Windshield wiper assembly 2
From DDL Wiki
(→Major Post-Production Stakeholders) |
(→DFMA) |
||
Line 498: | Line 498: | ||
+ | === Manufacturing === | ||
+ | |||
+ | |||
+ | {|class="wikitable" border ="1" cellspacing="0" align="center" style="text-align:center" | ||
+ | |||
+ | |- | ||
+ | ! colspan="2" style="background:#efefef;" | Design for Manufacturing | ||
+ | |||
+ | |- | ||
+ | ! style="background:#efefef;" | Guideline | ||
+ | ! style="background:#efefef;" | Comments | ||
+ | |||
+ | |- | ||
+ | | '''Minimize Part Count:'''<br />Eliminate fasteners, part consolidation | ||
+ | | One motor<br />Remove extra bolts | ||
+ | |||
+ | |||
+ | |- | ||
+ | | '''Standardize Components:'''<br />Take advantage of economies of scale & known component properties | ||
+ | | Different bolt sizes<br />Different sized grommets that performed similar functions<br />Adjustable length for use in range of vehicle models<br />Standardized C-channel and tube size, standardized motor <br />Standardized cast housing | ||
== FMEA == | == FMEA == |
Revision as of 00:16, 2 February 2011
Contents |
Report 1 - Product Analysis: Competitor Study
Executive Summary
Major Post-Production Stakeholders
A list of the major stakeholders of the competitors product was generated as long as a listing of their primary concerns with regard to the product. The benefit of this process is the expansion it has on our own awareness of the product since the redesign will be focused on benefiting these stakeholders and addressing their concerns in the most effective manner. Additional stakeholders or stakeholder concerns, along with a more quantitative understanding of the importance of these concerns, will be generated after more market research has been completed.
• User ○ Resistance to corrosion ○ Unobtrusive ○ Effective ○ Cheap to replace ○ Long lasting blades ○ Long lasting structure ○ Safety ○ Doesn't damage the car ○ Aesthetics ○ Cleans heavy snow ○ Cleans entire windshield ○ Doesn't streak ○ Doesn't ice over ○ EZ to store blades ○ Wider fluid dispersal • Car retailer ○ Cheap to manufacture ○ Appeals to the user • Shop workers ○ Standardized ○ Difficult to replace ○ EZ to repair ○ Modular ○ Safety • Car manufacturer ○ Cheap to manufacture ○ Safety, No VOC ○ Easy to assemble/install • Parking Police ○ EZ to put ticket under • Wiper Retailer ○ Standardized ○ Low Cost • Other Cars on the road ○ Effective ○ Cleans entire window
Product Usability Study
Assembly
Product Operation
Dissection Exercise
Bill of Materials | ||||||||
---|---|---|---|---|---|---|---|---|
Part Number | Sub-Assembly | Part Name | Quantity | Weight (in g) | Function | Manufacturing Process | Material | Image |
Base Structure |
| |||||||
1 | Driver Side Wiper Casing | 1 | 111 | Protect Arm 3 (driver side) wiper mount linkage | Cast | Aluminum | Image:.jpg
| |
2 | Passenger Side Wiper Casing | 1 | 212 | Protect Arm 3 (passenger side) wiper mount linkage | Cast | Aluminum | Image:.jpg | |
3 | U-Shaped Connection Bar | 1 | 259 | Connect driver and passenger side wiper mount casings | Stamping | Steel | Image:.jpg | |
Vibration Mount (large) | ||||||||
4 | Metal Grommet Insert (large) | 2 | Stabilizes vibration mount by holding onto chassis | Extended and expanded | Steel | Image:.jpg | ||
5 | Rubber Mount (large) | 2 | Vibration dampening | Molding | Rubber | Image:.jpg | ||
Vibration Mount (small) |
| |||||||
6 | Metal Grommet Insert (small) | 1 | Stabilizes vibration mount by holding onto chassis | Extended and expanded | Steel | Image:.jpg
| ||
7 | Rubber Mount (small) | 1 | Vibration dampening | Molding | Rubber | Image:.jpg
| ||
Arm 1 |
| |||||||
8 | Arm 1 Linkage (w/ plastic ball-in-socket joint) | 1 | 53 | Transfers drivetrain's rotational motion 90 degrees to linkage mechanism's plane | Steel tube crushed and welded. Hole drilled, ball-in-socket joint stamped in. | Steel | Image:.jpg
| |
9 | Lock Washer | 1 | 2 | Distribute nut pressure | Steel | Image:.jpg
| ||
10 | Nut | 1 | 3 | Attach Arm 1 to drivetrain | Tapping | Steel | Image:.jpg
| |
Arm 2 | ||||||||
11 | Arm 2 Linkage (w/ plastic ball-in-socket joint) | 1 | 149 | Transfer motion | Steel tube crushed and welded. Hole drilled, ball-in-socket joint stamped in. | Steel | Image:.jpg
| |
Arm 3 |
| |||||||
12 | Arm 3 linkage (w/ plastic ball-in-socket-joint) | 2 | Transfer motion | Steel | Image:.jpg | |||
13 | Wiper Mount Pin | 2 | Transfer motion | Steel | Image:.jpg
| |||
14 | Plastic Cover | 2 | 2 | Prevent fluid from seeping into linkage area | Injection Mold | Plastic | Image:.jpg
| |
15 | Screw-On Cap | 2 | 11 | Protect Wiper Mount Pin | Cast and Threaded Die | Steel | Image:.jpg
| |
Arm 4 |
| |||||||
16 | Arm 4 linkage [Length: 20.5" (52 cm) | 1 | 177 | Transfer motion | Image:.jpg
| |||
Other |
| |||||||
17 | Top Washer | 1 | 1 | Steel | Image:.jpg
| |||
Gear Casing |
| |||||||
18 | Gear Casing Cover Screws | 4 | <1 | Attach cover to casing | Die | Steel | Image:.jpg
| |
19 | Drivetrain Mounting Bolts | 3 | 5 | Mount drivetrain to base | Die | Steel | Image:.jpg | |
Motor |
| |||||||
20 | Motor Mounting Bolts (w/ Lock Washer) | 4 | 5 | Mount motor to base | Die | Steel | Image:.jpg
| |
21 | Motor Mounting Nuts | 4 | 3 | Mount motor to base | Tapping | Steel | Image:.jpg
| |
22 | Motor | 1 | Convert electric current via EMF to rotation of a linear worm gear | Standard purchased part | Image:.jpg
| |||
Windshield Wiper |
| |||||||
23 | Wiper | 2 | Rotate about pin and sweep across windshield | Plastic | Image:.jpg
| |||
24 | Blade | 2 | Remove water or other debris from windshield | Rubber | Image:.jpg |