I'm trying to mate a 1.25" V-Bearing to a 1/8" rail on my DIY CNC. Is there a way to do this and have the bearing move along the rail?
I use a planes on the center of the wheel mated a distance from the top of the V angle and a second mate to keep it along the center of the angle.
Two tangent mates also work, from either side of the angle to either side V-bearing. Distance and coincident mates seem to be more stable to me and that is why I use them.
I have tried this both ways as described by Wayne, and I have to say that the model will likely be more stable and run quicker if you create some equivalent reference geometry to use for the actual mating. It is my preferred method.
However, that practice does have the down side that you may need to periodically manually check the fit between the wheel and the rail against unintended changes to the interface due to changes to other components - your reference geometry may not keep up with other changes in your assembly unless it is based on bulletproof context-based geometry. Unintended changes when you are using tangent mates are more likely to throw up mate errors and often are more obvious to the eye.
First off: Thanks for the reply. I am a Very new beginner with Solidworks. I have been using Sketchup for my 3D drawings. My question was:
I have tried to understand how to us "Planes" for whese parts but have not gotten any thing to work. Here are the parts I would like to mate.
2015-11-10_1452 - Gene8522's library. and the files for the assembly. Would it be asking too much to ask you to finish the Mates for me to have as an example? Once I see how it is done I will be able to work it into the diy CNC I would like to build. I have washed just about every YouTube on the subject of 'Mates' but can't find any that would help with my V-Bearings.
Thanks for any help you can give.
...maybe this will help?
Thank for the reply. When I open the .zip it shows the assembly has errors and stops running.
...the only errors are from the missing "Nylon Hex Nut - X.Xmm.SLDPRT" files you had in the asm you provided
Paul thanks for the offer to help. I have no idea how the hex nets got added to the file. But when I un-zip your file and open it the parts are not as they should be placed.
2015-11-10_2149 - Gene8522's library
Could I ask you to please resend? Are maybe email the file. Address is above.
One way to do it is set up a width mate between the sides of the bearing and the sides of the rail. Then do a tangent mate between one of the V-edges and the corresponding V-edge of the rail.
I can get the width mate to work but can't get the tangent mate to work as I think it should. The 45deg. faces on the bearing and angle will not work.
Mine seems to work fine. I attached the files.
Tangent mates can produce issues, especially if you're changing part sizes, sometimes they jump to the outside of the circle when you intended it to be on the inside of the circle etc...
One way to ensure good mates is to add additional sketches/planes to your V-Groove wheel and use those planes (in your case you would have one or more at 45deg), which would mate coincident with the angle face, you could also add another sketch in the V-Groove wheel with a point that you could mate coincident to the angle edge, just avoid tangent mates........
I would like to thank everyone for their time and reply's to my post. They got me thinking in the right direction of using 'planes'. Using the 'Width Plane' and setting up the proper 'planes' on the angle rail and V-Bearing, I was able to make this work. Like I said I am a very new user of SolidWorks and I find it hard to believe to power of this program. I have been using SketchUp for my 3D drawings and was able to draw my diy CNC with it.
Retrieving data ...