ctyleruf
Plastic
- Joined
- Apr 23, 2012
- Location
- Charlotte, NC
Hi guys,
I'm trying to machine some carbon fiber sheets to make CF wing frames. I've posted some pics of my first attempt. It went okay but I need a better way of fixturing the sheets. I begin with facing the 0.8mm sheets to 0.15mm with a 1/4" flat endmill. I then proceed with cutting the inner contours of each wing with a 1mm endmill; followed by the outer contours to release them from the sheet. I am using a small table top CNC Baron at 1500rpm. Each side is 1mm wide and 0.15 thick except for the triangular base; which is the original 0.8mm.
I plan to try a double sided tape method to hold them down next. I would like to get a tape that holds, but also doesn't leave a residue on the frames. It's also necessary that they be removed easily, possibly with acetone.
I thought of a vacuum chuck system but when I get to the through contours I wouldn't want to damage the chuck.
Any fixturing suggestions would be helpful. Also, tool wear with eventually be a problem. Any suggestions regarding tooling would also be helpful. I don't know if diamond coated burrs will cut at these speeds (plus they're sort of expensive).
Thanks.
PS: I understand the hazards associated with the process. I'm taking the proper precautions.
I'm trying to machine some carbon fiber sheets to make CF wing frames. I've posted some pics of my first attempt. It went okay but I need a better way of fixturing the sheets. I begin with facing the 0.8mm sheets to 0.15mm with a 1/4" flat endmill. I then proceed with cutting the inner contours of each wing with a 1mm endmill; followed by the outer contours to release them from the sheet. I am using a small table top CNC Baron at 1500rpm. Each side is 1mm wide and 0.15 thick except for the triangular base; which is the original 0.8mm.
I plan to try a double sided tape method to hold them down next. I would like to get a tape that holds, but also doesn't leave a residue on the frames. It's also necessary that they be removed easily, possibly with acetone.
I thought of a vacuum chuck system but when I get to the through contours I wouldn't want to damage the chuck.
Any fixturing suggestions would be helpful. Also, tool wear with eventually be a problem. Any suggestions regarding tooling would also be helpful. I don't know if diamond coated burrs will cut at these speeds (plus they're sort of expensive).
Thanks.
PS: I understand the hazards associated with the process. I'm taking the proper precautions.