Y axis

Discussion specifically about the Shark's bigger brother, the CNC Shark Pro

Moderators: al wolford, sbk, Bob, Kayvon

Post Reply
mike&jo
Posts: 42
Joined: Sun Dec 26, 2010 8:36 pm
Location: Mobile Alabama

Y axis

Post by mike&jo »

Need to get to the set screw on the y drive to remove and lock tight. Is the a easy or right way to get to it?

User avatar
Consultingwoodworker
Posts: 333
Joined: Fri Jul 02, 2010 7:37 am
Location: Nashville area
Contact:

Re: Y axis

Post by Consultingwoodworker »

There are two screws in the black coupler that connect the motor to the lead screw. The one closest to the motor may be inaccessible because it is inside the frame of the Shark.

I have found that you pretty much need to loosen the outer set screw, remove the motor with the coupler on it, secure that screw (you may want to use loc-tite) re-set the motor, and then re-tighten the outer set screw.

Hope this helps,

Ralph

mike&jo
Posts: 42
Joined: Sun Dec 26, 2010 8:36 pm
Location: Mobile Alabama

Re: Y axis

Post by mike&jo »

It is the outer set screw that is loose, hand can't get to center. Was hoping there was a nice easy fix.

User avatar
Consultingwoodworker
Posts: 333
Joined: Fri Jul 02, 2010 7:37 am
Location: Nashville area
Contact:

Re: Y axis

Post by Consultingwoodworker »

You should be able to remove the base plate, or you could cut a section away directly below the coupler to ease future access.

Ralph

4DThinker
Posts: 951
Joined: Wed Jun 27, 2012 9:00 am

Re: Y axis

Post by 4DThinker »

If the table is MDF, it'll come off easily by unscrewing the screws along the angle iron sides. If it is t-track, each section is bolted down to plastic blocks with one bolt at the front and one at the rear. Unbolt or just loosen and you should be able to slide each section off the bolt heads to gain access to the Y axis.

rungemach
Posts: 460
Joined: Mon Aug 02, 2010 8:24 am
Location: Sarasota, Florida

Re: Y axis

Post by rungemach »

If your couplers have small set screws, consider replacing them with cap screws. I believe NWA sells them as parts now on their website.
That allows you to use a larger wrench and get more torque on the screw.

If you find you may want to check the coupler regularly, you can use T-nuts on the motor attachment bolts, pulled down into the plastic frame. That allows you to unscrew the motor bolts with the nuts still in place, pull the motor and lead screw back out 6" or so to service the coupler, and push it back into place without needing a wrench on the inside of the machine. The bearing on the far end will most likely stay on the lead screw shaft, or in the hole, allowing you to carefully slide the lead screw back into place. The gantry will move along with the lead screw when you do this.

http://www.cncsharktalk.com/viewtopic.p ... 20&p=13551

mike&jo
Posts: 42
Joined: Sun Dec 26, 2010 8:36 pm
Location: Mobile Alabama

Re: Y axis

Post by mike&jo »

Thanks
With a few extentions, got in there from the side. Good Idea to change the set screw. will do that if it fails again.

Post Reply