Unit R014 - Engineering Manufacture - Topic Area 1 - Retrieval E

Additive Manufacturing -

Additive manufacturing refers to the process of?

• Use maths to help with designing products.

• Creating products by adding material rather than taking it away.

• Adding chemicals and elements into the product.

• Using nuts and bolts to hold the product.

Additive Manufacturing -

Additive manufacturing can also be referred to as?

• 3D Printing

• CNC

• CAM

• Rapid Prototyping

Additive Manufacturing -

Select the image that represents FDM (Fused Deposition Modelling).

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Answer explanation

FDM is the additive manufacturing technique that mot people think of when discussing 3D printing.

FDM uses a spool of wire that is fed through a heated nozzle in order to build the product up a layer at a time.

The most common material used in FDM is ABS however other thermoplastics can be used.

Additive Manufacturing -

Put these steps into order to show the key sequence when carrying out additive manufacturing.

• Create a CAD design and convert to an STL file.

• Machine to manufacture product layer by layer.

• Remove the part and post process (remove support features etc.)

• The build software splits the design into layers.

• Load the raw material and prepare the machine.

Additive Manufacturing -

Select the advantages of additive manufacturing processes.

• Parts with incredibly high dimensional accuracy can be created.

• It is sustainable due to the reduction is waste generated.

• It is incredibly quick and able to produce high volume high sales components.

• Businesses require less tooling inventory.

• The parts require no secondary processing and can be used immediately.

Answer explanation

In comparison to CNC and industrial robotics additive manufacturing is still comparatively slow.

Many additive manufacturing processes require secondary processes such as the removal of build material and support structures.

Additive Manufacturing -

Even though the equipment is usually encased in a chamber there are still associated risks. Select the correct ones.

• Inhalation of dusts and powders.

• Skin irritation from liquids and powders used.

• Liquids and powders used can be flammable.

• Machines require manual loading, unloading and maintenance leading to ergonomic injury or stress.

• Rotating features that move at speed can cause entrapment hazards.

Answer explanation

The biggest safety issue in additive manufacturing is exposure to the build material.

Additive manufacturing uses powders and liquids at times. These substances can cause breathing issues and skin irritation.

Users should have no exposed skin, full face protection and either good ventilation or breathing equipment.

Additive Manufacturing -

Add the part to the most likely additive manufacturing process.

• Powder Bed Fusion

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• Stereolithography

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• Laminate Object Manufacturing

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• Fused Deposition Modelling

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