Sunday, March 16, 2014

Meeting Notes

Blog should have at least one update weekly (what we did that week, what went well, what our problems were). 

Report 3: (not due this Wednesday)
Make the molds: Do they work? Do we have to redesign it?
If yes: We redo report two.

Redo ghant chart? Nope.
Clothing:, underwear and socks.

Parts (progress/who):
Top Ring (Andrea/Tyler/Ola)
Inner Ring (done)
Bubble (done)
Housing/agitator (Chee/Doug)
Clothes (Andrea/Jody)


To Do (By Tuesday):
n  Redesign SW of yoyo and molds (make the top ring turnable [increase channel width to fit tools, minimum 0.08], increase the circumference of housing to be flush with the upper ring, redo the agitator to be thicker and shallower. Make sure to add fillets. Insert screw/nut hole)
o   Need to get the dimensions of the screw we’re using.
n  Mastercam:
o   Agitator/housing (Chee and Doug work on this)
o   Top ring (Andrea/Tyler do the lathe, Ola is doing the milling/engraving))

Tuesday:
n  Give the Daves our list to order (O-ring, material for clothing)
n  Go over mastercam, redo if needed.

Wednesday
n  Machine all the molds


Dropbox link for parts

https://www.dropbox.com/sh/nierlz2an8xhsjd/ChlAQ4hUk6

Wednesday, March 12, 2014

The thermoform and injection mold

Just for our reference, these are the machines we will use for producing our parts:

The Thermoforming Machine

The Injection Molder

Report 2 Updates



Plastic Ring Bottom Mold Lathe code: 

N1G20 
(TOOL - 9 OFFSET - 9) 
(ROUGHING TREPAN, .077WIDE INSERT - NONE) 
N2G0X14.Z7. 
N3G0T0909 Tool: roughing Trepan 
N4G97S1200M03 
N5G0X2.3098Z.05M8 
N6G99G1Z-.01F.003 
N7G0Z.05 
N8X2.4209 
N9G1Z-.01 
N10X2.3987Z.0011 

Plastic Ring Top Mold Mill code: 

N1T12M26S2000 
N2G0G90G54X-5.65Y-.0001 
N3Z.1 
N4G1Z0.F5.M8 
N5X.9F20. 
N6G2X1.3687Y-.4688R.4687 
N7X.9Y-.9376R.4687 
N8G1X-4.9 
N9G3X-5.3687Y-1.4063R.4687 
N10X-4.9Y-1.875R.4687 
N11G1X.9 
N12G2X1.3687Y-2.3437R.4687 
N13X.9Y-2.8124R.4687 
N14G1X-4.9 
N15G3X-5.3688Y-3.2812R.4688 
N16X-4.9Y-3.7499R.4688 
N17G1X1.65 
N18G0Z.1 
N19T9M26S4000 
N20G0G90G54X-.9685Y-2.5899 

Housing and Actuator Bottom Mold Lathe code: 

N1G20 (TOOL - 10 OFFSET - 10) 
(LARGE BORE, .03125 RADIUS INSERT - NONE) 
N2G0X14.Z7. 
N3G0T1010 
N4G97S1200M03 
N5G0X.129Z.05M8 
N6G99G1Z-.01F.015 
N7G0Z.05 
N8X.191 
N9G1Z-.01 
N10X.1786Z-.0038 
N11G0Z.05 
N12X.253 
N13G1Z-.01 
N14X.2406Z-.0038 
N15G0Z.05 
N16X.315 
N17G1Z-.01 
N18X.3026Z-.0038 
N19G0Z.05 
N20X.377 

Housing Shrinkage Calculation

Shrinkage was calculated by measuring 3 yoyos from 6 different molds with varying thicknesses, plotted in the following graph as function of their thickness. A region ballpark was identified.We then calculated weighted average using only data from nearby thickness profiles.

Process Plan