Gear set for M13x1
Close
Login to Your Account
Likes Likes:  0
Results 1 to 9 of 9
  1. #1
    Join Date
    Apr 2019
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    1
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default Gear set for M13x1

    I have an older Atlas craftsman 10127440 and am wanting to thread M13x1. The question i have is what gear combo do i need or how do i figure this out?
    I know i need a 127 and 100 to convert the sae lead screw to metric.

    Thanks in advance

  2. #2
    Join Date
    Jan 2006
    Location
    Texas
    Posts
    482
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    55

    Default

    You need to ask this question here: General

    RWO

  3. #3
    Join Date
    Dec 2012
    Country
    AUSTRALIA
    Posts
    2,585
    Post Thanks / Like
    Likes (Given)
    10
    Likes (Received)
    803

    Default

    Thinkee Atlas Craftsman is a bit of a no no over there.Im thinkee a hobby machining forum with a dedicated Craftsman spot might be less traumatic to the OP.............incidentally ,any old machining book will have a formula for calculating any lead ,and in this day and age ,we wont make mistakes with the arithmetic ,cause we will use a calculator.

  4. #4
    Join Date
    Jul 2004
    Location
    Houston, TX USA
    Posts
    30,446
    Post Thanks / Like

    Default

    You'd jump way ahead on viability of your threads at Practical Machinist if you omit the A and C word as to make of lathe

    If you know you need the 1.27 : 1 compound, then a tiny bit of math will show you that 20 TPI (which is .050" lead) gets you a.03937" lead which is ONE MM for your M13

    To show the simple math:

    .050 / 1.27 = .03937

    And by extension... 10 TPI gets you 2mm and 40 TPI gets you a half a mm....among others
    Last edited by johnoder; 04-26-2019 at 09:22 AM.

  5. #5
    Join Date
    Dec 2010
    Location
    Mifflintown, PA 17059
    Posts
    1,808
    Post Thanks / Like
    Likes (Given)
    20
    Likes (Received)
    212

    Default

    If you look in the machinist handbook it will give the formulas to calculate any metric or inch threads on any lathe.

  6. #6
    Join Date
    Nov 2004
    Location
    RC, CA
    Posts
    1,985
    Post Thanks / Like
    Likes (Given)
    211
    Likes (Received)
    380

    Default

    A more reasonable sized set of gears to get you close enough. There's another that is very close as well.

    Metric Threading

  7. #7
    Join Date
    Sep 2010
    Location
    moscow,ohio
    Posts
    6,073
    Post Thanks / Like
    Likes (Given)
    592
    Likes (Received)
    1964

    Default

    hell, if it's a short thread work out the lead for say,24 or 26tpi...

  8. #8
    Join Date
    Feb 2001
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    2,218
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    353

    Default

    1 mm pitch is 25.4 TPI so 25 TPI would be better if your machine will do it.

  9. #9
    Join Date
    Sep 2010
    Location
    moscow,ohio
    Posts
    6,073
    Post Thanks / Like
    Likes (Given)
    592
    Likes (Received)
    1964

    Default

    since the Atlas gearbox includes 30tpi you can use 52/44 in place of the 48/48 gear set to have all the common metric pitches.

    sacifices only the coarsest range of threads and is cheap an easy...slide a gear and adjust banjo.

    there is an explanation on the lathes uk site.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •