adonis pimienta-penalver mae377 project07

8/14/2019 Adonis Pimienta-Penalver MAE377 Project07

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Project 07Reverse Engineering & Product RedesignAdonis Pimienta-Penalver

3270-5895

Fall 2009

University at Buffalo

MAE 377


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Contents1 Introduction .......................................................................................................................................... 3

2 Phase I ................................................................................................................................................... 3

2.1 Products ........................................................................................................................................ 3

2.1.1 Cast Metal Airplane ............................................................................................................... 3

2.1.2 Deodorant Stick ..................................................................................................................... 3

2.1.3 Step meter / Watch ............................................................................................................... 3

2.2 Result ............................................................................................................................................ 4

2.2.1 Flaw Identification................................................................................................................. 4

2.3 Phase I Conclusion ........................................................................................................................ 8

3 Phase II .................................................................................................................................................. 9

3.1 Deodorant ..................................................................................................................................... 9

3.1.1 Differences between old and new design ............................................................................. 9

3.1.2 Deodorant Parts .................................................................................................................. 10

3.1.3 Deodorant assembly. .......................................................................................................... 12

3.1.4 Deodorant rendering. ......................................................................................................... 14

3.1.5 Deodorant Drawings ........................................................................................................... 18

3.2 Step-Meter .................................................................................................................................. 20

3.2.1 Differences between old and new products ....................................................................... 20

3.2.2 Step-Meter parts ................................................................................................................. 20

3.2.3 Step-Meter Assembly .......................................................................................................... 23

3.2.4 Step-Meter Renderings ....................................................................................................... 24

3.2.5 Step-Meter Drawings .......................................................................................................... 28

4 Conclusion (Challenges/Outcomes) .................................................................................................... 30

5 References .......................................................................................................................................... 30


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1 IntroductionIn project 07, it is my goal to reverse engineer and redesign a common product in order to provide

with a solution to its shortcomings and an alternative to its design. I have chosen three preliminary

products as candidates for this project, these are listed below.

The products are required to meet a set of criteria in order to become viable for the design process.The criteria are: at least 12 parts, available on the market, moderate in size, easy to measure and

interesting to me. The objects have to have a design flaw that hinders its performance or its aesthetic

appeal, which is to be corrected by me.

After choosing a product or two products to work on, my objective consists of creating a solid

model of the part/parts, assemble them, and illustrate the reasons why my redesigned model is better

than the original one.

The project is divided in two phases. Phase 1 is preliminary and phase 2 consists of the bulk of the

redesigning/reverse engineering part of the project. I hope you enjoy this presentation.

2 Phase I2.1 Products

The three products I have chosen are: Cast metal airplane model of a soviet Tupolev 144, a mens

deodorant stick by Degree and a step meter/watch by Wic . The flaws that were identified with the

products were:

2.1.1 Cast Metal AirplaneThe support of the airplane is quite weak, and makes the whole model turn over to the slightest

touch. The connections between the shaft and the base of the support are not strong enough to

successfully keep the structure from toppling over. My proposal is to redesign the support structure, and

unify as many components as possible in order to reduce the loose fits and create a sturdy base without

removing any aesthetical qualities.

2.1.2 Deodorant StickOnce the deodorant is used it cannot be recharged and used again; this is harmful for the

environment, costly for the customer and unpractical. My proposal is to design a system that would

allow the deodorant to be recharged with another stick; each time after the old one is used.

2.1.3 Step meter / WatchThe reason why the design of this application is flawed is because the lock system to close the lid is

quite stubborn and is very hard to open. Also, the display screen cannot be seen unless this lid is

opened, this means that if the user is exercising and decides to check on the time or the number of

steps, he or she must open the lid, which is already difficult enough to open, and check the display; in

order to do this, the user would probably have to stop walking / running, which could be a bothering


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task, it would be much more practical to eliminate the lid and create a transparent, permanent cover;

this way, the user would not have to stop his / her routine to check the display screen.

2.2 ResultIn the tables below, the flaws of each individual product are listed, as well as their redesign idea.

2.2.1 Flaw IdentificationProduct

Description

Pictures of the Product Flaw Picture Flaw Description

1 A die cast metal

airplane (scale

1:350) of the soviet

aircraft: Tupolev Tu

144. The product is

supported by three

pieces.

The support

structure has many

pieces, which are

loosely fitted and

contribute to the

general instability

of the product.

2 A common

deodorant stick

used to eliminate

odors from the

body. It uses a

rotating axle to lift

or lower the stick

at the users

pleasure.

Once the user has

utilized the stick

completely; he or

she has no more

alternative but to

toss the entire

deodorant to the

garbage. This can

be harmful for the

environment and

costly to the user.


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3 A common step

meter/ watch

application for

people who walk or

run to exercise.

The lid is opaque

and difficult to

open; the display

screen can only be

seen by opening

the lid, and this

thwarts the user

from enjoying a

smooth exercising

session, since

he/she will

probably have to

stop moving in

order to open the

lid.

Figure 1: The table describes the flaws of each individual product, with corresponding pictures.


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Original Design Redesign Redesign

Description

1 Unified

support

structure; the

model airplane

is now

supported one

piece, which

makes it

sturdier, more

enjoyable and

more durable.

This improves

the aesthetics

of the model,

and its product

life.


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2 A stick

recharge

system, in

which the user

can go to the

local store and

buy a stick for

a much lower

price than

having to buy

another

deodorant

altogether.

