M5 Design For Manufacturing and Assembly

Flashcards covering the key vocabulary from the lecture notes.

Product Dissection

Process of product dissection to determine main parts, assemblies/sub-assemblies, and individual parts.

Fastener tools

Used to unlock screws rivets, brackets for main assembly.

Cutting tools

Used to unlock snap on parts/perm lock parts for sub assemblies.

Filing tools

Used for removing welded/glued/moulded/perm lock individual parts

Bill of Material (BOM)

A document that keeps track of parts, names, material, finishing, product method and quantity during the dissection process.

Common materials used in product deconstruction

Metals, Plastics, Fabrics/ leather.

Principles of basic mechanical movements

Rotary, Oscillating (spring force), Linear, Reciprocating.

Manufacturing methods

Explain the different manufacturing methods used for the parts.

Technical drawings

Purpose and application of technical drawings.

Orthographic drawings

orthographic drawings requirements for design presentation.

Fastening tools

Fasteners, such as nails, screws, bolts, and other specialty hardware.

Claw Hammer

driving nails into, or pulling nails from, some other object

File

a widely used hand-cutting tool in the workshop, a hard piece of high-grade steel with slanted rows of teeth

Leather Working Awl

tool with a sharp metal point used for marking or piercing leather

Actuators

devices that convert some stored energy into motion

Cam

rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion

Gears

transmit torque and to adjust rotational velocity.

Lever

made of a rigid beam and a fulcrum

Ratchet

mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction

Product graphics

set of artwork containing basic information of the brand, the nature of the product and the usage instructions.

Screen printing

printing technique that uses a woven mesh to support an ink-blocking stencil

Pad printing

printing process that can transfer a 2-D image onto a 3-D object using a silicone pad

Foil Transfer Printing

dry printing method in which a heated die and foil are used to apply graphics to a surface

In-mould labelling

use of paper or plastic labels during the manufacturing of containers by blow molding, injection molding, or thermoforming processes.

Metals

strong, hard and shiny materials that can be hammered into different shapes without breaking.

Plastics

materials made from chemicals and are not found in nature. They are strong and waterproof.

Mechanical and Physical Properties

properties of materials determined by chemical composition and internal structure.

Conductivity

measure of the quantity of heat that flows through a material.

Corrosion resistance

describes a material’s ability to prevent natural chemical or electro-chemical attack by atmosphere, moisture or other agents

Ductility

ability of a material to deform plastically without fracturing and retain the new shape when the load is removed.

Hardness

defined as a material’s ability to resist permanent indentation

Wear resistance

measure of a material’s ability to withstand the effect of two materials rubbing against each other.

Three Primary Colors

Red, Yellow, Blue.

Three Secondary Colors

Orange, Green, Violet.

Finishing processes

alter the surface of a manufactured part in order to achieve a particular characteristic

Laser engraving

uses a specialized laser machine to create extremely precise marks and designs on metal or plastic parts.

Powder coating

spraying dry powder onto a surface, usually via an electrostatic method, and then curing the part in an oven.

Plating

permanently affixing metal onto a surface.

Anodizing

electrolytic process that crates a hard oxide layer, resulting in a highly corrosion-resistant coat.

Smart materials

have properties which change reversibly, depending on changes in their surroundings

Thermochromics pigments

change colour at specific temperatures.

Photochromic pigments

change colour when exposed to light.

Shape memory polymer

polymer that can be bent out of its original shape and then returned to its original shape when heated.

Production

creates goods and services.

Job production

items are made individually and each item is finished before the next one is started.

Batch production

groups of items are made together. Each batch is finished before starting the next block of goods.

Flow production

identical, standardised items are produced on an assembly line.

Perspective drawings

show an object in 3D getting smaller in the distance.

Isometric drawings

show an item in 3D on a 2D page.

Exploded diagrams

show how a product can be assembled and how the separate parts fit together

Orthographic projections

working drawings in either a first or third angle projection and show each side of a design without perspective

Dimensions

specification of the size and shape of a part or assembly.

Section view

view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object.

Detail view

clarify specific areas of a drawing.

Product rendering

use of computer rendering programs to create CGI (computer-generated imagery)

Digital fabrication

design and manufacturing workflow where digital data directly drives manufacturing equipment to form various part geometries.

3D Printing

printing is an additive manufacturing technology.

Fused Deposition Modeling (FDM)

Desktop 3D printing technology for plastic parts, extruding a plastic filament layer-by-layer onto the build platform.

Stereolithography (SLA)

produces parts with high levels of detail, smooth surface finishes, and tight tolerances.

Selective Laser Sintering (SLS)

melts together nylon-based powders into solid plastic.

Computer numerical controlled (CNC)

incoporate high-spec precision from a computer aided design (CAD) to manufacture a product.

Laser cutting

technology that uses a laser to vaporize materials, resulting in a cut edge.

Injection Molding

A manufacturing process for producing parts by injecting molten material into a mold.

Thermoforming

A manufacturing process where a plastic sheet is heated to a pliable forming temperature, then formed to a specific shape in a mold, and trimmed to create a usable product.

Blow Molding

A manufacturing process by which hollow plastic parts are formed. It involves inflating a hot plastic parison inside a closed mold until it conforms to the mold cavity.

Casting

A manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify.

Forging

A manufacturing process involving the shaping of metal using localized compressive forces.

Extrusion

A manufacturing process where material is pushed through a die of the desired cross-section.

Drawing

A metal forming process that uses tensile forces to stretch metal over a die.

Stamping

A metal forming process that includes a variety of sheet-metal forming manufacturing processes, such as punching, blanking, embossing, bending, flanging, and coining.

Rolling

A metal forming process in which metal stock is passed through one