hexagon logo

Questions Regarding a 45° Fixed Probe

Hello!
Running PC-DMIS 2013 MR1 SP5 With a TP200 Tactile/Vision System
--------------------------------------------
So I've got this probe here; a 45° on a knuckle (I believe is the term)
It does not rotate, it's fixed at 45°.

Well... I recently had a crash and destroyed the TP200 module ($$$) which has been replaced. [If that's correct; the piece with the red light!]
This module is, as you can imagine, clocked slightly differently than the last one (I had to reload all of my probes into the probe changer manual/DCC or they would not seat correctly)
Which was easy.


Well now I've got this probe! It's swayed!

With the old module, the 45° probe was **** near (if not) perfectly in line with Y- (So it faces 45° between Z- and Y-)
With the new module, it's tilted 45° towards X- (So now it's 45° between Z- and Y-, AND 45° between Y- and X-!)

I'm curious on if that matters.

Ideally I'd just unscrew it a little, make the adjustment, lock it back in and calibrate.

I'd like to know how precisely I need to have it aligned, I guess? I think the fixed 45° won't change, because of the knuckle, I just need to change its X rotation.
----
Will "eyeballing" (e.g. not using an indicator) to "level" the probe to Y- be fine? As in there will be negligable uncertainty from doing so, or should I call Hex-a-Tech?
-----

Hmm... All looks like word soup to me. Hopefully you guys understand what I'm looking for. Per my understanding (of star probes) it doesn't matter a whole lot (as long as it's not like crazy tilted), but I don't use this probe (literally ever except today, though I'd like to use it more) and I want to make sure my setup is correct.

We're due for calibration pretty soon, so someone'll be out here I can defer all my questions to, eventually
Hoping y'all have some advice
Parents
  • Eyeballing is usually fine.

    What you need to worry about is will the probe shank when checking your part.

    If the ball is close to the same diameter as the shank it COULD shank on the sphere if your eyeball is not so good, but with most probes this isn't likely. More likely you'll stick the probe in a hole too deep for your eyeball error and shank on the part.

    Pull the knuckle off the extension/module.

    Bring the extension/module down to a 1-2-3 block or the plate.

    Lock off X travel on the jog box.

    Make a mark with a sharpie on the block/table.

    Move in ONLY X one way or the other.

    Make another mark.

    Connect the marks with a scale so you have a line.

    Move the head up but keep Y locked.

    Put the knuckle on the extension/probe.

    Rotate the ruby so it is on top of the line, remember keep Y locked, you can move X and Z for this.

    Tighten the knuckle.

    This will be extremely close to correct and minimize your chance of shanking.

    This is also what you do with a star, putting the tip that is straight down in one of the holes on the 1-2-3 block.
Reply
  • Eyeballing is usually fine.

    What you need to worry about is will the probe shank when checking your part.

    If the ball is close to the same diameter as the shank it COULD shank on the sphere if your eyeball is not so good, but with most probes this isn't likely. More likely you'll stick the probe in a hole too deep for your eyeball error and shank on the part.

    Pull the knuckle off the extension/module.

    Bring the extension/module down to a 1-2-3 block or the plate.

    Lock off X travel on the jog box.

    Make a mark with a sharpie on the block/table.

    Move in ONLY X one way or the other.

    Make another mark.

    Connect the marks with a scale so you have a line.

    Move the head up but keep Y locked.

    Put the knuckle on the extension/probe.

    Rotate the ruby so it is on top of the line, remember keep Y locked, you can move X and Z for this.

    Tighten the knuckle.

    This will be extremely close to correct and minimize your chance of shanking.

    This is also what you do with a star, putting the tip that is straight down in one of the holes on the 1-2-3 block.
Children