Comments on my first attempt at a design (if you would)

[lukekjackson]

I'm back with my updated "design".

I think I've taken most of the advice on board, the glaring omission in the "spindly" legs. My problem with this is the ability to flatten a solid block of steel that size. I've added another leg, actually due to the fixing points clashing with the webs under the Surface plate, but it cant hurt rigidity. Once its up and running i may revisit this.

General Overview


Increased Z Carriage
Head Strengthened Laterally
Pully Drive Fixed down to the head at the back


Column Gusset plates moved


Y Axis Linear bearings widened


I've also lost the T=slotted table and decided to go with a fixture plate type setup tapped for 6mm bolts and drilled and reamed for 6mm dowels for alignment. The table has got longer though which makes the overhang a bit of a worry.



My reading of the HIWIN Data sheet for the HGH25 say dynamic moment My is 240Nm equates to c. 24Kg at a meter for one block, my total distance from block to furthest point is c.0.5m meaning 48kg is required to hit the max, there are 2 rails, so 96Kg and that doesn't account for the blocks being in pairs per rail, which you would assume would have a fairly large impact torque applied.

So if i understand the Data i could put over 100kg on the table at full extension and still be in the limit. If that is the case i have no worries but it just looks wrong. Could someone check my logic.



The last lot of comments were a big help so any more would be appreciated.

I'm also looking at a frame and enclosure so will be back with more at some point

Cheers,

Luke