Manual tool change with probe (without touch plate)

[orbscan]

Dear Dave,
I don't like the touch plate...

Can you help me with a script for the use of a probe (like the attachment)?

Like this:
http://www.youtube.com/watch?v=3z3MFaa4UaU

I have read the manual but I don't understand

Thank you
Best regards
Carlo

[DaveCVI]

Hi,
Please excuse the fact that I only speak English and therefore am not sure what the video is saying.

If your interest is for the device being used in the video to measure tools, then that type of device can be used with MSM also.
You would have to interface the device to your control electronics. and how you do that will depend on if the device provides an active low or active high outout (the same as any other device). All mach cares about (and therefore also all that MSM cares about) is that the input signal change when the device is triggered.

No changes to MSM code would be needed to use this device instead of a touch plate.

There are a couple of possible disadvantages for the device shown in the video:
1) You will not be able to measure any tool that has a diameter larger than the center portion of that device.
2) You will not be able to use that device to measure the length of a probe tool. In that case you would be trying to measure TLO for the probe with two spring loaded devices pushing against each other. That creates a situation where you can never tell which device causes the probe event. You will get variation in the measurement from this "two spring" setup and that variation will show up as cutting errors in the part.

If your interest is in what the software in the video is doing in response to the touch device, I can't comment about that since I don't understand the language in the video.
(It sounds like Italian to me - I wish I did speak Italian as 1/2 of my family comes from northern Italy).

Dave

[orbscan]

OK!
Thank you for your courtesy!

I will use the touch plate

Please help me with the power of the SN74LS06N...
5v power to pin 14 and ground pin 7?

Then I must use only pin 1 and 2? (NO Led)

I'm sorry for my poor experience...

Thank you.
Best regards
Carlo

[DaveCVI]

Please help me with the power of the SN74LS06N...
5v power to pin 14 and ground pin 7?

Yes, that is correct.

Then I must use only pin 1 and 2? (NO Led)

From the diagram of the chip, you will see that there are 6 inverters (the triangle symbol) sections inside the chip. I used the section that has pin 1 as it's input and pin 2 as it's output. I also used 2 more sections in the optional part of the schematic that can drive an LED.
The sections inside the chip are all the same - if you are only using one of the section, then you can use any one you like - so these are all good:
input->output
1->2
2->3
4->5
9->8
11->10
13->12
Just use one section's input pin and the same section's output pin.

Dave

[orbscan]

OK Dave!

I go to work

Thank you!

Best regards
Carlo

[orbscan]

I can not find the SN74LS06N
I found the SN74LS05N...
It 'the same?

Thank you
Best regards
Carlo

[DaveCVI]

The 7405 and 7406 are basically the same for the fucntion they do (invert a signal and have open collector outputs); the difference is that the 7405 is limited to TTL (5V) for it's outputs, while the 7406 can handle being attached to up to 30V at it's output. Since the circuit you are building is all 5V, the 7405 will be ok. I used the 7406 as I already had them and I sometimes use them to drive outputs that are connected to 12v or 24V devices.
Dave

[orbscan]

I'm sorry Dave...
What is "PULL UP RESISTER TO 5V"?

Thank you for everything you're doing to me...

Is correct my plan for 4 probes (2 NC and 2 NO)?


Best regards
Carlo

[orbscan]

IT WORKS!!!

[DaveCVI]

Hi Carlo -
That's good news - congratulations!
Sorry about not seeing your post about what is a pull up resisitor - I was away for the weekend. Since it's working now i guess you figured it out.
Have fun - it's really nice when the machine measures the tools for you!
Dave