Distance between air assist and target
Posted: Wed Jan 20, 2010 3:44 pm
I am just in the process of designing my focusing lens assembly and I was looking for some guidance as to how far I should keep the end of the focusing assembly/air assist away from the part that I will be cutting? My focusing assembly/air assiste will obviously hold the lens and will have an air going coaxially around the beam and out toward the target. Should be bottom of my assemlby be say .100" away from target or .25" or further? How much clearance should I have between the beam width and diam of the exit hole of the assembly?
What are problems associated with it being too far away or just too close? Is a large air assist hole better than a smaller one? I've never done this so any quidance would be helpfull.
I plan to have the ability to move the focusing assembly up and down manually. The focal length of my lens is 2.5".
Richard
What are problems associated with it being too far away or just too close? Is a large air assist hole better than a smaller one? I've never done this so any quidance would be helpfull.
I plan to have the ability to move the focusing assembly up and down manually. The focal length of my lens is 2.5".
Richard