Heavy Duty CNC Construction Set: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
=24" Square Bed Heavy Duty Machine Case= | =24" Square Bed Heavy Duty Machine Case= | ||
Using 2" shaft. 2 foot x 2 foot bed - deflection in middle will be 1/4 of the value from the 200 lb force calculator at 2" diameter shaft (deflection at end of 12") shaft) - because the [[Universal Carriage]] is supported by 2 shafts at the midpoint of the 2' bed, or 4-shafts equivalent at a 12" end of rod. | |||
'''Design of a heavy duty CNC machine for 200 lb lateral forces, such as a CNC metal mill:''' | |||
Using 2" shaft with the [[CNC Universal Axis]]. 2 foot x 2 foot bed - deflection in middle will be 1/4 of the value from the 200 lb force calculator at 2" diameter shaft (deflection at end of 12") shaft) - because the [[Universal Carriage]] is supported by 2 shafts at the midpoint of the 2' bed, or 4-shafts equivalent at a 12" end of rod. | |||
[[Shaft Deflection Calculator]] results: | [[Shaft Deflection Calculator]] results: | ||
| Line 9: | Line 12: | ||
*Shaft length: 12" | *Shaft length: 12" | ||
Result: 0.005" deflection. | Result: 0.005" deflection - or capacity to mill engines and motors on this machine. | ||
This means ~0.001" deflection due to the 4-shaft equivalent | This means ~0.001" deflection due to the 4-shaft equivalent of the [[CNC Universal Axis]] | ||
Bushings printed in [[Lulzbot Nylon]] | Bushings printed in [[Lulzbot Nylon]] | ||
Latest revision as of 20:44, 12 October 2016
24" Square Bed Heavy Duty Machine Case
Design of a heavy duty CNC machine for 200 lb lateral forces, such as a CNC metal mill:
Using 2" shaft with the CNC Universal Axis. 2 foot x 2 foot bed - deflection in middle will be 1/4 of the value from the 200 lb force calculator at 2" diameter shaft (deflection at end of 12") shaft) - because the Universal Carriage is supported by 2 shafts at the midpoint of the 2' bed, or 4-shafts equivalent at a 12" end of rod.
Shaft Deflection Calculator results:
- Shaft: 2" diameter
- Load: 200 lb
- Shaft length: 12"
Result: 0.005" deflection - or capacity to mill engines and motors on this machine.
This means ~0.001" deflection due to the 4-shaft equivalent of the CNC Universal Axis
Bushings printed in Lulzbot Nylon