Group 3 - Black and Decker Drill - Revision history

J Theresanathan at 15:13, 8 December 2006

2006-12-08T15:13:25Z

Show changes

J Theresanathan at 14:58, 8 December 2006

2006-12-08T14:58:00Z

J Tewes: /* Design Changes and Recommendations */

2006-12-08T03:35:29Z

Design Changes and Recommendations

J Tewes: /* Analysis Discussion */

2006-12-08T03:26:51Z

Analysis Discussion

J Tewes: /* Operation */

2006-12-08T03:25:22Z

Operation

J Tewes: /* Design Changes on the Component Level */

2006-12-08T03:21:07Z

Design Changes on the Component Level

J Tewes: /* Introduction */

2006-12-08T03:16:55Z

Introduction

J Tewes: /* Executive Summary */

2006-12-08T03:14:24Z

Executive Summary

A Davis: /* Introduction */

2006-12-07T14:49:26Z

Introduction

A Davis: /* Part Table */

2006-12-01T02:57:31Z

Part Table

@@ Line 7: / Line 7: @@
 By analysis and research, we were able to determine what each component was, and produced CAD drawings and pictures of each component.  After all this information was gathered, we reassembled the drill.
-Assembly was fairy easy and basically the reverse of the dissassembly process.
+Assembly was fairy easy and basically the reverse of the disassembly process.
 After we disassembled, analyzed, and reassembled the Black & Decker power drill we gained a better comprehension of how the drill worked.
@@ Line 18: / Line 18: @@
 Shawn Lazarus (Disassembly & Presentation)
-Christopher Sendlak (Group Leader, Dissassembly & Reassembly & Manufacturing Processes)
+Christopher Sendlak (Group Leader, Disassembly & Reassembly & Manufacturing Processes)
 Angela Davis (Reassembly & Web Site)
@@ Line 29: / Line 29: @@
 ===Purpose===
-The Black and Decker Drill is used to drill holes into various materials (ie. wood, sheetrock).  The drill uses an AC current from a wall and directs electricty to a motor to create rotational motion.  This motion is transferred to the gears in order to create rotation within the drill bit.
+The Black and Decker Drill is used to drill holes into various materials (i.e. wood, sheetrock).  The drill uses an AC current from a wall and directs electricity to a motor to create rotational motion.  This motion is transferred to the gears in order to create rotation within the drill bit.
 ===Operation===
@@ Line 89: / Line 89: @@
 | align="center" |Separated drill bit, motor, gears, and magnetic field
 | align="center" |Hands
-| align="center" |Easy. All parts were easy to seperate once they were free from the housing
+| align="center" |Easy. All parts were easy to separate once they were free from the housing
 |-
 | align="center" |6
 | align="center" |Separated and removed small brushes
 | align="center" |Hands
-| align="center" |Easy. Brushes pushed out of thier holders with minimal force
+| align="center" |Easy. Brushes pushed out of their holders with minimal force
 |-
 | align="center" |7
@@ Line 143: / Line 143: @@
 | align="center" |Screws
 | align="center" |11 (Casing Screws) 2(Long Screws)
-| align="center" |Metal<BR>Strength and longivity of part
+| align="center" |Metal<BR>Strength and longevity of part
 | align="center" |Holds separate components together
 | align="center" |Phillips head to allow for easy alignment during manufacturing
@@ Line 153: / Line 153: @@
 | align="center" |Level
 | align="center" |1
-| align="center" |Plastic (externally)<BR>Strengh and durability<BR> Liquid (internally)<BR>To allow for the bubble to balance in the liquid
+| align="center" |Plastic (externally)<BR>Strength and durability<BR> Liquid (internally)<BR>To allow for the bubble to balance in the liquid
 | align="center" |Shows the user if the drill is being held horizontally
-| align="center" |To effectivly allow for the bubble to be read easlily and to show if the drill is horizontal
