Upload
grant-foster
View
220
Download
3
Embed Size (px)
Citation preview
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
MMAN 1130 DESIGN AND MANUFACTURE
CONCEPT GENERATION AND SKETCHING
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Product Development Process
MANUFACTURE
Distribution
Use & Service
Disposal, Reuse, Recycling
Product
MANUFACURING OPERATIONS
MANUFACTURING ORGANISATION
External Feedback (Performance, DFE, etc.
Internal Feedback (Cost, DFM, DFA, etc.
MMAN1130 Project
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
School of Mechanical & Manufacturing Engineering
The University of New South Wales
SOLO Pump Project
Functional Specificatio
n
Concept Sketch
Engineering Drawings
Production Plan
Prototype Manufacturi
ng
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Functional Specificati
on
Categorisation of
Functional Specification
Market Search
Initial Concept Sketch
Concept Sketch
Evaluation
Final Concept Sketch
Problem Formulation
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
…..the best way to get an idea is to get a lot of ideas…….
Linus Pauling
(1901 – 1994)
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
An outline of possible solution based on Product Design/Functional Specification (PDS) Splits the problem up into smaller
categories Two stages:
Concept generation (individual work) Concept evaluation (group work)
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Concept Generation Research into the similar products in
the market place Develop ideas which will meet PDS Key points in order to communicate
ideas
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
PDS Evaluation Matrix List of important features required
from a product Appearance , Competition, Customer,
Documentation, Ergonomics, Environment, Installation, Product disposal, Lead times, Legal and safety implications, Legislation, Patents and copyright, Maintenance, Materials Packaging and transport , Performance Processes, Product cost, Product dimensions, Product life, Quality, Quantity, Standards, Testing
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
PDS Evaluation MatrixFeature
Categories
Product Features
Concept 1 Concept 2 Concept 3
Performance
Lower a load of 2.5 tonnesDraw in a cable at a rate of 0.25 m/s
Dimensions
Envelop dimensions (H, W)
Cost End user cost < $5000Manufacturing cost < $2500
Standards AS5000 part 99 Motor performanceAS6105 for insulation
Product Life
On the market for 10 yearsSpare parts for further 5 years
•Which ones are important for representing PDS???????
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Use a suitable Concept Sketching Techniques Is 2D sketch enough ? Do you need 3D sketch? Do you need auxiliary views?
e.g. sectional views
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Use a suitable Concept Sketching Techniques Oblique
Crudest and rarely used Look very unconvincing to the eye
Easy to learn Not really a '3D' system but a 2 dimensional view of an object with 'forced depth‘ Drawn in two dimensions, i.e. flat. The other sides are drawn in at 45 degrees but instead of drawing the sides full size they are only drawn with half the depth creating 'forced depth' adding an element of realism to the object.
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Use a suitable Concept Sketching Techniques Isometric
constructing a 3 dimensional object without using perspective all lengths drawn at 30 degrees using their true length
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Use a suitable Concept Sketching Techniques Axonometric
Interior designer, landscapers Drawing a plan view with a third dimension Plan view at a 45 degree angle with the depth added vertically
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Generation and Sketching
Use a suitable Concept Sketching Techniques Perspective
Three main system One, Two and Three point
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Putting things together
Functional Specificati
on
Categorisation of
Functional Specification
Market Search
Initial Concept Sketch
Concept Sketch
Evaluation
Final Concept Sketch
Problem Formulation
Detail Design
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Putting things together: Bicycle Case
Problem Statement: Designing an off-road bike for semi-professional market for pleasure and racing use
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Putting things together: Bicycle Case
PDS / Functional Specification Dimensions
Envelop dimensions of 1.5mX1m Environment
Mainly used as an off-road bike Performance
Adjustable frame to suit for different market segments Should be less than 10kg Capable of carrying up to 100kg
Cost End user cost less than $1000 Manufacturing cost less than $500
Maintenance To be maintenance free except for light lubrication once a month and a recommended service every two years. Parts requiring lubrication should be accessible within 15 minutes without the use of special tools or equipment. All fasteners used should comply with AS6105. Spares should be available for 5 years after the product is replaced with a new model. No special tools should be required for maintenance.
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Putting things together: Bicycle Case
Research into other products in the market
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Putting things together: Bicycle Case
PDS evaluation MatrixFeature
CategoriesProduct Features
Concept 1 Concept 2
Performance Should be < 10kgCarrying up to 100kgAdjustable frame
Dimensions Envelop dimensions 1.5x1m
Cost End user cost < $1000Manufacturing cost < $500
Environment Off-road as a dirt bike
Maintenance Maintenance free except for light lubrication once a month and a recommended service every two years.Parts requiring lubrication should be accessible within 1 min without the use of special tools or equipment.All fasteners used should comply with AS6105.No special tools should be
required for maintenance.
MMAN1130 – Design and Manufacture by S. Kara
School of Mechanical & Manufacturing Engineering
The University of New South Wales
Concept Sketch Submission Due Week 3, in Monday class
Check Moodle Sketch Guide Concept sketch assessment guides