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Revision as of 19:12, 30 January 2014

Product Introduction

Product: Hamilton Beach 12-Cup Coffee Maker

Executive Summary

Major Product Needs for Major Stakeholders

Customers A customer wants it to be easy to setup, easy to figure out the right proportions, and easy to dispense. Coffee shouldn’t come out burnt, and should be quick and reliable.

Retailer The retailer demands small packaging and arrangeable for stacking and shipping. The current design has large rectangular packaging and fairly light weight.

Product Use Study

What's Easy? Easy to plug in and turn on. Coffee maker shows amount of water labeled and visible.

What’s Non Intuitive? Not easy to tell if its programmable. Also, figuring out if it needs cleaning and how to clean it.

What’s Challenging? Difficult to figure out proportions of water to ground coffee. Figuring out the first steps for draining out the plastic residue as stated on the instruction manual.

Steps for Using Product: 1) Wash the coffee maker following the cleaning instructions on the pamphlet packaged with the product. 2) Plug in the coffee maker to an outlet. Do not turn on. 3) Have a cone shaped coffee filter ready and place it inside the plastic filter basket. 4) For one cup of medium strength coffee, have one tablespoon of ground coffee ready and dumped into the coffee filter. 5) Fill the glass pitcher with one cup of water, then lift the coffee maker lid and dump the water into the back bin of the coffee maker. 6) Place the glass pitcher back inside the coffee maker onto the hot plate. 7) Close the coffee maker lid and turn on the coffee maker.

Mechanical Operations: First observations about the mechanics behind the coffee maker include a pump inside the base to channel hot water through the coffee lid and into the coffee filter, where hot water seeps down into the glass pitcher. The coffee maker lid acts to open up the coffee maker channel of bringing hot water up and into the coffee filter. There is an electric heater to bring the poured water up to very hot temperatures.

Parts List

The following table is a list of all the parts that come out of the coffeemaker. The picture below is an exploded view of our coffeemaker with all the components shown and labeled.

Bill of Materials

The following is a table of individual components, assemblies and certain off the shelf parts that we took apart during our dissection process of the coffeemaker.

