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Don't waste your time messing about with it, they are a nightmare to set, and they really only should be used as an edge finder!
I recently purchased a "3D-Taster" that requires calibration before use. The paper that describes the calibration does not make a lot of sense and skips some of the steps. Does anyone here know how to calibrate the taster properly, I does x y and z . It has pretty good repeatability, its in a Tormac spinal and I'm using a second indicator as suggested. When calibrated, zero on the dial is in alignment with the center of the spinal from 4 directions.
help is appreciated.
hibo
Don't waste your time messing about with it, they are a nightmare to set, and they really only should be used as an edge finder!
This is kind of an old thread (the OP probably has his answer by now) but I'm curious why you say that they're not worth the trouble? I have an SPI mechanical 3D taster and a Fowler digital. Despite having Renishaw probing on my Haas, I still find the 3D taster to be very useful for large setups.
Example: I had a long part in the machine, held by two different model Kurt vises. I used the 3D taster first to tram vise #1 into square. After that, I was able to use that 'zero' point to sweep the second vise into the same matching plane on the other side of the table. Yeah, I could do that with any old test indicator but it also works in Z.
Once my Y plane was established, I used the same taster to pick up the Z plane from one vise and carry it to the second vise. That helped to determine how much the parallels had to be shimmed to establish the same plane.
I'm still curious about the calibration though. I bought the Fowler digital used on eBay and without instructions. Being digital, it has to be zero'd. The only downside I see to them is that they need to be adjusted every time if the collet or tool holder isn't perfectly true.
Sorry my comments are based on users asking my sales staff to get them either repaired or calibrated. As I use to work for two major European tooling companies (both around a $500 million turnover) who carried out the calibration/repair of length measurement tooling for their customers, and in both cases the labs technician asked me to avoid taking any orders, has they were so difficult to setup/calibrate.
OK, if you mean "Calibrate" as in, "certification", I understand. There are enough things about them that if somebody wants to use them as a measuring device, they're using the wrong tool.
Some environments force that all measurement tools have certification stickers and I can see where doing that to a tool like this would be difficult.
They say the American and the English are divided by a common language, and you are quite right, I am talking about certification has we would call it in the UK, hence my comments about using them as edge finders for tool off-sets, and not as you rightly point out "as a measuring tool"
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