Adaptive Slicing Algorithm Based on STL Model

2013 ◽  
Vol 288 ◽  
pp. 241-245 ◽  
Author(s):  
Xiao Di Pan ◽  
Kun Chen ◽  
Zheng Yan Zhang ◽  
Ding Fang Chen ◽  
Tao Tao Li
Keyword(s):  
Rapid Prototyping ◽  
Topological Information ◽  
Adaptive Slicing ◽  
Stl Model ◽  
Forming Precision ◽  
Intersection Points ◽  
The Relationship

An adaptive slicing algorithm based on stereo lithography (STL) model was proposed in order to improve the forming precision of product in rapid prototyping. In the algorithm, the topological information of STL model was established, and the relationship between triangle facet and vertexes was constructed. And the adaptive slicing process based on STL model was implemented using the proposed method with combination of intersection points tracking and marking. The slicing thickness was automatically calculated according to the area differential ratio of adjacent slices.

The Research on Macro Charged Jet Phenomenon and its Orderly Collection

2011 ◽  
Vol 121-126 ◽  
pp. 1156-1159
Author(s):  
Yuan Yuan Liu ◽  
Qing Wei Li ◽  
Qing Xi Hu ◽  
Chang Juan Jing ◽  
Qiang Gao Wang
Keyword(s):  
Rapid Prototyping ◽  
Influence Factors ◽  
Small Diameter ◽  
Rotating Disk ◽  
Linear Motion ◽  
Injection Speed ◽  
Collection Device ◽  
Forming Precision

Macro charged jet molding combines with Rapid Prototyping and electrospinning together, it solved the problem of insufficient forming precision with RP molding and the difficulty of collection with electrospinning which caused by highly injection speed and small diameter. This article talks about Macro charged jet phenomena of PEO solution and its influence factors through experiment, detected diameter of the shoot fluid by using microscope, measured micro-injection speed by using the rotating disk with linear motion collection device, achieved orderly collection of Macro charged jet with different diameter and injection speed.

scholarly journals Creative Accounting – Definition, Types, Purposes and Impact on United Nations’ Sustainable Development Goals

2020 ◽  
pp. 328-341
Keyword(s):  
Sustainable Development ◽  
United Nations ◽  
Earnings Management ◽  
Sustainable Development Goals ◽  
General Term ◽  
Income Smoothing ◽  
Creative Accounting ◽  
Development Goals ◽  
Intersection Points ◽  
The Relationship

This article aims to define what is the essence of the so called "creative accounting", its purposes, types of creative accounting techniques and methods and how it relates to and impacts the United Nations’ sustainable development goals (SDGs). Various definitions and characteristics are given to this phenomenon – different authors use variety of terms such as earnings management, income smoothing, creative accounting practices, aggressive accounting, cook the books, accounts manipulation, or window dressing. Irrespectively how it is called, it relates to one and the same thing – presentation of companies’ financial position, cash accounts, equity and earnings in a way that pursues specific personal objective. In most cases, this deliberate presentation is not fraudulent and does not violates the law or the relevant accounting standards, but breaks down the confidence in accounting profession and contradicts to the ethical principles of professional accountants. Specific attention is given to the relationship between accounting and sustainability and particularly, how creative accounting practices impact the achievement of United Nations’ sustainable development goals. Literature analysis and deliberations are presented on how creative accounting prevents the fair allocation of resources in economy and the damage it causes to society. This study does not pretend to explore in detail either the creative accounting, or the SDGs, but its essential objective is to create a basic overview on both phenomena and find intersection points between them. A lot of studies explore the relationship between accounting as a general term and UN’ Sustainable Development Goals, but very few are focused specifically on the link between creative accounting and it’s influence on the achievement of those goals.

An adaptive slicing approach to modelling cloud data for rapid prototyping

2003 ◽  
Vol 140 (1-3) ◽  
pp. 105-109 ◽  
Author(s):  
Y.F. Zhang ◽  
Y.S. Wong ◽  
H.T. Loh ◽  
Y.F. Wu
Keyword(s):  
Rapid Prototyping ◽  
Adaptive Slicing ◽  
Cloud Data

Research of Fused Deposition Modeling Process Oriented Component Design

2015 ◽  
Vol 1095 ◽  
pp. 828-832 ◽  
Author(s):  
Zi Fan Huang ◽  
Yue Long Ma ◽  
Jia Hai Wei ◽  
Ai Qiong Pan ◽  
Jun Liu
Keyword(s):  
Rapid Prototyping ◽  
Fused Deposition Modeling ◽  
Reference Value ◽  
Design For Manufacturing ◽  
Fused Deposition ◽  
Component Design ◽  
Forming Precision ◽  
Deposition Modeling ◽  
Process Oriented ◽  
Low Efficiency

In the process of Fused Deposition molding (Fused Deposition Modeling, FDM), because the 3 d design is disconnected with manufacturing (or process), and prototype and precision is influenced by many factors, there are many disadvantages such as much design rework, difficult processing, low efficiency and high cost. Based on the concept of Design for Manufacturing ((Design for Manufacturing, DFM), this paper analyzes several factors that influence the forming accuracy, and puts forward the corresponding solutions to improve rapid prototyping manufacture parts strength and forming precision, combined with the actual rapid prototyping processing. It has certain reference value in the study of parameter selection and structure improvement of FDM process oriented component design.

