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Set Screws on TTS Gauge Holders

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Nigel K09/04/2021 15:31:17
15 forum posts

I am looking for a TTS gauge holder and see that Tormach make one that might suit my purposes (10mm TTS Gauge Holder).

However, the shaft of the gauge is secured with a set screw. Wouldn't this be liable to create some small eccentricity between the axis of the collet and the axis of the gauge? (I was looking for a way to hold a Haimer 3D sensor.)

Nigel

Michael Gilligan09/04/2021 15:51:19
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18080 forum posts
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I would hope that the bore provides a very close sliding fit for the stem of the gauge, and the brass screw simply adds a little friction ... But in the real world, your misgivings seem reasonable.

MichaelG.

JasonB09/04/2021 16:00:55
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As quite a few Haimers have a flat for a sidelock I would have thought it just comes down to the accuracy of the TTS holder much like it doe sfor Weladen sidelock type cutters. If you want it more concentric then use an ER holder with a collet to the spec you want 2, 5 or 10 micron.

Nigel K09/04/2021 16:13:19
15 forum posts

Many thanks!

JasonB09/04/2021 18:56:21
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I did add TTS to the title in the hope that Andrew S may look in but in the mean time took a look at his photos and it looks like he uses one of the gauge holders you link to.

However it does look like you can adjust the Haimer once it is in the holder to get it concentric to the spindle

Edited By JasonB on 09/04/2021 19:00:27

Tony Pratt 109/04/2021 19:11:19
1544 forum posts
8 photos

Last Haimer I set up you adjusted the unit itself to remove any stylus 'run-out'.

Tony

Nigel K10/04/2021 09:14:42
15 forum posts

Thanks all,

And yes, you are quite right, I hadn't noticed the fact that one can adjust the Haimer itself.

Matt Harrington10/04/2021 09:38:37
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182 forum posts
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Interesting stuff. Can someone explain why you would use this device over something like a 3D CNC probe and say ProbeIt addon for MACH3? Trying to understand the differences.

Matt

Andrew Johnston10/04/2021 10:06:22
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Posted by Matt Harrington on 10/04/2021 09:38:37:

Can someone explain why you would use this device over something like a 3D CNC probe and say ProbeIt addon for MACH3?

Mine gets used more often on my manual mills than the CNC mill. I can't afford a Renishaw probe solely for the CNC mill, and even if I could, I wouldn't trust an addon for Mach3.

Andrew

JasonB10/04/2021 10:15:39
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You can use the non electronic one on your other manual machines and it also works on non conductive materials. I'm not sure what Pathpilot comes with in the way of probing software.

Andrew Johnston10/04/2021 16:46:17
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Posted by JasonB on 10/04/2021 10:15:39:
I'm not sure what Pathpilot comes with in the way of probing software.

Pathpilot has a fairly comprehensive set of probing utilities, but all reliant on an electronic probe. Can't see why I'd want to use a non-electronic probe? As far as I'm aware Renishaw probes work on conductive and non-conductive materials as does the Tormach active probe.

Andrew

Nigel K10/04/2021 16:56:49
15 forum posts

This was the method I had assumed I'd use - unless someone has other advice...

Andrew Johnston11/04/2021 12:12:35
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Seems pretty straight forward for X and Y. I understand how he measures Z, but not sure why he chose the Haimer to be tool 1, or how this interacts with the tool table. I'm old hat and use a master tool, labelled 0, to set a zero for measuring tools for the tool table, and to set the work zero in Z. Modern thinking tends to use the spindle nose as a reference, but that can be a PITA to see what's going on. And in some applicastions is too large to be able to set the work zero in Z.

Andrew

Ken Strauss15/04/2021 03:04:34
8 forum posts

The default on Tormach's PathPilot is for the spindle nose to be considered Tool 0 and all tool table offsets are relative to the nose. This has the nice bonus of being able to measure tool lengths with a surface plate and height gauge if you don't have an ETS. For what it is worth my Haimer is tool 98 since Tormach assumes that an electronic probe is tool 99 for their inbuilt probing routines.

A hint about your Haimer: the concentricity adjustment uses 4 setscrews which are M4 as I recall. These are somewhat delicate in the internal hex recess so I replace them with M4 SHCS which are much more robust. The original setscrews didn't have them but adding brass tips to the adjustment screws seems a good idea.

Nigel K15/04/2021 08:30:13
15 forum posts

Thanks - useful advice.

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