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Type: Posts; User: Cmailco

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  1. Replies
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    tailstock break-away problem

    The machine is a T42 SP and it shows to have a tailstock break-away error. Problem is two-fold.... one, the machine hasn't been used in over a week and it's in exactly the same position...
  2. Thread: 3d models

    by Cmailco
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    1,048

    I've built a number of 3D models over the years,...

    I've built a number of 3D models over the years, from 'art' to 'part'. I could send you something if you're interested, just let me know the file format.

    Chuck
    ...
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    Welcome ronin and glad to be in the learning boat...

    Welcome ronin and glad to be in the learning boat as well... the day I stop will be the day I draw my last breath! :)

    For ****s and giggles:...
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    What size are the holes? What are the other...

    What size are the holes? What are the other requirements; ie, true position, etc?

    Thanks,
    Chuck
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    959

    Use as narrow an insert as possible, within...

    Use as narrow an insert as possible, within reason.

    Sometimes I will look at part lengths, possible cut-off tool candidates, calculate # of parts per bar and make my choice that way. If going...
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    967

    Sorry for the late reply Rusty, somehow I missed...

    Sorry for the late reply Rusty, somehow I missed this post on my last trip through.

    To answer your question: Yes, use a reduced shank tool for the corners with 3-4 flutes, variable helix, .015-.02...
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    No experience with Buck Eye, haven't even heard...

    No experience with Buck Eye, haven't even heard of it till now.

    If you don't mind me asking, what types of material do you machine most regularly?

    Regards,
    Chuck
  8. Replies
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    1,957

    Learning is what keeps this stuff interesting....

    Learning is what keeps this stuff interesting. I'm a Manufacturing Engineer but tend to lean heavily towards the machine trades, do a great deal of programming, toolmaking, automation, general...
  9. VoluMill is a stand-alone roughing program that...

    VoluMill is a stand-alone roughing program that just about every CAM manufacturer has integrated into their product now. I believe SurfCam has a roughing engine called TrueMill but they're all...
  10. Replies
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    967

    Ok, the fastest way to do this might not be...

    Ok, the fastest way to do this might not be feasible because I don't know your tooling situation and what you have at your disposal. Lots of variations on this though:

    1. Use a hi-feed mill and...
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    2,362

    http://i379.photobucket.com/albums/oo237/metric_01...

    http://i379.photobucket.com/albums/oo237/metric_01/breakout.png

    A diagram might be more helpful. The part, nested in the material, is shown to the left and a magnified cross-section view of the...
  12. Replies
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    A break-out is a method of holding parts in say,...

    A break-out is a method of holding parts in say, a piece of bar stock without leaving tabs. If you were milling a 2" square out of a piece of 1/4" thick aluminum sheet, profiling the part with say, a...
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    947

    I'd suggest PVD (diamond) coated tooling for...

    I'd suggest PVD (diamond) coated tooling for graphite. Depending on the brand, you could spend 3-4x as much per cutter... but see 20-30x the tool life, so it's really a no brainer as graphite is...
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    972

    Depending on the die geometry, 3003-H14 will...

    Depending on the die geometry, 3003-H14 will probably be your best choice, though 1100 has slightly better formability.

    Regards,
    Chuck
  15. Replies
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    I've got an old Lufkin tap wrench that belonged...

    I've got an old Lufkin tap wrench that belonged to my old man... very well built piece, but then, Lufkin use to make a lot of nice tools.
  16. Very neat stuff, thanks for the images Lazerus. ...

    Very neat stuff, thanks for the images Lazerus.

    Knowing the machines is a big plus for a programmer.. actually, being a 'machinist' first, makes for a better programmer. I don't know many...
  17. Replies
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    Thanks for the plug, glad to see that people are...

    Thanks for the plug, glad to see that people are getting something from the blog. I don't make anything off of it, nor do I intend to. Just seemed like a good way to share some knowledge with fellow...
  18. Replies
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    Just a 'for the record' but, diamond cannot be...

    Just a 'for the record' but, diamond cannot be used on ferrous materials; the friction and high heat in the presence of air causes the diamond structure to decompose into carbon dioxide. It basically...
  19. Lazerous, post away! I'd certainly love to see...

    Lazerous, post away! I'd certainly love to see those pics.

    Are you a hyperMill user?

    Cheers,
    Chuck
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    Absolutely no experience with the Sharp stuff,...

    Absolutely no experience with the Sharp stuff, sorry.
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    We just moved to hyperMILL from Esprit and so...

    We just moved to hyperMILL from Esprit and so I've been trying to absorb as much info on it as I can. The Open Mind folks tend to be a tight-lipped group from what I've gathered so far. Not much info...
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    Double column are nice but, what's your budget...

    Double column are nice but, what's your budget for this machine? What types of parts do you make? What tolerances?

    Regards,
    Chuck
  23. Replies
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    You can send that NDA to....... :) No, I...

    You can send that NDA to....... :)

    No, I totally understand. If you plan to use CAM, then I really don't see much advantage in the Hurco. There's a local model shop that does very nice work on...
  24. I agree with Rich, 4340 machines quite nicely at...

    I agree with Rich, 4340 machines quite nicely at 28-32 (pre-heat) HRC, there really is no reason to anneal. It will actually finish better in the pre-heat condition. Let's also not forget, your time...
  25. This machine actually belongs to a manufacturer...

    This machine actually belongs to a manufacturer local to me, one that I happen to work with on occasion; a producer of landing gear and large airframe components. Your question was, and I'll...
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    Joe, surface finish is a function of the maximum...

    Joe, surface finish is a function of the maximum deviation from the surface. If you were to look at a surface under a microscope, machined with say, a 1/4" ball mill stepping over at .005" each pass;...
  27. Make your own aluminum motorcycle helmet, with a little 5-axis friend...

    Be sure to watch in HD

    YouTube - 5Axis Machining cnc [www.disn.co.jp] 5Achs DMG/HyperMILL

    Regards,
    Chuck
  28. Replies
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    Short answer: Yes, if you did nothing but change...

    Short answer: Yes, if you did nothing but change tools from say, a 1/4" to 5/16" ball, you would achieve a better surface finish with the same step-over values due to the fact that you've reduced the...
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    Using a drill specifically designed for cast iron...

    Using a drill specifically designed for cast iron will save you a lot of grief. I have a client who I've totally sold on the Guhring RT100R, getting roughly 25% better tool life than with the...
  30. I like Makino horizontals... what was your budget...

    I like Makino horizontals... what was your budget again? :)

    Totally agree with Rich on service. That's a big part of any machine tool purchase... hell, I guess a lot of things fit into that...
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