Modular Design for a Product Family of Aesthetic Medical Laser Devices
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Modular design for a product family of aesthetic medical laser devices MAXI SCHUBERT Master of Science Thesis Stockholm, Sweden 2016 Modular design for a product family of aesthetic medical laser devices Maxi Schubert Master of Science Thesis MMK 2017:195 IDE 258 KTH Integrated Product design Machine Design SE-100 44 STOCKHOLM Examensarbete MMK 2017:195 IDE 258 Modular design for a product family of aesthetic medical laser devices Maxi Schubert Godkänt Examinator Handledare 2017-10-24 Claes Tisell Claes Tisell Uppdragsgivare Kontaktperson Asclepion Laser Technologies Thomas Unger GmbH Sammanfattning Denna uppsats beskriver den produktutvecklingsprocess som genomförts i samarbete med “Asclepion Laser Technologies” i syfte att ta fram ett gemensamt formspråk för en produktfamilj av medicinska lasrar. Eftersom att dessa produkter varierar i storlek såväl som utvecklingsår fanns stora skillnader i deras respektive formspråk. Eftersom att formspråk och design är viktiga för varumärkets identitet så eftersträvade företaget att införa ett gemensamt formspråk för sina produkter. Examensarbetets syfte var sålunda att ta fram en design för nya kåpor. För att göra designen applicerbar över hela produktfamiljen så eftersträvades ett modulärt system. Genom att nyttja samma kåpor till flera produkter kan dessutom produktionskostnad, verktygskostnad och antal underleverantörer sänkas. Varmforming som preliminär tillverkningsmetod bidrar även det till en låg produktionskostnad. Arbetet omfattade hela produktutvecklingsprocessen i fyra steg, med förstudie, idégenerering, konceptutveckling och produktionsklart koncept. Användandet av metoder och verktyg för utvecklingsprocessen, såsom observationsstudier morfologisk idégenerering, beskrivs övergripande. I samarbete med en varmformningsspecialist levererades en produktionsklar CAD-modell. Efter att ha reviderats av ett kommersiellt designföretag har den framtagna designen satts i serieproduktion. Nyckelord: produktutveckling, modularisering, varmformning, produktfamilj, varumärkes-DNA I II Master of Science Thesis MMK 2017:195 IDE 258 Modular design for a product family of aesthetic medical laser devices Maxi Schubert Approved Examiner Supervisor 2017-10-24 Claes Tisell Claes Tisell Commissioner Contact person Asclepion Laser Technologies Thomas Unger GmbH Abstract This thesis covers a product development process carried out at the company “Asclepion Laser Technologies” for a product family of aesthetic medical laser devices. Due to different dimensions and dates of origin, an obvious divergence in the appearance of the present products within the product family had emerged in the company. Since the recognition value of a brand is greatly influenced by its product design the company aspired the development of a uniform design for the whole product family. For this purpose, the objective of this thesis was the development of a new housing design. A modular design was pursued, to make it applicable for different devices of the same product family. Building multiple devices from the same housing modules reduces the overall production costs by decreasing tooling costs and decreasing the diversity of parts from suppliers. With the use of thermoforming as the predetermined production method, the production costs are kept low in addition. During the master thesis project, the whole product development process was executed. The present thesis describes the development process in its four different phases, beginning with the pre-studies over ideation, concept development till the development of a final product ready for production. The implementation of suitable methods and tools in this design process, like observational studies and morphological idea generation, is outlined. In collaboration with a thermoform specialist a CAD-model, ready for production, was delivered. After a revision of the developed product design by a commercial design company the design has been immediately transferred into serial production. Keywords: product development, modularization, thermoforming, product family, brand DNA III IV ACKNOWLEDGEMENT This thesis was performed at “Asclepion Laser Technologies” in Jena, Germany. I would like to thank Asclepion, for the opportunity to do my Master’s Thesis and for all the support and expertise. Particularly I would like to thank my supervisor at Asclepion, Thomas Unger and the development manager Ingolf Streit for their guidance, support and education during my internship. Furthermore, I would like to thank my supervisor Claes Tisell at KTH for his tutoring and support in every way. Finally, I would like to thank Daniel Bitai from “BWF Thermoform” for the great collaboration and help in the matter of thermoforming. Maxi Schubert Jena, August 2016 V VI NOMENCLATURE Here are the Notations and Abbreviations that are used in this Master thesis. Notations Symbol Description A Area (cm²) d Sheet thickness (mm) L Length (cm) r Radius (mm) Tg Transition temperature (°C) Tm Melt temperature (°C) Abbreviations ABS Acrylonitrile Butadiene Styrene ADR Aerial Draw Ratio CAD Computer Aided Design CNC Computer Numeric Control DIN Deutsche Industrie Norm (German Industry Standard) HDPE High Density Polyethylene HIPS High Impact Polystryrol LDPE Low Density Polyethylene LDR Linear Draw Ratio LED Light-Emitting Diode PET Polyethylene Terephthalate PMMA Polymethyl Methacrylate PP Polypropylene PS Polystyrene PSI Pound per square inch (psi), unit of pressure or of stress PVC Polyvinyl Chloride RAL Colour matching system used in Europe SB Styrene Butadiene TPE Thermoplastic Elastomers VII VIII TABLE OF CONTENTS TABLE OF FIGURES ........................................................................................ XI TABLE OF TABLES ......................................................................................... XII 1 INTRODUCTION .............................................................................................. 1 1.1 Background .................................................................................................. 1 1.2 Purpose ......................................................................................................... 2 1.3 Delimitations ................................................................................................ 2 1.4 Methods ........................................................................................................ 3 2 FRAME OF REFERENCE ................................................................................ 5 2.1 Thermoforming ............................................................................................ 5 2.1.1 Process ................................................................................................ 5 2.1.2 Advantages & Disadvantages ............................................................ 7 2.1.3 Part Design ......................................................................................... 7 2.1.4 Tool Design ...................................................................................... 14 2.2 Laser in Dermatology ................................................................................ 16 2.2.1 Components of a Laser .................................................................... 17 2.2.2 Mechanisms Laser Treatment of Skin ............................................. 17 2.2.3 Laser Safety ...................................................................................... 18 2.3 EMC (Electromagnetic compatibility) ...................................................... 19 3 CONCEPT DEVELOPMENT ......................................................................... 21 3.1 Requirement Specifications ....................................................................... 21 3.2 Pre-Studies ................................................................................................. 21 3.2.1 Market Analysis ............................................................................... 22 3.2.2 Customer Survey .............................................................................. 25 3.2.3 Observational Study ......................................................................... 27 3.2.4 Development of Brand DNA ........................................................... 27 3.3 Ideation ...................................................................................................... 28 3.3.1 Brainstorming ................................................................................... 29 3.3.2 Morphological Idea Generation ....................................................... 30 3.3.3 Combination and Evaluation of Ideas .............................................. 31 3.4 Conceptual Phase ....................................................................................... 33 3.4.1 Concept Generation .......................................................................... 33 3.4.2 Modularisation ................................................................................. 35 3.4.3 Evaluation & Screening ................................................................... 36 IX 4 FINAL CONCEPT ........................................................................................... 37 4.1 Geometry .................................................................................................... 37 4.2 Product Identification ................................................................................ 37 4.3 Laser Safety ..............................................................................................