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IndustryArena Forum > WoodWorking Machines > CNC Machining Centers > Getting different results when changing the feed rate on my machine.
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  1. #1

    Getting different results when changing the feed rate on my machine.

    I am getting different results when changing the feed rate on my machine. When the feed rate is slower the engraving looks a lot better. Anyone know what would cause this?

    When you look at the picture of the two "e"s the first "e" was done at a higher speed and the second "e" was done at a slower speed. So my question is what the hell would cause this? We replaced the bearing blocks on the X axis do we need to replace them on the Y axis too?


  2. #2
    Gold Member
    Join Date
    Apr 2004
    Posts
    4948

    Re: Getting different results when changing the feed rate on my machine.

    It looks like the second one is carved deeper than the first; all the V-cuts are wider. Did Z change position from one to the other?
    Andrew Werby
    Website

  3. #3
    Quote Originally Posted by awerby View Post
    It looks like the second one is carved deeper than the first; all the V-cuts are wider. Did Z change position from one to the other?

    It was the brush on the dust boot. Everytime it went down to carve the brush was pushing against the workpeice and moving the spindle. So I just cut the brush shorter.

  4. #4
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    Join Date
    Dec 2003
    Posts
    503

    Re: Getting different results when changing the feed rate on my machine.

    Quote Originally Posted by Rschaeffer83 View Post
    It was the brush on the dust boot. Everytime it went down to carve the brush was pushing against the workpeice and moving the spindle. So I just cut the brush shorter.
    That looks like a fairly clear sign of a flexing machine.If a few bristles can cause a distortion you might want to look around the whole machine carefully.

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