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Post by Jason R on Sept 5, 2017 4:34:45 GMT
Hello everyone, Hopefully someone can advise me what I am doing wrong. I have .75 in stock that I am using. MAIN ISSUE: I go into UGS and move the spindle where I need it and hit Reset X Axis/Y Axis/Z Axis, but when I load the Gcode and hit send, it starts higher than the actual stock and does "air" cuts, and never goes to the depth I need it to. Is this an issue in the settings of my G-Code or UGS? I have attached my G-Code and would love if someone can check it out and advise on tweaks to get this working right. Also, I have the following settings on the cuts that could use some tweaking if possible. 1/8 ball end mill Feed rate 2400mm/min Feed per tooth .04mm Plunge rate 762 mm/min PASSES: Tolerance .1mm Maximum stepover .06 mm Multiple Depths - Maximum Roughing stepdown 1mm Fish.nc (20.64 KB) Fish.nc (20.64 KB) |
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Post by Jason R on Sept 5, 2017 4:35:49 GMT
Also, Any reason why the spindle tore off the top portion of the fin?  I'm guessing feed rate is too high? Thanks |
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Post by aforww on Sept 5, 2017 11:09:49 GMT
Could be a few things. Your WCS zero in cam may be off, you may not have the model selected, may have something off the "heights" tab, or your start Z height is set really high. I'd need to look at the Fusion file to tell for sure. But I'm thinking it's s model/height setting issue.
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Post by Jason R on Sept 5, 2017 21:05:16 GMT
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Post by aforww on Sept 5, 2017 23:43:31 GMT
Everything looks good as far as I can tell from those pictures. You could probably lower your feed height a bit. With a 6mm feed height and a 3 mm step down, it's going to make two passes before starts cutting anything. As for why it cut the tip of the tail off, I can only gather from those pictures that it was a funny arc situation because the "roll around corners" box is checked or That's where it's doing its lead in which is creating an error in the arc. If you simulate your operations and zoom in on that area, do you see the toolpath spiral in that particular spot?
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Post by Jason R on Sept 5, 2017 23:48:55 GMT
Is a 3mm step down too much or does it sound right for a .125 bit?
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Post by Jason R on Sept 5, 2017 23:50:29 GMT
So maybe the issue is UGS? What should I check?
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Post by aforww on Sept 6, 2017 0:02:09 GMT
Everything I mentioned is a part/result of your Fusion design options. Nothing to do with UGS. I could be wrong though. I'm just speculating based on your description and the pictures you sent. 3mm with a 1/4" cutter shouldn't be too deep. Though going at 2400mm might be a tad fast.
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Post by Derek the Admin on Sept 6, 2017 0:23:13 GMT
The Carve King should be fine with that feed rate as long as you have a good rpm to go with it (good being a reasonable chip load determined by your rpm, feed rate, and flute count.... see the other thread currently running on this)
As Aforww mentioned, the 6mm feed height does mean it's going to air cut for a while.
Is the end mill resting at the top of the stock when you hit reset Z?
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Post by Derek the Admin on Sept 6, 2017 0:26:00 GMT
Also, are you referring to it chipping the fin or cutting it? Chipping is just the nature of the beast sometimes in fine points. Taping over the area with masking tape or using a downcut end mill will help prevent that.
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Post by Jason R on Sept 6, 2017 1:27:16 GMT
The Carve King should be fine with that feed rate as long as you have a good rpm to go with it (good being a reasonable chip load determined by your rpm, feed rate, and flute count.... see the other thread currently running on this) As Aforww mentioned, the 6mm feed height does mean it's going to air cut for a while. Is the end mill resting at the top of the stock when you hit reset Z? The end mill is resting at the top of the stock when I reset the Z. I feel that if I put a .75 contour, the endmill is going down all the way through like expected. Maybe I will try and do a .76 contour instead? |
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Post by aforww on Sept 6, 2017 1:35:10 GMT
The Carve King should be fine with that feed rate as long as you have a good rpm to go with it (good being a reasonable chip load determined by your rpm, feed rate, and flute count.... see the other thread currently running on this) As Aforww mentioned, the 6mm feed height does mean it's going to air cut for a while. Is the end mill resting at the top of the stock when you hit reset Z? The end mill is resting at the top of the stock when I reset the Z. I feel that if I put a .75 contour, the endmill is going down all the way through like expected. Maybe I will try and do a .76 contour instead? The contour depth is fine. Optimally, you want to cut the exact depth or a couple thousandths shallow. (Onion skinning). Not sure I understand what problem you expect that to fix though? |
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Post by Jason R on Sept 6, 2017 1:38:57 GMT
The end mill is resting at the top of the stock when I reset the Z. I feel that if I put a .75 contour, the endmill is going down all the way through like expected. Maybe I will try and do a .76 contour instead? The contour depth is fine. Optimally, you want to cut the exact depth or a couple thousandths shallow. (Onion skinning). Not sure I understand what problem you expect that to fix though? I just want it to cut all the way down. Right now it's not even getting to the bottom of the stock to leave tabs. When I get a chance I will try and post a video or so of my issue. |
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Post by aforww on Sept 6, 2017 1:47:10 GMT
Take a picture of your cam setup , geometry tab, and a picture of the tool paths after they've generated.
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Post by Jason R on Sept 6, 2017 1:49:01 GMT
Take a picture of your cam setup , geometry tab, and a picture of the tool paths after they've generated. Roger that. Will post in a little over an hour (waiting for kids to go to bed). All this help is very appreciated by the way. |
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