The task has been set to make a hole punch (used to punch holes in thin strips of aluminium) suitable for a student in key stage 3.
Situation and Design Brief Situation: At Exmouth Community College, Design Technology is a compulsory lesson for students in key stage 3 (years 7, 8 and 9). During the course the students will need to be able to punch holes in a variety of materials in order to join different components together - a hole punch is required to carry out this task. The task has been set to make a hole punch (used to punch holes in thin strips of aluminium) suitable for a student in key stage 3. The only constraints are the limited resources and tools within school (unless accessible out of school) and the 40 hour practical construction time limit. As there are no other requirements of the hole-punch, the task is very open-ended; relevant research must be carried out in order to ensure every aspect of the hole-punch meets and exceeds the specified requirements. Design Brief: I will design and make a hand operated hole punch (used to punch holes in aluminium) that will be suitable for key stage 3 students to enable them to make their own 'bolt-together' modelling kit. However, firstly, I will be carrying out research into the design and production of hole punches, a specification will then be written and I shall produce a variety of possible designs and finally develop one idea which will then be constructed. Intended Users When making my hole punch many different people need to be
Materials & Processes.
Materials & Processes Materials Metals There are two groups which metals fall in; these are Ferrous and Non Ferrous. Non ferrous metals are metals that don't have a compound of iron in them Below is a table of Non ferrous metals. It includes details like their color, melting point, properties, uses and availability. Colour Melting point Properties Uses Availability Aluminium alloy Silver white 700ºC Soft, weak, light, ductile, easy to pour, cast and machine, conducts heat and electricity easily; easy to work by hand Boats, aircraft, engine components, saucepans, foil for packaging, drinks cans, window frames pure aluminium comes in sheet, bar, rod, angle, tube Copper Reddish pink / brown 100ºC Very malleable, ductile, tough; good conductor; dense; easy to work Electrical cables and conductors, water pipes Bar, rod, sheet, tube, ingot Brass Yellow 980ºC Resists corrosion, dense, fairly hard, strong, malleable, good conductor, casts well, easy to machine Locks, taps, castings, forgings, decorative metalwork Bar, rod, sheet, tube, ingot, angle Silver Silver 960ºC Soft, weak, dense, very malleable, high conductivity; easy to work by hand; very expensive Jewellery, specialist electrical wiring Wire, sheet, ingot This table below is of ferrous metals. It also includes the same properties Colour m.p. Properties Uses Availability Mild
We have been asked to redesign the conveyor belt system on a Cold Milling Machine (CMM) by PaviNgZ Inc.
Introduction We have been asked to redesign the conveyor belt system on a Cold Milling Machine (CMM) by PaviNgZ Inc. This is because PaviNgZ are extending their range of CMM by making one with an extended conveyor belt. We are to outline the details of the extended belt, the power transmission and the requirements. The conveyor has to - Transport material 2m high - Transport material 6m across - Material will enter at 30-120 ton/hr - Belt speed can't exceed 2m/s - Conveyor system has to be built around the frame provided - Only minor modifications can be made to the frame - These alterations have to be made from standard steel sections of the same grade - Shafts to be manufactured from carbon steel - Conveyor has to last for 5 years, running 200 days a year and at an average of 4 hours per day. This comes to 4000 hours - The belt must be powered by a 3 phase AC motor - The design must consider its operating environment - The design must be safe - The belt must have a take up of 100mm - The max angle of surcharge of material is 25 degrees - The average density of material is 800kg/m^3 - The design must be practical and efficient Our approach to this project - Compile a list of specifications - Calculate the tensions in the belt based on idler spacing and belt velocity that we specify - Select power transmission components that will deliver the required
A new branch of a major Chinese take away, Wok In, is opening in a local high street. You have been asked to develop design ideas for a range of fast food packaging to be used in the take away.
GCSE Graphics Coursework A new branch of a major Chinese take away, Wok In, is opening in a local high street. You have been asked to develop design ideas for a range of fast food packaging to be used in the take away. The packaging should be suitable for the food, which it shall contain. You will also need to design the surface graphics for the packaging, but costs should be kept in mind. This must include the name of the take away and all other necessary information about the products contained in the package. An outline of the printing and package production processes will also be needed, together with the cost implication for the potential lengths of production run. Aspects such as costs, materials and quality of the packaging should be taken into account. You have also been asked to produce a menu, a bag to carry the food away in and a wrapper for a pair of chopsticks, to go alongside the food packaging. All of these should display a version of the logo and the name of the take away, which you will also need to design. Information about the printing and packaging processes and the costs involved should be given along with appropriate safety and environmental issues. Branch- A local division of a large business Major- Important, large, serious, significant Take away- Food sold for consumption away from the premises Range- Variation Fast food- Food, such as
Investigating The Effectiveness of a Home - Insulation Method.
