The Quality Function Development Accounting Essay

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House of quality is one of the objectives of quality function development. It helps to identify engineering characteristics that most important to satisfy customer requirements. After all, will aid to translate customer requirements into critical to quality engineering characteristics. Highest ranking of engineering characteristic from house of quality are either constraints or design variables whose value can be used as decision-making criterion for evaluating candidate designs. Once engineering characteristics are set, they are documented in product design specifications.

The Voice of Customer Room ("What" Room): in customer requirements, we using a technique called affinity diagramming. in this section normally list down 5 or 10 most important needs. The affinity diagramming process are number of the success in Quality Function Development, which is include a discussion to reach consensus as to what the customers really meant by their comments. by using powerful technique for reconciling the different interpretations held by marketing, design engineering or other services. The results from the affinity diagramming are placed into the voice of customer requirement room in the House of Quality.

The Importance Ratings Rooms: In this section there are 2 important things to put it. there are the Importance Ratings and Customer Competitive Assessment . Normally marketing researcher or designs the market research must look at this section, so that they can use the results as inputs to successfully complete the Importance Ratings and Customer Competitive Assessment rooms. These sections are put on the matrix where benefit rankings and ratings are assembled for analysis. Importance Rankings provide the team with a main of customer requirements. By this it allows us to spot strengths and weaknesses in both our product and other competitor products.

The Engineering Characteristic Room ("How" Room): In Engineering Characteristic section, we need participant the entire team by asks for each "What", "How would we measure product performance which would provide us an indication of customer satisfaction for this specific 'What'?". Normally we use W and H question for this session. The team member needs to come up with at least one product performance measure; the team member must write down all the answer and recognizes that it takes several measures to adequately characterize product performance.

The Relationships Matrix Room: Next step after complete the Engineering Characteristic section, we need to compare the relationships between all Voice of Customer and the Relationships Matrix section. This section we need to compare the relationship between engineering characteristic and voice of customer room. In this task the team systematically asks about W and H question "What, how, why, which, when, and whose". This is a consensus decision within the group. Based on the group decision, the team assigns a strong, medium, weak or no relationship value to this specific. This process continues until all the issues have been reviewed with concrete answer. The technical community begins to assume team leadership in these areas.

The Absolute Score and Relative Score Rooms: next we move on section the Absolute Score and Relative Score. Model or hypothesis use as how product performance contributes to customer satisfaction. Referring on the Importance Ratings and the Relationship Matrix values, calculates the value Absolute and Relative Scores. These calculations are the team's best consideration as to which product performance measures in engineering characteristic exert the greatest impact on overall customer satisfaction. By this we know where the product has got to measure up strongly in order to beat the competition.

The Correlation Matrix Room: The Correlation Matrix room is used to help resolve physical design elements which conflict with one another by highlighting conflict reflected in the product. The customer has expressed preferences that these be maximized. The analysis that takes place in the Correlation Matrix section systematically forces a technical review for all likely issue and then alerts the team to either optimize or eliminate these issue or consider design alternatives, as mentioned earlier sometimes symbiotic relationships between Engineering Characteristic and voice of customer do surface in this analysis. This analysis also allows the team to capitalize on those symbiotic situations.

.The Technical Competitive Assessment Room: Technical Competitive Assessment Room is section where engineering applies the measurements identified during the construction of the "How" room. Technical Competitive Assessment Room is where the team tests the hypothesis created in the Relative Score room. It useful the team to confirm that it has created "how" that makes sense that really does exact measure characteristics leading to customer satisfaction. Analysis in the Technical Competitive Assessment and Customer Competitive Assessment section can also help expose problems in perception. After comparing performance between both previous problems we can simple conclude which is the best.

The Target Values Room: Target Values contains the recommended specifications for the product we want to create. These specifications will have been well thought out, reflecting customer needs, unique and competitive offerings and technical trade-off needed either design or manufacturing constraints. The House of Quality matrix is often used the phase one matrix. In the QFD process there is also a phase two matrix to translate finished product specifications into attributes of design and their appropriate specifications. Sometimes a phase three matrixes is used to attributes of design specifications into manufacturing process specifications.

3.6 PRODUCT DESIGN SPECIFICATION (PDS)

Customer Requirement

Weight factor

Component Rating

Weight Rating

Shaft

Screw

Bearing

Shaft

Screw

Bearing

Can be use > 3years

Energy saving

Multi-function

Easy to repair

High power consumption

3.7 CONCEPT DESIGN

No.

Shaft

Screw

Bearing

1

Steel (AISI 1095 CD)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 14

P = 500W

Stainless steel

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL)

F = 3450 N

N = 38000 rpm

D = 22mm

2

Steel (AISI 1095 CD)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 14

P = 500W

Bronze

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL)

F = 3450 N

N = 38000 rpm

D = 22mm

3

Steel (AISI 1095 CD)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 14

P = 500W

Alloy

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL)

F = 3450 N

N = 38000 rpm

D = 22mm

4

Gray cast iron (ASTM 50)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 15

P = 600W

Alloy

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL)

F = 3450 N

N = 38000 rpm

D = 22mm

5

Gray cast iron (ASTM 50)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 15

P = 600W

Stainless steel

d = 10 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL*)

F = 3450 N

N = 48000 rpm

D = 22mm

6

Gray cast iron (ASTM 50)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 15

P = 600W

Bronze

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL*)

F = 3450 N

N = 48000 rpm

D = 22mm

7

Gray cast iron (ASTM 50)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 15

P = 600W

Bronze

d = 10 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSL*)

F = 3450 N

N = 48000 rpm

D = 22mm

8

Aluminium Alloy (5052 H36)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 16

P = 1000 W

Alloy

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSH)

F = 4000 N

N = 23000 rpm

D = 22mm

9

Aluminium Alloy (5052 H36)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 16

P = 1000 W

Alloy

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSH)

F = 4000 N

N = 23000 rpm

D = 22mm

10

Aluminium Alloy (5052 H36)

Agitator Shaft with 1 bearing

d = 21 mm

F.O.S = 16

P = 1000 W

Alloy

d = 8 mm

L = 115mm

ld = 55 mm

Chrome Steel

(608 2RSH)

F = 3450 N

N = 22000 rpm

D = 22mm

3.8 CONCEPT EVALUATION

Concept

Engineering Characteristic

1

2

3

4

5

6

7

8

9

10

Material used

Dimensions of parts

Strength

Stiffness of spring

Torque

3.9 DETAILED DESIGN

We have used a number of steps to draw about our design around components. We have been using solid Work's software to draw it accurately based on what we calculate. Besides, we also set standards ISO for drawing and unit we use in mm for each component. All the component drawing we made are refer to the catalog for example bearing we refer to SKF catalog, screw we refer to Fastec Fasterner catalog and shaft we refer to vacuum cleaner standard part catalog. We also refer calculation and selection of component based on the Shigley's Mechanical Engineering Design ninth edition written by Richard G. Budynas and J. Keith Nisbeth.

3.10 DESIGN ANALYSIS

3.11 SUMMARY

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