Friction comp for Daewoo cnc mill fanuc controller
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  1. #1
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    Default Friction comp for Daewoo cnc mill fanuc controller

    Hi all,

    I was wondering if any of you know how to apply friction comp for a Daewoo 3016 3 axis mill? I never knew such a thing existed until a couple weeks ago. A guy I know said he adjusts friction comp on his Haas depending on how much weight is on the table (ie. 1 vise, 2 vises, 3 vises, a big heavy part, etc). We usually just keep 1 kurt vise on the table.

    Does anybody else here use this parameter adjustment? Also, what is the parameter adjustment for this on a Fanuc Oi-MB controller?

    Chris

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    Bump

    Is anybody here familiar with this parameter?

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    This is from the manual for newer controls 31i and 0iMD. I dont think you meed to worry about this on a small LM guide machine. Are you having an actual issue?
    What is on a Haas control is not the same as on another control. Haas may hook that value into the gain or who knows what.

    5.SERVO FUNCTION DETAILS
    B-65270EN/08
    - 246 -
    5.5.6
    Static Friction Compensation Function
    (1) Overview
    When a machine, originally in the stop state, is activated, the increase in speed may be delayed by there
    being a large amount of static friction. The backlash acceleration function (see Subsection 5.5.4 and
    Subsection 5.5.5) performs compensation when the motor rotation is reversed. This function adds
    compensation data to a velocity command when the motor, originally in the stop state, is requested to
    rotate in the same direction, thus reducing the activation delay.

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    No not having an issue. Just something I discovered and wanted to learn and possibly fiddle around with this parameter on the machine. I appreciate your response.

    It seems like this isn't a very well known topic among the machining community but I may be wrong

    The machine we have is box way

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    Quote Originally Posted by cgrim3 View Post
    No not having an issue. Just something I discovered and wanted to learn and possibly fiddle around with this parameter on the machine. I appreciate your response.

    It seems like this isn't a very well known topic among the machining community but I may be wrong

    The machine we have is box way
    Unless you have a flimsy machine or are doing super nice mold cavity type work, you don’t need to eff with it.

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    Quote Originally Posted by Vancbiker View Post
    Unless you have a flimsy machine or are doing super nice mold cavity type work, you don’t need to eff with it.
    Agreed. I'd leave this alone. I can see bad things happening. Most of the time stuff like this is set and then left.
    I'd be more interested in look ahead, feed rates, etc.

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