Transcript Power_Point.ppt

We are designing a mountain bike for
the purpose of hucking, which is the
act of taking large drops.
DH Rig
Design Guide
Head tube
Will be made on a CNC lathe, and out of aluminum round stock.
Bottom Bracket
Is going to be constructed on a CNC Milling Machine, and out of
aluminum round stock.
Rear Axel Mounts and Derailleur Hanger
Are made on a CNC Milling Machine, out of aluminum stock.
Shox Mounts
Made from aluminum stock, and made on a Wire EDM Machine.
Tubes
All tubes will be sculpted on a CNC Machine, and hand welded together
with a TIG Welder. Tubing will be 7005 series aluminum.
Presumed Process Capabilities
Skeleton Sketch
This sketch controlled the
size and angles of the front
triangle
Process
Milling
Min Tolerances
 +/- .05 mm
Lathe
 +/- 0.05mm
Wire EDM
 +/- .03 mm
Drilling
 +/- .1 mm on
size, shape,
alignment
Geometric Restrictions
 No sharp inside corners
 No small detail in narrow
deep locations
 No small detail in narrow
deep locations
 No burn marks
 No black marks
 Holes only
Minimum Assembly Clearances
Parts
Tubing Assembly Angles
Min Clearances
.05 degree
Frame to be assembled in a assembly Jig.
Spring 2005
Aaron Todd
MEC 1012
Tim White
Design Communication 2
Paul Sokolowski