Planning the Making and the manufacturing for the Future (in Quantity).

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Planning the Making and the manufacturing for the Future (in Quantity)

  This page consists of information and decisions that I would make if I was going to mass produce my product. I have thought about methods that can be used, Quality of the product (for example tolerance), cost and many other aspects.


    I made my case using vacuum forming. I have looked into other ways I could use to produce many cases that are the same. The main method I found that is worth considering is injection moulding. Injection moulding is a manufacturing process where heated plastic is forced into a mould cavity under pressure. A mould cavity is essentially a negative of the part being produced. The cavity is filled with plastic, and the plastic changes phase to a solid, resulting in a positive. The machines then use high pressure to mould the plastic, Because of the high pressures involved, the mould must be clamped shut during injection and cooling. The two main plastics used are thermoset which cannot be resoftened after being subjected to heat and pressures; and thermoplastic, which can be repeatedly softened and reshaped by heat and pressure. Both of these materials are fairly cheap and therefore will cut down on production costs. Also in vacuum forming plastic is wasted that was surrounding the case in the forming process this is then cut off to leave you with your case; this wastage is none existent in the injection moulding. The Plastics are not only very durable with their increased life-span but also easily recyclable. Most plastics can be reclaimed by regrinding up old products and using the pellets to make a new product which obviously means no waste. In fact, plastics generally exhibit superior resistance to breakage and denting and are usable over and over again before recycling. The other main reason is speed, the injection moulding machine works continuously producing exactly the same thing every time but the vacuum forming machine takes longer to setup (plus it has to be set up manually) and therefore will take longer to produce the amount of cases required. I don’t have the equipment required for this job and would have to buy the cases in bulk from another company.

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     For the base of my case I Would use C.A.D C.A.M as an alternative to making it by hand. I could use a program such as Pro desk top to design the base to the correct size and select where the holes need to go for the circuit board. Then I could transfer the data over to a Computer added milling machine and replicate the design over and over again on one large sheet of Perspex. This would be extremely fast and I would be capable of carrying out the process. Another method would be making a Jig ...

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