EMBROIDERY CNC: first completed work

Long time, long journey, started in 2012, a project semi-finished after six years was completed, and it took not more than one week to be operative: CNC Embroidery is now fully working!

Speed is still quite limited by torque of little Nema 17 stepper motor at high revolution speed of the flywheel. More or less actually the maximum speed is 200 stitches per minute, while I believe that with a bigger motor (Nema 23 with 430 oz in) I could reach a speed of 800 stitches per minute.




A short video of the machine running with sewing machine internals:




Cat size is approximately 3x2 cm (1.2" by 0.8")


Following some work in progress experiment:








Closeup, nice blue on white



Most of the work was related to thread tension requirements. The old machine had a lot of trouble to maintain the correct thread tension. After some disassembly and reassembly, I noted a spring was missing from the thread tensioning system, so a lot of knots and not well pulled sewing thread on the back. 

The (still not 100%) completed machine:





Frame tension setup to accomodate different kind of fabric








Frame tension spring


Entire setup




You will need one of these plastic foot to obtain a good sewing result

Brazed brass frame

Little motor, do your job!


You can find here previous posts, starting from 2012 (most in italian):
  1. CNC EMBROIDERY: Borletti, punti perfetti
  2. CNC EMBROIDERY: 100 € tondi tondi
  3. CNC EMBROIDERY: 100 € tondi tondi
  4. CNC EMBROIDERY: L'idea.
  5. CNC EMBROIDERY: Borletti, punti perfetti II
  6. CNC EMBROIDERY: Brasatura in corso
  7. CNC EMBROIDERY: Costruzione xy, parte I
  8. CNC EMBROIDERY: Costruzione xy, parte II
  9. CNC EMBROIDERY: Costruzione xy, parte III
  10. CNC EMBROIDERY: Costruzione xy, almost finished
  11. CNC EMBROIDERY: Costruzione xy, parte IV
  12. CNC EMBROIDERY: Costruzione xy, parte V
  13. CNC EMBROIDERY: sono arrivati i pezzi mancanti
  14. CNC EMBROIDERY: elettronica di controllo
  15. CNC EMBROIDERY: la base in legno
  16. CNC EMBROIDERY: la base in legno, parte II
  17. CNC EMBROIDERY: la base in legno, parte III
  18. CNC EMBROIDERY: il volantino in legno e la puleggia 
  19. CNC Embroidery. Elettronica di controllo II 
  20. EMBROIDERY CNC: Software completed




6 comments:

  1. We'd really like to cover your embroidery machine in The MagPi – official Raspberry Pi magazine. Please could you drop me a line at phil.king@raspberrypi.org? Thanks, Phil.

    ReplyDelete
  2. Woow! You did a great job with this project. I like it a lot! :)

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  3. Hi, congratulations, I think you want use AC Servo motor drive for your sewing machine head control & you want synchroniser upper stop position sensor for every stitch logic detection after moving your X,Y stepping motor, then you can control higher speed in your machine,,,,

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  4. Hi very good basic but it work i use to work in embrodery machine
    verry very good

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  5. Dear i study all your posts about this Embroidery machine but could not get the info ie. what type of files its support ie. *.DST or gcode to control the stitching, xy movement and needle movement, and status of the needle (up,down inside the fabric)
    Thanks

    ReplyDelete
  6. can you send me how to make this project ?
    thank you
    i like to make this!

    ReplyDelete