Software tool for detection and filling of voids as a part of tool-path strategy development for droplet generating 3D printers

Collaborative decision making is a core organizational activity that comprises a series of knowledge representation and processing tasks. Moreover, it is often carried out through argumentative discourses between the stakeholders involved. This paper exploits and elaborates on the synergy that occurs between the decision making and knowledge management processes in such contexts. The proposed multidisciplinary approach is supported by a web-based software tool. Being based on a well-defined ontology model, our approach facilitates decision makers in achieving a common understanding, while also enhancing collaboration and exploitation of organizational knowledge resources. Strategy development is the particular knowledge domain considered in this paper to demonstrate the applicability of the proposed tool.

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Finite Element Analysis to Improve the Accuracy of ABS Plastic Parts Made by Desktop 3D Printing Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.760.509 ◽

2015 ◽

Vol 760 ◽

pp. 509-514 ◽

Cited By ~ 1

Author(s):

Răzvan Păcurar ◽

Ancuţa Păcurar ◽

Florin Popişter ◽

Anca Popişter

Keyword(s):

Finite Element ◽

Fused Deposition Modeling ◽

Tool Path ◽

Low Cost ◽

Small Scale ◽

Slice Thickness ◽

Technological Parameters ◽

Element Analysis ◽

Fused Deposition ◽

3D Printers

The development of low-cost desktop versions of three-dimensional (3D) printers has made these devices widely accessible for rapid prototyping and small-scale manufacturing in home and office settings. Many desktop 3D printers rely fused deposition modeling process, that it is based on heated thermoplastic filiform material that it is extrused through a nozzle and deposited afterwards onto a heated building platform. The extruding accuracy in part fabrication is subject to transmission machinery and filament diameter on one hand and the technological parameters that are used in the manufacturing process (raster angle, tool path, slice thickness, build orientation, deposition speed, building temperature, etc.) on the other hand. The presented work try to investigate by using the finite element method, how the building temperature in close connection with the material characteristics is influencing the accuracy of a test part that has been designed in order to callibrate an Desktop 3D Printer machine that has been originally designed and produced at the Technical University of Cluj-Napoca (TUC-N).

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LMDCAM2: Software Tool for Near-Net Repair, Cladding and Built-Up by Laser Metal Deposition

Volume 1: Processing ◽

10.1115/msec2015-9243 ◽

2015 ◽

Cited By ~ 1

Author(s):

John Flemmer ◽

Norbert Pirch ◽

Fabian Drinck

Keyword(s):

Tool Path ◽

Laser Scanner ◽

Software Tool ◽

Metal Deposition ◽

Design Stage ◽

Laser Metal Deposition ◽

Tool Paths ◽

Wide Range ◽

Subtractive Manufacturing ◽

Manufacturing Applications

Laser Metal Deposition (LMD) is growing in importance as a technique for the processing and manufacturing of parts in industry. LMD is used for a wide range of applications including the repair of worn parts, the built-up of 3D structures and the surface functionalization trough cladding. In many cases, the nominal CAD model from the design stage is no longer suitable for the representation of the part geometry due to distortion or defects especially in case of a worn part. This means for the generation of close contoured tool paths it is essential to create a digital model representing the surface of the actual part. This digitalization is often achieved by using a laser scanner whose raw output is represented by point cloud. Tool path planning software (CAM) available on the market generally demonstrate substantial deficits in generating paths on scanned surface data, because these programs are usually optimized on NURBS based surfaces and in most cases were originally designed for subtractive manufacturing applications. LMDCAM2 represents a new software tool especially designed for the LMD process. It is optimized for working with 3D scanned, triangulated data based models which could include noisy data and offers fundamental features for creating and manipulating tool paths adapted to the LMD process. Besides algorithms for calculating close contoured equidistant tracks, the software is also able obtain tracks for additive production through advanced slicing techniques of a 3D model.

