Manufacturing Time Estimate

Mold Fabrication:	Time
Base	Lathe Core: Mill Core: Lathe Cavity: Total Tool Change Machine Setup	7m 3m 2m 1m 10m
Dome	Lathe: Mill: Lathe Tool Change: Machine Setup:	1m 12.90s 2.04s 30s 10m
Spinner	Core: Cavity: Total Tool Change: Machine Setup:	30m 8m 30s 10m
Earth	Core: Cavity: Total Tool Change: Machine Setup	3m 6.44s 3m 15.9s 1m 10m
Ring	Lathe Cavity: Lathe Core: Core Mill: Tool Changes: Machine Setup:	3m 6.44s 5m 37.68s 7m 58.51s 1m 10m
Total		133min
Part Fabrication	Time/1 yoyo	Time/100 yoyos
Base	131s	3.6hrs
Dome	10s (not including cutout)	20m (Including loading material)
Spinner	105s	2.9 hrs
Earth	90s	2.5hrs
Ring	80s	2.2 hrs
Assembly	215s	8.3hrs
Total	631s	20 hrs

We used the injection molding notes from lecture to evaluate process time for making each part. Thicker take longer to inject, pack, and cool so we accounted for additional time in our thicker parts. We used Mastercam to automatically calculate time to cut the molds, and included setup and tool change time for each mold in order to keep our time estimates conservative. We estimated assembly time thinking about each part being added in assembly line fashion. The assembly time accounts for stamping paint on the Earth piece, putting together all the pieces for both sides of the yoyo, screwing them together, and tying on the string. In conclusion the time from making the molds to full assemble will be 20 hours and the time to make the molds will be 2 hours and 13 minutes.  This has extended our time allotted to manufacture the molds by 2 days, everything else remains on the same schedule.  

Here is the link to our updated schedule.