I'm new to cnc, so any help is appreciated. I need to purchase a larger fly cutter and I'm just curious as to how you go about auto tool measuring them. It looks like most have the inserts towards the outside of the body. It looks like the switch would only touch the body of the bit, not the cutting edge of the knife. That said, one of the bits I've come across has two inserts under the body, two on the outer edge. This seems like it would touch the switch.
3/19/16 #2: Auto tool measure and large fly cut ...
Not sure what kind of machine you have, buy my machine runs a touch off program that looks to the radius value in the offset registry in order to touch off the tool. In the case of my fly cutter, the radius value is 2.0 inches. As the table and touch probe moves under the spindle, it offsets the value in the registry and the insert hits center of the probe. Many tools aren't bottom cutters, so I would be surprised if your machine didn't account for that.
3/19/16 #3: Auto tool measure and large fly cut ...
Alternatively, you can always touch it off the table, just like in the old days before fancy touch probes. If unsure of the procedure, you should learn it. Sometimes the probes break, or malfunction. This way you have a backup that won't keep you from running.
3/20/16 #6: Auto tool measure and large fly cut ...
If you move the Wincnc probe you will be re setting macro parameters, do not do this..The probe is most likely set for the other 99.8 % of the bits you will use for center of bit
I am gonna presume you have an ATC because with wincnc you will always set table top z zero using the table.
I still use a 1.25-1.5 mortise bit takes a few more minutes to machine the flycut But hey...
To top set a bit with wincnc
When ready to set z zero lower the bit to an 1/8th above table top, then the tap lightly the "page down key" (if you are using keyboard) and or pendant if you have one,
slide a piece of copy paper under the bit. slide the paper back and forth til you feel resistance, then one more fast small tap. type in G92z0 or use the screen icon for "set z zero" if you have one.
With what ever machine you purchased you saved a good 6-10 k in cost. that said the heavier industrial controllers have their place, features and cost. for me I started using wincnc machines in 08 and have owned 6 since and have 2 now.
Wincnc is a excellent and stable controller there are a few nuances and this is one for the cost I am willing to live with it.
on the other hand it is fully capable of all kinds of stuff, my best guess is a Macro can be edited to do this offset. most manufacturers who use it will refer you to WINcnc directly for this as it is a control item. I do know some who can do this.
3/20/16 #7: Auto tool measure and large fly cut ...
I didn't even think of top setting the bit. Perfect! Wincnc seems like a very user friendly controller. I'm sure we'll be happy with it. I did stumble onto some info about tool diameter compensation. I'll wait til I've got the basics down before I mess with that.
James, I remember watching your wincnc tutorial videos when we first decided to make this jump to cnc. Very helpful! I just started re-watching them a few days ago to get the thought processes down. Thanks for all the hard work that you've put into them.
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