Transcript Slide 1
MATERIALS RAW MATERIAL COSTS, TREATING COSTS, HOW MANY COMPONENT PARTS CAN BE MADE? MANUFACTURING CUTTING TO SIZE, CLEANING, SHAPING, ASSEMBLY, FINISHING, RUNNING COSTS. SALES RECOVERING MAKING COSTS, MAKING A PROFIT, REPLACING PARTS ETC. HOW MANY STOOLS CAN BE MADE FROM ONE LENGTH OF MATERIAL?? THE LIFE EXPECTANCY OF A PRODUCT OR MATERIAL THE ABILITY TO WITHSTAND WEAR AND TEAR, WEATHERING AND DETERIORATION THROUGH CORROSION PREVENTING CHANGES IN APPEARANCE AND STRENGTH. CAN THE MATERIALS BE REPLACED? WHAT IS THE ‘TURNAROUND’ TIME????? WHAT EFFECT ON THE ENVIRONMENT – FEWER TREES, FEWER NATURAL RESOURCES. DAMAGE TO OZONE LAYER THROUGH SPRAY FINISHES ????? CAN EVERYONE AFFORD THE LUXURY – IS THERE AN ALTERNATIVE. ARE STANDARDS OF LIVING MORE IMPORTANT THAN LIFE ITSELF????????? WHICH ONE ?????? A MILD STEEL JIG WILL HELP KEEP ALL PARTS IDENTICAL. SIZE, SHAPE AND HOLES POSITION A DEVICE THAT ENSURES REPEAT ACCURACY OF COMPONENT PARTS. IT IS AS UNIQUE AS THE PRODUCT OR PART ITSELF. ALL SECTIONS ARE IDENTICAL IN SHAPE, SIZE AND HOLE POSITIONS. LOCATING TABS JIG OR FORMER A more durable material Increases life expectancy. Improved accuracy. Batch producing facility Quality control check TUBULAR MILD STEEL FRAME SHAPED AROUND JIG TO MAINTAIN REPEAT ACCURACY BUT HOW CAN IT BE IMPROVED ??? HOLDING SECURELY!! GRIPPED SECURELY USING MECHANICAL SCREW THREAD ALTHOUGH DESIGNED TO DIFFERENT JOBS, ALL MECHANISMS HAVE 5 THINGS IN COMMON. 1. EASY GRIP 2. MOVING JAWS 1. THEY MAKE A JOB EASIER TO DO. 3. TURNING FORCE 2. THEY INVOLVE SOME KIND OF MOVEMENT. 4. TWISTING HANDLE 3. THEY INVOLVE SOME KIND OF FORCE. 5. ROTARY TO LINEAR 4. THEY NEED SOME KIND OF INPUT. 5. THEY PRODUCE SOME KIND OF OUTPUT. FOLLOWS THE MOVEMENT OF THE CAM – CHANGES ROTARY MOTION TO LINEAR OR RECIPROCATING MOTION THE CAM - TAKES IT NAME FROM IT’S SHAPE E.G. PEAR CAM CRANK ROTATES – ANY DIRECTION – TURNED USING A HANDLE TABLE MOVES UP AND DOWN – WITH A RECIPROCATING MOTION PROBLEM = THE TASK IN HAND WHAT WOULD YOU DO DIFFERENTLY – WHAT ARE THE NEW PROBLEMS? ANALYSIS = INVESTIGATE WHAT NEEDS TO BE DONE PROBLEM ANALYSIS EVALUATING RECORD ANY CHANGES YOU MAKE BRIEF = WHAT YOU WILL DO BRIEF MODIFYING PROTOTYPE OF THE IDEA MAKING THE DESIGN WHEEL RESEARCH = YOUR FINDINGS RESEARCH SPECIFICATION DEVELOPMENT ALL THE STEPS NEEDED TO MAKE YOUR CHOSEN IDEA TOOLS AND EQUIPMENT ETC. DESIGN IDEAS CHOSEN IDEA THE BEST IDEA TO DEVELOP FURTHER SKETCHES OF POSSIBLE SOLUTIONS TO THE PROBLEM SPECIFICATION = WHAT THE PRODUCT MUST BE AND WHAT IT MUST DO. IMPORTANT REMEMBER THE EXAM IS 2 HOURS LONG GET PLENTY OF SLEEP THE NIGHT BEFORE YOU’LL FEEL ON TOP OF THE WORLD HAVE SOMETHING TO EAT KEEP BODY AND SOUL TOGETHER TO ALLOW THE MIND TO FUNCTION CORRECTLY MAKE SURE YOU GO TO THE TOILET BEFORE THE EXAM YOU CAN’T ANSWER CALLS OF NATURE ONCE THE EXAM HAS STARTED Practice drawing using Isometric grids. 