ZAxis Assembly Interference

Assembly questions and answers for the Shapeoko 3 CNC Mill
RawIndDesign
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Joined: Fri Mar 06, 2015 7:44 pm

ZAxis Assembly Interference

Post by RawIndDesign » Sat May 30, 2015 3:40 am

Looks like I cannot prevent the interference between the M5 screw heads of the fixed pulley and the lower left hand XAxis Stepper. Wondering if I'm the only one, before I make any permanent mods.

-Chris

WillAdams
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Re: ZAxis Assembly Interference

Post by WillAdams » Sat May 30, 2015 4:50 am

No interference here ― you do have a button head cap screw on the motors, right?
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
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RawIndDesign
Posts: 18
Joined: Fri Mar 06, 2015 7:44 pm

Re: ZAxis Assembly Interference

Post by RawIndDesign » Sat May 30, 2015 9:54 am

Yes, all button head. How many washers do you have on the V wheels for Z axis slide. I have two per, one on front and back of each wheel based on the drawing. Removing the washer between V wheel and Z plate would be my only source of clearance, but it introduces more friction to bearing.

RawIndDesign
Posts: 18
Joined: Fri Mar 06, 2015 7:44 pm

Re: ZAxis Assembly Interference

Post by RawIndDesign » Sat May 30, 2015 10:26 am

May have been wrong about that, only by adding an additional washer behind each Z-Axis V-Wheel will the M5 head on the fixed pulley clear the lower M5 X-Asix stepper mount screw.
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WillAdams
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Re: ZAxis Assembly Interference

Post by WillAdams » Sat May 30, 2015 1:10 pm

Maybe this photo will help? Took apart my spindle carriage:

Image

Nut on one side, the V-wheel is sandwiched between washers.
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
Nomad 883 Pro #596 (bamboo)

RawIndDesign
Posts: 18
Joined: Fri Mar 06, 2015 7:44 pm

Re: ZAxis Assembly Interference

Post by RawIndDesign » Sat May 30, 2015 1:35 pm

Thanks Will. I've got the identical setup, with the exception that this image must have been taken before you guys learned that the fixed pulley, per the print, was in the wrong orientation for Z-Belt alignment. I'll have to verify, but my only guess is that perhaps that particular Belt Pulley is longer than it should be. If that turns out to be the case, I can just counterbore the shaft hole to recess the M5 screw head.

adamluna
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Joined: Sun Feb 08, 2015 8:29 pm
Location: Denver, Colorado

Re: ZAxis Assembly Interference

Post by adamluna » Sun Jun 21, 2015 5:55 am

It's the exact same problem I'm having. Did you get it resolved? How? Counter sinking the hole to make the screw head fit sounds like a good idea. Let me know please! Thanks!

Adam


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Adam
Shapeoko 3 w/DPW 611 #243
WIN7 64bit - Trying to figure it out a Workflow

WillAdams
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Re: ZAxis Assembly Interference

Post by WillAdams » Sun Jun 21, 2015 2:59 pm

Please look closely at my pulley and its bolt. My (early?) machines used a threaded pulley w/ a flat head bolt w/ a recessed socket head.

I’m guessing that the new machines use a button head cap screw which creates this problem if it’s put in from the same orientation — probably it should go in from the other side of the plate and one wouldn’t need a nut for it — that’s just a guess though. It would explain the sudden rush of missing nuts though.

Please lay out your parts and take a photograph of them and post it and we should be able to solve this.

William
Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
Nomad 883 Pro #596 (bamboo)

adamluna
Posts: 84
Joined: Sun Feb 08, 2015 8:29 pm
Location: Denver, Colorado

Re: ZAxis Assembly Interference

Post by adamluna » Sun Jun 21, 2015 3:07 pm

Will! What picture are you referring to? I will take one of my z axis parts and show you. I have tried many things and checked three times all of my assembly and I don't see it unless the screw is counter sink or flat head I don't see any other possible way of solving this issue.


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Adam
Shapeoko 3 w/DPW 611 #243
WIN7 64bit - Trying to figure it out a Workflow

WillAdams
Posts: 8542
Joined: Mon Apr 09, 2012 6:11 pm
Location: Pennsylvania --- south of the Turnpike, East of US-15
Contact:

Re: ZAxis Assembly Interference

Post by WillAdams » Sun Jun 21, 2015 3:16 pm

Shapeoko 3XL #0006 w/ Carbide Compact Router w/0.125″ and ¼″ Carbide 3D precision collets
Nomad 883 Pro #596 (bamboo)

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