How to set tool touch off position

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Black Forest
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How to set tool touch off position

Post by Black Forest »

Now that I have a tool touch off sensor how or what do I do to get the table to move to a preset position so the spindle is over the tool touch off sensor? Is there something in the tool touch off auto measure that I have missed? Until now I have just jogged the table over.
suntravel
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Re: How to set tool touch off position

Post by suntravel »

You can use a macro.

For example, if the sensor is at X10 Y30 in machine coordinates

G49 ; cancels tool offset
G53 Z0 X10 Y30 ; moves rapid to Z0 and where the sensor is placed

You also can use G30 P2 and set up the position in the WCS Return

If you use the ProbeAPP:

https://centroidcncforum.com/viewtopic.php?f=60&t=4686

On my small mill I have no room for a permanent tool setter, so I plug it in only when in use and place it where it is room on the milling table.

Measuring larger tools like boring heads or fly cutters will not work to measure if the spindle is in the middle of the tool setter.

Uwe
CNCMaryland
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Re: How to set tool touch off position

Post by CNCMaryland »

Parm 17 is what tells the machine what Location you want to move to in order to get to the tool touch off.

I have mine set for G30 which is Option 2.

Check out the mill manual.

15.3.19 Parameter 17 { Detector Location Return Point
A non-zero value species the number of the reference return point (entered into the WCS menu) directly
above a permanently mounted TT-1 tool detector. When the Auto function is called up in the tool oset
library, the control will position the table to the return point specied by this parameter, and touch the
tool o the TT-1 Tool detector.
Entry Return Point
0 None
1 G28
2 G30
3 G30P3
4 G30P4
A zero indicates that the tool detector is no permanently mounted; automatic tool measurement will be
performed without X/Y axis movement.
ShawnM
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Re: How to set tool touch off position

Post by ShawnM »

In my tool change macro I also use G30 for my FIXED tool touch off location. Remember, its location is in MACHINE coordinates. G28 is my tool change position on the table to where the machine moves to so I can change the tool. After I change the tool I press cycle start and it automatically moves to G30 position and measures the new tool and goes back to work.
suntravel
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Re: How to set tool touch off position

Post by suntravel »

I think Black Forrest is a poor manual tool change guy like me :mrgreen:

I have 18 SK30 tool holders and measure them (only the ones with new tools) in a row before I start to program a new part.

That is why I do not need an automatic drive to tool change and measure macro.

Uwe
ShawnM
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Re: How to set tool touch off position

Post by ShawnM »

I'm also a poor, manual tool change kind-of guy with my current router. (I sold my Biesse Rover with ATC) I actually call it "semi-automatic tool change" as I use a movable AND a fixed tool height sensor. I use ae movable tool height sensor for the first tool on top of the material and then the machine automatically moves to the G30 location where my fixed tool touch off is to measure the offset before it starts cutting. Then at the second and subsequent tool changes the machine moves to G28 (a convenient location on the table to change tools) so I can manually change the tool and then when I press cycle start it moves to G30 to measure the offset of the new tool to reset Z0 before it starts cutting again.
suntravel
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Re: How to set tool touch off position

Post by suntravel »

And what are you doing with bigger ~ 2" face milling cutters if they can not be measured over the center of the tool setter ?

Uwe
ShawnM
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Re: How to set tool touch off position

Post by ShawnM »

If that question is for me, this machine is a router and I mostly cut aluminum sheet material (.060 to .375) so that type of tool would not be used. The only time I use my 2.5” Onsrud surfacing bit is to resurface the spoilboard. For any job that only uses 1 tool, like surfacing my spoilboard, the fixed tool touch off is not used. I have 2 PP, one for single tool jobs and one for multi-tool jobs.
Black Forest
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Re: How to set tool touch off position

Post by Black Forest »

suntravel wrote: Fri Nov 04, 2022 12:46 pm I think Black Forrest is a poor manual tool change guy like me :mrgreen:

I have 18 SK30 tool holders and measure them (only the ones with new tools) in a row before I start to program a new part.

That is why I do not need an automatic drive to tool change and measure macro.

Uwe
Definitely poor! I am CNC'd challenged but stubborn as a mule so I won't give up. Centroid should pay me to do this stuff so they could advertise " If Black Forest can do this it will be easy for you."
CNCMaryland
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Re: How to set tool touch off position

Post by CNCMaryland »

suntravel wrote: Fri Nov 04, 2022 3:33 pm And what are you doing with bigger ~ 2" face milling cutters if they can not be measured over the center of the tool setter ?

Uwe
Once the machine moves to the preset location, say G30, then you can manual job to the left or the right so that you can just catch a tooth of the 2" face mill.
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