MFA Advanced Product DesignUmeå Institute of DesignAPD1 5ID101 Product Analysis & ConstructionFEBRUARY - MARCH 2014
PARAMETRIC MODELL INGProduc t ana l ys i s , So l i dWorks ,
rap id p ro to typ ing and work i ng p ro to types
Course b r i e f
Dra f t 140102
Solid modeling (or modelling) is a consistent set of principles for mathematical and computer modeling of three dimensional solids. Solid modeling is distinguished from related areas of Geometric modeling and Computer graphics by its emphasis on physical fidelity. Together, the principles of geometric and solid modeling form the foundation of Computer-aided design and in general support the creation, exchange, visualization, anima-tion, interrogation, and annotation of digital models of physical objects.
The use of solid modeling techniques allows for the automation of several difficult engineering calculations that are carried out as a part of the design process. Simulation, planning, and verifi-cation of processes such as machining and assembly were one of the main catalysts for the development of solid modeling. More recently, the range of supported manufacturing applica-tions has been greatly expanded to include sheet metal manu-facturing, injection molding, welding, pipe routing etc. Beyond traditional manufacturing, solid modeling techniques serve as the foundation for rapid prototyping,..
Wikipedia.org
BackgroundIt is becoming increasingly more important for industrial designers to be able to understand and communicate the technological aspects of the profession to other collaboration partners, especially due to the high degree of interaction with engi-neers. Many young industrial designers and design schools have been criticized by the profession in recent years because they lack a basic knowledge of materials and how products are constructed and produced. There are also many students that have no experience with parametric modelling. The alleviation of these problems is one of the main goals of this course.
Course content and goalsThe purpose of the course is to introduce the complexities of product development and construction and the introduction and application of the CAD program Solid-Works. As there is a great diversity in the individual student’s knowledge of this software, the course will be based on individual tutoring adapted to the student’s level of skill with solid modelling software.
As a part of the course we will be doing a product analysis exercise in which a given type of product will be disassembled, analysed in terms of function, materials and construction. Discussions will be carried out concerning how and why the project was designed for production as it is, and how it could be improved, both technically and functionally. After this exercise the product’s existing components should be drawn with the use of SolidWorks.
In the final phase of the project the product will be redesigned and produced by rapid prototyping and maybe even NC milling for the purpose of creating a full functional prototype of the new product using the original product’s components.
Bom view and specification of radio componentsPhilip Nordmand Andersen, APD 2010
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What is Parametric Modelling?Prior to the introduction of parametric modelling, most programs created engineer-ing models via 2D drawings, 3D wireframes or 3D surface models. In each case, full product descriptions, down to the proper dimensioning scheme and tolerances, were impossible. This changed with the introduction of parametric modelling. Engineers and designers need a great degree of flexibility from their computer-aided design (CAD) software. Designing a given component or machine is only the first step in the designer’s work schedule. It is important that he or she will be able to follow up by making quick and easy hypothetical modifications to the design.Parametric modelling allows the designer to make these changes with a fair amount of ease. With parametric modelling, the designer needs only to change a few basic parameters and the entire model will adjust accordingly. Rather than combing through each component piece by piece, one only needs to shift some basic overall formulas and the changes will be effected.The changes made with parametric modelling are made through some fairly weighty mathematical equations. The high processing power of today’s computers allows for an ease of computation that never existed before today. Engineers can very easily use their CAD programs to test hypothetical designs with a degree of freedom that would have been unavailable to earlier engineers.In a parametric model, each entity, such as a boolean primitive, a line or arc in a wireframe, or a filleting operation, has parameters associated with it. These pa-rameters control the various geometric properties of the entity, such as the length, width and height of a rectangular prism, or the radius of a fillet. They also control the locations of these entities within the model. These parameters can be changed by the operator as necessary to create the desired part. Parametric modellers that use a history-based method keep a record of how the model was built. When the operator changes parameters in the model and regener-ates the part, the program repeats the operations from the history, using the new parameters, to create the new solid. There are many uses for this type of modelling. Designers can test various sizes of parts to determine which is the “best” part for their use by simply adjusting the model parameters and regenerating the part.
