COSTS

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COSTS
MANUFACTURING CUTTING TO SIZE, CLEANING, SHAPING,
ASSEMBLY, FINISHING, RUNNING COSTS.
SALES RECOVERING MAKING COSTS, MAKING A PROFIT,
REPLACING PARTS ETC.
MATERIALS RAW MATERIAL COSTS, TREATING COSTS, HOW
MANY COMPONENT PARTS CAN BE MADE?
HOW MANY STOOLS CAN BE MADE FROM ONE LENGTH OF
MATERIAL??
DURABILITY
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.
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SOCIAL CONSIDERATIONS
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 ?????
WHICH ONE ??????
CAN EVERYONE AFFORD THE LUXURY IS THERE AN
ALTERNATIVE. ARE STANDARDS OF LIVING MORE
IMPORTANT THAN LIFE ITSELF?????????
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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.
JIGS AND FIXTURES
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
GRIPPED SECURELY USING MECHANICAL SCREW THREAD
BUT HOW CAN IT BE IMPROVED ???
HOLDING SECURELY!!
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BASIC MECHANISMS

• ALTHOUGH DESIGNED TO DIFFERENT JOBS, ALL
  MECHANISMS HAVE 5 THINGS IN COMMON.
• THEY MAKE A JOB EASIER TO DO.
• THEY INVOLVE SOME KIND OF MOVEMENT.
• THEY INVOLVE SOME KIND OF FORCE.
• THEY NEED SOME KIND OF INPUT.
• THEY PRODUCE SOME KIND OF OUTPUT.

1. EASY GRIP
2. MOVING JAWS
3. TURNING FORCE
4. TWISTING HANDLE
5. ROTARY TO LINEAR

RACK PINION
CAMS AND FOLLOWERS
CRANK ROTATES ANY DIRECTION TURNED USING A
HANDLE
FOLLOWS THE MOVEMENT OF THE CAM CHANGES ROTARY
MOTION TO LINEAR OR RECIPROCATING MOTION
TABLE MOVES UP AND DOWN WITH A RECIPROCATING
MOTION
THE CAM - TAKES IT NAME FROM ITS SHAPE E.G.
PEAR CAM
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PROBLEM THE TASK IN HAND
THE DESIGN PROCESS
WHAT WOULD YOU DO DIFFERENTLY WHAT ARE THE NEW
PROBLEMS?
ANALYSIS INVESTIGATE WHAT NEEDS TO BE DONE
PROBLEM
ANALYSIS
EVALUATING
BRIEF WHAT YOU WILL DO
RECORD ANY CHANGES YOU MAKE
BRIEF
THE DESIGN WHEEL
MODIFYING
RESEARCH YOUR FINDINGS
RESEARCH
PROTOTYPE OF THE IDEA
MAKING
SPECIFICATION
SPECIFICATION WHAT THE PRODUCT MUST BE AND WHAT
IT MUST DO.
DEVELOPMENT
DESIGN IDEAS
ALL THE STEPS NEEDED TO MAKE YOUR CHOSEN
IDEA TOOLS AND EQUIPMENT ETC.
CHOSEN IDEA
SKETCHES OF POSSIBLE SOLUTIONS TO THE PROBLEM
THE BEST IDEA TO DEVELOP FURTHER
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EXAM TECHNIQUE
IMPORTANT REMEMBER THE EXAM IS 2 HOURS LONG
GET PLENTY OF SLEEP THE NIGHT BEFORE
YOULL FEEL ON TOP OF THE WORLD
HAVE SOMETHING TO EAT
KEEP BODY AND SOUL TOGETHER TO ALLOW THE MIND TO
FUNCTION CORRECTLY
YOU CANT ANSWER CALLS OF NATURE ONCE THE EXAM
HAS STARTED
MAKE SURE YOU GO TO THE TOILET BEFORE THE EXAM
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EXAM TECHNIQUE
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 boxes in
different positions
Consider Dimensions, hidden detail,
construction lines, view points.
4. Label 5 points of Annotation and 5 points of
evaluation. Sizes, colour, processes, materials,
properties, functions etc.
5. Try producing an Orthographic drawing of your
final solution
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EXAM TECHNIQUE
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
WONT TO THE MARKER
7. ABOVE ALL - DONT PANIC. IF YOURE STUCK,
MOVE ON TO THE NEXT QUESTION YOU CAN ALWAYS GO
BACK LATER.
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REVISION WEBSITES

• http//www.btinternet.com/hognosesam/elpinands/ma
  inmenu.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

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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/education
al_solutions/seats/flip-it_folding_chair.html http
//www.jacksons-camping.co.uk/folding/chair.htm (c
anvas 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?260 - 2k -
www.technologystudent.com/cams/camdex.htm - 14k -
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Even more useful websites
Ergonomics.
www.ergonomics4schools.com/ - 11k (click on seating on the top picture)
Anthropometric. http//www.lanfrancdt.co.uk/websit
eprintablepdfs/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/desi
gn/resistantmaterials/index.shtml - 32k - General
sites AQA site about the prep sheet- assuming
they update it come March www.design-technology.or
g/introduction2.htm - 5k www.design-technology.inf
o/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)
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BEST OF LUCK WITH ALL YOUR EXAMS
TODAY IS THE FIRST DAY OF THE REST OF YOUR LIFE
MAKE IT COUNT