Group 9 2012 Product Explination
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|Remove the drum-magazine from the magazine, by pressing the release button and pulling on drum. This part is designed to be removed repeatedly to be reloaded with darts, by younger users. | |Remove the drum-magazine from the magazine, by pressing the release button and pulling on drum. This part is designed to be removed repeatedly to be reloaded with darts, by younger users. | ||
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Revision as of 15:32, 28 November 2012
Contents |
Cause For Corrective Action
- For this gate, we have been able to continue our good time management. We were able to successfully put together meeting times that fit for everyone, as well as allow us to finish our core work early to allow time for editing in gate two. This is something that we are looking to carry over into this gate. We have had an early meeting to get things started as we go into this week. We will also have to allow extra time to create our presentation which is due on the same day. This is a factor that we did not have to consider before. One other issue we will deal with is going through the assembly without being in the dissection lab. We have taken our gun out of the dissection lab so we will now need to bring the necessary tools to reassemble it from one of the group member’s houses. Other than these few considerations, this will be a straight forward assignment.
- At the end of the project, we were able to do all of this successfully. We had no problem with time management and were able to get all required tasks completed on time. We had no problem getting all of the necessary tools to school for assembly.
Product Assembly
| Step | Description | Difficulty | Image |
|---|---|---|---|
| #1 | Remove the drum-magazine from the magazine, by pressing the release button and pulling on drum. This part is designed to be removed repeatedly to be reloaded with darts, by younger users. | 1 | |
| #2 | Remove the drum-magazine locking mechanism by pulling off of the whole part with force using hands. This is made to be removed because it only has clips holding it in place. | 1 | |
| #3 | remove magazine cover by removing the five screws around the outside that hold it in place. This is made to be removed because the screws are non-permanent fastener. | 2 |  |
| #4 | Remove rapid feed assist knob, rapid feed assist knob spring, and axle rod from center of the drum assembly by simply pulling strait out of the center. This is made to be removed, and is only held in place by screws, but isn’t intended to be removed with frequency of magazine. | 2 |  |
| #5 | Remove the dart advance drum from the housing by pulling straight out. This is designed to be removed because it only slides into place. | 1 |  |
| #6 | Remove the magazine locking assembly from the drum-magazine holder by removing two screws over cover and pulling out parts underneath with hands. This is comprised of several levers and stops that hold, and allow the release of the magazine. Be careful to watch where all of the parts go. This is intended to be removed because it is held in by screws, but shouldn’t need to be removed. | 3 |  |
| #7 | Remove the four clips that fasten the drum-magazine holder to the side of the gun with the removal of one screw at the base of each of the four clips. These are removable because each one just has a screw. | 2 |  |
| #8 | Remove the cocking arm fore grip from the cocking arm pushrod with the removal of 4 screws. The fore grip then pulls apart into two identical halves and off of the gun. This intended to be removed because it is held together by screws. | 2 |  |
| #9 | Remove the stock. This piece is held in by two screws facing inward into the gun. The stock then pulls strait off the end. Be careful when removing because the stock holds all of the firing springs pressure, and will shoot off when screws removed This may not be intended to be removed because it can be difficult to repressurize the spring. | 3 |  |
| #10 | Outer most casing removed by removing the ten screws that clamp the two pieces of the outer casing together. One half of the casing lifts off of the top by pulling off carefully with hands. This is intended to be removed because only screws hold it in. | 3 |  |
| #11 | Muzzle removed from end. This just lifts off the end because it is held in place by the two casings clamping around it so it is intended to be removed. | 1 |  |
| #12 | Remove the trigger, comprised of the trigger and trigger spring by lifting off of where it rests, the spring can separate by pulling off of the back. This is intended to be removed because it is just set into place. | 1 |  |
| #13 | Remove the barrel by simply pulling out of its location towards end of casing. This is intended to be removed because it simply rests between the two halves of the casing. | 1 |  |
| #14 | Remove the firing spring from the back end of the gun by pulling it straight off the end of the firing chamber. This is intended to be removed because it simply pulls out of the back of the gun. | 1 |  |
| #15 | Remove the firing assembly which is comprised of the cocking arm pushrod, the firing chamber the push rod lock, and the holding bracket. This whole assembly removes by pulling it straight off of the outer casing. This is removable because they are just simply placed in there, but to get to them, you need to remove the spring which is difficult to remove. | 3 |  |
| #16 | Each of these four different parts are separated into their individual components. These each just pull apart easily by hand. They take almost no force to separate since they are normally forced together by spring force. These are intended to be removed because they are loosely put together. These parts can no longer be broken apart because they are press fit into place or glued into place, and would require breaking to get them apart. This therefore is the end of the disassembly. | 3 |  |
Mechanisms
Cocking Mechanism System
One of the major systems that can be found on this toy is the cocking mechanism. This part can be classified as a major subsystem that is required for the rest of the toy to function properly. The major part of the system is the fore-grip that is visible and must be used to compress the firing spring. The visible fore-grip is attached to another mechanism, the Cocking Arm Pushrod which cannot be seen until the outer casing has been removed. These two pieces of the subsystem are directly connected to one another and are what is used to create all of the potential energies used to fire each dart. With its direct connection to the firing chamber, the pushrod extends the lock on the firing chamber which compresses the firing spring that is eventually released once the trigger is pulled to release the dart.
Design Revisions
Dart
The dart is the single most important and iconic system that Nerf has created. The darts have maintained a classical look with the long foam body and a plastic tip. Typically, the plastic tip of the dart is rounded and heavier than the rest of the dart so it can carry the weight of the dart through the parabolic flight path that it takes. In order to make these darts more efficient and cost effective, multiple changes can be made to the dart. The foam body of the dart can be replaced or coated with a material that resembles teflon to eliminate as much friction as possible while firing to maintain as much energy as possible while it travels through the barrel as well as reinforcing the dart to increase its durability. This would open up a new market for the darts alone which would lead consumers to purchase these high-performance darts to be used with any Nerf gun the currently own.
