Set probe TLO

[StuartH]

Dave
More questions for you but I bet I have missed it

For this question let me set up the system
No touch plate installed
PLO measured and entered into the tool table as is the dia of the probe tip

Probe working as per your test routines as set out in your fine manual

My problem
I get to the point were you say enter the TLO ?

I assume ( I do know the break down of those letters , therefore I do not ) that with the gauge block DRO set to 0 .
Do I then click Set G-Blk TLO button ? With the probe in its just activated position in

Or how should I get the figure and were do I put it ( that did not sound to good )
After that as per the MT set the probe as a RH

The reason is that the TP is not in use at this time is that I have to get the interface made up , and I prefer to set things up in a simple manner then I know what is causing the problems ( comes from many years as a facilities engineer for a large UK Bank main computer centre )

Regards Stuart

[DaveCVI]

Hi,

Dave
More questions for you but I bet I have missed it

For this question let me set up the system
No touch plate installed
PLO measured and entered into the tool table as is the dia of the probe tip

Probe working as per your test routines as set out in your fine manual

My problem
I get to the point were you say enter the TLO ?

could you point me to the manual section you are referring to here?

I assume ( I do know the break down of those letters , therefore I do not )...

TLO is short for Tool Length Offset
The term is used to explicitly draw the distinction between the Physical Tool Length (PTL) and the tool length offest (TLO) value that mach uses in it's calculation to concert from (desired) Work coordinates to (Physical) Machine Coordinates when figuring where to put the spindle in Z.
TLO basic info is in section 5.2 of the user manual.
MT mode and TLO info is in section 9 of the manual. It's good to understand 5.2 before jumping to MT use in section 9.

...that with the gauge block DRO set to 0 .
Do I then click Set G-Blk TLO button ? With the probe in its just activated position in

Or how should I get the figure and were do I put it ( that did not sound to good )
After that as per the MT set the probe as a RH

If you want the PTL of the probe, then you need to measure that at the point where the probe just triggers (which is a tad shorter than the at rest length of the probe).

I think that you are wondering how to get the TLO value for the Master Tool (MT) when the probe is being used as the MT.
(If I'm guessing wrong, please correct me).

I'm going to touch on two topics here as when using MT mode they are related.
1) PTL of MT
2) TLO of MT

When using MT mode, all TLO values for all tools are defined to be the difference between the PTL of the MT and the PTL of another tool.
Thus it is important that the tool table have the PTL values for the tools - otherwise the calculated TLO value will not be correct.

However, if you are asking how to get the TLO value for the MT itself, that value will always be 0. This is because for the MT
TLO = difference between PTL of the master tool and the PTL of the master tool.... and that difference is always 0 (X-X=0)

BUT.... you still need to have the PTL value for the MT in the tool table so that the calculation will be correct for other (non-MT) tools.

However, you are also asking about using a gage block, so I am thinking that you may be using the TLO technique where you touch all tools to a common Z surface and set the TLO values from that reference. But when using that technique, you are generally not using MT mode you are setting the TLO value directly (again see section 5.2 in the manual).
Thus I'm not sure I understand what you are trying to do yet, so I'm uncertain how to explain better.

I think I can make a better answer once I know more about what you want to do.

Dave

[StuartH]

Dave

the section i was referring to is 8.11.13 first parra

my eng background strikes again assume ( it makes a ASS out of U and ME


yes i can measure the probe lenght off line

it was the above reference in the manual that has me confused

but while i thought about it does the probe need a TLO and it is not a tool in this sense only a measuring device

it will not be used as a MT only a probe

I have the master tool sorted and the TLO TP sett up and its fine does what it say son the tin
i have temporary disconected the TLO TP to avoid conflict while i sort out the probe
sorry to put some fog in the channel

Stuart

quick edit as the boss informed me we have a small flood under control now

[DaveCVI]

hi,

it will not be used as a MT only a probe

OK, I think I'm tracking with you now....
- Probe as probe tool, but not as master tool
- Touching tools to a common surface to create TLO values for the tools.

When doing this you want to jog the probe to the surface and sneak up un the trigger point of the probe so that the probe is just triggered. Then click the "Set G-Blk TLO" button. that button sets the TLO value for the current tool # from the current position of the spindle - thus the desire to have the probe neither un-triggered, nor triggered but lower than the trigger point position.
The button also will compensate for the height of the gage block used (set on the settings common page). If no gage block is used, set the height to 0.

[quote="StuartH"...
but while i thought about it does the probe need a TLO and it is not a tool in this sense only a measuring device
[/quote]
You do want the TLO value for the probe.
the TLO value (for this technique) is:
"TLO equals the distance the tool has to move from WC Z0 to place the Tool tip at Part Z0."
(section 5.2.4.1 of the manual)

If you do not have the TLO value applied when using the probe to probe in Z, the machine will think that the probe is a different length than it actually is - and it will throw off the setting of WCZ0 when probing to a Z surface.

Dave

[StuartH]

Thank you Dave thats the info i required to put the final piece in this jigsaw

as you have said before its difficult to get over what the brain ( the one between my tabs ) and what my fingers type ( i am dyslexic and it is a bit difficult some time reading is ok but writing is hard did not help getting the cane every week for bad spelling )


again thank you for your patience in getting the info to me


regards Stuart