64.459 lượt xem 23 thg 3, 2018 Stuart teaches you how to use a edge finder to manually find your work offsets.
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Stuart McConkey from Titans of CNC demonstrates how to manually find the X and Y edges of a workpiece using a manual edge finder. The process involves spinning the tool at a specific RPM to identify the exact point where the tool tips out, then calculating the offset based on the tool's radius to establish a precise part zero.
Hi, my name is Stuart McConkey here at Titans of CNC, and in this video I'm going to show you how to edge find your X&Y.
When edge finding your X&Y, there are two different ways. You can use a probe, which some CNC's come with, or a manual edge finder.
When using the manual edge finder, we typically use an RPM of 1,200.
Once the tip has stepped out, then we know that that is directly in line with the edge of our part.
Then all we need to do is take our tip diameter, divide it by two, and move over into our material, so that way we can have our true edge.
Now that I've explained how it works, let me show you in the machine.
Now that I've put my edge finder in, I'm going to turn on the spindle to 1,200 RPM.
First, I'm going to go to MDI, which is manual data input, and I'm going to type in S for spindle speed, 1,200, and M3 for clockwise rotation, end block insert, and cycle start.
This will turn the spindle on to 1,200 RPM, spinning clockwise.
Now that the spindle is turning, I'm going to hand jog it into position, away from my material, so that way I can creep up next to it.
Once I've hand jogged it close, I'm then going to go to my thou increment, and I'm going to slowly creep up to the edge of my part.
Once I've gotten close to the edge of my part, I'm going to slowly click one thou increment, one by one, until I can see the edge finder come to center.
Now that the edge finder is stable, and has stopped wiggling, I know I'm very close, and I'm just going to barely click the one thou increment, one at a time, until I can see the edge finder step out of center line.
Now that the edge finder has stepped out from being in the center, I'm then going to come over to my G54, and I'm going to hit part zero set.
I'm going to take half my tip diameter, which in this case is a hundred thousandths, or .1, I'm going to subtract it from its position, so that way I can get to the center edge of my part.
Minus 0.1, enter.
Now that our edge finder has stepped out of center line, we're ready to set our X.
I'm going to go over to my X axis tab, and I'm going to hit part zero set.
Then, I'm going to take my tip diameter, divide it by two, and add it to the position that the machine has just set.
And that's how you manually zero your work offsets.
