499,864 active members
5,709 visitors online
Register for free
Login
Page 30 of 30 20282930
Results 349 to 358 of 358
  1. #349
    Registered
    Join Date
    Mar 2011
    Posts
    217

    Re: Best belt drive ever! (If I do say so myself)

    Also, how much down pressure is required between the idler rollers and the belt?
    Thanks

  2. #350
    Quote Originally Posted by tkms002 View Post
    Also, how much down pressure is required between the idler rollers and the belt?
    Thanks
    In answer to your previous question, yes the belt needs to be captured with side walls, flanges on the pulley or idlers do not work. As far as pressure between the idlers on the stack of two belts, no, no pressure. Close to zero clearance is best.
    Mike Visit my projects blog at: http://mikeeverman.com/
    http://www.bell-evermannews.com/ http://www.bell-everman.com

  3. #351
    Registered
    Join Date
    Mar 2012
    Posts
    61

    Re: Best belt drive ever! (If I do say so myself)

    In my building gantry router cnc machine, 3 axis are through the timing belt drive connections to the ballscrews. No solid solution to the little non-synchronization between gantry drives or backlash are there then. May be the using of glass scale encoder is a solution. But it cannot be implemented in Mach3 environment under servo or stepper motor drive conditions. Presently, no step down gear ratio are used between the timing belt pulleys(Is it better than using small pinion to a large gear in term of backlash amount??). Two 32 teeth are linked with MT5 belt. Wider belt is more preferable in that case as well. Thanks.

  4. #352
    Registered
    Join Date
    Mar 2011
    Posts
    217

    Re: Best belt drive ever! (If I do say so myself)

    Has anybody ever implemented Mike's system by forming the bottom "belt" from epoxy using a real belt as a mold?

  5. #353
    Community Moderator ger21's Avatar
    Join Date
    Mar 2003
    Posts
    33422

    Re: Best belt drive ever! (If I do say so myself)

    I've seen a router where the bottom belt profile was machined into aluminum.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  6. #354
    Registered
    Join Date
    Mar 2011
    Posts
    217

    Re: Best belt drive ever! (If I do say so myself)

    Quote Originally Posted by ger21 View Post
    I've seen a router where the bottom belt profile was machined into aluminum.
    now if I only had a mill with the correct profile cutter. That would be the best way to go I would think

  7. #355
    Neuer Benutzer
    Join Date
    Jan 2013
    Posts
    69

    Re: Best belt drive ever! (If I do say so myself)

    Quote Originally Posted by tkms002 View Post
    now if I only had a mill with the correct profile cutter. That would be the best way to go I would think
    I personally think that would not be an improvement. If the lower belt wears enough that you need to change it out that would take 20 minutes. If the aluminum wears out how long will it take to change it out? Especially if you have to mill the aluminum first. T5 belt is so inexpensive it makes no sense to reinvent the wheel! Go with a wider belt if you think you need more ability to handle the force.

  8. #356
    Community Moderator svenakela's Avatar
    Join Date
    Mar 2004
    Posts
    1651

    Re: Best belt drive ever! (If I do say so myself)

    Quote Originally Posted by tkms002 View Post
    Has anybody ever implemented Mike's system by forming the bottom "belt" from epoxy using a real belt as a mold?
    Ha ha ha! First time I check this thread in a long time and this is what I read.
    Yes I did exactly that. Super simple setup, I even made it on a table as a base. I put some tension on the belt and made sidewalls leaving a few mm space. Then poured and it worked really well.

  9. #357
    Junior Member
    Join Date
    Jan 2011
    Posts
    28

    Re: Best belt drive ever! (If I do say so myself)

    Quote Originally Posted by svenakela View Post
    Ha ha ha! First time I check this thread in a long time and this is what I read.
    Yes I did exactly that. Super simple setup, I even made it on a table as a base. I put some tension on the belt and made sidewalls leaving a few mm space. Then poured and it worked really well.
    Interesting, I was thinking about doing this last year. Never got to it.
    Which epoxy did you use? I assume you greased or waxed the belt before pouring? Which belt?

  10. #358

    Join Date
    Apr 2019
    Posts
    1
    Oh believe me. It`s not worth time and money on such belts. I`m working in such town as Vegas and the good body is the pass to good work. You can read my blog https://bovegas.com/blog/casino-wiki...-in-australia/ about work in such gamblers towns and you know that I know what to have a good body. Such belts do nothings. Only Physical trainings will help you.

  11. #359

    Re: Best belt drive ever! (If I do say so myself)

    Funny, I do not get alerts for this thread or I would have chimed in!
    So, with regard to molding the base teeth, I too have done this, and the first discovery was that clearance is needed to allow the very slight pitch changes of the upper belt, from belt to belt. It will mesh with an upper belt over a short distance, or sometimes a long distance, but not reliably, belt run to belt run. Clearance is needed. So, you need to replicate the base belt complete, which adds another step and for a one-off, not worth making a mold.
    For me, having base belt sections that are molded would be a good thing, but has not yet become essential. VHB to hold base belting down is great stuff if you use it right.

    Either way, when I make a mold, it will be cut metal, and geometrically will make base teeth the same as the belting. Some features, though, like the little groove in the bottom of the groove, aid in getting air out of the mesh, reducing noise, and are a complication that would be solved well by replication..

    ding, the more you know..
    Mike Visit my projects blog at: http://mikeeverman.com/
    http://www.bell-evermannews.com/ http://www.bell-everman.com

Page 30 of 30 20282930

Similar Threads

  1. Belt drive or direct drive?
    By VegasRhino in forum General Full 3D Metal Milling Machines
    Replies: 4
    Last Post: 10-10-2013, 12:12 PM
  2. Direct Drive Vs Belt Drive for a Mill/Drill Retrofit?
    By pfeist in forum Uncategorised MetalWorking Machines
    Replies: 11
    Last Post: 02-13-2012, 09:12 AM
  3. X2 belt drive
    By eartaker in forum Benchtop Machines
    Replies: 5
    Last Post: 07-07-2010, 08:26 PM
  4. Belt drive or direct drive?
    By rholliday in forum Uncategorised MetalWorking Machines
    Replies: 2
    Last Post: 02-17-2009, 12:21 AM
  5. Need Sherline Belt & qestion on X2 Belt Drive?
    By Oldboy in forum Benchtop Machines
    Replies: 12
    Last Post: 03-06-2008, 07:42 AM

Tags for this Thread

Posting Permissions

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