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FTI2007

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Posts posted by FTI2007

  1. 1 hour ago, gcode said:

    We do stuff like this all the time

    You are on the right track

    Blow a Ø2" hole through it with one of these

    Allied Spade Drill 

    If your machine doesn't have the horse power to drive a 2" spade drill

    drill a 1" hole first

    then helix mill it out half way thru with a 2" high feed

    then flip it and mill from the other side

    A better solution might be to send it out and have it trepanned

    You won't spend a bunch of $$$ of tools and you'll get some nice Ø4" slugs back from the trepan house

     How well do those spade drills work without through coolant?  Since we do not have it might have to go half way from each side? 

  2. I need to bore a 6" hole through a 8"x9" block of HRS 14.25" deep.  My thoughts are to rough it with a 2"  feed mill half way from each side and then bore it to size. The problem I see is getting chips outs.  We only have a vertical mill without through spindle coolant/air.  I would like to drill about a 2.5" hole through the center for the chips to fall out but I am not seeing a lot available for that diameter and length.  Unless I drill it half way from each side. It would just add an extra flip to the part.  I need to do 8 parts. 

    any other suggestions?  

    or suggestions on a drill? 

     

    Thanks

  3. I Did use the help topic before posting here. What I didnt realize is when  I created a silhouette boundary to simplify the geometry  I got some arcs and some splines which is why it was not working for me.  When I just used the original data I got it to work.    

    Thanks

    • Like 1
  4. How does the chain similar work?   I cannot seem to get it to work for me.  So I am assuming I am doing something in the wrong order. Do you pick the chain first and then the chain similar button? 

     

    Thanks

  5. 12 hours ago, Colin Gilchrist said:

    With the Fanuc control, you can only apply Tool Length Compensation (G43) on a single Linear Axis. What you can compensate for depends entirely on the options installed on your control.

    Typically we still use G43 Zx.x Hxx for the vertical distance between the Tool Centerline, and the Gauge Point on the machine Spindle Face. (Machine Z Shift)

    Most of the Fanuc controls I've run use G45/G46 (+ or - Axis Shift) or G47/G48 (double + or - Axis Shift), and either an X or Y value and the Dxx comp register value. (Machine X or Y Shift)

    What the G45 does is "shift" the driven point of the control from the Spindle Centerline in X or Y, to the distance in the Dxx register. (Register is typically offset by '30' or '50', since you need a CRC register, and a Z Shift distance. So T05 would use D05 for CRC, and D55 for X or Y Shift.)

    The Axis Shift is only able to be applied along a single Linear Axis of the machine. This allows you to accurately apply a shift to the Tool Tip, using Offset Registers on the machine, and will still let you use G18 or G19, with G41/G42 Cutter Compensation. The problem with this is that you are limited to doing Planar work, at one of 4 possible 90 Degree orientations. You won't be able to compensate for a non-planar angle with this method.

    This is really a limitation of the Fanuc Control, and the options you have available.

    What you are looking for is Tool Center Point Control, which allows what is essentially "5 Axis Tool Length Compensation". (G43.4 or G43.5) This is however, an option that not many people order when buying a machine like this. This option is typically used with 5 Axis Vector based paths though. (Point to Point)

    The option you really want to use is G68.2 Coordinate Rotation, to rotate and/or translate the Work Offset location and orientation. This aligns the rotated coordinate system to have the "Z Axis" aligned to the Tool Vector, and the Y Axis "lowered" by the amount of the "Machine Z Shift", to account for the distance between spindle gauge face and the angled tool centerline. By rotating the CSYS, the axis system in the Control's memory is aligned so the CSYS Z Axis is aligned with the rotated tool axis. This let's you use "G17", with G02/G03 Arcs, G40/G41/G42 Cutter Compensation, and G43 Zxx Hxx for Tool Length. 

    Ill have to look into this some more and see if we have any of the options you mentioned.  I would guess that we do not. 

     

    thanks

  6. 15 hours ago, gcode said:

    In the posts I've put together for this kind of stuff

    the tool length offset is the distance to the centerline of the right angle head spindle

    It would be the same for every tool.

    The tool length is handled by an  gage length input during posting

    The gcode is driving the C/L of the spindle, just like any other tool

    With our machine we touch off tools like normal without the 90 DEG head on. then when we put the head on those offset lengths are transfered to the head. the post compensates for the additional length the head adds.   I only have problems when  face milling in 2 directions where it needs to apply the offset to 2 axis at the same time.  

    thanks

  7. I have a Ameraseiki bridgemill with a 90  deg head and fanuc control.  When I machine the 90 degrees faces its fine. But when I go to mill a 45 deg face meaning that  I'm cutting in X and Y at the same time I'm having trouble. First my post was not outputting the G44/G43 and the H command when doing the 45 degree faces.  So I got my post updated but now the machine is alarming out when It sees more than 1 axis with the tool length compensation.  If I run it without the tool length comp  and adjust the depth for my tool length  it cuts fine.  and if  I edit it so it only compensates 1 axis its not in the right position.     i hope this makes sense.   any ideas????

     

    T1 M06(6" FACE MILL)
    M200 C225.
    M01
    G17
    G00 G59 G90 G44 H1 X-19.434 Y-13.4214       ( it gives alarm----- tool comp command more than 2 axis) 
    Z2.475
    M08
    X-11.8327 Y-5.82
    G01 X-11.5922 Y-5.5795 F30.
    X-5.3444 Y-11.8274 F65.
    X-5.5212 Y-12.0042 F50.
    G00 X-13.1862 Y-19.6692
    M09
    G91 G00 G28 Z0.
    M30

     

    thanks 

     

     

    90 deg face 45.JPG

  8. Our company is looking into the idea of tool vending machines.   MSC is going to come out and give a sales pitch.  I know a couple other venders I deal with offer the same thing.  We are a small company that does not do production work. Every thing is Custom 1-2 piece . Currently I keep a few Vidmars stocked with tooling that is ordered by our purchaser from a handful of venders depending our she can get the best price. What are some pros and cons of this system???

    Thanks

  9. Can anyone explain to why a Mitsubishi Insert is $88 and a Dapra Is $30?  If they last 3 times as long I would understand but I find that hard to believe.  

    And to the guys that are running any of these what are you using for a holder?  We currently just use an endmill holder for our indexable tooling. I see Dapra recommends  Shrink fit or a milling chuck.

  10. On 7/27/2017 at 2:27 PM, jlw™ said:

    I have had excellent luck out of Iscar and Mitsubishi finish ball ems.

    My favorite:

    http://www.mitsubishicarbide.net/mmus/enus/end_mills/10000730/

    I just got a quote on the Mitsubishi SRF.  I was  little shocked by the price of the insert at $88 each.  but they have a promo where you buy 2 inserts and the body is free so that helps.   I am waiting on a quote from DAPRA. 

  11. On 7/28/2017 at 9:51 AM, George Vassilev said:

    rest mill is  usually follows previous operation, but if you want to change it turn off  the stock /rest switch, go to the toolpath control tab change it and then turn on the rest mill under stock

    I tried that but as soon as I turn stock back on turn changes it back to inside. 

  12. On 7/14/2017 at 2:09 PM, Greg_J said:

    I haven't found a way inside the tool path but this work around may work for you.

    Right click on the program, click on Edit selected operations then Reverse tool path.

    Keep in mind climb and conventional milling you may want to reverse them.

    I tried this but it locked the operation and messed it up.  It still started in the middle but also did some huge arcs.  I ended up having to delete it and start over because I couldnt reverse it again. 

    On 7/14/2017 at 2:19 PM, George Vassilev said:

     Not the best solution, but  if  the model allows use scallop instead there is  a  switch  go  in/out site. Hybrid doesn't have it.

    I hope they  add it in the near future. 

     

    Thanks guys

     

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