584,862 active members*
5,349 visitors online*
Register for free
Login

Search:

Type: Posts; User: Nzoldun

Search: Search took 0.00 seconds.

  1. Replies
    185
    Views
    29,355

    Poll: Machinist Training

    10,000 hours apprenticeship 1955-60
  2. Replies
    12
    Views
    1,621

    Contact Stresses

    If you can find a copy of Advanced Mechanics of Materials by Seely & Smith (Wiley publication - my copy -circa 1970's) it has a chapter thoroughly covering this topic.

    NzOldun
  3. Replies
    2
    Views
    2,098

    G540 and SmoothStepper

    Has anyone run a g540 with smooth stepper under Mach3?

    I have the two connected up and they appear to be 'lighting up' OK, but the RESET button on the screen won't work and if 'clicked' too...
  4. Your 'open' section for the column will twist...

    Your 'open' section for the column will twist quite a bit when the cutting forces come in to play, especially since your cutting head looks to be a good way from the vertical centre-line of the...
  5. If you are going the rigid way, alignment is...

    If you are going the rigid way, alignment is absolutely critical. Drill your hole undersize, BORE with a boring bar and then ream. Machine O.D. after, then part-off.
    Only way to ensure bore and od...
  6. Replies
    7
    Views
    1,818

    Hey Guys, We're forgetting very important...

    Hey Guys,

    We're forgetting very important point here.

    The Southbend was designed when High Speed Steel was 'king of the hill'

    With the advent of carbide tipped tools, particular todays wide...
  7. Thread: Steel Spec.

    by Nzoldun
    Replies
    6
    Views
    1,115

    EN8 Steel

    I have some technical data on EN8 (circa 1962). Can you wait 'till Monday so I can retrieve the book from my office at work?

    Grant Notley
    [email protected]
  8. Replies
    21
    Views
    3,206

    To make sure a reamer cuts to size, the hole...

    To make sure a reamer cuts to size, the hole should be drilled ~1/32" undersize and then bored untll ~ 0.012 - 0.020 is left to take out with a machine reamer. The reamer will then be exactly on...
  9. X3 conversion to CNC

    Somewhere on the forums is a link to the articles (description and photos) by Dick Stephen on his take on the convesion of the X3. I believe it can also be accessed through the CNC4PC site. Might...
  10. Replies
    11
    Views
    1,436

    Have a look at the Gleason site and their 275 HC...

    Have a look at the Gleason site and their 275 HC spiral bevel pinion generator video - this for very high volume production - the maths must be mind boggling!

    Then all you have to do is figure out...
  11. Sorry Guys, Have to disagree with all of you. ...

    Sorry Guys,
    Have to disagree with all of you.

    The single biggest advance in machining over the last 50 years has to be the Personal Computer!

    I started my apprenticeship in the days of the...
  12. Hardiplank was originally an asbestos-cement...

    Hardiplank was originally an asbestos-cement product, although the base fibre (asbestos) was replaced by a non toxic mineral fibre, some twenty odd years ago. If machined at all, can be ground wet...
  13. Replies
    7
    Views
    1,631

    Unless your angle is loaded through the 'Shear...

    Unless your angle is loaded through the 'Shear Centre', it will twist as well as deflect vertically. The amount will depend on how the ends of the angle are supported at the ends - 'simple' or...
  14. Replies
    48
    Views
    8,468

    Surface Plate

    Step 1:- Buy an old, machined surface only, cast iron surface plate of the size you need.

    Step 2:- Using your granite surface plate as a master and 'marking' blue, hand scrape the C.I. plate until...
  15. Replies
    5
    Views
    2,033

    Need Help Can anyone help with the wiring...

    Need Help
    Can anyone help with the wiring sequence for a SLO_SYN M062-BD-/801 stepper motor. The phases appear to be whit/red stripe, green stripe/black stripe, green/ornage and red black, (stripes...
  16. Replies
    21
    Views
    3,210

    Oxford, Only just lucked on to this thread. ...

    Oxford,

    Only just lucked on to this thread.

    There was a most imformative set of three articles in the British "Model Engineers Workshop" on the conversion of an X3 to CNC, from Nov. 2004,...
  17. Replies
    21
    Views
    830

    CNC Torque requirements

    RaynorJ. There is an excellent set of articles in the Uk magazine "Model Engineers Workshop", approx. Oct 2005 to March 2006. As I am also based in NZ, central North island, you might like to...
  18. Replies
    3
    Views
    730

    Mill Conversion

    Chris,

    I've just received 16 mm x 2.5 mm ballscrews from "Marchantdice" in the UK

    Although listed as rolled , they look like ground, as the finish is so good.

    Took about two weeks to get...
  19. Replies
    90
    Views
    11,865

    There is an extremely good series of three...

    There is an extremely good series of three articles in the UK magazine "Model Engineers Workshop", issues 102, 103 and 104, in 2005, which cover the basics of the choice of steppers, sized to match...
  20. Replies
    27
    Views
    3,599

    At that size and pressure, I can guarantee that...

    At that size and pressure, I can guarantee that your unit would be a (legal) pressure vessel and would have to meet statutory requirements.

    I'm not absolutely sure, particularly in regards to...
  21. Replies
    2
    Views
    1,011

    Z-axis mill drive

    Newbie to the site. Has anyone tried using the fine down-feed on a mill-drill as the Z-axis CNC? My mill spindle is heavily spring biased upwards - it requires about 750 oz-ins on the main lever...
  22. Replies
    17
    Views
    3,756

    Gear Hobbing

    The magazine you need is issue 108 of thr (UK) Model Engineers Workshop, pp30-34. If you cannot obtain it in Aus., send me your e-mail address. I will help if I can!
Results 1 to 22 of 22