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BP clone making ratchet noise when power down feeding while drilling

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  • BP clone making ratchet noise when power down feeding while drilling

    Hey gang, I am back with another question for those of you that have power down feed for you z axis and have used it. Today I tried it for the first time. I was drilling through some 1" CRS with a 3/8 drill bit under power. The down feed rate was set to .0015 and while drilling it would make a ratcheting noise like maybe there is a clutch setting for it. I helped it along with the manual feed and finshed the 3/8 hole. Next I used the 1/2" to widen the hole with no ratcheting noise then I stepped up to a 5/8" and still didn't have the noise. Now I have my boring head in the mill and am boring out the hole and haven't heard it since. I think it's just a clutch of some kind but not sure.


    Guess what I am asking is if this is normal or not?

    TIA
    Bob
    Bob
    Pics of shop and some projects
    http://s2.photobucket.com/albums/y39...achine%20Shop/

  • #2
    The power downfeed in BP's is not designed for heavy drilling, its really designed just for boring. There is a mechanical ratchet/clutch that limits the amount of force the power feed can extert and what you are hearing is that clutch ratcheting, so its telling you that you are trying to push the downfeed too hard.

    Paul T.

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    • #3
      Your down feed cluch is slipping probley normal with 3/8 drill did not slip after inital hole was drilled . I usually drill a ¼in hole or 5/16 by hand then enlarge with power feed like you did. I dont realy think you have a problem . But under that about 2½ dia cover on the left side of the head is the cluch. Take the 2 screws out pull cover off you will see a piece with small v shaped cluch teeth and a spring behind it . their is a set screw you can loosen and tighten a collar up by turning it to tighten springup a little not all the way ,that is a over load cluch suppose to slip if things jam up or heaven for bid reck.
      Last edited by lane; 02-10-2007, 09:24 PM.
      Every Mans Work Is A Portrait of Him Self
      http://sites.google.com/site/machinistsite/TWO-BUDDIES
      http://s178.photobucket.com/user/lan...?sort=3&page=1

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      • #4
        Awh....thanks guys I knew this board would come through. I will manual feed the guide hole from now on. Sure am loving this power down and back up for boring holes......))
        Bob
        Pics of shop and some projects
        http://s2.photobucket.com/albums/y39...achine%20Shop/

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