Difference between revisions of "Group 21 - Black and Decker Drill"

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(Disassembly Procedure)
(Disassembly Procedure)
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Revision as of 15:59, 29 November 2007

Contents

Executive Summary

Description

Carpenters, craftsman, and the all around handy man need a tool that is capable of placing screws into material accurately, and reliably. Utilizing a powered drill is the most viable option because the drill provides mechanical advantages that far surpass the conventional screw driver. With the slight pull of the trigger a powered drill is capable of providing many foot pounds of torque that is capable of placing screws into various materials accurately and effectively.

By carefully analyzing the Black and Decker DR202 it is clear to see why this drill has been a consumer favorite over the years. At first glance one may be attracted to the black and red color scheme that has became the standard for Black and Decker products. The outer covering is made of a sturdy plastic along with rubber grips for added comfort and control. Other features that help to separate the Black and Decker DR202 from other powered drills on the market are the level on the back of the drill as well as a keyless chuck. Taking a closer look under the outer casing a powerful 5 Amp motor is utilized to provide adequate power for the toughest jobs.

Granted, Black and Decker has created a drill that accurately and reliably drills screws into various materials there is still room for improvement. By disassembling and reviewing the manufacture processes, material type, and function of ease individual component of the DR202 our team was able to suggest some design changes. These design changes could be implemented to keep the Black and Decker DR202 drill on the top of the competitive marketplace.

Introduction

The objective of this project was to examine the Black and Decker DR202 powered drill. By disassembling, reassembling, and reviewing the inner workings of the drill our group was successfully able to grasp how the DR202 was manufactured and how to improve upon the design of the DR202.

Our group was a collaboration of five dedicated individuals whose contributions are noted below

Andrew Klahr (group leader)-List contributions here
Anne-Marsha Joseph- List contributions here
Katie Weber- List contributions here
Anthony Beeman - List contributions here
Yan Liang-List contributions here

Before Disassembly Section

Purpose:
The purpose of the Black and Decker DR202 was to fasten and remove screws into materials such as drywall, sheetrock, and wood. The DR202 is able to accurately and reliably place screws into various materials with the aid of the level that is provided on the drill. Drill bits can be removed by utilizing the keyless chuck. The DR202 chuck is capable of holding drill bits that fall within the range of 1–10 MM. Each bit can perform specific functions when utilized with the DR202. For example some bits are used to create holes in materials while other bits can be utilized to drive screws into materials. The DR202 is powered by 120 volts of alternating current and has the capability of rotating clock wise as well as counter clockwise.

Components:
Our group estimated the DR202 powered drill would have 30 parts some of these parts are listed below:
1 Directional Switch
2 Gears
3 Motor
4 Cord
5 Outer Casing
6 Chuck
7 Power Trigger
8 Screws
9 Bit

Materials:
Prior to disassembling the Black and Decker DR202 our group believed the Power drill consisted of 4 types of materials.
1 Copper
2 Steel
3 Plastic
4 Rubber

Disassembly Procedure

This is the table title
This is Step # Description Tool(s)
This starts Row 1 Width values (pixels) in header are used to designate the width of the column for the entire table. Text will wrap but it helps to control the layout. Height of the row is determined by the row's largest content A return and single vertical lines separate columns in rows. A double vertical line is necessary if you don't break up the text for cells.
This starts Row 2 "br" in brackets
break lines. Wiki sometimes ignores blank lines.
Some html tags can be used, but not many. Notice the align equals center tag at the beginning of the row. It centers the text in the first two columns, but doesn't work for the third column. I don't know why. Adding the tag again to the beginning of the cell in question will center the text.
This starts Row 3 Image tags are in this format:


Double brackets "[["
Image name
| = Vertical Line

The following order is not important, as long as each is separated by a vertical line:

  • Horizontal position (left, center, right)
  • Thumb (to create clickable thumbnail that links to fullsize image), don't include to make a fullsize
  • Size denoted in pixels (if desired)
  • You can add a caption if there is a thumbnail


Then close with double brackets "]]"

Broken links show up in red.



Here's where you can view any uploaded files

This is thumbnail
Camera disassembly 4.jpg


This is a resized image, not a thumbnail, but notice you can still click on it to get the full size.

This starts Row 4 Notice the repeating code for every row? It's important. A vertical line and a dash indicate the start of a new row. An exclamation point indicates the first column. You can put the entire row onto a single line, but it's easier to read if you break it up. Again, wiki usually ignores new paragraphs. Make sure to end the table correctly (vertical line and closed brace). Not doing so might still display the table, but nothing that comes afterwards.

