. .

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #17
    Quote Originally Posted by WoodKnot View Post
    WoodKnot's Frankenstein CNC - I like that!!

    Really Jazz - it'll be alright -

    Let it be! - you are making the plates and lets leave it at that - it will be what it will be.

    The Z Axis is very short and on the back of the X axis there is another piece of 4020 that is fastened to the back to run the cable track on.

    So, lets get the plates on and give it a go - you maybe surprised - it maybe ok?

    I did say maybe!

    WoodKnot
    Woodknot, I don't think you realize just what a mess this miss-match of parts puts the machine design in or the complications they cause.?

    Because the size of the rails and ball-screws were never designed to fit on this frame and profile style then things have to be moved into positions that are not ideal or good.
    For instance, the only way to fit the ball-screws is to now place them outwards of the gantry sides, this then leaves nothing to fasten the BK bearings onto, so we have to extend the endplates so brackets can be made which extend off at 90 degrees for the BK bearings to fasten onto.

    This while not being an ideal location having the screws hanging so far off to the side can easily be done in terms of making extended plates, however, the complications are how do we allow for alignment of the screw in both horizontal and vertical alignments and the fastening of the ball-nut mount on the gantry side.? Slots in the end plates and BK plate are the answer to allow adjustment.

    However, there's another issue that now the SFU mount is on the outside of the gantry which puts the SFU mounting bolts on the inside of the gantry which cannot be accessed when fastened to the linear bearings. We can't fasten the SFU bearing onto the gantry side before fitting it onto bearings because we need to align it to the ball screw.!

    These are just the issues with the Y-axis and I haven't even looked at the X or Z axis but again this mismatch of parts will place similar design complications.

    So maybe you can see I'm not talking about trying to design you a completely new machine that is super strong, the struggle is just making things fit together in a fashion that makes assembly possible and doesn't waste my time or yours making plates that don't work or fit.!

    I know you think it's simpler than it looks but honestly it's not, however, as you have found it's very easy to F-UP which I don't intend to do.! So please say now if you want me to continue or not because I haven't got time to waste making plates which don't work.!

    See pics to get some idea of the issues.

    Click image for larger version. 

Name:	pic1.jpg 
Views:	201 
Size:	111.1 KB 
ID:	30193Click image for larger version. 

Name:	pic2.jpg 
Views:	196 
Size:	276.9 KB 
ID:	30194Click image for larger version. 

Name:	pic3.jpg 
Views:	192 
Size:	242.1 KB 
ID:	30195
    Last edited by JAZZCNC; 08-07-2021 at 09:32 PM.
    -use common sense, if you lack it, there is no software to help that.

    Email: [email protected]

    Web site: www.jazzcnc.co.uk

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. OpenBuilds C-Beam machine
    By Lodds in forum Gantry/Router Machines & Building
    Replies: 3
    Last Post: 25-10-2020, 04:39 PM
  2. Will the openbuilds ox cut aluminium?
    By davejavu123 in forum OpenBuilds OX CNC Machine
    Replies: 5
    Last Post: 19-05-2019, 07:12 PM
  3. Turret style cylindrical cnc grinder build
    By SGG70 in forum Other Machines & Building
    Replies: 3
    Last Post: 19-12-2018, 02:00 AM
  4. SOLD: Openbuilds 3D CNC Router for sale
    By Leadhead in forum Items For Sale
    Replies: 0
    Last Post: 15-12-2018, 09:30 AM
  5. Anyone have info on OX CNC made by Probiotix openbuilds
    By totally useless in forum OpenBuilds OX CNC Machine
    Replies: 11
    Last Post: 16-06-2015, 02:16 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
  •