time to gather parts for new machine

[deannos]

Hi Mike,

I have been following a set of tutorials and seem to be getting the hang of it. Started on the Y gantry and now have the basic shape etc. But I'm wondering if there are minimum dimensions that should be adhered to. The width of the " z plate" and the Y gantry for example.

Dean

[JAZZCNC]

Hi Mike,
But I'm wondering if there are minimum dimensions that should be adhered to. The width of the " z plate" and the Y gantry for example.

Dean

Dean regards dimensions Gantry width, Y Axis etc then you want to get the dimensions of the actual bearings your going to use, these will dictate the minium width.
Also if you are planning on using ballscrews the chances are you will use BK/BF bearing blocks to mount the screws, these along with rail/bearing width will dictate the Z axis minimum width.
If you look around on the net there will be 3D models of BK/BF Blocks, linear rail/bearings etc these make it easier and save some work.
Try to model it close to spec of parts to be used as possible, this becomes more important in areas where it gets tight like the Z axis. It's very easy to think it will fit then find out it doesn't by a few mm's.!!!

[MikeyC38]

Hi Dean

Sorry - I just saw your post. The advice Jazzcnc is given you is right. I had the parts to hand when doing by drawing so I could measure them and draw them reasonably accurately. I've put up a drawing of the latest Z axis design. Unfortunately I don't know what files the free version of SketchUp can import - the dwg and dxf exports from TurboCad 15 Platinum Pro are ok-ish. Surprisingly, the STEP format (Industry standard 3D format) is spot on and I can exchange drawings / objects with my cousin who uses CATIA at work!

[deannos]

Thanks for all the info guys, i think i have enough to get on with the designing.