4.4 Manufacturing Processes

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Examples of Additive techniques

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16 Terms

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Examples of Additive techniques

Paper-based rapid prototyping

Laminated object manufacture (LOM)

Stereolithography

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Paper-based rapid prototyping

Layers of paper cut and glued together to create a 3D shape. Low-fidelity.

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Laminated object manufacture (LOM)

3D printing technique that involves the layer-by-layer construction of objects using sheets of material, typically paper, plastic film, or metal foil

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Stereolithography

Solidification of powder using 3D printing

<p>Solidification of powder using 3D printing</p>
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5

Examples of subtractive techniques

Cutting (Laser, Saws, Chiseling, Drilling)

Machining (Router or Milling machine)

Turning (Metal or Wood Lathe)

Abrading (Sanding, Filing, Grinding)

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Examples of shaping techniques

Moulding

Thermoforming

Laminating

Knitting

Weaving

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Moulding

Injection moulding, extrusion

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Thermoforming

Heating plastics and vacuum forming, or using a strip heater to heat and bend acrylic

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Laminating

Flexi-plywood by gluing layers together over a former/shaped mould

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Casting

Sand casting, Die casting- usually solid to liquid then cooled

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11

Examples of Joining techniques

Permanent

Temporary

Adhering- Gluing

Fusing (welding)

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Permanent

Methods used to permanently bond or join materials together, creating a strong and lasting connection.

e.g. Welding, Brazing, Soldering (joining metals by melting a filler metal), Pop riveting

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Adhering- Gluing

once formed, cannot easily be separated

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Fusing (welding)

Permanent process involving the heating of the surfaces such as metals and plastics. This process isn’t recommended when considering design for disassembly

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15

Temporary

(non-permanent fastening)

Fastening or joining materials mechanically through the use of screws, rivets, bolts, pins, clips, nails, press studs and snaps.

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Adv and Disadvantages of permanent vs temporary

Temporary:

ease for disassembly at the expense of permanent damage to the materials used eg. installing screws

Adjustability: Temporary joining methods offer flexibility in terms of adjustment and alignment of the joined parts.

Permanent:

Strength and durability: Permanent joining techniques, such as welding or adhesive bonding, can create strong and durable connections between materials.

Seamless appearance

Load distribution: Permanent joining techniques distribute the load across the entire joint, minimizing stress concentration.

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