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Thread: slipping material

  1. #11
    Join Date
    Dec 2015
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    Harrrisburg Area
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    i'll confirm head pressure before making another cut. On a regular cnc multiple passes makes a cleaner cut, but the x-axis traction drive is a different animal.

    Thanks!

  2. #12
    Join Date
    Nov 2008
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    Vancouver Island
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    When slippage occurs with multiple passes, we get stair stepping. Since you made multiple passes and there seems to be no stepping, I would think that either the board slipped before the cutting operation or that the cut path and carving pattern got shifted in Designer.

  3. #13
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    Dec 2015
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    Harrrisburg Area
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    It seems to be just on the right side. This might be due to the "climb" of the router rotation on the piece and the lack of head pressure. the cut and design are both centered in the software. I'm going to troubleshoot the head pressure today.

  4. #14
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    Dec 2015
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    Harrrisburg Area
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    Yes... I thought that the roller sensor reading was using a minimum pressure when it showed engaged

    the head pressure is only in the 50's for the rubber belt. I'll need 75-90.

    I use dry graphite rather than the lubes on the posts and the acme screws. I'll also reset the alignment.

    Thank you!

  5. #15
    Join Date
    Dec 2014
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    Kaukauna, Wisconsin
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    Low head pressure could be caused by the clutch releasing early, in which case you would have to shim to increase pressure.

  6. #16
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    Dec 2015
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    Harrrisburg Area
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    The clutch in the handle, right? That sounds like its the issue. If so, would I use a washer or spacer? Very good information!

    I really appreciate everyone's help on this. I should have been using the forum more often.

  7. #17
    Join Date
    Dec 2014
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    Kaukauna, Wisconsin
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    Yes the clutch is behind the handle. There are shims behind the handle. They are between the handle and spring and are used to push the spring forward putting pressure on the crank torque plate. The more pressure on the plate the clutch will take more load before it kicks out. Here is a link to the pasts list and drawings http://www.carvewright.com/assets/se...ist_manual.pdf. great break down drawing to see how it all goes together.

  8. #18
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    Dec 2015
    Location
    Harrrisburg Area
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    many thanks again!

  9. #19
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    Dec 2015
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    Harrrisburg Area
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    Head Pressure is now 115 lbs. a little more than the 90 lbs specified for the max.

    It was the clutch. Rather than shimming, I took a flat head screw driver and expanded the spring. (I may have to shim in the near future).

  10. #20
    Join Date
    Sep 2007
    Location
    Northern Colorado
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    7,719

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    Quote Originally Posted by the_skeptic View Post
    Head Pressure is now 115 lbs. a little more than the 90 lbs specified for the max.

    It was the clutch. Rather than shimming, I took a flat head screw driver and expanded the spring. (I may have to shim in the near future).
    115 lbs is to high. You stand the chance of stripping the X drive gears with it being that high.
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