*Gate 2: Product Dissection - Revision history

MAE 277 2012 - Group 5: /* Challenges: */

2012-12-07T01:09:48Z

Challenges:

MAE 277 2012 - Group 5: /* Connection of Subsystems */

2012-12-07T01:08:40Z

Connection of Subsystems

MAE 277 2012 - Group 5: /* Connection of Subsystems */

2012-12-07T01:01:24Z

Connection of Subsystems

MAE 277 2012 - Group 5: /* The Process */

2012-12-07T00:58:44Z

The Process

MAE 277 2012 - Group 5: /* The Process */

2012-12-07T00:57:53Z

The Process

MAE 277 2012 - Group 5: /* Connection Implementation */

2012-12-07T00:33:34Z

Connection Implementation

MAE 277 2012 - Group 5: /* Connection Implementation */

2012-12-07T00:32:54Z

Connection Implementation

MAE 277 2012 - Group 5: /* Connection Implementation */

2012-12-07T00:32:42Z

Connection Implementation

MAE 277 2012 - Group 5: /* Connection Implementation */

2012-12-07T00:32:22Z

Connection Implementation

MAE 277 2012 - Group 5: /* Connection Implementation */

2012-12-07T00:20:08Z

Connection Implementation

@@ Line 243: / Line 243: @@
 :#'''Separating the shell of the Quick-Reload Clip:''' When the Quick-Reload Clip was dissected, it was originally believed that two screws could be removed and then the separation of the shells would be easy.  However, when Group 5 first attempted to pull the shells apart, they could not separate.  No amount of strength and no tool were found that would aid in the separation of the shells.  After 30 minutes of examining the clip, Group 5 determined the part to be unable to be disassembled.
 :#'''Separating the body of the Main Base:''' The next challenge the group was faced with was separating the Main Base of the Nerf blaster.  If the two shells were simply pulled apart, then the grouped risked having the small internal parts fall out of the base, leaving the proper location of each part unknown.  Therefore two people were needed for this part of the procedure where they slowly and gently unsnapped/pulled the parts from one another.  When the two shells were finally separated, a few stray parts fell from the gun.  The group then had to slowly analyze each space inside the gun to figure out where each individual piece fit.  Knowing where every part goes will aid in the reassembly process.
-:#'''Removal of the Cocking Bolt:'''  The last challenge that Group 5 faced was the disassembly of the Cocking Bolt from the base of the Nerf gun.  The Cocking Bolt, part number twenty-one in the parts list stated above, consists of a steel rod with two plastic knobs on each end.  This part of the gun needed to be taken apart in order for the Main Base of the gun to be disassembled properly.  A great deal of strength was applied to pull the orange knob off the rod, but that wasn't enough. The group member then used his pressure along with the assistance of the Phillips head screwdriver to finally prop it from the rod.  After examination and consistent strength, the part was able to be disassembled; only creating a minor speed bump in the disassembly process.
+:#'''Removal of the Cocking Bolt:'''  The last challenge that Group 5 faced was the disassembly of the Cocking Bolt from the base of the Nerf gun.  The Cocking Bolt, part number twenty-one in the parts list stated above, consists of a steel rod with two plastic knobs on each end.  This part of the gun needed to be taken apart in order for the Main Base of the gun to be disassembled properly.  A great deal of strength was applied to pull the orange knob off the rod, but that wasn't enough. The group member then used his pressure along with the assistance of the Phillips Head Screwdriver to finally prop it from the rod.  After examination and consistent strength, the part was able to be disassembled; only creating a minor speed bump in the disassembly process.
 =='''Related Information'''==

