Goals

Manufacturing Breakdown

Demtool...

In-house...

Notes...

Compromise: make lightening pattern not as dense, room to add holes as we go
- Remember this doesn't have to be

3D Printing Sponsor...

Demtool...

In-house...

Demtool...

In-house...

Eye joint mounts (x4) -> waterjet, then mill down faces, add PEMs to some
Diff shaft mount (x1) -> waterjet
Nylon blocks (x2) -> mill slot, then slice, do holes for heat set inserts, add heat set inserts
Diff shaft -> cut, do retaining ring groove on lathe, drill and tap end
Turn buckles -> cut, thread
3/8" bar (x1) -> or routed
Chassis mount

Member	Commitment for Winter	Action Items
Former user (Deleted) (Chassis)	6-10 hrs/week?
Former user (Deleted) (Wheel connections)		Send Emily bearing!!!!!!!!! Fix main assembly with wheel hub subassembly
Emily Adam (Differential bar)	6-10 hrs/week?
Former user (Deleted) (Frame/structure)	?	Beef up bogie connector thickness? Apparently survived FEA tho
Former user (Deleted)

........we need to recruit.............

Tips from Mechanical peeps
- Four decimals for millimeters is pretty much impossible
- Austin's rule of thumbs (metric):
  - Hole locations → 3 decimals
  - Surfaces/shapes, less critical → 2 decimals
  - For COTS, check if they have recommended ISO fits or housing fits
  - Min. 3 thread engagement, but ideally more → 1.5x bolt diameter for threaded holes
  - If we need a specific hole size on the waterjet, better to undercut and then drill it out
- Use relief notches to move the bend radius
  - Specific numbers can be found from Protolabs, Protocase, etc.
- Specify ISO fits for critical dimensions. Can use ISO calculator and ISO preferred fits for personal reference
- Student machine shop mills have a bolt radius tool !!! And multiple datums
- M4/5 for basic mounting, M3 for small, M6/8 for big
- Flanged socket heads!!!!!
- Check out PEM nuts requirements on Penn Engineering website
Preloading is what the clamping force comes from, preload above vibrational rating