Jill Heyes. 10H. Tuesday 11th December. 2001. Investigating The Effectiveness of a Home Insulation Method. Plan We are going to investigate the effectiveness of a home insulation method. Loft insulation. Double glazing. Cavity wall insulation Draught proofing. We have chosen to investigate the effectiveness of Loft insulation. Home heating costs money, not just to buy the heaters, but also to pay for the fuel that has been used. The amount of fuel we use as a nation each year to keep warm is equivalent to 30million tones of coal. Better insulation in our homes cuts down on fuel bills and could reduce the need for more power stations. Loft insulation is very cost effective. A home without loft insulation loses heat through the roof almost as quickly as if there wasn't a roof at all. There are various materials for loft insulation which all work on the principle that the best insulator is a layer of still air trapped just above the upper floor ceilings. Glass-fibre, mineral wool, expanded polystyrene, vermiculite and cork are all suitable. Loft insulating materials containing a high proportion of air trapped in little solid matter. Aluminium foil is also used for insulation. Loft insulation material is available in rolls or sheets or as granules for pouring between joists.
Properties of Teflon and Tefzel.
Properties Tefzel Tefzel is used in underfloor heating to protect the heating compound. Mostly used for undercarpet heating because more pressure is applied on to it. Tefzel is a fluoropolymer which are part of the fluorine-based products that include Teflon(PTFE), Teflon(FEP) and Teflon PFA fluoropolymer resins. Tefzel can be described as a ragged thermoplastic with an outstanding balance of properties. Mechanically, it is tough, has a medium stiffness and is impact and abrasion resistance. The Tefzel used in under floor heating has a higher tensile strength, stiffness , and creep resistance than other unfilled grades. Tefzel is typically considered to have a no load continuous use temperature of 150C. In certain specific applications, Tefzel can have an upper service temperature in excess of 230 C. Tefzel is weather resistance making it safe to be used in under carpet heating to insulate the heating compound. Tefzel is also inert to most solvents and chemicals and is hydrolytically stable. It has has substantially better resistance to radiation than Teflon but is not immune to damage by long-term exposure to gamma radiation, especially at elevated temperatures. Electrically, Tefzel is an excellent low-loss dielectric, with a uniformity of electrical properties not normally found with other thermoplastics. Tefzel can perform successful in applications where other
Product & Design
Candidate Name: Christopher-John Hammond Candidate Number: Centre Number: 12204 Ashmole School Design Brief Situation It has been noticed that the number of teenagers have problems with space lately. The designers from companies have offered opportunities for the target 14-16 year olds to come up with their own ideas. This may make a profitable product. Analysis (Problem) Most often teenage boy's rooms are disorderly, and this may be due to lack of space or incompatible storage. For example there is no storage for game consoles, iPods, PSPs and many more. Regularly there is storage for CD's and DVD's, but in some cases their rooms become cluttered and untidy due to wires all over the place because of lack of storage for game consoles and so on. Also things such as DVD players also become space consuming. Especially with teenagers becoming more demanding for more products, that requires space. Also too many objects such as DVD players game consoles are confined within each other, therefore creating wires clutter, which is firstly dangerous and secondly unattractive. Solution I'm aim to design a storage unit for teenage boys. I believe this is the solution because there is such a demanding market for game console, TV's and many more screen based media, and so this design will generate sales. This product should mainly appeal 14-19 year old males. Its main
Materials - Metals.
Brendan King Materials Metals Metals tend to be hard and are usually quite strong. Metals are often used in sports equipment that needs to maintain its form and may come under a certain amount of impact or stress, for example the goal posts in rugby and football are made of metal bases, as are sprinters starting blocks. Ceramics Ceramic materials are usually quite brittle. They are not very often used in sports but can be found in the form of clay in sports such as clay pigeon shooting which requires the clay to explode when shot to indicate a `hit`. Polymers Polymers are usually found in sports in the form of rubber and plastic, these materials have a good degree of flexibility as well as a `memory` - the ability to withstand stress or impact and return to its original size or shape. Rubbers form the grip on many pieces of sporting equipment such as tennis rackets and weights, while plastics are found on equipment that requires lightweight flexibility such as studded boots where plastic in the form of PU provides the undersole material Composites Composites are a mix of two or more materials that provide different properties depending on which raw materials are used. For example one of the most commonly used in fibreglass which is of benefit as it combines the properties of strength and flexibility required. Fibreglass in found in many pieces of track and field
Plastic - A Boon or A Bane
Plastic - A Boon or A Bane Extensions of knowledge do not always enlarge our capacity for control. This holds true for our relation to nature, some of whose phenomena are alterable by man while others are not. Despite all increase in our information about heavenly phenomena, some lie entirely beyond human influence. For instance a geologist studies the nature of the earthquakes but he cannot cause or prevent this occurrence. In some cases, we are ourselves the determinants of nature, since the use we make of natural forces produces the result we have caused. One such recent matter is the use of plastic. The term "plastics" covers a range of synthetic or semi-synthetic organic condensation or polymerization products that can be molded or extruded into objects or films or fibers. They consist of long chains of polymers. Their name is derived from the fact that in their semi-liquid state they are malleable, or have the property of plasticity. Plastics vary immensely in heat tolerance, hardness, and resiliency. Combined with this adaptability, the general uniformity of composition and lightness of plastics ensures their use in almost all industrial applications today Today plastics have replaced metals, natural fibres and hides, paper wood and stone and glass ceramics. Manufacturers use these plastics to make their products stronger, lighter, inexpensive and durable. Plastics'
