way too much prussian blue.
Does Doosan void the warranty if you use stanard V-flange holders? I have heard some MTB's are notorious for that........
I know the tolerances. If you are experienced in grinding those tolerances are not too tight. HSK is much tighter.
Hard to replicate? Just the opposite. Dual contact is based on a relationship of a known and measurable taper gage line to a flat shoulder. Anyone that has a little experience with geometry, trig, and datum points can figure this out and create reliable and repeatable measuring fixtures and proper CMM measuring procedures.
The whole idea of "licensing" a dimension is stupid. I can't believe actual machinists would fall for that crap.Ya I am one of those Un-Licensed manufacturers.
No, Doosan does not void the warranty if you use standard holders. But we do insist the the standard holders you do use are new or in very good condition for obvious reasons. I was doing an install/training on a 5 axis machine and I asked them what holders they were going to use. He pointed to a large crate near the machine that had about 200 old crappy holders with fretting and rust just piled on top of one another. I told the manager that we would not support the spindle warranty if he used those and trashed the spindle or complained about tool vibration. You spend 250K on a brand new 5 axis and cheap out on holders?
Paul
The whole idea of "licensing" a dimension is stupid. I can't believe actual machinists would fall for that crap.
The whole idea of "licensing" a dimension is stupid. I can't believe actual machinists would fall for that crap.
I'm more worried that MTB's will fall for it.
Hahaha,
Ya I am one of those Un-Licensed manufacturers. We reached out to them in 2013 for pricing and information on getting a license. They replied they would not entertain or sell us a license. I asked for a reason, they would not give one. Very nice how they flat out will not sell you a license and then make a video telling you to watch out for unlicensed manufacturers.
Here is the reason: part off the licencing is a minimum price for the holders, so they stay competitive..
Exactly. Looks like I was not part of the "club".
We're supposed to be machinists, double D's. If you can't hold that number to two tenths on a grinder, then get outta Dodge."Tolerance" not a single dimension so much eh ?
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