. .
  1. #1
    A few months back I drew up a TTS/R8 style spindle to make sure the machine I am building would allow me to upgrade should I decide to go that way. Here is an overview of the basic parts:

    Click image for larger version. 

Name:	spindle.jpg 
Views:	602 
Size:	61.8 KB 
ID:	22250

    I'm probably 6 months away from building this, if I ever do, but Chaz asked for more info about it recently so here are a few sketches and the key parts as IGES files (see attachment). Fusion 360 can read these no problem so you can have a look.

    Click image for larger version. 

Name:	spindle_drawing.jpg 
Views:	1742 
Size:	214.3 KB 
ID:	22251

    Click image for larger version. 

Name:	spindle_section_detail.jpg 
Views:	1019 
Size:	200.0 KB 
ID:	22252

    I drew this quite quickly and have not spent time on the details - for example there is no labyrinth seal at the bottom of the spindle to stop the swarf getting into the bearings. Also the upper bearings are a simple sliding fit in the housing to allow for expansion but some designs have a wavy washer to allow movement but keep a small pre-load to prevent the bearing chattering.
    For info I was planning to run it off my WC spindle via pulley(s).

    Anyway here it is, maybe it will give you a place to start or some ideas.

    Some of the advantages of this system are:
    1. Pulley driven so allows step down of speed, step up of torque
    2. Lower speed and higher torque allows larger diameter tools to hog material away
    3. Option to add a power draw bar for quick tool changes (air cylinder arrangement squeezes the draw bar against the spindle shaft to push the collet out)
    4. Uses an off-the-shelf R8 collet (3/4")
    5. Uses an off-the-shelf TTS holder
    6. Main body is 80 mm diameter so could drop into standard WC spindle mount
    7. Tools remain in TTS holder which references against a shoulder when fitted so Z height is known

    This is what it would look like in my Z axis:
    Click image for larger version. 

Name:	ren62_Zaxis.jpg 
Views:	651 
Size:	128.9 KB 
ID:	22254
    Attached Files Attached Files
    Last edited by routercnc; 23-07-2017 at 09:05 PM.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  2. The Following 3 Users Say Thank You to routercnc 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. RFQ: Semi automatic welding system Linear beam control system
    By richway in forum Projects, Jobs & Requests
    Replies: 0
    Last Post: 24-01-2017, 07:54 PM
  2. Gerber system 48
    By martin54 in forum Milling Machines, Builds & Conversions
    Replies: 67
    Last Post: 13-09-2013, 11:35 AM
  3. My Coolant System
    By Tenson in forum Swarf & Chip Management
    Replies: 6
    Last Post: 08-04-2013, 12:59 PM
  4. Diy Self Leveling System
    By Ricardoco in forum Gantry/Router Machines & Building
    Replies: 19
    Last Post: 17-07-2012, 10:12 PM
  5. (Video) Water spindle cooling system
    By jafc76 in forum General Discussion
    Replies: 0
    Last Post: 30-12-2011, 01:31 PM


Posting Permissions

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