Hello all. Merry Christmas and or happy holidays to all.
I have a question on the Titan 6M setup. So we have a piece of raw stock that has dimensions of 2x2x1 and when selecting the WCS Nicole mentions to select model box point. Shouldn’t this be stock box point since I’m probing the stock top instead of the model top? The model top cannot be probed since it hasn’t been faced yet.
I’m a bit confused on this. When I have a piece of raw stock I always select stock box point and after this face has been machined I then select model top etc. I hope someone can help me with this because I just can’t find a clear answer to this.
Thanks in advance!
T
There are many ways to set your WCS for a part. Some companies use model points for WCS in the CAM and then compensate stock differences by offseting when using the probe. Other companies and my preference is to use my WCS as the fixed jaw and part edge stop and offset the stock in the CAM process. As long as you provide instructions in your setup sheet or notes in your program for the setup person. An advantage to using the model point your XY coordinates if using G41 or G42 will match your part dimensions. When programming manually, this made it easier to program. I would recommend when setting your Z work offset to do it initially and not face and then probe it. Hope this helps. Merry Christmas!!
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Merry Christmas!!!
How do you set up your part is all relative to how you like to do it. Sometimes I will skim the top of the part and then call that 0. I’m not sure how probing works but I’m sure that there’s some offset that you could use after you probe. But it really doesn’t matter as long as you know what you’re doing and the end result is the same a good part.
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Gotcha and thanks for the reply. I was under the assumption when establishing your Z0 on raw stock and setting the wcs using model box point this tells the system the surface has already been machined.
In other words if I have a facing op that needs to remove 0.02" and I set my wcs to model box point I would need to add the +0.02 offset for my Z since the material hasn’t been removed yet. I think I’m going to setup a test piece of material to try this out both ways to see what happens. I think after doing this test it should really clear things up for me to actually see the results.
Merry Christmas and thanks again.
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@TroyGomez that is correct. When I set my stock in my CAM process I add .020" to the model for stock. I then probe the top of the stock part and the program will face off .020" and the new machined face is now Z0. Another shop I worked in we set the Z0 at bottom of fixture (top of parallels). I did not like this method. When I set Z0 at top of stock or model, any negative Z movements will be down into the part.
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Thanks again for the help. I’ve been in IT specifically the Internet service provider business for 30 years. I just wish I could find a shop for some mentoring. I love working with metal and I’m just a hobbyist (Can’t you tell lol). Just wanting to learn good habits/strategies on the first round.
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Your welcome, we are all learning. There are several ways to get a job made. It does not hurt to try other ways to do something. Find what is comfortable and makes sense to you and go for it.
Imagine you had to abort at some point. With the WCS on the model you are able to re-reference at any time. If you WCS off the stock you lose the surface (point) once the material is removed. I’m a beginner as well but this is the main reasoning as I understand it.