Celko, Obenderfer, Oliver, Portz, Valle 1

DUMPLING MAKER

DESIGN PROJECT Intro to Engineering Design (EDSGN 100) Section 202

Submitted By: John Portz,

Rafael Valle, Scott Obenderfer,

Nailah Oliver and Elizabeth

Celko

Submitted to Dr. Xinli Wu P.E.

Celko, Obenderfer, Oliver, Portz, Valle ii

Abstract:

Group 6 designed a semi-automatic dumpling maker where the filling and cutting are controlled

by a hand crank with the dough made separately. The dumpling maker can make approximately

10 dumplings per minute. Throughout this report you will find specific design specifications,

prototype and digital images including features and operation instructions.

Celko, Obenderfer, Oliver, Portz, Valle iii

Table of Contents:

1. Introduction (Elizabeth Celko & Nailah Oliver) …(1)

2. Description of Design Task

a. Problem Statement (Rafael Valle)…(1)

b. Mission Statement (Rafael Valle) …(1)

c. Design Specifications (et. All) … (4)

3. Design Approach

a. Project Management - Gantt Chart (et. All) … (2)

b. Design Selection Matrices (Rafael Valle) … (3)

c. Customer Needs Assessment (Nailah Oliver) … (4)

d. Concept Generation (Elizabeth Celko & Nailah Oliver) … (5)

4. The Final Design and Prototype

a. Prototype Scale and Digital Images Prototype (Elizabeth Celko, Scott Obenderfer, Nailah

Oliver & Rafael Valle) … (6)

b. Complete Set of Working Drawings of Final Design (John Portz & Scott Obenderfer) … (6)

c. Design Features (Elizabeth Celko) … (7)

d. Operation Instructions (Elizabeth Celko) … (7)

5. Engineering Analysis

b. Cost Analysis (Elizabeth Celko & Nailah Oliver) (8)

6. Summary and Conclusions (Nailah Oliver) (8 & 9)

7. References and Acknowledgements (Nailah Oliver) (9)

Celko, Obenderfer, Oliver, Portz, Valle 1

Introduction:

Six groups were assigned to design and prototype a dumpling maker suitable for

household or restaurant use. The dumpling makers were instructed to be (semi)automatic,

produce 10 or more dumplings per minute and costing less than $200. The dumpling maker

should also be both safe and easy to maintain. Group six designed five different dumpling

makers, each with different concepts; the chosen design will most efficiently meet the design

specifications and criteria.

Problem Statement:

The task of making dumplings is not only inefficient, it is also demanding, time consuming, and

messy. Therefore, households and restaurants need a more proficient way of creating this

delicacy.

Mission Statement:

Design and build a prototype of a dumpling maker suitable for use in either a household or a

restaurant.

Celko, Obenderfer, Oliver, Portz, Valle 2

Gantt Chart:

Gantt Chart 7/24/17 7/27/17 7/31/17 8/2/17 8/3/17 8/4/17 8/7/17 8/8/17

Target Specification

Information Gathering

Concept Generation/Selection

Brainstorming

Design Matrix

Working Drawing

Design Drawing

Prototype

Construction

Design Evaluation & Testing

Present

Project Report & Presentation Table 1

Celko, Obenderfer, Oliver, Portz, Valle 3

Design Matrices

Concepts

Criteria

Conveyor

Belt 'Maker

Vertical Filling

Push Maker

Horizontal

Maker

Crank/Center

Fold Maker

Precutting

Maker Reference

Semi-

automatic + + + + + 0

Dumpling

efficiency 0 - 0 0 - 0

Cost - 0 - - 0 0

Food Safety + - 0 0 - 0

Ease to

maintain + 0 - + 0 0

Ease to use + + - - 0 0

SUM +'s 4 3 1 2 2 0

SUM 0's 1 2 2 2 3 7

SUM -'s 2 2 4 3 2 0

Net Score 2 1 -3 -1 0 0

Rank 1 2 6 5 3 3

Continue? Combine Combine no no Yes Yes

Table 2

Section Criteria

Concepts

Conveyor Belt

Maker Vertical Push Maker

Precutting

Maker Combined Maker

Section Criteria weight Rating

Weighted

Score Rating

Weighted

Score Rating

Weighted

Score Rating Weighted Score

Semi-automatic 25 4 1 3 0.75 3 0.75 4 1

Efficiency 25 4 1 4 1 4 1 5 1.25

Cost 10 5 0.5 5 0.5 5 0.5 5 0.5

Safety 10 3 0.3 3 0.3 4 0.4 5 0.5

Ease to

maintain 15 3 0.45 4 0.6 4 0.6 5 0.75

Dishwasher safe 10 2 0.2 4 0.4 3 0.3 5 0.5

Total Score 3.45 3.55 3.55 4.5

Rank 3 2 2 1

Continue? no no no yes

Table 3

Celko, Obenderfer, Oliver, Portz, Valle 4

Design Specifications:

The dumpling maker should be automatic or semi-automatic.

The dumpling maker should produce no less than 10 dumplings per minute on average.

The material cost for the dumpling maker should not exceed $200 unless justifiable.

