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Pgreenlaw

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Posts posted by Pgreenlaw

  1. 3 minutes ago, Colin Gilchrist said:

    Awesome, but just be careful, since you can see there are areas on the toolpath where a "cut on one surface ends", and the tool then needs to transition to the "start of the next cut". You can see there are 'loops' where the cutter is 'staying down', and you just need to check in Verify to be sure those loops aren't actually gouging the part. Technically, they should not do that against the "drive surfaces" but there are other adjacent surfaces which may not be checked for gouges.

    That is the purpose of the "Check Surface" function. To make the toolpath "aware of other adjacent surfaces", which are not part of the toolpath drive geometry, but where you need the path to not touch them.

    I only add Check Surfaces, "if I have to", since they will tend to either "modify the cut motion" (trimming away some portion of the path), or they will cause the tool to retract.

    So, if you do need to use them, select them as "check surfaces", and then put a "stock to leave" value in the Surface Parameters. I would use a value like "0.002" (0.05mm), on the Check Surface Stock to Leave...

    This is all great info that I truly appreciate and will add to my programming notes for the future. Thank you again for the second response. 

    I was slightly concerned with the small loops but everything looks great in the simulation and I think these paths will give us a great looking part and eliminate a lot of hand deburring that I am trying to avoid:)

     

    image.png.98e899293a33d29b0ebb2369f47c755b.png

    • Like 1
  2. 15 hours ago, Colin Gilchrist said:

    Number 1 trick to getting the tool to "stay down", is to adjust your Gap Settings.

    But yes, you've likely got a Flow Direction issue.

    First, try this:

    Increase your Gap Size to 0.500".

    In your "method" to keep the tool down, select "Follow Surfaces".

     

     

    Thank you very much for this suggestion. I had played with the gap settings using the "% of stepover" and not getting the results I wanted, switch from % of step over to "gap size" and follow surfaces method and I now have exactly what I wanted. Thank you again!!

     

    image.png.913a1f526849b33c350901c18eb84651.png

  3.  

    Are there any tricks to getting rid of the retracts when using the 3d flowline toolpath? Currently driving off of surfaces made from the solid model chamfers. 

     

    I am assuming the retracts are because the surfaces are individual surfaces instead of one flowing surface? I am not experienced with modifying surfaces, but it seems that if I was able to join all of these surfaces I could create a smoother path? 

     

    Looking for any tips or tricks to expand my 3dmilling experience. 

     

    image.thumb.png.2a2cd494750553c29f731de8342a4f4e.png

  4. We just got a new Doosan NHP5000 installed at our shop. We are interested in adding vacuum fixture air supply ports that each pallet can access when we run vacuum fixtures. In a previous shop I have seen this accomplished by drilling the center pallet changer post thru on top of the machine, installing air swivel connection at this point, and then running a T splitter with an air fitting facing each pallet. I liked this style as it allowed air to be hooked up and the machine could run and pallet change uninterrupted. 

     

    Looking for any other ideas or tips/tricks if anyone has some?

  5. 2 hours ago, Afshin karimi said:

    For holes Helix Bore is working. Tnx. 

    But my problem is with Boss type feature, when you use contour with ramp option Arc filter is not working (in Helix Bore it's working well) and generate nc files with x,y,z and for some parts it reaches thousand of lines and take a lot of time for me to send it in my machine(Heidenhain 426). I'm looking for a solution to reduce the number of lines without loosing accuracy.

     

     

     

  6. 6 minutes ago, crazy^millman said:

    Misunderstood I was thinking you wanted to machine the whole shape with the 1/8 ball endmill. Yes Steve pointed you in a good direction to remove the left over stock.

     

    We have worked with this customer on changing/tweaking features before... last time I did that I had about a 1.5 week delay while they updated the solid on their end and created a new rev so there were no issues at incoming inspection. Machine sat too long waiting on customer approval/updates, jobs behind that had to get pushed back, etc.  I am taking this opportunity to avoid the delays on their end with a new rev and trying to gain some programming experience at the same time:) Thank you for taking the time to reply, all feedback is greatly appreciated on these forums. 

  7. 17 minutes ago, Seedy steve said:

    there is a path called finish leftover hiding away.

    u can use use comand finder on home strip to get it out.

    I was able to find it by right-clicking. Thank you very much, sir. I have never even seen or heard of that toolpath but it worked perfectly for what I am wanting to do. Thanks again for learnin' me sumthin' new:)

     

     

    RAMP PREFINISH3.png

    • Like 1
  8. I have a part that has been challenging me with my programming skills from start to finish. I am almost complete with the program and looking for any advice on finishing/continuing the inside .062 rads down the corner of this "ramp". I finish the majority of the ramp surface with a .375 ball end mill using a scallop tool path. I will have to finish with a long-reach reduced shank (1.5") .125 ball end mill. I have played with a few toolpaths but am not getting results I am happy with. Any help or suggestions are greatly appreciated!

     

    PS. the ramps have no finish call out, will not be exposed to the end customer, and provide a pathway for air flow only. Our customer is more concerned with reduced cycle time and cost per part when it comes to these features. 

     

    RAMP PREFINISH.png

    RAMP PREFINISH2.png

  9. I am fairly new to mill programming and looking for tips or techniques on making a custom deep hole drilling cycle in 6061 aluminum for a vacuum fixture.

    We have .187 high speed steel drills with 3" of flute and 10" overall length twist drills in the shop and I was hoping to get these holes done without ordering a special drill. 

    Research (cnc cookbook . com) is telling me a normal twist drill CAN NOT drill this deep....does anyone agree/disagree with this??

    I don't care how long the cycle takes, I am trying to go slow and avoid scrapping out a very large and expensive piece of aluminum. 

    This is for a large vacuum fixture and I only need to drill these holes once and there is 4 holes total I need to drill.

    Any help is appreciated:)

     

  10. Sorry to dig up an old thread but this is almost the exact situation at my current shop I am dealing with. we have 3 of the exact same model and control ES450's in our shop. 2 of them have the "type C' offset table that has 4 columns (H, H wear, D, and D wear) The last machine has the "type B" offset table with only 1 column of just basic offsets numbered 1-99

    I have the same issue where if I give a program to a setup guy and he sets it up on the type B ES450 without altering all of his programmed D values, the machine will crash when it called up the tool length as its D offset and tries to make a -10" offset 😑

    Does anyone know if the upgrade from type B to type C offset tables is something that can be done in house with a parameter change? Or do we need to get with FANUC??

    All 3 machines are 1997-1998 Matsuura ES-450H models with Fanuc 18i-M controls which is why I was hoping it was a simple parameter change.

     

    thanks for any help or direction

    fanuc type B offset table.jpg

    fanuc type C offset table.jpg

  11. Does your machine have air blast??? Last resort if you still have to stop the machine to remove chips maybe instead of an M00 that requires operator interaction keep it all automated? Tool change to a small diameter empty holder (whatever diameter holder provides good air pressure, empty collet holder would work as well) and air blast your chips out. After good air blast and chips are gone pull the 3/4 back out and continue roughing. 

     

    Also, that 3/4 should have no problem roughing at full depth in 6061 with a good dynamic routine. Depending on machine HP, reduce your step over amount. Try the non chip breaker style if you have it. This will create longer skinnier chips and actually utilize most of the 3.5" flutes your end mill.  

    • Thanks 1
    • Like 1

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