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Touch Trigger probes on a scanning head

JTM@AlloyP
Hello all,

I am a new programmer who is helping build up my companies probe stock.

We have an old touch trigger CMM that uses 2m threads and we have just bought a new 7,10,7 with a scanning head which uses a 3m thread.

Looking through Hexagons catalog I noticed they have touch trigger probes and scanning probes separated yet there are touch trigger probe styles that would work with our 3m probe clamp apparatus for the new CMM

Is it possible to use touch trigger probes with the scanning head (HP-S-X1H) or should I just stick to looking at the scanning probe section of the catalog.

There seems to be more styles of touch trigger probes then scanning probes and I am just curious if it will work or negatively effect accuracy if we built a scanning tip with a touch trigger style probe.

Thank you,
  • You can get 3mm to 2 mm adapters. I'm pretty sure that you can also get pucks with a 2mm thread.
  • You can scan with rubies.

    I just bought a bunch of 3mm to 2mm adapters and buy the same probes for both machines, unless I have something special.
  • I am currently running both TTP and analogs with the same scanning head as you. Hexagon had to come in to install an extra wire for the TTP to work and they also provided me with a HA-TM-31 attachment so I could build TTP setups on the HP-S-X1H. We had to resort to using TTP here because of vibrations coming from a nearby press messing with our analog system. Hopefully this helps you.
  • I only use M2 threaded probes, since I had a ton of them when I got my first M3 machine.

    I now have an equal number of M3 machines as M2, but I still have all M2, so I'm staying M2.

    You can scan hard materials (titanium, steel) with ruby just fine. Aluminum and softer will stick to the ruby as it scans making a bulge or ring around the tip. Light application of gray scotchbrite and a lint free rag can extend that, but you have to requalify a lot. So go with Silicon Nitride.

    You can do touch probing with silicon nitride just fine.

    You can get diamond for things like cast iron. You can take touch hits and scan.

    Just because it says "scanning" or "touch trigger" doesn't mean you have to do that with it. That scanning probe you have takes touch triggers. I do it all the time. There is precious little difference between measurements with touch trigger versus scanning.
    Scanning can be faster.
    Scanning gets more data, so it can be slower.

    Don't think that you have a scanning probe so you must scan 100% of the time. Do what makes sense for the part and what you are inspecting on the part.

    I've never used an M3 threaded stylus other than my master probe on a Zeiss and my new Hexagon machines. So I've never measured a part with one.

    I have measured parts with three different probes in three different softwares and achieved the same results, shipping to a customer who has also achieved the same results on their end, so using M2 threaded styli and taking touch hits hasn't produced a discernible issue.

    Worry about your alignments, the stylus choice should not be an issue.
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