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X axis vibration issue.

Created by: Uthay at: 9/28/2012 8:44 PM (7 Replies)

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9/28/2012 8:44 PM	Rate (0)
Uthay Posts: 47 Rating: (0)	Hi, How to correct the X axis vibration, Please find the attached trace for X axis encoder readings Ballscrew, X axis distance code reader, X axis LT module & X axis motor replaced but this axis vibration not solved, We are facing part hole ovality issue due to this vibration, Please support. Attachment Servo trace..pdf (447 Downloads)
Uthay Posts: 47 Rating: (0)
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9/29/2012 7:29 AM	Rate (0)
OvidiuNastac Silver Member Joined: 1/29/2008 Last visit: 7/26/2022 Posts: 419 Rating: (19)	Hi Try to decrease Pos_ctrl_gain (position control gain) for X axis. But could be other issues also in the mechanical system like the lack of lubrication on the guide ways. Good luck Nit

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9/29/2012 11:54 AM	Rate (0)
Pee El Sea Gold Member Joined: 1/19/2008 Last visit: 10/2/2024 Posts: 992 Rating: (63)	Hi, I usually start by dropping the drive proportional gain and sometimes switch out the integral gain completely to slow things down to see what triggers problem. If the machine is highly tuned the I would retune (optimise) the drive again before changing anything else. I think I would also switch out the linear scale and run off the motor encoder to elimiate one of the feedbacks. You don't say which control system you are using. Also check basics like earthing and connections. Pee

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9/29/2012 1:40 PM	Rate (0)
Uthay Posts: 47 Rating: (0)	Hi, Thanks for your reply.. This is 5 axis milling machine 840D power line system X axis dual encoder system Position measuring system 1 is motor encoder Position measuring system 2 is distance code reader (linear scale) (DB31.DBX1.5 is active) My attachement servo traceis position measuring system 1
Uthay Posts: 47 Rating: (0)
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10/1/2012 6:49 AM	Rate (0)
Ekalavya Posts: 2964 Rating: (484)	Hello,,, Small suggestion here..most of the time linear scale header is not clean and full of oil dirt then you have the vibration issue. try checking your linear scale... most of the time problem solves here or disconnect the scale and try running with motor encoder and check. Regards, Prakash
Ekalavya Posts: 2964 Rating: (484)
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11/17/2012 11:16 PM	Rate (0)
Uthay Posts: 47 Rating: (0)	Hello Prakash, Thanks for your info, We are unable to disable the secondary encoder because my machine having Safety integrated. Finally found spindle vibration is high that time only X axis vibration, now reduced the spindle speed after that everything is ok. Thanks, Uthay.
Uthay Posts: 47 Rating: (0)
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11/6/2024 6:51 AM	Rate (0)
Bekir_erhan_06 Joined: 10/10/2023 Last visit: 11/6/2024 Posts: 1 Rating: (0)	With which parameter did you succeed? 32200?

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11/7/2024 4:39 PM	Rate (0)
nulizhang Platinum Expert Joined: 10/17/2007 Last visit: 11/18/2024 Posts: 4075 Rating: (357)	Yes, here is a forum, everyone has right to talk . but dear User, please don't joining discussion with 12 years old topic! if you have question --make your own topic. Bekir_erhan_06 With which parameter did you succeed? 32200?
	Last edited by: nulizhang at: 11/07/2024 16:44:24 If you like my comments please use "Thank" bottom left or Rating Top right
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