Part Number	Name	QTY	Weight (g)	Function	Material	Manufacturing Process	Image
1	Cubic Peg for Metal Strip	1	0.79	Holds the metal strip that goes around the glass container	Plastic	Injection Molding
2	Screw for the Glass Container	1	1.30	Tighten up the metal strip	Aluminum	Standard Purchase Part
3	Lid for the Glass Container	1	16.12	Lid of the Glass Container	Plastic	Injection Molding
4	Metal Strip for the Glass Container	1	15.60	Goes around the glass container	Aluminum	Rolling and Machining
5	Handle for the Glass Container	1	39.77	Handle of the glass container	Plastic	Injection Molding
6	Filter Lever	1	1.92	A spring controlled lever within the filter that allows the boiled coffee to go into the glass container	Plastic	Injection Molding
7	Filter Spring	1	0.41	Attached to the filter lever and controls and coffee flow	Aluminum	Standard Purchase Part
8	White Filter Rubber Piece	1	0.24	Cover of a hole within the filter	Rubber	Injection Molding
9	Filter	1	42.27	Perform as a intermediate container for the boiled water and ground coffee	Plastic	Injection Molding
10	Plastic Lid	1	87.43	Lid for the coffeemaker and carries hot water to coffee	Plastic	Injection Molding
11	Cardboard Piece	1	6.72	Covers the area of thermal paste that applied onto the heater	Cardboard	Standard Purchase Part
12	Bottom Screws	5	0.57	Tighten the bottom lid with the bottom half of the coffeemaker	Aluminum	Standard Purchase Part
13	Plastic Bottom Lid	1	89.69	Cover for base of the coffeemaker	Plastic	Injection Molding
14	Plastic Ring	1	37.56	Holds heating plate	Plastic	Injection Molding
15	Insulator Rubber Band	1	12.50	Insulation for the heater plate	Rubber	Injection Molding
16	Heater Plate	1	89.28	Keeps the glass container heated and in place	Aluminum	Casting
17	Heater Plate Screw	1	2.48	Attach the heater plate to the bottom lid of the coffeemaker	Steel	Standard Purchase Part
18	Rectangular Lid Piece	1	1.63	Supports the coffeemaker lid when it is open	Plastic	Injection Molding
19	Rubber Tube Rings	4	0.55	Tighten and put the tubes in place	Copper	Machining
20	Heater Bar	1	20.22	Holds the heater in place	Aluminum	Extrusion and Machining
21	Heater	1	110.86	Heats both the water and the container	Aluminum	Casting
22	Resistor Piece	1	9.47	Part of the heater circuit	Assembly	Standard Purchase Part
23	Little Screw for Plastic Wire Piece	2	0.61	Holds wire in place	Aluminum	Standard Purchase Part
24	Slightly Larger Screw for Heater	1	0.66	Holds heater in place	Aluminum	Standard Purchase Part
25	Nut for Heater Screw	1	1.21	Holds the heater in position within the coffeemaker	Aluminum	Standard Purchase Part
26	Plastic Piece for Wires	1	0.55	Functions as a connector for the wires that go into the heater	Plastic	Injection Molding
27	Smaller Screw	6	0.63	Attaches heater plate to coffee machine base	Aluminum	Standard Purchase Part
28	Washer for Smaller Screw	6	0.50	provides greater purchase for smaller screws	Aluminum	Standard Purchase Part
29	Top-Bottom Connection Screw	3	0.58	Connect the top and bottom half of the coffeemaker	Aluminum	Standard Purchase Part
30	Lid Lever	1	14.13	Supports the lid	Plastic	Injection Molding
31	Plastic Volume Meter	1	38.3	Meter of the coffeemaker	Plastic	Injection Molding
32	Lid Hinge Connected to Tubes	1	12.07	Connection between the lid and tubes	Plastic	Injection Molding
33	Transparent Tube	1	4.2	carries water to the coffee maker lid	Rubber	Injection molding
34	Opaque Tube	2	8.23	Carries water to and from the heater	Rubber	Injection molding
35	Red Ball	1	0.09	Part of the valve in the opaque tube	Plastic	Injection Molding
36	Base of Switch	1	0.85	Base of the switch	Plastic	Standard Purchase Part
37	Switch	1	0.53	Control on/off of the coffeemaker	Plastic	Injection Molding
38	Tiny Spring	1	<0.01	Part of the switch	Aluminum	Standard Purchase Part
39	Tiny Piece from the Switch	1	0.26	Part of the switch	Plastic	Standard Purchase Part
40	Red Heating Connection	2	0.10	Insulates the wire to heater connection	Rubber	Standard Purchase Part
41	Wires Coming out from the Heater	2	0.83	Carries current to heater	Aluminum	Standard Purchase Part
42	White Capacitor Screw	2	0.39	Put the capacitor in place	Aluminum	Standard Purchase Part
43	Washer for Capacitor Screw	2	0.11	Washer for screw	Aluminum	Standard Purchase Part
44	N label	1	<0.01	Label negative of the circuit	plastic tape	Standard Purchase Part
45	Switch with Three Wires	1	6.11	Inside part of the switch	Assembly	Standard Purchase Part
46	Blue Wire	1	0.85	Carries current from switch to heater wires	Copper and Fiber	Standard Purchase Part
47	White Wire	1	1.14	Carries current from switch to heater wires	Copper and Fiber	Standard Purchase Part
48	Power Cord	1	50.17	Carries current from outlet to coffee maker	Copper and Rubber	Standard Purchase Part
49	Glass Container	1	332	Coffee Container	Glass	Glass Blowing
50	Top Part of Body	1	296	Top half of the coffeemaker	Plastic	Injection Molding
51	Bottom Part of Body	1	196	Bottom half of the coffeemaker	Plastic	Injection Molding

Design For Manufacturing and Assembly (DFMA)

Failure Modes and Effects Analysis (FMEA)

Scale for Severity, Occurrence, and Detection of Failure

Design for Environment (DFE)

Analysis Summary

Group 8 Team Members

Lucas Neffa

Andrew Vickory

Nick Ciesielski

Yang Wen

Kaifu Wang

References

1. Dieter, George E., and Linda C. Schmidt. Engineering Design. 5th Edition. New York, NY: McGraw-Hill, 2012. Print.

2. Hamilton Beach 12-Cup Coffee Maker, n.d. photograph, viewed 28 January 2014, <http://www.amazon.com/gp/product/B002EJF8TI/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1>