. .
  1. #1
    I am in the middle of my second build. I’m going for a long Z axis 500mm. 1500 x 1500 table. The z axis is getting pretty heavy. (might start a build log)

    I bought 4:1 HTD reduction belt and pulleys to give the Nema 24 566oz in a bit of extra torque to assist the Z. The X, A and Y also have 4:1 HTD reduction units. However I now realise i’m slowing the whole feeds and speeds down with reduction on the Z. The first machine was 1:1 throught

    Just looking for suggestions about other solutions before make up the nema bracket and fitting it today.

    Thanks

    ps got the 2DM556 drivers set on 3.8 Amps Half Current 1/10th Microstep for the 4Nm steppers perhaps could change the these settings

  2. #2
    What are you using to move the Z axis? Ballscrew? What pitch? How much weight are we talking about?
    Gerry
    ______________________________________________
    UCCNC 2022 Screenset

    Mach3 2010 Screenset

    JointCAM - CAM for Woodworking Joints

  3. #3
    Quote Originally Posted by Ger21 View Post
    What are you using to move the Z axis? Ballscrew? What pitch? How much weight are we talking about?
    RM1605 C7 650mm ballscrew
    700x150x12.7 alu plate for the Z travel
    HG20 rails mounted on that plate
    2.2kw air spindle
    approx total weight for travel plate, rails and spindle 12kg

    pic without guide blocks or travel plate
    Click image for larger version. 

Name:	gantry.jpg 
Views:	164 
Size:	332.4 KB 
ID:	24715

  4. #4
    I'd use 1:1
    Gerry
    ______________________________________________
    UCCNC 2022 Screenset

    Mach3 2010 Screenset

    JointCAM - CAM for Woodworking Joints

  5. The Following User Says Thank You to Ger21 For This Useful Post:


Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Enhanced Ox CNC and Spindle RPM reduction issue
    By TheMike in forum Gantry/Router Machines & Building
    Replies: 3
    Last Post: 12-10-2015, 07:54 PM
  2. Z axis question
    By martin54 in forum Gantry/Router Machines & Building
    Replies: 0
    Last Post: 15-02-2014, 05:07 PM
  3. Screw Dive Size Reduction ??
    By manofgresley in forum Gantry/Router Machines & Building
    Replies: 0
    Last Post: 04-09-2013, 05:34 PM
  4. TB6560 auto current reduction
    By Mjolinor in forum Motor Drivers & Controllers
    Replies: 1
    Last Post: 08-12-2011, 09:53 PM
  5. Motor size 23' and 2/1 reduction for Z axe on SX3 retrofit.
    By A2P in forum Linear & Rotary Motion
    Replies: 0
    Last Post: 15-09-2010, 05:14 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
  •