Development Methods and Tools

Question 1

a) Describe the basic principles around DFA methodology, I,e what the method aim for and the basic working procedure.

Answer 1

These tools is based on RULES and GUIDELINES, sometimes theres RULES and GUIDELINES are DIFFICULT TO APPLY and CONTRADICTY with each other.

Design of Assembly is based on the Premised that

50% of MANUFACTURING COST and
40 and 60% of the PRODUCTION TIME,

Question 2

What are The Principles of Design of Assembly

Answer 2

The Principles of Design of Assembly
Minimize part count
Design parts with self-locating features
Design parts with self-fastening features
Minimize reorientation of parts during assembly
Design parts for retrieval, handling, & insertion  Emphasize ‘Top-Down’ assemblies
Standardize parts…minimum use of fasteners.
Encourage modular design
Design for a base part to locate other components
Design for component symmetry for insertion

Question 3

What is the Procedure of Design for Assembly

Answer 3

Some examples of Steps of this technique are.

1. INFORMATION
2. DISMATLE
3. RE.-ASSEMBLE
4. ESTIMATE
5. EFFICIENCY
6. RE DESIGN

Question 4

What is Rapid Prototyping? Which are the potential benefits from using this technology/tool?

Answer 4

Is a process that is used to build prototypes, without building specialized tooling or casting. Existing techniques uses different ways to build layer by layer of the product until the final form of the product is obtained.

SOLID, LIQUID, POWDER

3D Printing

Steps

Create a CAD Model
Covert to STL File (STerio Lithography)
Slice STL Filet inr order to Get Layers
Build LAYER BY LAYER
CLEAN Finish and Polishing

Benefits of Rapid Prototyping

1. Realizing the Design Concepts
2. Incorporating the Changes Instantly
3. Saving Cost and Time
4. Customizing Designs
5. Minimizing Design Flaws

Question 5

What is periodic prototyping?

Answer 5

PPrototyping done on Calendar Basis Rather than a Phase Competition
Involvement of All areas In Product Development
More prototypes for each area enhance Cross Functional Problem Solving
Prototypes Communicate Progress of Product Development with Key Actors

Question 6

Describe the principle “design-build-test cycle” and explain what goes on in each phase and the corresponding managerial challenges in each phase

Answer 6

Frame The Problem: Define the Problem, Camera Example
Generate Alternatives: Based on the problem and gap in performace
Build: CAD or Models
Test: Test Solution in Technical and Customer Aspects. FIDELITY AND NOISE

Question 7

What skills are essential for each of the three phases of the design-build-test cycle of problem solving according to Wheelwright and Clark. Where do such skills typically reside in an organization (5p)

Answer 7

Design- Understanding about the customers needs and current level of performance in product/services. The skills usually resides in the marketing function sometimes with support from R&D

Build- This is the hard engineering work to develop the solution. The skill usually reside in the R&D Function.

Test- is the testing of concepts/solution in order to verify the results. The skill usually resides in the lab with is organized under R&D but it can also be organized in the production function.

Question 8

b) Prototypes can be used for different purposes, which are they?

Answer 8

Learning (Will it work?, How well does it meet the customers needs?)

Communication (Enrich communication with top management, vendors, partners, extended team members, customers and sources of financing)

Integration. To ensure that components and subsystems of the product work together as expected

Milestones: To demonstrate that the product has achieved a desired level of functionality