This short and general explanation has been inspired by the following sources:http://alum.wpi.edu/~gregm/thesis/node11.htmlhttp://www2.ivcc.edu/perez/Parametric%20modeling.ht
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Work methodThis is a five-week course, and will consist of lectures, individual instruction, product design, model building of a working prototype and a presentation. Most of the work will be done individually in the Top PC lab or by your work tables on your own computers. The course will be run by Tomas Lindehell, and industrial designer Johan Gustafsson from the Umeå-based design consultancy Struktur Design AB. A more detailed description of the five weeks can be found on the last page. Some of the registration and analysis work will be carried out in teams, but the creative exercise and presentation will be individual work.
The course contains of the two following sections:
1) SolidWorks course (Approx. 2 weeks)The first week consist of a SolidWorks course based on differentiated tutoring with a number of small exercises. For experienced users, there will be the possibility of working with new methods and parametric modelling. During the first half of the fourth week you will get support when you should prepare your files for rapid pro-totyping. Tomas Lindehell will be teaching these courses.
2) Product analysis / Theme exercise (Approx. 3 weeks) This section is divided into three phases:
2.1: Phase one concerns product analysis where a number of products are disas-sembled and analysed. After this you will all be given your own product to work with. The different production methods and materials of this main product should be documented in the final presentation together with full-scale drawings of its various internal parts and components in SolidWorks - This can be done as a team.
2.2: Phase two will be carried out individually. Here you will be asked to create a new design based on the given product and the theme exercise. Your new design should be build in SolidWorks with the purpose of creating files for prototype production using Rapid Prototyping (RPT). Theme exercise: An electric screwdriver + TOOL BRAND X 2.3: Phase three involves the finishing of the model and assembling with the original product’s components in order to create a full-functioning prototype. This phase ends with a presentation and evaluation.
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Course approvalDuring this course you will be approved based on:• Your attendance in the mandatory classes and the completion of the specified tutorials in the SolidWorks course. • Your attendance and participation in the product analysis classes and tutoring • sessions. • The completion of your new design in SolidWorks.• The completion of a working prototype with RPTed parts.• The digital submission of a PDF of your presentation documenting your work process and the final result: //apd1_2013/04. Parametric modelling/Results/”your names” Cooperating lecturersTomas Lindehell will be responsible for the introduction to SolidWorks and the Advanced CAD and CAID course.E-mail: [email protected] information: www.uid.umu.se/en/for-our-students/cad-and-caid/ma-cad-(prod-analysis)/
Johan Gustafsson will be responsible for the product analysis at the same time as he will provide insights to the process of 3D modelling for production with case stories and practical examples and feedback on your initial designs. Johan is one of the founders of the Umeå-based design consultancy Struktur Design AB and an UID alumni from 1993.E-mail: [email protected]: www.strukturdesign.se
Rickard Åström will give an introduction to the Interaction Workshop in week 1o. He will also be available part-time during the last week if any technical support is needed during the assembling of your prototypes. E-mail: [email protected]
Robert Lange a German APD alumnus, presently working at Designit’s Munich office, will visit us Thursday and Friday the 6th - 7th of March. Besides introducing Designit, he will also give an insight to the way they work and define CMF (Colour/ Material/ Finish) for production as professional designers. Robert will also give you feedback on your screwdriver design and assist you in defining your own CMF description of your designs.E-mail: [email protected]: www.designit.com
-Have solid fun!Thomas, February 2014
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Exploded view of screwdriver componentsSimon Fredriksson, APD 2011
Suggested websites for general information:http://www.uid.umu.se/en/for-our-students/cad-and-caid/- The schools website with practical information about CAD/ CAID and rapid prototyping.
http://www.solidworks.com- The official website of SolidWorks. (Dassault Systèmes)
http://www.designinsite.dk- A website with examples and information about materials and manufacturing.
http://alum.wpi.edu/~gregm/thesis/node11.html- A website which partly inspired the short and general introduction on page 4.
