Malfunction due to steppers overheat

Question

Malfunction due to steppers overheat

AngelLM opened this issue 8 years ago · comments

Steppers overheat causing printed gears deformation and malfunction of the arm.
Possible causes:

Wrong stepper drivers or wrong configuration.
Not enough refrigeration. Actual design does not allow air flow.
Possible solutions:
Find other driver that works better.
Modify the actual design to allow steppers refrigeration.
Use a more heat-resistant material to print the gears: ABS, Nylon, HIPS, PET...

AngelLM · Answer 1 · Tue Sep 27 2016 05:44:16 GMT+0800 (China Standard Time)

I'll try to solve this keeping the A4988 drivers, modifying the design and trying to print the gears with other materials.

Danny Van den Heuvel · Answer 2 · Wed Sep 28 2016 04:03:04 GMT+0800 (China Standard Time)

I gone use Microstep Driver ST-7128 from stepperonline
My gears are printed with ABSPlus from Stratasys. (If you need some let me know)
When I finished the robot I will give feedback
I going to look to buildin a ventilation systeem into the second articulation to prevent the heating.

AngelLM · Answer 3 · Fri Sep 30 2016 01:55:16 GMT+0800 (China Standard Time)

I'll be waiting for that awesome feedback!

I just pushed a new modification of the design, allowing the air-flow and the installation of 40mm fans. Before merging it to the main branch I have to test it.

Danny Van den Heuvel · Answer 4 · Mon Oct 03 2016 05:48:48 GMT+0800 (China Standard Time)

Can't wait to see your solution!

AngelLM · Answer 5 · Mon Nov 07 2016 23:55:17 GMT+0800 (China Standard Time)

Solved on dd6c5e3!
Yay, the new design enable the air flow and refrigeration of the steppers. Now they don't melt the structure or gears, making possible the arm activity for a long period of time.

Closing this!