Manufacturing Processes Flashcards
what is important to consider when optimising material choice?
the availability of materials, and whether or not workers who can use and manufacture the materials into the product are readily available.
How can the manufacturing proccess be optimised?
using the most effective production method alongside DFM
How can transport be optimised?
consider the speed, reliability of the method of transport, as well as how direct/where the delivery is to. Environmental impact should be considered
One off/bespoke productions:
sometimes made to order, one product is made before the next
Batch production
a batch of potentially thousands. produced in a planned sequence, and quality is controlled and checked, batch size can be increased and decreased depending on demand.
High Volume production (4 points)
aka mass production, usually operate 24/7.
Continuous flow: Produced constantly and comes in one end and out the other
In line production: the product is moved from one process to the next
Repetitive flow: large numbers of identical products made at once
Full automated: check the name lmao
Modular/Cell production:
production cells/modules grouped together for small components of a larger product, workstations usually in an order to create one product at a time
Computer Integrated Manufacture (CIM)
designed on computer
prototyped on 3d printer
materials ordered monitored by computer
computer controlled machines produce the product
monitors quality with computer
packaged and stored by computer driven machinery
Laser Object Manufacture (LOM)
Model is divided into layers, which are adhered to the machine and laser cut out, the layer is moved out the way. then the next layer is moved onto and then repeats.
Stereo lithography:
uses resin and a laser to create a model, plate pulled up, uv laser cures the layer in the shape and repeats this to create the model.
Laser Sintering
High power laser fuses small particles of plastic, metal, ceramic or glass into an object.
What requirements must manufactures meet?
Appearance, performance, availability, delivery, reliability, safety
how is quality controlled?
Checks made during manufacture, 1 in every 100/0 checked for quality, results are recorded, if unsatisfactory production is stopped some checks by humans some by machines
Zero Defects
need for constancy is important for a companies reputation and to minimise rejects and repairs. This is done by use of CAM, as well as gauges, jigs, measuring devices and templates
Quality Assurance (QA)
actions and procedures are set up to make checks before after and during the production, the aim is to minimise rejects and defects.
