I'm in the design stage of a large router, and I'm thinking it will require dual drive for the x axis. One concern I have is what would happen if one motor fails for some reason? Will the machine damage itself?

I've been thinking about creating a mechanism to alarm and shut the machine down should the two motors get out of sync.

 

Why do you think it will need dual X motors?
Alex.

 

With the drive only on one side, there will be some twisting when routing in the x direction. That twist will result in a slight position error. Dual motors like the design in the builders post
1010 with linear rails
will eliminate that twist.

 

Any chance you can share more pictures of the z axis/assembly connections I like how you've kept the distance offset from the c-beam gantry minimized the way it's mounted. The pictures are too dark to see what it is that you've done however and I'd love to see more of these details. I'm working through a move to linear rails for my gantry and z and haven't come up with an idea for the mounting of the z assembly that I like all that much and have been conscious of not creating a great distance away from the gantry beam to avoid the longer lever.

thanks

 

There is only one motor on the X axis in this build. I have a workbee with linear rails upgrade (and single X axis motor), although some twist of the X C-beam is inevitable if you push the machine hard having two motors will not eliminate that. My machine is accurate to at least +/- 0.1 mm in all materials from soft plastics up to mild steel.
Alex.

 

Maybe I'm confused on how this site works. I was responding to the build I mentioned above. If you look at the pics, you'll see two motors driving the x axis. I'm in the process of gathering information before proceeding with my build, which is why I asked about the two motor design.

 

Excellent thanks, I can see them now.

 

My old small 12x12 router and the accompanying SW defines X as the axis perpendicular to the gantry. From now on I'll refer to it as Y.
I was considering designing something to detect a sync issue if there was a failure in one half of the dual drive system.
The reason I asked the question was to see if something already exists.