After Disassembly

Part Table, including:

  • Part number
  • Part name
  • Number of parts of this type
  • Part material
  • Part manufacturing process
  • Image of the part
  • CAD file for selected parts

Assembly

  • Document each step to reassemble the product
  • How difficult was each assembly step?
  • What types of tools were required to perform this step?

After Assembly

  • Does it still work?
  • Conclusion remarks

References

APA Style You must use this format (It's easier than MLA, so don't worry).

Guide to Writing Wiki Code

The beauty about Wiki is that if you don't know the code, you can steal it from someone's page that does. Feel free to click the "edit" links or tabs to view the code for sections or the pages respectively. Be weary about wrecking havoc on another's page. Each page can be rollbacked to a previous verison and your username is linked to all changes. Although you might think it's cool to go through and insert "MIKE RULES" throughout the page, I'm sure Dr. Lewis would not be pleased.

Here's a few tips on writing with Wiki:

This is a bracket "[" "]"


This is a brace "{" "}"


To create a new page/link within Wiki:

  • Double brackets, page name, double brackets
  • Typing in a new page name will automatically create a page, which when clicked, you can then edit.
  • Whatever name you first type in is the name of the page. You can't change page names, only create new pages. Think before you create a new page.
  • Don't worry about slashes or anything, all pages are located in the same directory. If I wanted to create a page called "MAE 277 Template" the code would be ''MAE 277 Template'' Note: Brackets are italicized to prevent creating a new page.


Your table of contents is created automatically.

  • 1,2,3,4 are level 2 sections
  • 1.1, 1.2, 1.3 are level 3 headers


To create headers:

  • Section titles are wrapped with two equal signs ==My favorite header==
  • Bold headers within a section are wrapped with three equal signs ===My not-so-favorite header===


Asterisks indicate bullets. Be sure to put each asterisk on a new line.

  • Here's one
  • Here's two *Here's three, but its not on the next line


Bold text:

  • Start line with "b" in "<>". Be sure to end the line with "/b" in "<>" if you don't want the whole paragraph to be bold.
  • Surround text to be bolded with three " ' " marks on either side. Or highlight the text and click the "B" button on the toolbar.


Italics:

  • "i" in "<>". Don't forget to end with "/i" in "<>"
  • Highlight the text and click the "I" button in the toolbar (It will put four " ' " on either side).


This is a broken link media file caption


Media tags are indicated by "Media:", images by "Image:" Broken links in red. Case is not important. Use the toolbar to get examples if you're not sure.


Spacing is werid in wiki. Single return does nothing.

Double return (blank line), breaks the line.


Triple return (two blank lines), puts an extra blank line between lines of text.


"br" in "<>" will break lines. They can also be used to separate section headers.



Finally, use the "Show Preview" button on the bottom of the page to see how it looks before saving. It will allow you to catch and edit your errors without having to edit the page again. Just don't forget to save it when you're really done.

This is an example table

This is the table title
This is Column Header 1 This is Column Header 2 This is Column Header 3
This starts Row 1 Width values (pixels) in header are used to designate the width of the column for the entire table. Text will wrap but it helps to control the layout. Height of the row is determined by the row's largest content A return and single vertical lines separate columns in rows. A double vertical line is necessary if you don't break up the text for cells.
This starts Row 2 "br" in brackets
break lines. Wiki sometimes ignores blank lines.
Some html tags can be used, but not many. Notice the align equals center tag at the beginning of the row. It centers the text in the first two columns, but doesn't work for the third column. I don't know why. Adding the tag again to the beginning of the cell in question will center the text.
This starts Row 3 Image tags are in this format:


Double brackets "[["
Image name
| = Vertical Line

The following order is not important, as long as each is separated by a vertical line:

  • Horizontal position (left, center, right)
  • Thumb (to create clickable thumbnail that links to fullsize image), don't include to make a fullsize
  • Size denoted in pixels (if desired)
  • You can add a caption if there is a thumbnail


Then close with double brackets "]]"

Broken links show up in red.



Here's where you can view any uploaded files

This is thumbnail
Camera disassembly 4.jpg


This is a resized image, not a thumbnail, but notice you can still click on it to get the full size.

This starts Row 4 Notice the repeating code for every row? It's important. A vertical line and a dash indicate the start of a new row. An exclamation point indicates the first column. You can put the entire row onto a single line, but it's easier to read if you break it up. Again, wiki usually ignores new paragraphs. Make sure to end the table correctly (vertical line and closed brace). Not doing so might still display the table, but nothing that comes afterwards.