scholarly journals Open Source 3D-Printable Planetary Roller Screw for Food Processing Applications

Technologies ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 24
Author(s):  
Marcello C. Guadagno ◽  
Jacob M. Loss ◽  
Joshua M. Pearce
Keyword(s):  
Open Source ◽  
Food Processing ◽  
Computer Aided Design ◽  
Constant Load ◽  
Maximum Force ◽  
Hand Tools ◽  
Roller Screw ◽  
Processing Techniques ◽  
Aided Design ◽  
Future Work

Historically, open source agriculture (OSA) was based on grassroots technology generally manufactured by hand tools or with manual machining. The rise of distributed digital manufacturing provides an opportunity for much more rapid lateral scaling of open source appropriate technologies for agriculture. However, the most mature distributed manufacturing area is plastic, which has limited use for many OSA applications. To overcome this limitation with design, this study reports on of a completely 3D-printable planetary roller screw linear actuator. The device is designed as a parametric script-based computer aided design (CAD) package to allow for the easy adaption for a number of applications such as food processing at different scales. The planetary roller screw is fabricated in dishwasher-safe polyethylene terephthalate glycol (PETG) on an open source machine and tested using an open source testing platform to determine if it could maintain a constant load without slipping and the maximum force. Then, this output is compared to a direct screw press using the same materials. The results found that the maximum force is more than doubled for the roller screw actuator using the same materials, making them adequate for some food processing techniques. Future work is outlined to improve the performance and ease of assembly.

scholarly journals Computer Numerically Controlled Drawing Robot Based on Computer-Aided Design

2021 ◽  
Author(s):  
Antor Mahamudul Hashan ◽  
Abdullah Haidari ◽  
Srishti Saha ◽  
Titas Paul
Keyword(s):  
Open Source ◽  
Computer Aided Design ◽  
Low Cost ◽  
Rapid Development ◽  
Main Idea ◽  
Numerical Control ◽  
Computer Aided ◽  
Complex Circuits ◽  
Open Source Hardware ◽  
Aided Design

Due to the rapid development of technology, the use of numerically controlled machines in the industry is increasing. The main idea behind this paper is computer-aided design (CAD) based low-cost computer numerical control 2D drawing robot that can accurately draw complex circuits, diagrams, logos, etc. The system is created using open-source hardware and software, which makes it available at a low cost. The open-source LibreCAD application has been used for computer-aided design. Geometric data of a CAD model is converted to coordinate points using the python-based F-Engrave application. This system uses the Arduino UNO board as a signal generator of the universal g-code sender without compromising the performance. The proposed drawing robot is designed as a low-cost robot for educational purposes and aims to increase the student's interest in robotics and computer-aided design (CAD) skills to the next level. The drawing robot structure has been developed, and it meets the requirements of low cost with satisfactory experimental results.

Further Investigation of Multifacet Drills (MFD’s)—Mathematical Models, Methods of Grinding, and Computer Plotting

1984 ◽  
Vol 106 (4) ◽  
pp. 313-324 ◽  
Author(s):  
L. H. Chen ◽  
S. M. Wu
Keyword(s):  
Mathematical Models ◽  
Computer Aided Design ◽  
Coordinate Transformations ◽  
Geometric Characteristics ◽  
Computer Aided ◽  
Aided Design ◽  
Geometric Elements ◽  
Future Work

The geometric characteristics of nine representative Multifacet Drills (MFD’s) are summarized. Mathematical models of the various component surfaces are derived and analyzed using coordinate transformations. The mathematical models of the geometric elements are used to deduce appropriate grinding methods. Computer plots of MFD’s are also presented to check the mathematical models and to lay a foundation for future work on computer-aided design (CAD) of MFD’s.

scholarly journals SPATIAL DMBS ARCHITECTURE FOR A FREE AND OPEN SOURCE BIM

2017 ◽  
Vol XLII-2/W5 ◽  
pp. 467-473 ◽  
Author(s):  
S. Logothetis ◽  
E. Valari ◽  
E. Karachaliou ◽  
E. Stylianidis
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Computer Aided Design ◽  
Database Management System ◽  
Technological Advancement ◽  
Single Application ◽  
Building Information Modelling ◽  
Building Information ◽  
Aided Design ◽  
Spatial Database Management System

