Product Design and Digital Manufacturing Notes

Definition of Product Design: Product design is the end-to-end process of conceiving, analyzing, designing, prototyping, and testing a product for its subsequent manufacturing and commercialization, aimed at solving or satisfying a specifically detected need.
Key Characteristics of a Product:
- Reason for Being (Raó de ser): Every product must address and solve a specific problem or fulfill a identified need.
- Quality (Qualitat): Represents the degree of effectiveness with which the product resolves the target problem or satisfies the need.
- Design (Disseny): Incorporates elements of originality, ergonomics, and aesthetics, reflecting how the user evaluates the visual and functional aspects of the product.
- Definition of Ergonomics: A scientific discipline focused on adapting work, systems, tools, and environments to fit the physical and mental capabilities and limitations of human beings.
- Brand (Marca): Establishes identity and ensures differentiation within the competitive market.
- Packaging: The physical presentation and initial visual element encountered by the buyer upon receiving the product.
- Price (Preu): The monetary valuation of the product, established by balancing production costs with target profit margins.

Sequential Stages of Product Design:
1. Identify and Analyze: Identify and analyze the specific problem or user need (Identificar i analitzar el problema o necessitat).
2. Search and Gather Background: Search for relevant information, existing solutions, and background references (Cercar informació i antecedents).
3. Explore and Design: Explore creative ideas and sketch or model potential candidate solutions (Explorar les idees i dissenyar possibles solucions).
4. Plan and Develop: Plan the execution workflow and fully develop the chosen solution (Planificar la feina i desenvolupar la solució escollida).
5. Test and Refine: Conduct testing on the prototype and iterate improvements based on empirical observations (Testejar i millorar la solució segons les observacions).

Five-step product design process roadmap

Definition of Digital Manufacturing: A comprehensive suite of technological processes designed to create physical products or projects directly from digital 2D or 3D models using programmable manufacturing machinery.
3D Printing (Additive Manufacturing):
- Fused Deposition Modeling (FDM): The primary and most common additive method (fabricació per fusió de material).
- Working Mechanism: A thermoplastic filament is heated and melted within an extruder assembly, then deposited layer upon layer onto a build platform to construct the complete physical object.
- Associated File Extension: Utilizes the .STL file format for 3D printing preparation.
- Anatomy of an FDM 3D Printer:
- Filament (Filament): Thermoplastic raw material supplied on a spool.
- Feeder (Alimentador): Drive mechanism that pushes and regulates the flow of filament.
- Extruder (Extrusor): The heated module that melts the incoming solid plastic filament.
- Nozzle (Broquet): Fine opening at the tip of the extruder through which liquid plastic is extruded.
- Part (Peça): The 3D physical object being generated layer by layer.
- Base / Build Plate (Base): The flat bed surface upon which the object is printed.

Diagram of FDM 3D printer components including filament, feeder, extruder, nozzle, printed part, and base

Laser Cutting (Subtractive Manufacturing):
- Definition: A subtractive digital manufacturing process that converts 2D digital vector designs into physical, laminated objects.
- Working Mechanism: Uses a focused, high-power laser beam operating at high speeds and extreme precision to cut through or engrave material sheets.
- Associated File Extension: Utilizes the .DXF file format for vector layout transmission.

Advantages of Using Onshape:
- Easy to Learn: Intuitive user interface tailored specifically for beginner CAD modelers.
- Powerful and Versatile: Capable of creating both simple isolated parts and complex multi-part mechanical assemblies.
- Multiplatform Access: Runs entirely within any web browser regardless of the host operating system.
- Real-Time Collaboration: Supports simultaneous multi-user collaboration inside the exact same document.
- Cloud-Native: Operates completely in the cloud, removing requirements for local software installations or manual backup saving.
- Educational Access: Provided free of charge for educational institutions and students.
- Digital Manufacturing Integration: Direct native export capabilities to .STL (for 3D printing) and .DXF (for laser cutting).