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Revision as of 00:33, 29 January 2014

List of Parts

The following details the list of parts of a hands-free coffee grinder.

Coffee Grinder Exploded View

Parts list table

Part Number	Name	Quantity	Mass (g)	Subassembly	Function	Material	Manufacturing Process/ Purchased Component	Image
1	Dustcaps	2	<1	Crank Assembly	Keep dirt out of bottom bracket	Plastic	Injection Molding
2	Lock nuts	2	6	Crank Assembly	Retainment/Assembly	Steel	Catalog Purchase
3	Nut w/ integrated lock washer	2	16	Crank Assembly	Retainment/Assembly	Steel	Catalog Purchase
4	Toe strap holders	2	6	Pedals	Ability to secure toe	Plastic	Injection Molding
5	Flange nut	4	<1	Pedals	Attach toe strap holder to foot grip	Steel	Catalog Purchase
6	Screw w/ integrated washer	4	<1	Pedals	Attach toe strap holder to foot grip	Steel	Catalog Purchase
7	Screw	8	<1	Pedals	Attach foot grip to pedal	Steel	Catalog Purchase
8	Pedal cap	2	<1	Pedals	Keep dirt out of pedals	Plastic	Injection Molding
9	Foot grip	2	27	Pedals	Prevent foot from slipping off pedal	Aluminum	Die Casting
10	Outer jam nut	2	9	Sprocket Assembly	Retainment/Assembly	Steel	Catalog Purchase
11	Washer	2	<1	Sprocket Assembly	Retainment/Assembly	Steel	Catalog Purchase
12	Inner jam nut	2	7	Sprocket Assembly	Retainment/Assembly	Steel	Catalog Purchase
13	Pedal	2	54	Pedals	Central Component in Pedals	Aluminum	Die Casting
14	Ball bearings	24	<1	Pedals	Friction Prevention	Steel	Catalog Purchase
15	Nut	2	3	Pedals	Retainment/Assembly	Steel	Catalog Purchase
16	Double D Washer	2	<1	Pedals	Catalog Purchase	Steel	Catalog Purchase
17	Nut w/ seat for ball bearings	2	5	Pedals	Retainment/Assembly	Steel	Catalog Purchase
18	O-ring	2	<1	Pedals	Keeping lubricants inside pedal	Rubber	Catalog Purchase
19	Chain	1	304	Drivetrain	Drive rear sprocket using rotation of front sprocket	Steel	Stamping and Pressing
20	Crank	1	260	Spindle/Crank Assembly	Lever arm for force from foot	Steel, aluminum	Die Casting
21	Crank w/ sprocket	1	626	Spindle/Crank Assembly	Transfers force to chain	Steel	Assembly - Stamping and Die Casting
22	Rear sprocket	1	82	Rear Hub Assembly	Sees force from chain and sends it to the tire	Steel	Stamping with Post Machining
23	Bearing	2	19	Rear Hub Assembly	Reduces system friction	Steel, Aluminum	Catalog Purchase
24	Rear wheel	1	?	Rear Hub Assembly	Interface between rear sprocket and ground	Steel, Rubber, Aluminum	Assembly - Catalog Components Mated with a CNC lathed hub
25	Rear axle	1	101	Rear Hub Assembly	Allows wheel to move	Steel	CNC Lathing
26	Sprocket retaining ring	1	15	Rear Hub Assembly	Holds sprocket components together	Steel	Catalog Purchase
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