+| align="center" |To effectively allow for the bubble to be read easily and to show if the drill is horizontal
 | align="center" |Injection Molding
 | |[[Image:MAE_pics_055.jpg|center|thumb|100px]]
@@ Line 162: / Line 162: @@
 | align="center" |Keyless Chuck
 | align="center" |1
-| align="center" |Plastic (externally)<BR>Comfort of use for user<BR> Steel (internally)<BR>Stength and longevity
+| align="center" |Plastic (externally)<BR>Comfort of use for user<BR> Steel (internally)<BR>Strength and longevity
 | align="center" |Place for the bit to be held
 | align="center" |To allow for the drill bit to be held in place easily
@@ Line 181: / Line 181: @@
 | align="center" |Cord
 | align="center" |1
-| align="center" |Plastic (externally)<BR>Shield user from electrcity<BR> Copper wiring (internally)<BR>Conductor of electricity
+| align="center" |Plastic (externally)<BR>Shield user from electricity<BR> Copper wiring (internally)<BR>Conductor of electricity
 | align="center" |Supplies power to the whole drill
 | align="center" |Allows for the cord to be flexible and fit into a standard power outlet
@@ Line 190: / Line 190: @@
 | align="center" |Trigger
 | align="center" |1
-| align="center" |Plastic<BR>Sheild user from electricity on the inside
+| align="center" |Plastic<BR>Shield user from electricity on the inside
-| align="center" |Contolls the speed
+| align="center" |Contols the speed
 | align="center" | Easily conforms to the users fingers to allow for easy use
 | align="center" |Injection Molding
@@ Line 199: / Line 199: @@
 | align="center" |Chip
 | align="center" |1
-| align="center" |Silicon<BR>Condutor of electricity and computational power
+| align="center" |Silicon<BR>Conductor of electricity and computational power
 | align="center" |Controls the power supply
 | align-"center" |Allows for efficient power control
@@ Line 210: / Line 210: @@
 | align="center" |Copper<BR>Conductor of electricity
 | align="center" |Allows for the generation of power
-| align="center" |Many coils to more effectivly produce current
+| align="center" |Many coils to more effectively produce current
 | align="center" |Copper wire wound around central axel(Insulated)
 | |[[Image:MAE_pics_037.jpg|center|thumb|100px]]
@@ Line 218: / Line 218: @@
 | align="center" |3
 | align="center" |Metal<BR>Strength and durability
-| align="center" |Allows tranfer of electricity in the coil of the central axis
+| align="center" |Allows transfer of electricity in the coil of the central axis
-| align="center" |Cylindrical and formed around the axial to be able to connect effectivly to the field and the axial which allows for the rotation of the components
+| align="center" |Cylindrical and formed around the axial to be able to connect effectively to the field and the axial which allows for the rotation of the components
 | align="center" |Sheet Metal Forming and Machining
 | |[[Image:MAE_pics_038.jpg|center|thumb|100px]]
@@ Line 228: / Line 228: @@
 | align="center" |Plastic<BR>Strength and comfort for user
 | align="center" |Changes the direction that the chuck rotates in
-| align="center" |Allows of eas of use by the user and to efficiently switch the direction of the current.
+| align="center" |Allows of ease of use by the user and to efficiently switch the direction of the current.
 | align="center" |Injection Molding
 | |[[Image:MAE_pics_053.jpg|center|thumb|100px]]
@@ Line 247: / Line 247: @@
 | align="center" |Plastic<BR>Light weight and durability
 | align="center" |Draws air into the drill to cool down the motor
-| align="center" |Fin shape to sufficiantly draw air over the drill components
+| align="center" |Fin shape to sufficiently draw air over the drill components
 | align="center" |Injection Molding
 | |[[Image:MAE_pics_030.jpg|center|thumb|100px]]

