Welcome to Our Community

Unlock hidden features. Sign Up for Free Today!

Need tough OpenRail compatible V-Wheels.

Discussion in 'Announcements' started by mirage335, Oct 3, 2014.

  1. mirage335

    mirage335 Well-Known
    Builder

    Joined:
    Jan 7, 2014
    Messages:
    16
    Likes Received:
    3
    Ordered some polycarbonate wheels for HacDC's Optical Table Robot. Unfortunately, they only fit V-groove extrusions, while I greatly prefer the flexibility of OpenRail.

    As this is a high-precision large-scale machine, obviously, these wheels need to be rigid. . Definitely prefer not to use delrin wheels. However, the hard coat OpenRail seems discontinued, and the steel wheels supposedly depended on on it.

    Is that still the case? What is the best solution available for OpenRail users?
     
  2. Rob Taylor

    Rob Taylor Veteran
    Builder

    Joined:
    Dec 15, 2013
    Messages:
    139
    Likes Received:
    28
    This is definitely relevant to my interests.

    Are there any plans for hard coat V-Slot? That would have been ideal for the project I'm currently working on designing. If there was, what would be the load rating on that using steel V-wheels?
     
  3. Mark Carew

    Mark Carew OpenBuilds Team
    Staff Member Resident Builder Builder

    Joined:
    Jun 28, 2013
    Messages:
    1,817
    Likes Received:
    919
    Lyrad likes this.
  4. mirage335

    mirage335 Well-Known
    Builder

    Joined:
    Jan 7, 2014
    Messages:
    16
    Likes Received:
    3
    Thank you, appreciate commitment to maintaining high-quality products. The 25lbs rating is also immensely helpful.
     
  5. Rob Taylor

    Rob Taylor Veteran
    Builder

    Joined:
    Dec 15, 2013
    Messages:
    139
    Likes Received:
    28

    While I'm putting the mill on ice for a while (cost!) and moving towards simple laser cutting and 3D printing, I'm still interested in how I'll eventually provide guidance in subtractive manufacturing. How do the polycarb wheels stack up against, say, 15mm supported linear slide bearings? 150lb (25x6) doesn't seem like a lot for the forces of metal milling, but I might be wrong.
     
  6. Mark Carew

    Mark Carew OpenBuilds Team
    Staff Member Resident Builder Builder

    Joined:
    Jun 28, 2013
    Messages:
    1,817
    Likes Received:
    919
    Hello @Rob Taylor
    I found some information that may be useful.
    to help calculate cutting force

    1) what is maximum horsepower? usually a motor is about 800 watts per continuous hp, ok lets say 1 hp machine at close to stalling motor

    1 hp x 33000 ft lbs per min / SFPM (surface feet per minute of cutter)

    so lets say a router cutting aluminum at 1000 sfpm

    1*33000/1000= 33lbs of force

    at slower speed of 100 sfpm
    1*33000/100 = 330 lbs

    at really slow speed of 10 sfpm
    1*33000/10 = 3300 lbs
     
    Rob Taylor likes this.

Share This Page

  • About Us

    The OpenBuilds Team is dedicated helping you to Dream it - Build it - Share it! Collaborate on our forums and be sure to visit the Part Store for all your Building needs!
  • Like us on Facebook

  • Support Open Source FairShare Program!

    OpenBuilds FairShare Give Back Program provide resources to Open Source projects, developers and schools around the world. Invest in your future by helping others develop theirs!

    Donate to FairShare!