. .
Page 8 of 21 FirstFirst ... 67891018 ... LastLast
  1. #71
    I placed mine as high as I could to get stability but as low as possible to get the travel distans I wanted :)
    The further apart you have them creates less leverage on the bearings, more even load..

    Skickat från min SM-G955F via Tapatalk

  2. The Following User Says Thank You to Nr1madman For This Useful Post:


  3. #72
    Hi All,


    I would like your opinions on the following.

    Since my Y axis ballscrew is at the rear off the gantry, i have to make a choice.

    Have the fixed end of the cable chain and ball screw inside the z-axis assembly or out side.

    Like this or that:

    Click image for larger version. 

Name:	Gantry CableChainLocation 2.png 
Views:	284 
Size:	265.9 KB 
ID:	23665Click image for larger version. 

Name:	Gantry CableChainLocation.png 
Views:	270 
Size:	264.1 KB 
ID:	23666

    The chain would rest on top the gantry with a simple L support screwed to the back of the gantry to allow for a chain wide enough.
    Moving end of chain would connect to the top z assembly plate near the nema

    I feel keeping the box that surrounds gantry as small as possible, is best for rigidity.

    On the other hand i would not have to make a separate floating support system for the cable chain.
    Adding more weight and vibration.

    Also i think having it on inside would look much better.



    Grtz Bert.

  4. #73
    Hi Bert,

    Personally structural integrity wins over cable routing every time. So I would go with the image on the left with the closer ballscrew connection. Then make the neatest job of mounting the cable chain on the back. Wouldn't worry about weight and vibration of the extra support bracket holding the cable chain.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  5. The Following User Says Thank You to routercnc For This Useful Post:


  6. #74
    Make all drag chains Horizontal, not Vertical. And use bigger that you think what will work.
    project 1 , 2, Dust Shoe ...

  7. The Following User Says Thank You to Boyan Silyavski For This Useful Post:


  8. #75
    Hi guys,


    I have found a supplier for 7075 rolled sheet.

    Will rolled 7075 be flat enough for z assembly plates.

    I do have an automotive cilinderhead grinder option if it pans out to be unflat.

    Or would ground 5083 be the better choice..

    In a small volume and suppliers compared not much price difference..


    I am really drawn to the 7075 for the obvious reasons


    Grtz Bert

    Verstuurd vanaf mijn SM-A320FL met Tapatalk

  9. #76
    Finally progress, found a good source for 7075 milled both sides, so ordered z plates...


    Need to decide on steppers now and htd pully and belts size.


    Grtz Bert.




    Verstuurd vanaf mijn SM-A320FL met Tapatalk

  10. #77
    Parts for z axis arrived today.

    Looks like i have stuff to do this weekend :-)

    Grtz Bert.



    Verstuurd vanaf mijn SM-A320FL met Tapatalk

  11. The Following User Says Thank You to driftspin For This Useful Post:


  12. #78
    Hi guys,


    I have question.

    I ordered c7 ballscrews from Fred with the higher spec bf bk bearings.

    There are spacer rings included. those are smaller then expected. id the ring is ok, od is smaller then the dust seals of the bearing block... by about 2 mm.


    Do i need seals on the angular bearings?

    If so... i will contact Fred for new rings.



    Verstuurd vanaf mijn SM-A320FL met Tapatalk
    Last edited by driftspin; 01-03-2018 at 05:58 PM.

  13. The Following User Says Thank You to driftspin For This Useful Post:


  14. #79
    No worries , you are fine!
    I have the manual for those bearings but it seems that I can not attach it here, if you want it send me your email with pm.
    Last edited by Nickhofen; 01-03-2018 at 05:55 PM.

  15. The Following User Says Thank You to Nickhofen For This Useful Post:


  16. #80
    Quote Originally Posted by Nickhofen View Post
    No worries , you are fine!
    I have the manual for those bearings but it seems that I can not attach it here, if you want it send me your email with pm.
    These are the fixed end bearings.

    Took the lid of..

    7002 atyn df p5 -5/-5 germany x cy-0780

    Opinions?


    Grtz. Bert

    Verstuurd vanaf mijn SM-A320FL met Tapatalk
    Last edited by driftspin; 05-03-2018 at 10:24 PM.

Page 8 of 21 FirstFirst ... 67891018 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. BUILD LOG: First time build - Steel Frame CNC Router
    By examorph in forum DIY Router Build Logs
    Replies: 144
    Last Post: 19-10-2023, 06:25 PM
  2. BUILD LOG: First Build 5 x 12 Steel Frame CNC router
    By Scott Damman in forum DIY Router Build Logs
    Replies: 104
    Last Post: 18-01-2017, 06:36 PM
  3. BUILD LOG: Steel frame cnc router design/build
    By CraftyGeek in forum DIY Router Build Logs
    Replies: 110
    Last Post: 06-05-2015, 10:00 PM
  4. 600x900 Steel welded router build
    By embraced in forum Gantry/Router Machines & Building
    Replies: 7
    Last Post: 08-10-2014, 10:55 PM
  5. BUILD LOG: First steel diy CNC router build
    By ivars211 in forum DIY Router Build Logs
    Replies: 59
    Last Post: 28-07-2014, 08:29 PM

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
  •