@@ Line 530: / Line 530: @@
 ===Design Changes and Recommendations===
-A design change would be to have another handle on the drill along the chuck.  This would provide more stability for the user because most of the wieght of the drill is above the handle, making it top heavy and awkward to hold.  This extra handle would allow for the user to more easily support the drill.  This handle could be removable so that consumer who do not lke this extra handle or if the handle will get in the way then the consumer could remove it.  This could be accomplished with clips on the casing that this extra handle could be attached to.  Also the drill could have a cord that is retractable, this would allow the user to determine how  much cord they need to have.  Another feature that could be changed is allowing the chuck to fit various size bits.  This would allow the user to customize the drill to it their own specifications.  This can be accomplished by having the option for the user to change the chuck to hold one that could use a larger sized bit. At a marketing standpoint this is a good ploy because the company will be able to make more money off of the different chucks that they sell. From the consumers view this is also good because it means they can own one drill that can use many different bit sizes for all their drilling needs.  Also the company could make the housing from recycleble plastic.  This is a way to cut down on material cost for the company because it they could recycle the plastic from old or broken drills.  This could be accomplished by having consumers return their broken drills for a discount or some other marketing ploy.  These could make the drill a more desirable product for consumers which in turn would make the company more productive.
+One design change could be to have another handle on the drill along the chuck.  This would provide more stability for the user because the center of mass is above the handle, making it top heavy and awkward to hold.  This extra handle would allow for the user to more easily support the drill.  This handle could also be removable so that a consumer who does not lke this extra handle, or if the handle was to get in the way in a small space then it could be removed.  This could be accomplished with clips on the casing that this extra handle could be attached.  A second design change could be to have a cord that is retractable, this would allow the user to easily store the drill and not have cords tangle up.  Another feature that could be changed would be to allow the chuck to fit various size bits.  This would allow the user to customize the drill to their own specifications.  This can be accomplished by having the option for the user to change the chuck so that a different bit sixe could be used. At a marketing standpoint this is a good ploy because the company will be able to make more money off of the different chucks that they sell.  The product would aslo be more appealing to consumers too; they would like the idea that the drill has more features than other brands, as well as the idea that they can just use one drill for any size bit.  Also the company could make the housing from recycleable plastic.  This is a way to cut down on material cost for the company because they could recycle the plastic from old or broken drills.  This could be accomplished by having consumers return their broken drills for a discount or some other marketing ploy.  These could make the drill a more desirable product for consumers, which in turn would make the company more productive.
 ==References==

@@ Line 527: / Line 527: @@
 ===Analysis Discussion===
-Thermodynamic analysis could be used to determine the threshold condition that will cause the drill to overheat and possibly start on fire.  A working prototype of the drill or an actual drill could be used as the model for this test.  Stress analysis could be used to determine the wear and tear on the chuck from repeated use.  The model for this agin could be a working prototype or actual drill.  Another type of analysis that could be is strenth and durability testing on the plastic housing.  This is important because the consumer does not want to buy a product that will break the first time it is dropped.  A model that could be used for this is a working prototype can be used to model this test.
+Thermodynamic analysis could be used to determine the threshold condition that will cause the drill to overheat and possibly start on fire.  A working prototype of the drill or an actual drill could be used as the model for this test.  Stress analysis could be used to determine the wear and tear on the chuck from repeated use.  The model for this again could be a working prototype or an actual drill.  Another type of analysis that could be is strenth and durability testing on the plastic housing.  This is important because the consumer does not want to buy a product that will break the first time it is dropped.  A model that could be used for this is a working prototype.
 ===Design Changes and Recommendations===

@@ Line 523: / Line 523: @@
 ===Operation===
-The drill works by converting power from the AC power cord and changes it to mechanical energy to rotate the spindle and motor.  This allows for mechanical energy to be produced to rotate the chuck to allows the drill to operate. Also a magnetic field exists between the stator and the armature. This allows for a current to be produced in the field, which in turn produces a voltage that is controlled by the trigger. This controll allows for the variable speeds of the drill.  The commutator allows the drill to run on direnct power (DC) instead on alternating (AC) power. It does this by periodically reversing the direction of the current produced by the motor.  This produces rotational motion that is transfored along the spindle to the chuck.  The reverse switch allows for the change in direction of the current which in turn changes the direction that the chuck rotates in.  The fan on the spindle allows for the constant cooling down of the gears and other rotating parts.
+The drill works by converting electrical energy from the AC power cord to mechanical energy to rotate the spindle and motor.  The now mechancial energy allows the chuck to rotate and the drill to operate.. Also, a magnetic field exists between the stator and the armature. This allows for a current to be produced in the field, which in turn produces a voltage that is controlled by the trigger. This control allows for the variable speeds of the drill.  The commutator allows the drill to run on direct power (DC) instead on alternating (AC) power. It does this by periodically reversing the direction of the current produced by the motor.  This produces rotational motion that is transfored along the spindle to the chuck.  The reverse switch allows for the change in direction of the current which in turn changes the direction in which the chuck rotates.  The fan on the spindle allows for the constant cooling down of the gears and other rotating parts.
 ===Analysis Discussion===