Recent research on the field of Building Information Modelling (BIM) technology, revealed that except of a few, accessible and free BIM viewers there is a lack of Free & Open Source Software (FOSS) BIM software for the complete BIM process. With this in mind and considering BIM as the technological advancement of Computer-Aided Design (CAD) systems, the current work proposes the use of a FOSS CAD software in order to extend its capabilities and transform it gradually into a FOSS BIM platform. Towards this undertaking, a first approach on developing a spatial Database Management System (DBMS) able to store, organize and manage the overall amount of information within a single application, is presented.

scholarly journals FROM OSS CAD TO BIM FOR CULTURAL HERITAGE DIGITAL REPRESENTATION

2017 ◽  
Vol XLII-2/W3 ◽  
pp. 439-445 ◽  
Author(s):  
S. Logothetis ◽  
E. Karachaliou ◽  
E. Stylianidis
Keyword(s):  
Cultural Heritage ◽  
Open Source ◽  
Open Source Software ◽  
Computer Aided Design ◽  
3D Models ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Digital Representations ◽  
Building Information ◽  
Aided Design

The paper illustrates the use of open source Computer-aided design (CAD) environments in order to develop Building Information Modelling (BIM) tools able to manage 3D models in the field of cultural heritage. Nowadays, the development of Free and Open Source Software (FOSS) has been rapidly growing and their use tends to be consolidated. Although BIM technology is widely known and used, there is a lack of integrated open source platforms able to support all stages of Historic Building Information Modelling (HBIM) processes. The present research aims to use a FOSS CAD environment in order to develop BIM plug-ins which will be able to import and edit digital representations of cultural heritage models derived by photogrammetric methods.

An Open-Source Framework for the Computer Aided Design of Complex Profile Extrusion Dies

2018 ◽  
Vol 33 (2) ◽  
pp. 276-285 ◽  
Author(s):  
A. Rajkumar ◽  
L. L. Ferrás ◽  
C. Fernandes ◽  
O. S. Carneiro ◽  
A. Sacramento ◽  
...  
Keyword(s):  
Open Source ◽  
Computer Aided Design ◽  
Complex Profile ◽  
Extrusion Dies ◽  
Open Source Framework ◽  
Computer Aided ◽  
Aided Design

Minimizing Voids With Using an Optimal Raster Orientation and Bead Width for a Material Extrusion Based Process

2016 ◽  
Author(s):  
Hasti Eiliat ◽  
Jill Urbanic
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Thin Layers ◽  
Layer By Layer ◽  
Bead Width ◽  
Planning Strategy ◽  
Material Extrusion ◽  
Aided Design ◽  
Curve Geometry ◽  
Future Work

Additive Manufacturing (AM) is the process of joining materials ‘layer by layer’ to make products from Computer Aided Design (CAD) model data. AM processes support faster product realization for a wide selection in industries. The Material Extrusion (ME) process is an AM process that builds a product from thin layers of extruded filaments from a semi-melted material such as a thermoplastic. In commercial systems, the software automatically generates the tool paths for both the model and any necessary supports, based on the curve geometry and the specified build parameters. The interior fill rotates 90° between each layer. Automatically generating the tool path can be the biggest weakness for this process planning strategy. Voids and discontinuities have been observed after evaluating test specimens developed to explore mechanical characteristics. Choosing an optimal raster orientation and bead width will help minimize voids and discontinuities in each layer. A mathematical model is introduced in this paper to find optimal raster orientation and bead widths based on the geometry of the slice for selected 2D extruded parts. As well, preliminary quality assessment metrics are introduced. Void analysis is performed to evaluate solution approaches, and the results compared. The future work will investigate utilizing multiple bead widths for a layer to minimize voids, and developing more comprehensive quality metrics to highlight problematic regions.

scholarly journals Additively Manufactured Parametric Universal Clip-System: An Open Source Approach for Aiding Personal Exposure Measurement in the Breathing Zone

