Coffee grinder
From DDL Wiki
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| colspan="8" align = center| '''Grinding Chamber Sub-Assembly''' | | colspan="8" align = center| '''Grinding Chamber Sub-Assembly''' | ||
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| 1 || Lid || 1 || 66 || Contains coffee || Plastic || Blow Molded || [[Image:Team6_Part_1.jpg|100px|center]] | | 1 || Lid || 1 || 66 || Contains coffee || Plastic || Blow Molded || [[Image:Team6_Part_1.jpg|100px|center]] | ||
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Revision as of 14:48, 29 January 2014
Contents |
Executive Summary
Primary Stakeholders and Product Needs
Product Function and Use
User Study
Mechanical Function
List of Parts
The following details the list of parts of a hands-free coffee grinder.
Bill of Materials
Part Number | Name | Quantity | Mass (g) | Function | Material | Manufacturing Process/ Purchased Component | Image |
---|---|---|---|---|---|---|---|
Grinding Chamber Sub-Assembly | |||||||
1 | Lid | 1 | 66 | Contains coffee | Plastic | Blow Molded | |
2 | Flat Head Screws | 3 | <1 | Cup to Scatter Shield | Steel | Catalog Purchase | |
3 | Female Drive Adapter | 1 | 6 | Provides Torque to Blade Assy | Plastic | Injection Molding | |
4 | Rubber Nipples | 3 | <1 | Vibration Isolation & Noise Reduction | Rubber | Die Cut | |
5 | Plastic Washer | 1 | <1 | Reduces friction of Blade Assy | Plastic | Catalog Purchase | |
6 | Cup | 1 | 46 | Provides References for Coffee Bean Measuring | Plastic | Injection Molding | |
7 | Scatter Guard | 1 | 15 | Contains Coffee Beans behind the Blade | Tin | Stamped | |
8 | Dust Shield | 1 | 3 | Separates the Grinding Chamber and the Drive Assy | Plastic | Injection Molding | |
9 | Blade-Adapter Shaft | 1 | 2 | Transmits Torque from Part 3 to Part 13 | Plastic | Catalog Purchase | |
10 | Blade Gasket | 1 | <1 | Seals Blade Assy | Rubber | Injection Molding | |
11 | Blade Washer | 1 | <1 | Reduces friction of Blade Assy and Provides Axial Preload | Steel | Catalog Purchase | |
Blade Sub-Assembly | |||||||
12 | Blade Hub | 1 | 2 | Connects blade to drive shaft | Plastic | Injection Molding | |
13 | Blade | 1 | 3 | Grinds Coffee | Stainless Steel | Stamped | |
Cord Housing Sub-Assembly | |||||||
14 | Tamper Proof Screw | 1 | <1 | Connects cord housing assembly to main body | Steel | Purchased Part | |
15 | Rubber Foot Pad | 3 | <1 | Prevents Device from Slipping | Rubber | Stamped | |
16 | Cord Reel Container | 1 | 17 | Contains Cord While Wound | Plastic | Blow Formed | |
17 | Screw | 3 | <1 | Mates Part 19 to Part 28 | Steel | Purchased Part | |
18 | Power Cord Reel Center | 1 | 3 | Cord Capstan | Plastic | Injection Molded | |
19 | Power Cord Reel | 1 | 26 | Captures Cord | Plastic | Injection Molded | |
20 | Internal Motor Gasket | 2 | 3 | Seals Motor Components | Rubber | Injection Molding | |
21 | Screw For Part 22 | 2 | 1 | Mates Part 22 to Part 28 | Steel | Purchased Part | |
22 | Power Cord Retention Clip | 1 | 2 | Positively Retains The Power Cord Inside The Housing | Plastic | Injection Molding | |
23 | Tiny Spring | 1 | <1 | Provides Preload to the Safety Mechanism | Steel | Purchased Part | |
24 | Safety Paper | 1 | <1 | Reduces Abrasion of Safety Switch | Plastic | Stamped | |