@@ Line 441: / Line 441: @@
 ===Design Changes on the Component Level===
-A change that could be made on the component level of the drill would be to mold the bit holder and level into the plastic housing.  This could be accomplished by off setting to one side of the two housing halves because in the current design the bit holder and the level are placed between the two halves of the housing.  This would be advantagous because these pieces would not be able to slide around in their current slots. Unfortunatly there are no components on the inside of the drill that could be combined because most of the parts need to rotate seperatly to allow the drill to function.
+A change that could be made on the component level of the drill would be to mold the bit holder and level into the plastic housing.  This could be accomplished by setting holder and level to one side of the two housing halves, because in the current design the bit holder and the level are placed between the two halves of the housing.  This would be advantagous because these pieces would not be able to slide around in their current slots, and it could also decrease assembly time. Unfortunately, there are no components on the inside of the drill that could be combined because most of the parts need to rotate seperatly to allow the drill to function.
 ==Assembly==

@@ Line 12: / Line 12: @@
 ==Introduction==
-This product is a Black & Decker Drill which is built to use different size bits to drill holes in various materials.  The drill also has a reversable function.  This is accomplished by changing electrical energy into mechanical energy inside the drill motor.
+This product is a Black & Decker Drill which is designed to use different size bits to drill holes in various materials.  The drill runs by changing electrical energy into mechanical energy inside the drill motor.  The drill also has a reverse function.
 Each member was responsible for the following parts of the project:
-Shawn Lazarus  (Disassembly & Presentation)
+Shawn Lazarus (Disassembly & Presentation)
-Christopher Sendlak(Group Leader, Dissassembly & Reassembly & Manufacturing Processes)
+Christopher Sendlak (Group Leader, Dissassembly & Reassembly & Manufacturing Processes)
 Angela Davis (Reassembly & Web Site)

@@ Line 5: / Line 5: @@
 We took each component of the drill apart and analyzed it to determine the function and why each part was made of it material and shape.  This helped us better understand how the drill worked on the component level.
-By analysis and research we were able to determine what the component was. We also produced CAD drawings and pictures of each component.  After all this information was gathered we reassembled the drill.
+By analysis and research, we were able to determine what each component was, and produced CAD drawings and pictures of each component.  After all this information was gathered, we reassembled the drill.
-Assembly was fairy easy and the basically the reverse of the dissassembly process.
+Assembly was fairy easy and basically the reverse of the dissassembly process.
-After we disassembled, analyzed, and reassembled the Black & Decker power drill we gained a better comprehension of how the drill works.
+After we disassembled, analyzed, and reassembled the Black & Decker power drill we gained a better comprehension of how the drill worked.
 ==Introduction==

@@ Line 16: / Line 16: @@
 Each member was responsible for the following parts of the project:
-Lazarus,Shawn  (Disassembly & Presentation)
+Shawn Lazarus  (Disassembly & Presentation)
-Sendlak,Christopher (Group Leader, Dissassembly & Reassembly & Manufacturing Processes)
+Christopher Sendlak(Group Leader, Dissassembly & Reassembly & Manufacturing Processes)
-Davis,Angela (Reassembly & Web Site)
+Angela Davis (Reassembly & Web Site)
-Tewes,Jennifer (Disassembly & Reassembly & Web Site)
+Jennifer Tewes (Disassembly & Reassembly & Web Site)
-Theresanathan,Jerry(Disassembly & Pictures & Presentation)
+Jerry Theresanathan (Disassembly & Pictures & Presentation)
 ==Before Disassembly==