Help With Toolpath Verification

Help With Toolpath Verification

oldtbone55
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Help With Toolpath Verification

oldtbone55
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@LibertyMachine

 

Hello Seth, 

 

I'm asking for your help with the CAM operations for a guitar neck that I've just finished modeling as you've been such a great help to me before. I've created the toolpaths but need someone to give them a quick review to see if there's anything wonky or if I could improve any of the toolpath operations. It looks like there's no way to create tabs for a 3D contour like there is for a 2D contour so I only have tabs on one end of the neck. Do I have to create tabs as part of the model for the headstock to get around this problem or is there another way? I've attached my file.

 

Your help is greatly appreciated. Thanks.

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Message 81 of 88

daniel_lyall
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@oldtbone55 wrote:

@daniel_lyall

 

Hey Daniel, thanks for the information and the example. I looked at each one and then decided to use the pocket IDEA 2 toolpath. It required the shortest amount of machining time and worked perfectly. I've been working on machining the neck and ran into a couple of issues. The op2 stock that's used to create the jig and the op2 stock that fit together to perform op3 have interference issues and won't fit together. I can get around this by sanding off some material from the jig but would prefer to have this done when the jig is machined. What would be the best way to do this? Should I re-sketch those faces and then move the sketch lines in a bit or can it be done when setting up the toolpath operation? The one thing that I've found out is that it is critical that both the jig and op2 stock centerlines stay perfectly aligned. With my first attempt the op2 stock was skewed a bit and of course the top of the neck didn't get machined evenly on both sides.

 

First thing to do is measure the tool you will be useing, if it's not quite to size what it sounds like it is under or over size you add that to what you are cutting out so it is bang on.

Use ever a offset on the machine what's done on the controller or adjusting the area being cut out with a sketch or offset faces or the easy way adding that amount the tool is off by, by putting it into the Additional offset under tool containment say if it's 0.002 out don't put that measurement in put .0019999 so it gives you a slip fit.

 

My second question is, how do you make sure that the stock you're going to machine is lined up with the machine head X-axis travel? I was using the waste board edges but it turns out that the waste board isn't necessarily aligned with the machine head. I then tried scribing a line down the center of the stock using a brad point bit inserted in the machine head. This did help as it turned out the stock wasn't lined up with the machine head x-axis using the method I described above. Is there another way that doesn't take as much time? I've asked the shop if they could machine grid lines on the waste board as a guide.

 

 

Do it the same way you were doing the body of the guitar do the first cut then cut the jig out then try to fit the model back onto the jig for it's second op if it's out adjust it then.

 

Then the next time you goto use the jig put a couple of bits of wood onto the table screw them down or clamp them down, have one along the X axis and another one along the Y axis and cut the inside faces of them squire, have the origin for it it in the corner where the X and Y meat and change the origin for the jig to the same places (you can do the samething for the first op) or have a offset from the center to the corner, and do the same thing for the second op.

 

As long as you are useing the same origin point and the 2 bits of wood are square to each other this work and only take a couple of mins to do.

 

 

Thanks again.

 

 


 


Win10 pro | 16 GB ram | 4 GB graphics Quadro K2200 | Intel(R) 8Xeon(R) CPU E5-1620 v3 @ 3.50GHz 3.50 GHz

Daniel Lyall
The Big Boss
Mach3 User
My Websight, Daniels Wheelchair Customisations.
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Message 82 of 88

oldtbone55
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@daniel_lyall

 

Hey Daniel, once again you have provided sage advice. Thanks for the great help and words of wisdom.

 

Cheers! Smiley Very Happy

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Message 83 of 88

daniel_lyall
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I am just trying to make sure everything is constant and do the why If I know why 


Win10 pro | 16 GB ram | 4 GB graphics Quadro K2200 | Intel(R) 8Xeon(R) CPU E5-1620 v3 @ 3.50GHz 3.50 GHz

Daniel Lyall
The Big Boss
Mach3 User
My Websight, Daniels Wheelchair Customisations.
Facebook | Twitter | LinkedIn

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Message 84 of 88

oldtbone55
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@daniel_lyall

 

Hey Daniel,

 

After checking some dimensions I found that I had to increase the thickness of the neck so I re-did the whole thing again. It was actually very good for me as a review working in the sculpt environment and it didn't take me that long to re-create the neck, maybe better than it was the first time. I'm stuck currently at the point where the mesh stock needs to be turned into a solid body. I can't seem to get this to work so that I can combine the mesh stock body and the jig stock body in order to cut the jig shape into the jig stock body and need your help. I've attached my new file and you'll see where I'm stuck on the timeline. 

 

Thanks for your help.

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Message 85 of 88

oldtbone55
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@daniel_lyall

 

Hello Again Daniel, 

 

I was finally able to figure out the mesh thing except that I'm now getting an error message that I've never seen before. I must tell you that I used the mesh edit screen to reduce the number of faces of the brep model before I converted it to a brep. I didn't get any error message about the number of faces, however when I tried to combine the two bodies and perform a cut I got an error message. I've attached a screenshot.

 

Thanks.

 

 

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Message 86 of 88

daniel_lyall
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When you do the conversion of the stl do it in it's own file so you can turn the timeline off.

 

you forgot your screenshot 


Win10 pro | 16 GB ram | 4 GB graphics Quadro K2200 | Intel(R) 8Xeon(R) CPU E5-1620 v3 @ 3.50GHz 3.50 GHz

Daniel Lyall
The Big Boss
Mach3 User
My Websight, Daniels Wheelchair Customisations.
Facebook | Twitter | LinkedIn

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Message 87 of 88

oldtbone55
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@daniel_lyall

 

Dohh!

 

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Message 88 of 88

daniel_lyall
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@jeff_strater If you're not at AU can you have a look please, or pass it on.


Win10 pro | 16 GB ram | 4 GB graphics Quadro K2200 | Intel(R) 8Xeon(R) CPU E5-1620 v3 @ 3.50GHz 3.50 GHz

Daniel Lyall
The Big Boss
Mach3 User
My Websight, Daniels Wheelchair Customisations.
Facebook | Twitter | LinkedIn

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