@@ Line 191: / Line 191: @@
 ===Documentation of Connection of Subsystems===
 ====Connection of Subsystems====
-After completing the dissection process, Group 5 determined three main subsystems; the Quick-Reload Clip System, the Base System, and the Barrel System.  Each subsystem is connected to one or more subsystems, aiding in the overall function of the system which is the flow of energy necessary to shoot a dart at a long distance with great accuracy. The Quick-Reload Clip shells are connected by the use of screws as well as plastic slots that have been melted together.  The Quick-Reload Clip system is then connected to the Base System by more plastic slots. The clip snaps into place on the Nerf gun’s Main Base.  Now the foam bullets can be moved from the Quick-Reload Clip to the base system.  The Base System includes the Cocking Bolt, the Trigger and the Piston Systems. In the Piston System, the Internal Air Shaft Spring is inserted onto Air Chamber 2, and then Air Chamber 2 is inserted onto Air Chamber 1. The Trigger is connected by plastic tabs found inside the base.  The Cocking Bolt is also connected by plastic knobs on each side of a metal rod that allow the cocking bolt to be moved on the base.
+After completing the dissection process, Group 5 determined three main subsystems; the Quick-Reload Clip System, the Base System, and the Barrel System.  Each subsystem is connected to one or more subsystems, aiding in the overall function of the system which is the flow of energy necessary to shoot a dart at a long distance with great accuracy. The Quick-Reload Clip shells are connected by the use of screws as well as plastic slots that have been melted together.  The Quick-Reload Clip system is then connected to the Base System by more plastic slots. The clip snaps into place on the Nerf gun’s Main Base.  Now the foam bullets can be moved from the Quick-Reload Clip to the base system.  The Base System includes the Cocking Bolt, the Trigger and the Piston Systems. In the Piston System, the Internal Air Shaft Spring is inserted onto Air Chamber 2, and then Air Chamber 2 is inserted onto Air Chamber 1. The Trigger is connected by plastic tabs found inside the base.  The Cocking Bolt is also connected by plastic knobs on each side of a metal rod that allow the Cocking Bolt to be moved on the base.
 The dart enters the base where human energy, from the sliding of the Cocking Bolt backwards and then forwards, is converted to mechanical translational energy, loading the gun. When the Cocking Bolt is pulled back, the Piston system is also pulled back.  The Internal Air Shaft Spring is compressed, causing potential energy to be stored in the spring.  The Cocking Bolt is then pulled forward, bringing only Air Chamber 1 with it. The Trigger is then pressed by imported energy from a human finger. The Internal Air Shaft Spring is released from its state of compression which then forces Air Chamber 2 to move.  When Air Chamber 2 slides onto Air Chamber 1, air is forced through the tube.  The mechanical translational energy is converted to pneumatic energy when Air Chamber 2 slides onto Air Chamber 1. Finally, the Barrel System is needed to complete the overall function.  Each shell of the Barrel Extension is connected to one another by screws.  The Barrel Extension is then connected to the Main Base by plastic slots in which the barrel can connect by lining up the slots and twisting it onto the base.  The pneumatic energy flowing through the tube then causes the dart to be forced through the tube and become a bundle of kinetic energy, shooting the dart a long distance with great accuracy.

← Older revision		Revision as of 01:01, 7 December 2012
Line 195:		Line 195:


−	The ~~sight system~~ and the ~~shoulder stock system~~ are also connected to the ~~base~~ of the Nerf gun; however, they do play a role in the overall function of the product. The shells of the sight are connected by screws to keep the sight together. The sight can then be connected to the ~~base~~ by plastic slots on the top of the gun. The sight does not aid in the transfer of energy, but it is a signal that aids in the accuracy of the firing of the gun. Also, the shells of the ~~shoulder stock~~ can be connected to one another by screws and is connected ~~in the same way~~ to the ~~base~~ of the gun. The plastic clip holders are connected to the stock by screws and allow for provision in the system by storing the spare ~~clips~~ filled with darts.	+	The Sight System and the Shoulder Stock System are also connected to the Main Base of the Nerf gun; however, they do play a role in the overall function of the product. The shells of the sight are connected by screws to keep the sight together. The sight can then be connected to the Main Base by plastic slots on the top of the gun. The sight does not aid in the transfer of energy, but it is a signal that aids in the accuracy of the firing of the gun. Also, the shells of the Shoulder Stock can be connected to one another by screws and is connected by locking slots to the Main Base of the gun. The plastic clip holders are connected to the stock by screws and allow for provision in the system by storing the spare Quick-Reload Clips filled with darts.

@@ Line 166: / Line 166: @@
 |7||Remove the Internal Air Shaft Spring(48) from Air Chamber 2(50).||Phillips Head Screwdriver||00:30||1||
 |-
-|8||Remove the Air Chamber 2 (50) from Air Chamber 1 (49).||Phillips Head Screwdriver||00:10||1||[[File:Nail.JPG|center|250px]]Note: The nail found in Air Chamber 1 (49) cannot be disassembled; therefore, it is given a difficulty rating of 4.
+|8||Remove the Air Chamber 2 (50) from Air Chamber 1 (49).||Phillips Head Screwdriver||00:10||1||[[File:Nail.JPG|center|250px]]Note: The Nail found in Air Chamber 1 (49) cannot be disassembled; therefore, it is given a difficulty rating of 4.
 |}

