TTS Tooling system

[Neale]

Thanks - I don't use R8 collets in my machine and I assumed that the collet finished proud of the spindle end. If it disappears slightly into the spindle, I can see how these toolholders work - I had a quick look at the Tormach data sheet on the TTS and they appear to sell a custom collet for the purpose. Makes sense now!

[m_c]

With regards to locating, one key thing to understand, is R8 is a collet system, not a spindle tool holding system.

The only reason R8 ended up being used for spindle tooling, is cheapness. It was far cheaper to equip a Bridgeport with a set of R8 collets, than a set of repeatable tool holders.

[Davek0974]

Fully agree m_c, I keep looking for a 30taper spindle but never seen one listed.

I did a test yesterday, last week i made the motor mount plate for my knee conversion, some fool made the bolt slots too small ;) yesterday i threw it back in the vise, set my axes zeroes with the Haimer probe and found the Z axis DRO in Mach3 was only off by 0.013mm or about 0.0005" - at least that proves the probe R8 taper is repeatable.

Maybe my issues are that my tool height setter uses a mock R8 socket that i turned up on the lathe - if the holders do not contact exactly the same area on this socket as they do in the spindle then I would see a height variation - this may be my issue.

I think a relocation of 0.013mm is amazing for an old Bridgeport and totally acceptable. I need to run the same test on all tool holders when i get a chance before i order anything i think.

[battwell]

thought of fitting a tool length probe? the probes i use repeat at 0.005mm max error on my cnc

[Davek0974]

thought of fitting a tool length probe? the probes i use repeat at 0.005mm max error on my cnc

There is a bug with CSMIO setups that prevent tool probing while in the M6 tool change loop, seems CS Labs have no intention of fixing it.

I like the Haimer probe :)

[Davek0974]

Did some assessment on repeatability, found two results...

Took a few random tools, zeroed the Z axis with my Haimer probe and then swapped tools, going to G1 Z0 F100...
T1 0mm
T3 +0.06mm
T8 +0.09mm
T10 +0.08mm

Now, before i dig any further, do those figures seem reasonable for a Bridgeport conversion??
No point looking for issues that are OK or can't be fixed.

Second result - with the Haimer probe fitted, if i repeatedly approach Z0 at F100 I get perfect result of zero every time. If I increase speed to F200 I get an error of +0.03mm, going to F300 or above I get an error of +0.04mm every time.

My thoughts are a following error in the servo setup maybe, overshooting and not correcting possibly?

[battwell]

if your on facebook- these are the probes i use and sell in the uk
https://www.facebook.com/groups/cncm...c_location=ufi

[Neale]

There is a bug with CSMIO setups that prevent tool probing while in the M6 tool change loop, seems CS Labs have no intention of fixing it.

Dave - I had that problem with an IP/M but was able to fix it by using a slightly earlier version of Mach3. Not sure which CSMIO box you are using but have you tried that? Sorry if you've already been down that path! It's solid for me me, though, both for initial setting and using the fixed touchplate for second-operation resetting.

[Davek0974]

IIRC i am on 062 - gave up messing some time back as i needed to use it, I might revisit this when i get to setting up my powered knee axis.