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Integrating a New Software Tool Used for Tool Path Generation in the Numerical Simulation of Incremental Forming Processes

Strojniški vestnik – Journal of Mechanical Engineering ◽

10.5545/sv-jme.2018.5475 ◽

2018 ◽

Vol 64 (10) ◽

pp. 643-651 ◽

Cited By ~ 6

Author(s):

Daniel Nasulea ◽

Gheorghe Oancea

Keyword(s):

Numerical Simulation ◽

Tool Path ◽

Incremental Forming ◽

Software Tool ◽

Tool Path Generation ◽

Path Generation

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Mesh-based tool path calculations for tubular joints

Advances in Mechanical Engineering ◽

10.1177/1687814020933383 ◽

2020 ◽

Vol 12 (6) ◽

pp. 168781402093338

Author(s):

Morten Lind ◽

Pål Ystgaard

Keyword(s):

Tool Path ◽

Cutting Tool ◽

Angular Resolution ◽

Software Tool ◽

Steel Tube ◽

Shop Floor ◽

Interpolation Point ◽

Reference Implementation ◽

Normal Vectors ◽

Construction Specification

Manufacturing of large steel tube structures is faced with excessive welding, fit-up and rework times in tube joints, due to various types of deviation from nominal shape of the tubes. This article presents a procedure and geometry calculus for generating cutting and welding paths based on measured geometries. The procedure poses the two measured meshes as per construction specification and invokes a mesh intersection procedure to get the mesh intersection path; performs an optional smoothing; interpolates the smoothed path to a specified angular resolution; estimates the two surface normal vectors and the two surface tangents in the plane spanned by the normals at each interpolation point; calculates the cutting tool and welding tool approach directions for obtaining the specified welding groove geometry at each interpolation point; and finally stores all the data parameterized by the interpolation angle. Illustrations of results with both synthetic, representative meshes and meshes obtained from scanning of actual tubes at the shop-floor at a manufacturer are presented. The reference implementation for the developed software tool is based on Python and uses the mesh modeller from the 3D creation suite Blender as platform.

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Systematic Sensor Selection Strategy: Development and Implementation Software Tool

Infotech@Aerospace 2011 ◽

10.2514/6.2011-1617 ◽

2011 ◽

Author(s):

Thomas Sowers ◽

Kevin Melcher ◽

George Kopasakis ◽

Louis Santi ◽

William Maul

Keyword(s):

Software Tool ◽

Sensor Selection ◽

Strategy Development ◽

Selection Strategy

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A Method and Software Prototype to Support On-Line Planning on CNC Machines

Volume 1: 34th Design Automation Conference, Parts A and B ◽

10.1115/detc2008-50123 ◽

2008 ◽

Cited By ~ 1

Author(s):

Andreas Kain ◽

Frank Hoisl ◽

Kristina Shea

Keyword(s):

Open Source ◽

Tool Path ◽

Software Tool ◽

Processing Parameters ◽

Numerical Control ◽

Line Planning ◽

Planning Stage ◽

Cnc Machines ◽

Cad Cam ◽

G Code

Process planning for parts made on CNC machines is usually performed in sequence and carried out without feeding back information about the fabrication process to the planning stage. Shifting planning capabilities to the machine level enables consideration of direct machine feedback. In this paper a method for feature decomposition and tool path planning for pocket milling on a 3 axis milling machine is presented. Based on standard computerized numerical control (CNC) technology, G-code is transferred to the fabrication machine whereat adaptation of processing parameters can take place within a feature. In order to enable a feedback loop from the processing to the planning stage, subfeature elements are defined. Interrelations between subsequent elements are identified and standardized with regard to the manufacturing needs to realize fully machined features. For each element a tool path is generated and translated into valid G-code. After fabrication of each subfeature element processing parameters can be improved. The presented method is implemented in a prototype software tool based on an open source CAD/CAM/CAE kernel and extends an existing open source CAM software framework.

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