@@ Line 68: / Line 68: @@
 |1||Press the Clip Buttons (29) on either side of the Main Base, at the same time, in order to drop the Quick-Reload Clip from its connection to the Main Base.||Hands||00:05||1||[[File:026.JPG|150px]]
 |-
-|2||Twist barrel extension 90° to the left and slide out of place, detaching from base of blaster.||Hands||00:05||1||[[File:BarrelExtension.JPG|150px]]
+|2||Twist Barrel Extension 90° to the left and slide out of place, detaching from base of blaster.||Hands||00:05||1||[[File:BarrelExtension.JPG|150px]]
 |-
 |3||Grab the Flip-Up Sight on each side and slide it off of the Nerf gun by using the rails on the top of the Main Base.||Hands||00:10||1||[[File:Flip-UpSight.JPG|150px]]
@@ Line 84: / Line 84: @@
 |'''Step'''||'''Description'''||'''Tool Used'''||'''Time Required'''||'''Difficulty'''||'''Notes'''
 |-
-|1||Unscrew six screws connecting blue barrel protective cover (2) to the barrel.||Phillips Head Screwdriver||04:00||1||
+|1||Unscrew six screws connecting blue Barrel Protective Cover (2) to the barrel.||Phillips Head Screwdriver||04:00||1||
 |-
-|2||Remove the barrel protective covers (2).||Hands||00:20||1||[[File:Step3G5.jpg|center|150px]]
+|2||Remove the Barrel Protective Covers (2).||Hands||00:20||1||[[File:Step3G5.jpg|center|150px]]
 |-
 |3||Unscrew 8 more screws found on the Barrel Extension Base (1) of the barrel.||Phillips Head Screwdriver||06:00||2||Some screws are very small and can be easily overlooked.
@@ Line 175: / Line 175: @@
 |'''Step''' ||'''Description'''	||'''Tool Used'''||'''Time Required'''||'''Difficulty'''||'''Notes'''
 |-
-|1||Unscrew 10 screws from each side of the Shoulder Stock (25).||Phillips Head Screwdriver||08:00||1||The 18 screws from the outer layer of the Base must first be unscrewed before the Shoulder Stock can be removed from the Base to be further disassembled.
+|1||Unscrew 10 screws from each side of the Shoulder Stock (25).||Phillips Head Screwdriver||08:00||1||The 18 screws from the outer layer of the Main Base must first be unscrewed before the Shoulder Stock can be removed from the Main Base to be further disassembled.
 |-
 |2||Pull the Shoulder Stock apart (25).||Hands||00:20||1||[[File:Step 4.2.jpg|center|150px]]

@@ Line 229: / Line 229: @@
 ====Connection Implementation====
-Not only are the subsystems as well as the reason for their specific connections points important, but how the connections are implemented play an extremely important role in the design and functionality of the Nerf Longstrike CS-6 as well. This Nerf gun has three main connection types, two of which are non-permanent connections while the other is used as a barrier. The barrier, or permanent connection, in the Nerf gun is a joint that is not intended to be disassembled and in this Nerf gun is a glue adhesive that is located in slots which connect the piston to the back of the Main Base. It is designed in this way to allow a direct and therefore more efficient transfer of energy during normal usage. The other two connections, which are non-permanent joints that are used within the Nerf gun and are easily disassembled, are screws and slots. The screws used are all standard sizes while the slots are used so that subsystems as well as components can easily fit together without any extra connection points necessary[1].  The reason for this specific combination of three as connections types for the Nerf gun has to do with four main factors influencing the design:
+Not only are the subsystems as well as the reason for their specific connections points important, but how the connections are implemented play an extremely important role in the design and functionality of the Nerf Longstrike CS-6 as well. This Nerf gun has three main connection types, two of which are non-permanent connections while the other is used as a barrier. The barrier, or permanent connection, in the Nerf gun is a joint that is not intended to be disassembled and in this Nerf gun is a glue adhesive that is located in slots which connect the Internal Air Shaft to the back of the Main Base. It is designed in this way to allow a direct and therefore more efficient transfer of energy during normal usage. The other two connections, which are non-permanent joints that are used within the Nerf gun and are easily disassembled, are screws and slots. The screws used are all standard sizes while the slots are used so that subsystems as well as components can easily fit together without any extra connection points necessary[1].  The reason for this specific combination of three as connections types for the Nerf gun has to do with four main factors influencing the design:
 :*The first factor affecting the design is a global factor considering safety standards all around the world. In order for the Nerf gun to be sold in different countries, for the most part, it has to pass safety standards which differ from country to country. These three simple connection types meet these safety standards which allows for a greater market for the product.
 :*Another factor for the Nerf gun is an economic factor considering the economy that potential buyers are dealing with. Due to this as well as the variety of Nerf guns created, these connection types are used because they are inexpensive and can be mass produced. This allows for a smaller cost to the potential buyer and a larger profit for the producer, which in this case is Hasbro.

