Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: Clive603

Page 1 of 60 1 2 3 4

Search: Search took 0.03 seconds.

  1. Limiting factor on stiffness in cut for a...

    Limiting factor on stiffness in cut for a Bridgeport is the quill. With the quill locked up solid it can safely use more power but you have to pay more attention to what cutter you are using. Big...
  2. Well that name is a blast from the past. Not the...

    Well that name is a blast from the past. Not the original Motorun company based in Teddington who made the one I had but assuming its all basically the same circuit you appear to have a static phase...
  3. As far as spindle power capability is concerned...

    As far as spindle power capability is concerned figures I found for lower speed applications of 30 taper are Max RPM 6000, Cont torque 18Nm, Peak Torque 80Nm. Which probably comes out at something...
  4. Replies
    10
    Views
    514

    You don't mention what machine you are using but...

    You don't mention what machine you are using but the power feed stops on my Bridgeport aren't repeatable enough to give DRO level accuracy. Probably inherent with any system that relies on a spring...
  5. Thread: thread chart

    by Clive603
    Replies
    5
    Views
    498

    Andy Glad you are sorted now. Whole thing...

    Andy

    Glad you are sorted now. Whole thing would be a darn sight clearer if they'd put a bit more information on the untabulated lever positions like C (mm pitch), W (tpi) and Y (feeds). If I had...
  6. Replies
    20
    Views
    1,196

    I think Thunderjet is optimistic. On a skinny...

    I think Thunderjet is optimistic. On a skinny piece like that machine a bit, stick out a bit further and machine more pretty much guarantees that it will climb over the tool and go prestzel before...
  7. Thread: thread chart

    by Clive603
    Replies
    5
    Views
    498

    We really need pictures but, assuming it is what...

    We really need pictures but, assuming it is what it appears to be, knock off of the Colchester Triumph 2000 speed and gearbox controls the system is pretty much as follows. Sorry for any errors...
  8. Pyrex Apologies for confusion. My fault I...

    Pyrex

    Apologies for confusion. My fault I should have dug out a manual rather than relying on memory as to how the thrusts were handled. Was thinking of wrong breed of machine.

    Don't have a...
  9. As I recall matters its a labyrinth seal on the...

    As I recall matters its a labyrinth seal on the spindle. Basically grooves and close fit pull the oil back. Effective when new or not too old. Usual reason for leaks is build up of crud in the...
  10. A closely related gotcha is the pent-up demand...

    A closely related gotcha is the pent-up demand effect which can seriously distort everyones, including a big, experienced distributor, perception of what the real, sustainable market is.

    Suppose...
  11. Replies
    21
    Views
    1,657

    If 40 + year old memory is correct the somewhat...

    If 40 + year old memory is correct the somewhat similar coil winder we had in the electronics lab had a taper shaft and with a variety of carriers to suit different sizes of ferrite and other...
  12. Replies
    6
    Views
    10,779

    I have a PDF version. PM me your E-Mail address...

    I have a PDF version. PM me your E-Mail address if you'd like a copy. Away from home at the moment tho' so won't be before Sunday or Monday at earliest.

    Clive
  13. My experience with high loads on casters suggests...

    My experience with high loads on casters suggests those wheels are on the narrow side.

    The four on my shop made heavy duty dolly are around 2 1/2" diameter and perhaps 3" wide. (Unfortunately I'm...
  14. Replies
    10
    Views
    945

    Far as I can see all the decent modern DRO...

    Far as I can see all the decent modern DRO systems have multiple zero setting memories which will probably do what you want. My old Sino system, a lower end workshop grade device but perfectly...
  15. Replies
    15
    Views
    1,104

    These days its arguable you don't actually have a...

    These days its arguable you don't actually have a proper business if you are running things in "on condition" manner rather than specified life.

    Clive



    Details are going to differ for every...
  16. Replies
    15
    Views
    1,104

    Yup and, like all such items in manufacturing...

    Yup and, like all such items in manufacturing use, should have a specified life and be changed out when they run out of hours. Obviously life depends on application so it may well make sense to...
  17. Replies
    23
    Views
    2,139

    Yup. Operated on by unqualified surgeon. 5/8...

    Yup. Operated on by unqualified surgeon.

    5/8 - 11 thread suggests it started out as an NT 40 series. Which is sensible for a head that size. Turned down depth at the end looks about right for...
  18. Given the relatively lightweight appearance I...

    Given the relatively lightweight appearance I guess its not something that has to be super strong. Have you considered adhesive bonding with suitable sheet strengthening glued'n screwed on...
  19. Replies
    4
    Views
    411

    Further to what Ted says if its a true native...

    Further to what Ted says if its a true native metric machine, whether by conversion or original delivery, the feed screws on cross and top slides will also be metric. If they and the tailstock feed...
  20. Replies
    24
    Views
    1,842

    Big advantage of magnetic scales is that they are...

    Big advantage of magnetic scales is that they are slim and slender. Especially if bought in "tape" form. Read heads are small too although, objectively rather larger than they need be. This lets...
  21. Replies
    86
    Views
    8,458

    Assuming it wasn't made by pure finance theory...

    Assuming it wasn't made by pure finance theory bean counters with no understanding of hardware realities outsource to China decision could have been made because:-

    1) The firm has run into the...
  22. Replies
    24
    Views
    1,842

    Another vote for Allendale / M-DRO. Bought a...

    Another vote for Allendale / M-DRO.

    Bought a Sino SD2MS 3 axis set from them maybe 12 to 15 years ago for the Bridgeport I'd just picked up. Still going strong. Came with a rewritten, English...
  23. Mix of Linley style Jig Borer and Mill. Looks to...

    Mix of Linley style Jig Borer and Mill. Looks to be basically bigger brother to Myford VMB. Short travel quill in housing that can be slid up and down the main column then locked in place.

    Going...
  24. Replies
    30
    Views
    8,950

    Bazukka That is a standard manual Bridgeport. ...

    Bazukka

    That is a standard manual Bridgeport. No power feeds to the table, you have to turn the handles.

    Clicvw
  25. Stepping up will almost certainly kill the...

    Stepping up will almost certainly kill the outside edge of the drill. Especially in a heavy duty cordless drill. Fundamentally its a question of stability. when stepping up only the very end of the...
Results 1 to 25 of 1500
Page 1 of 60 1 2 3 4