1. Start with a basic regular shape 2. Make the shape softer or rounder 3. Expand the product to include Consider – Dimensions, boxes in different positions 4. Label 5 points of Annotation and 5 hidden detail, construction lines, view points. points of evaluation. Sizes, colour, processes, materials, properties, functions etc. 5. Try producing an Orthographic drawing of your final solution 1. SCAN READ THE WHOLE PAPER BEFORE YOU ANSWER ANY QUESTIONS – THIS WILL GIVE YOU THE CONTEXT OF THE PAPER. 2. USE A HIGHLIGHTER PEN TO IDENTIFY KEY POINTS OF THE QUESTION. 3. READ 2 QUESTIONS AHEAD BEFORE ANSWERING – THIS WILL HELP AVOID REPEATING PREVIOUS ANSWERS AND SAVE TIME. 4. LOOK OUT FOR QUESTIONS WITHIN QUESTIONS – I.E. WHERE MORE THAN ONE ANSWER IS ASKED FOR 5. NEVER LEAVE BLANK SPACES – MARKS ARE ALWAYS AWARDED FOR ATTEMPTED QUESTIONS – YOU MIGHT GUESS CORRECTLY!! 6. TAKE TIME BEFORE THE END TO PROOF READ YOUR ANSWERS – IF IT DOES NOT MAKE SENSE TO YOU – IT WON’T TO THE MARKER 7. ABOVE ALL - DON’T PANIC. IF YOU’RE STUCK, MOVE ON TO THE NEXT QUESTION – YOU CAN ALWAYS GO BACK LATER. REVISION WEBSITES • http://www.btinternet.com/~hognosesam/elpinan ds/mainmenu.htm • Google images of Picnic furniture & mechasnisms. • BBC-GCSE BITESIZE. • LEARN.CO.UK • REVISION-NOTES.CO.UK • TOPMARKS • SAM LEARNING • www.the-warren.org • www.technologystudent.com More useful websites Folding furniture. www.foldtable.co.uk www.gardenvisit.com/garden_products/furniture_outdoor/plastic_furniture2 - 14k - (choose folding chair from 1st options, gives a good description of chair mechanism and materials) http://www.isisconcepts.co.uk/educational_solutions/seats/flip-it_folding_chair.html http://www.jacksons-camping.co.uk/folding/chair.htm (canvas folding chairs) Mechanisms www.flying-pig.co.uk/mechanisms/index.html - 9k - Cached - Similar pages (animated examples of movements and mechanisms) www.dtonline.org/apps/menu/app?2&6&0 - 2k - www.technologystudent.com/cams/camdex.htm - 14k - Even more useful websites Ergonomics. www.ergonomics4schools.com/ - 11k – (click on ‘seating’ on the top picture) Anthropometric. http://www.lanfrancdt.co.uk/websiteprintablepdfs/ergonomics.pdf (there is a quiz also which students can do after reading) www.ergonomics4schools.com/lzone/anthropometry.htm - 36k - Materials. www.bbc.co.uk/schools/gcsebitesize/design/resistantmaterials/index.shtml - 32k - General sites AQA site about the prep sheet- assuming they update it come March www.design-technology.org/introduction2.htm - 5k www.design-technology.info/page10.htm - 16k www.designandtech.com/ - 38k (not all of the site can be accessed but the sections which can be are very good- interactive quiz)