big peak on 35hz on y axis help :/
Hi, i am tuning my v core 4 400mm and i am stuck with problem that my gantry is shaking like crazy on around 30-35Hz which gives me horrible accelerations . I used real time analyzis to test that frequency and i found the carriage is shaking the most , if thighten the belts then whole gantry is shaking.
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Meanwhile the x graph looks ok to me . One peak at 65 Hz and gives me 16k acc
Did you resolve this? My graph looks very much the same
Unfortunately not
could be to much toruqe on the XY - connector screws, the ones hold down by a locknut
Have you figure out the issue for the 35Hz peak?
this is odd. I have the exact same issue
I have found that my screw on the motion system are skew by around 1mm : M5x45 and M5x85 Cap Head Screws.
I have ordered new ones. I will test them next week. I will see if it comes from that issue...
I have changer my screw, They are not skew (the head of the screw is perfectly square with the body this time).
This doesn't solve the issue around 30Hz. Wrong way
I thing that's a quality issue with parts in kit mate
I am building right now another rat rig this time same as yours and even tho it's bigger the motion works much better that my previous build even tho I did everything the same way
No clue
Since i work at company which builds that kind of maschines for customrd I will build another rat rig in few months so we will see
But still the biggest isue i am having with this kit is printed parts, oh man, they are horrible. Look awful and have like 2 walls and 10% infill i swear
Printed mine with 5 walls and 50% from good quality asa and wasn't able to break that while screwing M6 through it
Maybe a stupid question, are you using a Smart Sensor for Orbiter v2?
Could it be a possibility?
Hi,
After 5 months, I attempted to get MZV IS graph, my main issue was (I guess) in the XY_joiner assembly :
- I have change my assembly by the Funssor light XY joint kit, and turn by 90° the 2020 extrusion (maybe I had overtighten my T-nut in the 2020 extrusion)
and I guet MZV, but with huge tension (to my mind) : x is 108hz (with EPDM GT2 belt) and y is 99 hz
To improve, I have change 2 Y pulley (facing belt tooth) by home made 22 tooth iddler pulley using 5x10x4 bearing (printable : https://www.printables.com/model/1343636-22-tooth-idler-pulley-rat-rig-vc-4-with-5x10x4-bea)
for reminding : I had nice X IS and uggly/unusefull Y IS before this mod.
The bad side is the printer should work as it is designed. Thus I didn't figure out what I have done wrong in the assembly.
Hope this help 😉
This makes sense... I have same issue at 36 Hz. I get much better results without the hybrid belts. Did you also change the back ideler? The one in the corners by the motors?
I have changed all 4 on Y axis.
But on X axis, I didn't notice any improvement.