2020 ◽  
Vol 10 (19) ◽  
pp. 6671
Author(s):  
Kirsi Kukko ◽  
Jan Sher Akmal ◽  
Anneli Kangas ◽  
Mika Salmi ◽  
Roy Björkstrand ◽  
...  
Keyword(s):  
Open Source ◽  
Computer Aided Design ◽  
Stress Test ◽  
Personal Exposure ◽  
Breathing Zone ◽  
Exposure Measurement ◽  
Cad System ◽  
Tooling System ◽  
Aided Design ◽  
Design Cost

Design for additive manufacturing is adopted to help solve problems inherent to attaching active personal sampler systems to workers for monitoring their breathing zone. A novel and parametric 3D printable clip system was designed with an open source Computer-aided design (CAD) system and was additively manufactured. The concept was first tested with a simple clip design, and when it was found to be functional, the ability of the innovative and open source design to be extended to other applications was demonstrated by designing another tooling system. The clip system was tested for mechanical stress test to establish a minimum lifetime of 5000 openings, a cleaning test, and a supply chain test. The designs were also tested three times in field conditions. The design cost and functionalities of the clip system were compared to commercial systems. This study presents an innovative custom-designed clip system that can aid in attaching different tools for personal exposure measurement to a worker’s harness without hindering the operation of the worker. The customizable clip system opens new possibilities for occupational health professionals since the basic design can be altered to hold different kinds of samplers and tools. The solution is shared using an open source methodology.

scholarly journals Digital publishing isn't enough: the case for ‘blueprints’ in scientific communication

2018 ◽  
Vol 2 (6) ◽  
pp. 755-758 ◽  
Author(s):  
Laura D. Jennings-Antipov ◽  
Timothy S. Gardner
Keyword(s):  
Open Source ◽  
Computer Aided Design ◽  
Science Communication ◽  
Source Code ◽  
Digital Publishing ◽  
Scientific Communication ◽  
Reaction Parameters ◽  
Long Form ◽  
Aided Design ◽  
Fundamental Shift

Since the time of Newton and Galileo, the tools for capturing and communicating science have remained conceptually unchanged — in essence, they consist of observations on paper (or electronic variants), followed by a ‘letter’ to the community to report your findings. These age-old tools are inadequate for the complexity of today's scientific challenges. If modern software engineering worked like science, programmers would not share open source code; they would take notes on their work and then publish long-form articles about their software. Months or years later, their colleagues would attempt to reproduce the software based on the article. It sounds a bit silly, and yet even, this level of prose-based methodological discourse has deteriorated in science communication. Materials and Methods sections of papers are often a vaguely written afterthought, leaving researchers baffled when they try to repeat a published finding. It's time for a fundamental shift in scientific communication and sharing, a shift akin to the advent of computer-aided design and source code versioning. Science needs reusable ‘blueprints’ for experiments replete with the experiment designs, material flows, reaction parameters, data, and analytical procedures. Such an approach could establish the foundations for truly open source science where these scientific blueprints form the digital ‘source code’ for a supply chain of high-quality innovations and discoveries.

The Use of a Machine Vision System in a Flexible Manufacturing Cell Incorporating an Automated Coordinate Measuring Machine

1993 ◽  
Vol 207 (3) ◽  
pp. 199-204 ◽  
Author(s):  
X J Wang ◽  
C Butler
Keyword(s):  
Machine Vision ◽  
Flexible Manufacturing ◽  
Computer Aided Design ◽  
Manufacturing System ◽  
Vision System ◽  
Coordinate Measuring Machine ◽  
Cad System ◽  
Measuring Machine ◽  
Processing Techniques ◽  
Aided Design

The aim of this paper is to present a practical approach to the solution of problems associated with using an automated coordinate measuring machine (CMM) in a flexible manufacturing system (FMS) environment. The approach described uses machine vision and image processing techniques to permit transformations of the coordinate systems. In order to achieve flexible inspection, the system can recognize different workpieces by a quick matching method. The actual measuring path for the workpiece is derived from the original measuring path templates to allow for a workpiece to be measured in an arbitrary orientation on the table of the CMM. The original measuring path can be generated off-line by self-teach programming or from a computer aided design (CAD) system. The generation of the actual measuring path of the CMM is not limited by the complexity of the original off-line measuring path.

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