@@ Line 229: / Line 229: @@
 ====Connection Implementation====
-Not only are the subsystems as well as the reason for their specific connections points important, but how the connections are implemented play an extremely important role in the design and functionality of the Nerf Longstrike CS-6 as well. This Nerf gun has four main connection types, two of which are non-permanent connections while the other two are permanent. The permanent connections in the Nerf gun are joints that are not intended to be disassembled. In this Nerf gun, one such connection is a glue adhesive that is located in slots which connect the Internal Air Shaft to the back of the Main Base.  It is designed in this way to allow a direct and therefore more efficient transfer of energy during normal usage. The other permanent connection is a Nail located in Air Chamber 1 which helps to hold the two sides of Air Chamber 1 together as well as provide support for the part so that it doesn't break under normal usage. The other two connections, which are non-permanent joints that are used within the Nerf gun and are easily disassembled, are screws and slots. The screws used are all standard sizes while the slots are used so that subsystems as well as components can easily fit together without any extra connection points necessary[1].  The reason for this specific combination of four as connections types for the Nerf gun has to do with four main factors influencing the design:
+====Connection Implementation====
+Not only are the subsystems as well as the reason for their specific connections points important, but how the connections are implemented play an extremely important role in the design and functionality of the Nerf Longstrike CS-6 as well. This Nerf gun has three main connection types, two of which are non-permanent connections while the other is used as a barrier. The barrier, or permanent connection, in the Nerf gun is a joint that is not intended to be disassembled and in this Nerf gun is a glue adhesive that is located in slots which connect the piston to the back of the Main Base. It is designed in this way to allow a direct and therefore more efficient transfer of energy during normal usage. The other two connections, which are non-permanent joints that are used within the Nerf gun and are easily disassembled, are screws and slots. The screws used are all standard sizes while the slots are used so that subsystems as well as components can easily fit together without any extra connection points necessary[1].  The reason for this specific combination of three as connections types for the Nerf gun has to do with four main factors influencing the design:
-:*The first factor affecting the design is a global factor considering safety standards all around the world. In order for the Nerf gun to be sold in different countries, for the most part, it has to pass safety standards which differ from country to country. These four simple connection types meet these safety standards which allows for a greater market for the product.
+:*The first factor affecting the design is a global factor considering safety standards all around the world. In order for the Nerf gun to be sold in different countries, for the most part, it has to pass safety standards which differ from country to country. These three simple connection types meet these safety standards which allows for a greater market for the product.
-:*Another factor for the Nerf gun is an economic factor considering the economy that potential buyers are dealing with. Due to this as well as the variety of Nerf guns created, these connection types are used because they are inexpensive and can be mass produced. This allows for a smaller cost to the potential buyer and a larger profit for the producer, which in this case is Hasbro.
+*Another factor for the Nerf gun is an economic factor considering the economy that potential buyers are dealing with. Due to this as well as the variety of Nerf guns created, these connection types are used because they are inexpensive and can be mass produced. This allows for a smaller cost to the potential buyer and a larger profit for the producer, which in this case is Hasbro.
-:*A third factor is society, or societal factors, considering the safety of the user as well as those who come into contact with the Nerf gun. These four connections are used because they allow for no harm to come to the user. [Note the glue adhesive is located in the most inner-section of the Nerf gun]. This factor is comparable to using nails instead of screws. This would be an improper design choice for the safety of the people as well as objects coming into contact with the Nerf gun. [Note the one Nail that is used in Air Chamber 1 is less than half a millimeter in diameter and is completely enclosed in Air Chamber 1. This part is also located in the inner most protected section of the Nerf gun and cannot be removed. Therefore, this Nail provides no harm to the user.]
+:*A third factor is society, or societal factors, considering the safety of the user as well as those who come into contact with the Nerf gun. These three connections are used because they allow for no harm to come to the user. [Note the glue adhesive is located in the most inner-section of the Nerf gun]. This factor is comparable to using nails instead of screws. This would be an improper design choice for the safety of the people as well as objects coming into contact with the Nerf gun.
 :*The final factor affecting the original design of the Nerf gun is that of the environment. These four connections are relative strong with a long performance span. This limits the potential replacement of these parts which in turn decreases its environmental impact.
+These three connections, screws, slots, and a glue adhesive, were chosen for very specific reasons allowing for a better design. They were also influenced by performance. They were chosen because they were strong enough to withstand normal usage and complete their functionality, especially with the promised range of the dart. A connection needs to be chosen that allows the product to perform its given nature for the longest amount of time. Together, all of these factors allowed for the design of a Nerf gun involving screws, slots, and a glue adhesive to connect its subsystems.
-These four connections, screws, slots, a nail, and a glue adhesive, were chosen for very specific reasons allowing for a better design. They were also influenced by performance. They were chosen because they were strong enough to withstand normal usage and complete their functionality, especially with the promised range of the dart. A connection needs to be chosen that allows the product to perform its given nature for the longest amount of time. Together, all of these factors allowed for the design of a Nerf gun involving screws, slots, a nail, and a glue adhesive to connect its subsystems.
 ====Arrangement of the Subsystems====