Reply with QuoteIs there any counter balance system in place for the Z?
If so it may need attention.
Al.
Fanuc 0iMC Buzzing sound - Machine adjustment
Hi all!
Does anyone know which parameters should be adjusted for Fanuc 0iMC with alpha-i motors when there is buzzing sound by Z (vertical) axis in VMC?
The sound appears when running the program after G1 movement when axis is in position (when G0 or manual move - everything is OK). It even appears when there is no actual movement (Z-axis is locked). So there is some "misunderstanding" between motor-driver-control. Could anyone help with it?
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Is there any counter balance system in place for the Z?
If so it may need attention.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Yes, there is a counter balance - weight type. Basically we 've clamped this weight and machined moved witout it. We even locked the Z axis (by special button on Operator Panel) so that it did not move (but the Z coordinates on the screen were changing like it was normal work). But the result is the same.
The machine position display will move because it is the Anticipated, or where it Should be position, not the feedback from the encoder.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
HI
try to check the volyage of the brake of the z axis motor.
i had once some like this and when i start was ok but after a few moves i saw that my 24v from brake it dissaper.
try also to go on monitoring system and check if is an unsual load of the z motor.
normal with weight should be around 15-20% if it is higher it means is something wrong on the movement.
also check the guides if have oil on it.
check also the coupling between the motor of the Z and the ballscrew if it is corect tighten.
give us more details about what u do and what is not normal.
GOOD LUCK!
g
Does the noise go away or hear different pitches if you change the feed rate with the feedrate overide switch?
The problem seems to be solved - the Load Inertia Ratio (2021) was adjusted and 2107 (LDINT during cutting G1). And I noted that it effects the parameters in SV.TUN screen - the Velocity Gain.
Thanks to everybody!
Re: Fanuc 0iMC Buzzing sound - Machine adjustment
Hi Leha... I have a similar problem with a FANUC 16i-M. The Y axis buzz like a stopping train. Could you explain further how it is that you solved this? Thanks.
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