The dumpling maker should be safe as a food processor, easy to maintain, safe to use,

and dishwasher safe.

Customer Needs Assessment (Question/answer):

1. How long, on average does it normally take you to make 10 dumplings?

7 min 20 min 15 min

20 min 25 min 25min

20 min

2. How many dumplings do you make?

40 20 15

20 25 30

15 25 20

3. Would you rather a semi-automatic or automatic dumpling maker?

Automatic Semi-automatic Semi-automatic

Automatic Semi-automatic Semi-automatic

4. Would you prefer a bowl connected to the maker than not connected?

Connected Separate Separate

Separate Separate Separate

Separate Separate

5. How much would you be willing to spend on a dumpling maker?

$150 $300 $180

$200 $250 $200

6. How many dumplings would you like to make in one minute of using a semi-automatic

dumpling maker?

30 20 15

20 15 25

7. What would be your maximum capacity for storage of a dumpling maker?

4 inches 6 inches 10 inches

12 inches 24 inches 12 inches

8 inches

Celko, Obenderfer, Oliver, Portz, Valle 5

Concept Generation:

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Celko, Obenderfer, Oliver, Portz, Valle 6

Prototype Scale and Digital Images of Prototype:

The prototype scale used is 1:1.

Figure 6

Figure 7

Figure 9

Complete Set of Working Drawings:

Figure 10

Celko, Obenderfer, Oliver, Portz, Valle 7

Design Features

This combined design dumpling maker entails for an 18” X 8” piece of aluminum

sheeting angled at 26.50 that allows space for dough to sit while it is waiting to be flattened by

the connected rolling pin of a 2” diameter. The rolling pin is connected to a 1.5” steel gear and

aluminum handle that flattens the dough as well as moving back and forth the sliders connected

to the bottom of the design. Under our diagonally placed sheet metal, group six designed a

mechanism that is connected to the same handle that cranks the rolling pin. We constructed

sliders that move the dumpling press mechanism, each of the four dumpling holders of a 3.75”

diameter. Group six suspended a cylinder with a pump by a platform that allows for pumping the

desired amount of filling into each dumpling. With the filling in place, the dumpling press has a

handle that calls for manually folding the dumplings in half. Furthermore, while the dumpling

mechanism folds, it cuts and presses the ends the dumpling, due to the metal ridge along the

sides of each dumpling press holder.

Operation instructions

To operate this semi-automatic dumpling maker, place the prepared dough on the

diagonal surface and use hand crank to begin flattening the dough to the desired width. As you

roll the dough out with the crank the bottom section of the dumpling mechanism moves forward

horizontally and the dough drops on to the folding/cutting mechanism. Before folding, suspended

about the folding mechanism. It is pump operated so as the handle moves the folding mechanism

forward, pump the desired amount of filling in the center of each dumpling. After the filling is

pumped onto the dough, there is a handle connected to the folding mechanism that seals and cuts

the dough. After each dumpling is cut remove the excess dough and repeat.

Celko, Obenderfer, Oliver, Portz, Valle 8

Cost Analysis:

Table 4

Conclusion:

Team six came up with five designs in order to evaluate the mission of designing and

building a prototype of a dumpling maker suitable for use in either a household or a restaurant.

The final design chosen was a drawer sliding, slanted dumpling maker, capable of making at

least 20 dumplings in one minute. The group stayed under the $200 budget in making a

semiautomatic dumpling maker. The design matched or closely met all of the suggestions given

in the customer needs assessment. Overall, the drawer sliding dumpling maker was successful in

meeting major criteria and specifications.

Throughout this assignment, group six was faced with new problems that they learned to

assess. The dumpling maker project raised the challenge of making a compact machine, suitable

for people with little counterspace. Because of this, the group came up with a slanted design in

order to save horizontal space. Furthermore, the group had to come up with an automatic or

semiautomatic design without using electrical components. In order to satisfy this, the team used

a handle in order to move the drawer slide and progress the design. Team six efficiently

Item Quantity Unit Cost Total Cost

Aluminum rod 1' ht. 2"

diam.

1 $14.28 $14.28

Aluminum rectangle tube

2' ht. 1x1"

2 $9.82 $19.64

Aluminum sheet 3/16"

thick 2'x2'

1 $110.00 $110.00

Brass surface mount hinge

with holes

4 $1.61 $6.44

Aluminum rod 6" ht. 1/4"

diam.

1 $0.91 $0.91

Steel 1.5” gear 3 $7.13 21.39

Steel metal gear rack 16” 1 $11.58 $11.58

Total XXXXX XXXXX $182.24

Celko, Obenderfer, Oliver, Portz, Valle 9

addressed each obstacle in order to create their design, allowing them to be better equipped if

similar difficulties arrive in future objectives.

References:

McMaster-Carr, http://www.mcmaster.com, Web. Access 3 August 2017.

Acknowledgement:

Group six would like to thank Professor Xinli Wu as well as teaching assistances Chris

Trianosky and Michael Gillett for the ability to express new concepts and answer questions

proficiently, while adding constructive criticism to better our understand and skill level, to

develop the best for this project.