Session:「Fabrication and DIY」

Cardboard Machine Kit: Modules for the Rapid Prototyping of Rapid Prototyping Machines

論文URL: http://dl.acm.org/citation.cfm?doid=3025453.3025491

論文アブストラクト: Digital fabrication machines (such as laser cutters or 3D printers) can be instructed to produce any part geometry within their application space. However, machines' application spaces are not easily modified or extended. How can we enable the production of application-specific computer-controlled machines by machine building novices? How can we facilitate rapid prototyping of rapid prototyping tools? We propose a novel set of modules, the Cardboard Machine Kit, for the construction of digital fabrication machines. These open-source modules are implemented using cardboard frames, stepper motors, and networked electronics controlled through a Python library. We evaluated the kit both through machine building workshops and by studying the usage of the kit in the wild. In the wild we observed more than 500 novice machine builders who built 125 different machines for 15 different application types. We argue that this breadth demonstrates the efficacy of this modular approach. Finally we discuss the limitations of the Cardboard Machine Kit and discuss how it could inform future machine building infrastructure.

日本語のまとめ:

ラピッドプロトタイピングツール(工作機械)をラピッドプロトタイピングするための手法とそのモジュールセットの提案。筐体はレーザカット、動きはステップモータで生成。ワークショップの実施により評価。

Printflatables: Printing Human-Scale, Functional and Dynamic Inflatable Objects

論文URL: http://dl.acm.org/citation.cfm?doid=3025453.3025898

論文アブストラクト: Printflatables is a design and fabrication system for human-scale, functional and dynamic inflatable objects. We use inextensible thermoplastic fabric as the raw material with the key principle of introducing folds and thermal sealing. Upon inflation, the sealed object takes the expected three dimensional shape. The workflow begins with the user specifying an intended 3D model which is decomposed to two dimensional fabrication geometry. This forms the input for a numerically controlled thermal contact iron that seals layers of thermoplastic fabric. In this paper, we discuss the system design in detail, the pneumatic primitives that this technique enables and merits of being able to make large, functional and dynamic pneumatic artifacts. We demonstrate the design output through multiple objects which could motivate fabrication of inflatable media and pressure-based interfaces.

日本語のまとめ:

袋状の布を空気で膨張させて3次元形状を形成する手法の提案。2層の布を縫い合わせる際に山(しわの寄り)をつくることで膨張時の角度を形成する。ソファ、腕や指の外骨格、サッカーゴールなどの作例を紹介。

Sketching CuddleBits: Coupled Prototyping of Body and Behaviour for an Affective Robot Pet

論文URL: http://dl.acm.org/citation.cfm?doid=3025453.3025774

論文アブストラクト: Social robots that physically display emotion invite natural communication with their human interlocutors, enabling applications like robot-assisted therapy where a complex robot's breathing influences human emotional and physiological state. Using DIY fabrication and assembly, we explore how simple 1-DOF robots can express affect with economy and user customizability, leveraging open-source designs.We developed low-cost techniques for coupled iteration of a simple robot's body and behaviour, and evaluated its potential to display emotion. Through two user studies, we (1) validated these CuddleBits' ability to express emotions (N=20); (2) sourced a corpus of 72 robot emotion behaviours from participants (N=10); and (3) analyzed it to link underlying parameters to emotional perception (N=14).We found that CuddleBits can express arousal (activation), and to a lesser degree valence (pleasantness). We also show how a sketch-refine paradigm combined with DIY fabrication and novel input methods enable parametric design of physical emotion display, and discuss how mastering this parsimonious case can give insight into layering simple behaviours in more complex robots.

日本語のまとめ:

1-DOF(1自由度)ロボットが感情を表現する手法の提案と、5つの仮説・予測に対して人間が受ける印象の評価実験の報告。sketch-and-refineという手法で開発を進行。

WireDraw: 3D Wire Sculpturing Guided with Mixed Reality

論文URL: http://dl.acm.org/citation.cfm?doid=3025453.3025792

論文アブストラクト: The availability of commodity 3D extruder pen allows direct drawing of 3D wire sculptures for novice users, enabling many novel applications such as intuitive spatial intelligence development for school students. However, the lack of spatial and structural cues among individual pen strokes makes the 3D drawing process challenging, which often leads to highly distorted and even incomplete wire sculptures. We present a mixed reality system, called `WireDraw', to immersively guide the 3D drawing for easy wire sculpturing. The system design is based on novel 3D drawing principles and the subsequent optimization, making the stroke sequence of the wire model drawable and easy to draw. On-the-fly edits on unsatisfactory strokes are also allowed for creative design. We demonstrate the effectiveness of our system by testing on a variety of wire models and a user study. The results show that the visual guidance provided by our system is extremely helpful for drawing high-quality wire sculptures.

日本語のまとめ:

Mixed Realityを用いたガイド表示によって3Dペンでの造形を支援する手法の提案。Oculus RiftとWebカメラとARToolKitにより提案システムを実装し、評価実験により効果を実証。