I only went for more idlers to keep the belt beneath the extrusion...maybe I'll have a re-think.
On a side note, starting to look at my electronics setup. I think these motors look reasonable?: SY60STH86-3008*
Printable View
I only went for more idlers to keep the belt beneath the extrusion...maybe I'll have a re-think.
On a side note, starting to look at my electronics setup. I think these motors look reasonable?: SY60STH86-3008*
I've gone with your suggestion Dean but kept the slots in the plates so I've got flexibility in the future.
The cover needs work but looks like this now. It's starting to feel like the ends in sight!
Attachment 16996Attachment 16997
Word of warning before commiting fully to this route.? Make sure you can buy a long enough belt of the shelf other wise it means having custom length belts made. Not a Big issue but still worth thinking about now.
The available belt lengths may also mean changing the location of the tensioners so work out the belt length needed for how you have it drawn now and see if belts are available that will work.
Oh Happy new year.!
Belt comes in at ~1.56m. Ive used this place a few times and they have belts up to 2.5m:
http://www.beltingonline.com/5mm-htd...ifo3qcvkih53b6
Happy new year everyone! :)
Happy new year chaps
reading this and the recent thread on controllers is tempting me back to the 3 stepper and belt option! I can feel another redesign coming on for 2016. Good luck Looking forward to seeing this project become a reality...
Jazz, is there enough engagement on the top right pulley? What's the minimum? you could add one more like this?? I Attachment 17005
The spec. for HTD belts say make sure to have 5 teeth engaged. This is based on ensuring that with a sufficiently high load, the belt will snap instead of the teeth ripping off. This hardly matters to us, as we're not using the belts at close to their load ratings, however we do want to get good stiffness from the belts (especially with such a long best) so it seems a reasonable baseline to design for at least 5 teeth engaged.
Thanks for the info. With a 20T pulley I should have around 5 teeth engaged with what looks like a quarter of the pulley.
On a side note, I am currently looking at my bed plate design. I have put in a recessed hole to insert a standard kitchen sink waste hole. Is this OK or is there a preferred method? Also wondering if to move it to the corner and tilt the machine towards it...
Attachment 17031Attachment 17032