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huskermcdoogle last won the day on April 28 2021

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  1. IMHO, Using a macro variable to check for the right condition during execution is the best way. This is easily be accomplished through some post mods. Basically, when you do a tool change check to make sure the offsets are setup correctly for how you have it programmed. So if that program is in the wear convention you will have the post output a check at each tool change to make sure the offset values are programmed to the expected magnitude, 10% of the tool diameter is usually more than enough. You could also do it at the operation level in Mastercam and throw an alarm during cutting execution, and check to see how comp is set for that op at both the tool change and null tool change portions between ops. Many different options here. G10's are fine, but then you would have to add them to all of the programs from the past to make sure those are correct, when you run a legacy program.
  2. Theoretically you could hit the flats, but you will never get the corners with a 4 axis swarf cut. That said, you could cut the flats and then surface the corners. You wouldn't even need swarf to at all do it that way either. You do it 3+1. Happy grammin'
  3. With A286 you are in the realm of needing to make a chip but not rub like any other S3 type Nickel based material. As mentioned earlier, runout is killer with these small tools as usually runout is easily greater than your chipload... Just as a rule of thumb, it is pointless to run a chipload less than your runout... I have found that chiploads under .0002" usually don't have any benefit any typically yield worse results with anything larger than .062", but given your cutter diameter, you will need to reduce some if slotting, so their recommendation of .0001" should be achievable, but you will have to have runout less than half of that likely, and you will need to find a sweet spot where you can still make a chip, but not overload the cutter and break it from bending load. SFM likely won't matter much as you probably don't have enough spindle speed to actually burn up a cutter, and is more going to be a function of balance and how dynamically stable your spindle is.
  4. How often do you need these complicated subs? If it is all the time then maybe you need all of the above. But if it is just a once in a while, then it shouldn't be an issue. You would only run that entire part in EIA, you wouldn't have to ditch Mazatrol for the simple parts. Any chance you can call a Mazatrol program from an EIA program?
  5. For Finishing? Depending, I guess it could be done, but it is going to push on the plate more than a 45degree cutter will. I would say a positive positive (positive insert, positive axial/radial rake) style 45 degree facemill will be your best bet. Kennametal KSOM Mini cutter (KSOM200OF5345M3) with OFKT53AFEN6LB inserts in KC522M grade would be pretty hard to beat. Otherwise, a Dodeka Mini would be a possible good choice with ground periphery (HNGJ) and LD chipbreaker inserts in KCSM40 grade, it just won't be quite as free cutting as the KSOM. Both would be very versatile, as there are many insert choices to choose from if needed.
  6. Can someone explain to me why a three point Adjustable jaw boring ring needs to be accurate? IMHO there is no way the counter bores in soft jaws are held to that tight of a concentricity/runout tolerance, which would defeat the purpose of an accurate boring ring. Nice fits to the jaw counterbores would be a nice to have, but once again, I don't think it's needed. What's most important is that when you spin the ring to open it into the correct location, that it's close enough and won't bind sideways between two jaw, but instead pushes to the center. If it's pushing to the center the forces will be properly balanced between the jaw, they have to as it needs to form an equilibrium. Ready to be edumacated here.
  7. Then you will need to create multiple Optirough paths with each step as the max depth top to bottom. But I believe Ron is correct, step up would be the way to hit the other flats automagically. Otherwise, your step down would need to hit each step evenly for it to clean each step with the same stock as you go down. I "think" if you have a small step down, and a "large" step up (say 1/2 of the step down) it will hit those flats at your stock allowance, and won't add a bunch of extra passes.
  8. This is one of those video's that gives you the realization that there are many people out there in other industries that have a DEEEEP knowledge directly applicable to our profession and possibly have more creative and or efficient means of solving the day to day problems we run into, many of which problems most of us don't even know we have.... I am deeply frustrated with the leadership of our nation in the last 40-50 years and how they have classified machinists. If you look into it, machinists are generalized as being the lowest IQ, even considered barely "functional" members of society. While there may be grunt labor in the machinist labor force, I have found this to be far from true, I would consider most of these people to have been either under challenged during their education, or not mature enough when in school to realize the application or importance of a good foundation. I feel lucky that I had people challenging me and gave me a healthy appetite for learning about what interested me, but at he same time, I wasn't mature enough to realize the importance of the foundational knowledge that I have been exposed to but can't recall as I wasn't invested to learn at the time. This general classification our government has put on "machinists" has made it very difficult to attract talent that is willing and able to think at the level of the young woman who created this presentation. I feel if there were more high level thinkers in our industry who were willing and able to encourage and nurture the "under challenged" folk, our industry in the country would evolve into something more sustainable. I realize that there are some of us on this forum that possess both some of the hard and soft skills required to be those mentors, but we are few, and typically not at the same place of employment, only to collaborate on improving our collective trade on forums such as these. Hopefully my ramblings are coherent, getting the jumbled mess that is my thoughts onto paper isn't even close to a linear process....
  9. This is now fixed going into 2023 apparently. Haven't tested yet with the public beta. I doubt it is perfect, but certainly looks better. https://www.youtube.com/watch?v=Gs6XS4Tgmog
  10. Okuma's without hicut or supernurbs on run really smooth and fast, but boy do they clip corners....
  11. Almost always, if the geometry has any complicated features, or if it is 3d roughing, Dynamic or Opti is going to be better. The biggest decision that needs to be made will usually be in what to use for a stepover. Sometimes, a 40-60% or even greater in shallow applications stepover with dynamic motion with conventional speeds and feeds will yield very very good predictable results and will yield more productivity in tool life and process reliability than a conventional toolpath, with only a small cycle time premium. On paper the MRR might be more with a light stepover with speed bonus, but the extra air cutting and acc/dec slowdowns make it overall slower. Heavy radial stepovers make for a good balance without a lot of extra air cutting.
  12. Very rigid and defined processes are needed to make this work, even then it still falls short. We have had some projects recently that have tried to capture this capability for some product families, it's now better than it was but it is very custom. This is in NX.
  13. I had a really nice response to this written up. Opened the catalog to look something up and lost it. Dummy me Long story short. Seeing as this is my day job... If indeed you are running that long tunable adapter. You will likely need to drop DOC down to .020-.040". Unless it is 65-45-12 DI and is soft as butter, do not run those at 1200 sfm, treat it like one might steel or use K3 material group numbers, run those D KCK15 inserts at 700-800 SFM, and start around .040" on the feed. If those don't hold up due to chipping or built up edge, switch to KCPK30 in the GP chip breaker, and run 550 SFM, and .040" on the feed. Same light depth. If it is stable, feel free to walk the depth up until it isn't and back it off a bit to regain stability. Oh and ramping is going to more than double the radial load, so avoid it if you can in this case. If you can't avoid it due to fixture constraints, you can't... FYI for the group 7792 inserts should not be run at over 80% of max ap1 listed for it's IC size. When shouldering it can't be avoided at the wall, but it can handle it there due to chip thinning, if you run that deep you will likely blow the corners off the insert at any feed over .015 ipt. Lower depths of cut at higher feedrates are almost always more productive.
  14. OK, I was able to get it to work by loading op defaults, and with the combination of using the green check. Thanks for the help!
  15. So I think this is a great toolpath... Used it a few times, it has worked well, tedious, but is easier than doing a 3D contour and doing a toolpath edit. Trying to use it today and I can't add segments. I'll add them into the list and then apply the changes close the dialog and regen, and none of the changes come through. Open it back up and only the first depth and the retract segment is in the list. GRRRRRRRRR

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