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  1. #106
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
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    781

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    Looking at something like this to move the router and fence: AU-Antibacklash-Ball-Screw-SFU1204-12mm-L250mm-Ballnut-BF-BK10-End-Machining

    There are some are very high precision units with a sealed bearing nut but about 3 times the price and not in the length I would require, so I'm thinking of getting one to see if it will do the job. You should only need a small stepper to drive the fence as it's running on 4 bearing blocks and should take nothing to move, I'm planning on having a fence lock in any case so holding torque won't be a problem, a lock will also overcome any concerns of the fence moving for any reason whilst working.

    Does anyone know of something better?
    Thoughts?

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  3. #107
    Join Date
    Feb 2016
    Location
    Canberra
    Posts
    5,124

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    Ever since I bought the fence upgrade to my Laguna SUV14" bandsaw (the Drift master) I've been wanting to use one of these to make a better one.

    There are a few out there that use 19mm threads and they look mighty indeed. The price has positively crashed since I started looking (3 years ago!!...)

  4. #108
    Join Date
    Jan 2014
    Location
    Sydney Upper North Shore
    Posts
    4,464

    Default

    Looks ideal and 6.5mm to 10mm couplings are readily available. Do you know what the lead is, as it doesn’t appear to be stated on the site?

  5. #109
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

    Default

    No idea of the screw lead, as noted it's not specified, but at least this will give me an idea of what is required and I can get something running for testing various mounting and drive ideas.

  6. #110
    Join Date
    Apr 2003
    Location
    Perth Western Australia
    Age
    90
    Posts
    783

    Default

    Wonderful table mode with a lot interesting technical material added. Looking forward to seeing the projects produced with it should be very interesting.
    Learn new Routing skills with the use of the template guides

    Log on to You Tube for a collection of videos 'Routing with Tom O'Donnell'

  7. #111
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

    Default

    Hi Tom, yes I'm sure those interesting projects will look the same as if made with a $30 router, a few clamps and an old cabinet door with a hole in the centre.

    I know some of us like to combine our various hobbies together, so apart of coming up with an R-table dust extraction design that produces zero dust and zero clean up, it's now the fun of adding automation and making something easier to use, so just another part of a slightly different but equally rewarding woodwork journey. In my case I get to combine three of my hobbies for this fun project.

    I can see the technical stuff and build ideas getting spread across the thread, so I think if we can get this to work as planned then I may have to consolidate the final complete build into a separate thread.

    Cheers.

  8. #112
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

    Default

    Success - I have the DRO sender running without it's display head. The "sender - slide" is connected to my Microprocessor with an off the shelf USB lead, no need to modify the DRO as it just plugs into the same socket on the sender as the existing supplied head readout.

    I wrote some code, was about to give up, but found the problem in the code right at the last try. Dam clock pulse to data ready timing is more critical than I thought.

    Now to code the conversion into MM and inches, but the data is 100% rock solid in tracking the sender movement. Also figured how they set ZERO on the slide.

  9. #113
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    7,696

    Default

    Great work Mike.
    CHRIS

  10. #114
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

    Default

    Thanks Chris, I forgot to add the "what it means" info for anyone not familiar with what were doing:

    What it means is this, we can connect two DRO units to the same Microprocessor controller that controls the Steppers. The Router height DRO and Fence DRO can be now be displayed together on the Micro-controller and its 5" or 7" touch screen, the Micro-controller can now move the Fence or Spindle to the exact value required using the DATA from the precision DRO sender. The OEM supplied DRO displays are no longer used.

  11. #115
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    7,696

    Default

    Now that sounds like my kind of gadget but can we buy the DRO read head and strip without a display or is that the wrong question?
    CHRIS

  12. #116
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

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    I've seen that asked a lot lately on the NET, the answer appears to be NO, for the cost of the units it's unlikely to make much difference on price going by the comments.

  13. #117
    Join Date
    Jan 2014
    Location
    Sydney Upper North Shore
    Posts
    4,464

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    Great progress!!
    What brand DRO units are you using?

  14. #118
    Join Date
    Nov 2013
    Location
    Caboolture QLD AU
    Posts
    781

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    The iGaging EASY-VIEW DRO from Timbecon in AU. I purchased a few when they released them on special, around $39 for the 300mm back then.

    Now displaying on 7" LCD in mm (same as OEM head unit) and it's a 100% stable reading with no averaging needed. Now that I've got position data, I just need to knock up a test stepper drive and DRO and test code the auto control. Then the time consuming task of writing the complete program for router table use for the micro and display. Very pleased at the moment.

  15. #119
    Join Date
    Feb 2016
    Location
    Canberra
    Posts
    5,124

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    Python MandJ ?

    Ive been doing a lot of Py recently and admit to enjoying it.

  16. #120
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    7,696

    Default

    That sound illegal!
    CHRIS

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