This improves

the market

appeal of this

product,

elongates its

durability and

is more

economic for

the customer.


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3 The lid is

removed and

replaced by a

hermetically-

sealed

transparent

screen that

still protects

the display

screen and

permits the

user to check

his/her

performance

or the time

without having

to stop

moving. This

improves the

products

functionality,

its ergonomics

and aesthetics.

Figure 2: The table highlights the redesign proposal for the product. The sketches were done by hand.

2.3 Phase I ConclusionThe goals of the first phase of this project is to get the student familiarized with the candidates for

redesign, and present the ideas that will ultimately be applied for the reverse engineering and redesign

of one of the three products. The airplane model, stick deodorant and step meter are all valid

candidates for the redesign. It is my task, as engineer, to create the most efficient, ergonomic and

aesthetically pleasing design possible that balances cost with benefits.


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3.1.2 Deodorant Parts

(A) (B)

(C) (D)


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(E) (F)

(G)Table 1: A: The base, B: the bottom cap, C: the cap, D: the main body, E: the screw, F: the stick, and G: the stick holder. All

these pieces make up the new deodorant design.


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3.1.3 Deodorant assembly.

(A) (B)


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(C) (D)Table 2: Various view of the exploded and unexploded assembly of the deodorant.


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3.1.4 Deodorant rendering.Below are rendered images of the deodorant using Pro/Engineers powerful ARX tool. All

components are made out of plastic.

(A)


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(B)


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(C)


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(D)Table 3: Rendered pictures of the deodorant assembly for the new redesigned device in (A) and the original productin (B).Also, in (C), a picture of the redesigned internal mechanism and snapshot of the animation in (D).


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3.1.5 Deodorant Drawings

Table 4: BOM Drawing of the Deodorant


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Table 5: Dimensions of the deodorant device


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3.2 Step-MeterThe step meter is a device utilized by exercisers to count their steps during a workout session, or

to simply produce an estimate of how much they have walked. These devices are useful for the elderly

also, as they can depend on a reliable method to keep track of how much exercise they have done for

the day.

3.2.1 Differences between old and new productsIf the display of the device is blocked by another object, then this means the user will have to stop

exercising in order to see the small screen. The clip is in the way of the view; therefore there is no other

way of seeing the screen but that of opening the lid, which is quite difficult to open in itself.

I removed the clipping system from the front of the device and placed it in the back of it, to allow

and clear and quick look at the screen. I made the resultant front cover transparent to achieve the same

end.

My design ensures that there will be no need to stop running or exercising, simply by creating a

transparent cover for the display screen, the user can get what he/she wants without having to halt

their routine.

3.2.2 Step-Meter parts

Front Cover Battery


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Circuit Board Back-Cover Clip

Display Board Back Cover

Back Cover Spring Hammer


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Keyboard Pin

ScreenTable 6: Parts of the final pedometer assembly.


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3.2.3 Step-Meter Assembly

(A) (B)

(C) (D)Table 7: Assembly of the redesigned pedometer, both in exploded and normal manner.


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3.2.4 Step-Meter Renderings

(A)


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(B)


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(C)


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(D)Table 8: Rendered Images of the new redesigned pedometer in (A), the original device in (B), the new mechanism in (C), anda snapshot of the animation in (D)


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3.2.5 Step-Meter Drawings

Table 9: BOM Drawing of the step meter


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Table 10: Dimensions of the pedometer


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4 Conclusion (Challenges/Outcomes)The process of creating the parts and assemblies for these two different products was at times

challenging, as the parts required performing blends or sweeps quite a few times. The greatest

challenge was creating the 2D dimensional drawings, as these can be quite cumbersome at the time of

creating the balloons and numbering each part correctly. Also, during the creation of the rendered

models and animations, the machine can be slow and one must be able to plan ahead and deal with this

problem.

Despite the challenges listed previously; I was nevertheless able to apply my knowledge of

Pro/Engineer in a very extensive way in this project, almost every skill I have learned until now had to be

applied in this project. This project helped me to work faster and plan out ahead of time to be able to

use my time wisely. Just as this project is dedicated to creating a more efficient design, I was able to

learn how to be more efficient through it.

5 ReferencesARX Workshop Tutorial, PTC.http://www.ptc.com/go/wildfire/learn/tutorial_443/printable_page.htmBasic of Advanced Rendering Extension, PTC. http://www.ptc.com/go/wildfire/learn/tutorial_2161/index.htm

Create BOM Table in Pro/E,http://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-

detailing.html.

Pro/E animation design tutorial, Leng Feng Lee. 2008. Based on tutorial by Mr. Vincent Kostovich.
http://www.ptc.com/go/wildfire/learn/tutorial_443/printable_page.htmhttp://www.ptc.com/go/wildfire/learn/tutorial_443/printable_page.htmhttp://www.ptc.com/go/wildfire/learn/tutorial_443/printable_page.htmhttp://www.ptc.com/go/wildfire/learn/tutorial_2161/index.htmhttp://www.ptc.com/go/wildfire/learn/tutorial_2161/index.htmhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.proengineertips.com/drawing/tutorial-create-bom-table-in-pro-e-detailing.htmlhttp://www.ptc.com/go/wildfire/learn/tutorial_2161/index.htmhttp://www.ptc.com/go/wildfire/learn/tutorial_443/printable_page.htm

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