Suggested websites for advanced CAID tutorials:(Recommended by previous APD students)
http://www.dimontegroup.com/Tutorials/SolidWorks_Tutorials.htm- DiMonte group gets to some advanced SolidWorks surfaces tools, which basically tutors designers on how to recreate what they do in Alias, but in SolidWorks (start tutorials from bottom up).
http://www.productdesignforums.com/index.php?showtopic=230- Shows how to surface model a mouse. You need to sign up for the website. (Maybe Tomas Lindehell has this downloaded?)
Week plan: Parametric Modelling 2014Remember to check the web schedule for changes.
Week 9
Monday24/02
Tuesday25/02
Wednesday 26/02
Thursday27/02
Friday28/02
08:30 - 10:00Green Holken• Theme exercise• Product analysis• Plastic tooling J. Gustafsson &Tomas Lindehell
09:00 - 16:00Top PC labSolidWorksTomas Lindehell
09:00 - 12:00Top PC labSolidWorksTomas Lindehell
09:00 - 16:00Top PC labSolidWorksTomas Lindehell
09:00 - 16:00Top PC labSolidWorksTomas Lindehell
10:30 - 12:0013:00 - 16:00Top PC labSolidWorksTomas Lindehell
Own work: “Brand Boards” for Tuesday (3h) + Brand DNA visalization (1h)
Week 10
Monday03/03
Tuesday04/03
Wednesday 05/03
Thursday 06/03
Friday07/03
Note: Tomas Lindehell will be away this week
09:00 - 12:00IxD workshopIntroduction - G1Rickard Åström
09:00 - 12:00Green roomBrand Boards + ideation feedbackJ. Gustafsson
09:00 - 12:00WorkshopSketch models in foam 1:1 (3h)J. Gustafsson
10:00 - 12:00Green PC HolkenIntroduction to Designit + CMFRobert Lange
09:00 - 16:00Freeze designs!
Own work: CMF exercise and feedback Robert Lange
Define CMFStart modelling!
G2 - Own work2D ideation in 1:1views (3h)
13:00-16:00 Own work: Preparing for sketch-modelling(3h)
13:00-16:00 Own work
13:00-17:00Own work: Feedback on 2D and foam ideation.
Final design 2D (4h)Robert Lange
13:00 - 16:00IxD workshopIntroduction - G2Rickard ÅströmG1 - Own work2D ideation in 1:1views (3h)
Week 11 Monday10/03
Tuesday11/03
Wednesday 12/03
Thursday 13/03
Friday14/03
09:00 - 16:00 (Wednesday 09:00 - 12:00) SolidWorks Modelling Tomas Lindehell is available for SolidWorks support all week!Own work Own work Own work Own work Own work
Week 12 Monday17/03
Tuesday18/03
Wednesday 19/03
Thursday 20/03
Friday21/03
09:00 - 16:00 (Wednesday 09:00 - 12:00)Tomas Lindehell is available for SolidWorks support
09:00 - 16:00Top PC lab Adv CAID, Tomas Lindehell
Own work: Preparing files for approval and rapid prototyping before Wednesday noon at the latest!
Own work: Renderings of final design
Week 13 Monday24/03
Tuesday25/03
Wednesday 26/03
Thursday 27/03
Friday28/03
Own work:Finishing workingprototype
Own work:Finishing workingprototype
Own work:Finishing workingprototype
Own work:Finishing workingprototype andpresentationRickard Åström booked for support
Own work:Prepare for pres.Rickard Åström booked for support13:00 - 16:00Green roomFinal critiqueJ.GustafssonT. Lindehell
Mandatory CAID classes
Own workMandatory tutoring, feedback, presentations
Portfolio reviews:Aisin, Denso and Daihatsu
