Final project/Competition

We finished our machine in time for the time trial. We ended up having to modify very little on own final project when compared to the CAD model. This was very good for us because it cut down on the assembly and designing time, allowing us to get the project done. We had some trouble with breaking taps inside of the milled holes. This was because we used a lot of screw holes and we used really small screw holes. Whenever one of these broke we would have to re-make the part, this obviously makes the assembly time go up.



We did very well in the time trial scoring 96 points. This was less then we predicted earlier in the year when we calculated our expected score. But this score was good enough to get us seeded 3rd for the actual tournament. At the tournament our machine did very well in the first round winning it pretty easily. In the second round we started out well, but had a driving error and fell into our own hole. The other team barley had enough time to score as much as we did in the first few seconds. This was very unfortunate because we felt that we could have done much better in the tournament. However we felt that the project was a success because we did well compared to other teams.
                   

                                                                               Bill of Materials

Item #	Description	Use	Dimensions (in)	Supplier	Qty	Material	$ Price
1	Top	Top of frame	1/4 x 12 x 18	kit	1	Acrylic	12.07
2	Arm 1, Arm 2	Arms	1/16 x 1.6 x 10	kit	2	Alum 6061	1.2
3	Base Side, Base Side 2	Sides of frame	1/4 x 1.6 x 5.25	kit	2	Alum 6061	2.16
4	Base Back	Back of frame	1/4 x 1.6 x 9	kit	1	Alum 6061	1.84
5	Base Round	Inner round frame	1/16 x 1.6 x 14	kit	1	Alum 6061	0.84
6	Wheels	Wheels	5(r) x 1(w)	McMaster	2	Rubber	5.5
7	Double Gearbox	Drive wheels	2.75 x 2.25	kit	1	Plastic	8.75
8	Shaft mount	Support Axle	1/4 x 1 x 1	kit	4	Alum 6061	1.66
9	Coupling Shaft	Drive axle	.84 x 3/8	kit	2	Alum 6061	0.22
10	Crossbar	Support frame	1/4 x 1/2 x 8.5	kit	1	Alum 6061	0.16
11	#6-32 Screws	Drive train to top	1/4	crib	10	SS
12	#4-40 Scews	Control box to base	1/4	crib	2	SS
13	#4-40 Scews flat head	Base Round to frame	1/2	crib	11	SS
13	#4-40 Scews	Top to crossbar	3/8	crib	2	SS
14	#4-40 Scews	Scoop to Scoop Arm	3/8	crib	8	SS
15	#4-40 Scews	Top to Base	1/2	crib	17	SS
16	#4-40 Scews	Scoop Mount to top	3/8	crib	4	SS
17	#4-40 Set Screw	Coupling shaft	1/4	crib	2	SS
18	Wheel Axle	Drive wheels	4x0.375	kit	2	Alum 6061	2.16
19	Axle to Motor Connector	Drive axle	3/8	kit	2	Plastic
20	Bearings	Support axle	3/8	McMaster	4	SS	2.44
21	Control Box Holder	Control box holder	1/16 x 3 x 6	kit	1	Alum 6061	0.68
22	Control Box	Control motor	2 x 5	kit	1	Plastic
23	Shovel Arm	Scoop Assembly	4 x .5	kit	2	Delrin	0.24
24	L Bracket	Scoop Assembly	1 X .5 x 1/16	kit	2	Alum 6061	0.04
25	Scoop	Scoop Assembly	15 X 2 x 1/8	kit	1	Delrin	1.86
26	Shovel Axle	Scoop Assembly	6 X .25	kit	1	Alum 6061	0.19
27	Gear	Scoop Ax to Plnt Box	1 x 1	kit	2	Plastic	2.66
28	Gearbox Assy.	Planatary Gearbox	4 x 2 x 2	kit	1	Plastic	14.25
29	Scoop Axle Mount	G-box/Scoop to top	.25 x 1 x .75	kit	3	Alum 6061	0.93
30	Planatary Couple	Plnt Box to Axle	1.5 x .25	kit	1	Alum 6061
31	Scoop Bushing	For Scoop Axle Mnt	.5 *.25	kit	3	SS	1.29
							Total: $61.14