Agree on the Z axis distance from the gantry. Z axis design is probably next. The Z axis plate will be as wide as I can make it with my already purchased ballscrews and the cutting area needed. I bought some components early when I mistakenly thought the design was done.



Did vertical loadcase on the Gantry_0 design (twin separated beams) and the Horizontal "L". Used 500N line loaded distribution in vertical direction.

Twin separated beams: 0.1mm vertical deflection which will be my vertical comparison metric

Click image for larger version. 

Name:	Gantry_0_Vert_geometry_hc.jpg 
Views:	4383 
Size:	152.9 KB 
ID:	23274Click image for larger version. 

Name:	Gantry_0_Vert_Loadcase_hc.jpg 
Views:	4451 
Size:	125.7 KB 
ID:	23275Click image for larger version. 

Name:	Gantry_0_Vert_Results_hc.jpg 
Views:	4440 
Size:	221.0 KB 
ID:	23276

And the horizontal "L": 0.03mm vertical deflection.

Click image for larger version. 

Name:	Gantry_5_Geometry_hc.jpg 
Views:	4414 
Size:	144.8 KB 
ID:	23279Click image for larger version. 

Name:	Gantry_5_Vert_Loadcase_hc.jpg 
Views:	4437 
Size:	142.9 KB 
ID:	23277Click image for larger version. 

Name:	Gantry_5_Vert_Results_hc.jpg 
Views:	4416 
Size:	200.4 KB 
ID:	23278

Still happy with the horizontal "L" configuration. Also like that again the beam has a fairly nice distortion distribution with the horizontal and vertical deflections similar under similar loading. Not sure I need to increase the vertical height of the horizontal "L" configuration or not. Deflections are well matched in both directions and adding height will be a little complex.

This discussion is really helping me to think this out.

John C