25 | Electrical Switch Cover | 1 | 1 | Houses Electric Switch | Plastic | Injection Molded | |
26 | Electrical Switch Lead | 2 | 1 | Provides Current to Electrical Switch | Copper | Purchased Part | |
27 | Mechanical Switch | 1 | 1 | Actuates the Safety Switch | Plastic | Injection Molded | |
28 | Motor Housing | 1 | 47 | Secures motor to device | Plastic | Injection Molded | |
AC Motor Sub-Assembly | |||||||
29 | Brushes | 2 | <1 | Provides Current to Commutator | Carbon | Electronic Component | |
30 | Motor Shaft Cap | 1 | <1 | Transmits Torque from Part 42 to Part ?? | Plastic | Injection Molded | |
31 | Shaft Insulator | 1 | <1 | Provides Mechanical and Electrical Insulation to the Shaft | Fiber | Stamped | |
32 | Spring Washer | 1 | <1 | Provides Axial Preload to locate the commutator with respect to the bushings | Copper | Purchased | |
33 | Small Brown Washers | 4 | <1 | Locates Part 42 Axially | Plastic | Stamped | |
34 | Large Orange Washers | 2 | <1 | Locates Part 42 Axially | Plastic | Stamped | |
35 | Small Metal Washers | 2 | <1 | Locates Part 42 Axially | Steel | Purchased | |
36 | Bearing | 2 | 2 | Locates Part 42 Radially | Steel | Purchased | |
37 | Brush Side Bracket | 1 | 17 | Locate Part 36 on Brush Side | Steel | Stamped and Bent | |
38 | Non-Brush Side Bracket | 1 | 16 | Locate Part 36 on Non Brush Side | Steel | Stamped and Bent | |
39 | Brush Housing | 2 | 1 | Constrains Part 29 | Plastic | Injection Molded | |
40 | Stator Coil | 2 | 13 | Provides Magnetic Poles | n/a | Electronic Component | |
41 | Steel Inductor Plate | 30 | 4 | Enhances Magnetic Poles | Steel | Stamped | |
42 | Rotor | 1 | 77 | Provides Motor Torque | n/a | Electrical Component | |
43 | Circuit Board | 1 | 28 | Assembly | Electrical Component | ||
56 | Male Drive Adapter | 1 | 15 | Plastic | Injection Molded | ||
Knob Sub-Assembly | |||||||
44 | Power Button | 1 | 2 | Allows user to operate grinder | Plastic | Injection Molded | |
45 | Power Button Finger | 1 | <1 | Translate power button movement to connect circuit | Plastic | Injection Molded | |
46 | Knob | 1 | 8 | Allows user to adjust fineness of grind | Plastic | Injection Molded | |
47 | Circuit Board Connector | 1 | <1 | Connects fineness knob circuit | Copper | Stamped | |
48 | Power Button Spring | 1 | <1 | Returns power button after press | Steel | Purchased | |
49 | Knob Screws | 4 | <1 | Fastens knob sub-assembly | Steel | Purchased | |
50 | Detent Springs | 2 | <1 | Pushes ball bearings for discrete adjustment of knob | Steel | Purchase | |
51 | Detent Bearings | 2 | <1 | Allows for discrete adjustment of knob | Steel | Purchased | |
52 | Detent Housing | 1 | 2 | Contains detent components in knob | Plastic | Injection Molded | |
53 | Brush | 1 | 3 | Cleans coffee grinds | Plastic | Injection Molded | |
54 | Body | 1 | 74 | Houses inner components | Plastic | Injection Molded | |
55 | Power Cord | 1 | Supplies electrical current from outlet to grinder | Assembly | Purchased |
Design For Manufacturing and Assembly (DFMA)
Failure Modes and Effects Analysis (FMEA)
Design for Environment (DFE)
Team Members
Phil Aufdencamp
Justin Barsano
Kristen Hauser - General Organization
Brian Tang
References
Dieter, George E., and Linda C. Schmidt. Engineering Design. 4th Edition. New York, NY: McGraw-Hill, 2009. Print.