The Optimization of Modeling Orientation in FDM

2016 ◽  
Vol 693 ◽  
pp. 1163-1168
Author(s):  
Hong Bin Li ◽  
Ying Tian ◽  
Peng Lin Li ◽  
Lei Zhang ◽  
Yu Long Wang
Keyword(s):  
Path Planning ◽  
Rapid Prototyping ◽  
Layer Thickness ◽  
Influencing Factors ◽  
Optimization Algorithm ◽  
Optimization Methods ◽  
Extrusion Speed ◽  
Adaptive Slicing

This paper introduces an optimization algorithm for rapid prototyping. In the optimization algorithm, several important influencing factors are considered, such as the molding direction, the extrusion speed, and layer thickness, etc. And the velocity and effectiveness of the method are validated experimentally. The algorithm can get the best molding direction and maximum hierarchical layer thickness. The method is comprehensive, overcoming the problems of current optimization methods for one-side shortcomings, and can make guidance for the adaptive slicing and path planning.

Development of a Forging Type Rapid Prototyping System (Relationship Between Hammering Direction and Product Shape)

2012 ◽  
Vol 6 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Keigo Takasugi ◽  
◽  
Hidetake Tanaka ◽  
Mami Jono ◽  
Naoki Asakawa ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Sheet Metal ◽  
Industrial Robot ◽  
Cutting Process ◽  
Tool Paths ◽  
Potential Source ◽  
Cad Cam ◽  
The Relationship ◽  
Rapid Prototyping System

The study deals with forging type rapid prototyping system that automates metal hammering done by an industrial robot. In order to automate metal hammering work, a CAD/CAM system is required to define product shapes and generate tool paths. However, the hammering process differs from the cutting process in that the hammering errors accumulate. Thus, unsuitable work methods threaten to cause both deterioration of work accuracy and sheet metal fractures. However, the relationship between the effects of errors and hammering results has not yet been fully defined. Hence, in this report, the effects of hammering direction on product shape is taken up to make these relationships clear, and a method to improving work accuracy is proposed in order to reduce the potential source of errors. Finally, the usefulness of the devised method is confirmed experimentally.

Development of Pipe Flow Generators

2011 ◽  
Vol 233-235 ◽  
pp. 2432-2438
Author(s):  
Song Hao Wang ◽  
Ronald José Doblado Perez ◽  
Ronald García ◽  
Jia Cheng Chen
Keyword(s):  
Rapid Prototyping ◽  
Pipe Flow ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Rotor Design ◽  
Modern Engineering ◽  
Different Types ◽  
Computational Fluid Dynamics Cfd ◽  
Turbine Design ◽  
The Relationship

This study aims to research and develop Pipe Flow Generators. The focus in this paper is on the rotor design for pipes of different sizes. Modern engineering tools such as Computational Fluid Dynamics (CFD) software and Rapid Prototyping technology are utilized to facilitate the numerical and experimental studies. The CFD numerical simulations consist of two and three-dimensional transient and steady analyses. These simulations were conducted to find the relationship between the flow rate, blade geometry and number of blades. During the experimentation process, Rapid Prototyping Technology (RP) was used to fabricate many different types of turbine geometries to test different impeller parameters. RPM and voltages where measured for each turbine design. The study leads to several important findings for better pipe flow generators design.

Rapid Prototyping Technology in the Three Dimensional Model of Hierarchical Processing

2015 ◽  
Vol 713-715 ◽  
pp. 147-151
Author(s):  
Xiang Ping Li ◽  
Qing Shun Wang ◽  
Wei Sun
Keyword(s):  
Rapid Prototyping ◽  
Three Dimensional ◽  
Hierarchical Approach ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Stl Model ◽  
Hierarchical Processing ◽  
Tiered Approach ◽  
Hierarchical Algorithm ◽  
Cad Models

Rapid prototyping technology can generate parts directly from the three-dimensional CAD entity data, hierarchical algorithm is a key link in rapid prototyping manufacture. In this paper, mainly used a hierarchical approach in RP equipment,for the study aimed at three commonly hierarchical algorithm (hierarchical algorithm based on STL model, direct sliced of CAD models, Smart Slice based on STL model) by Perspective, trying to provide a reference for the stratification algorithm of RP system by comparison of the three tiered approach,This paper argues that the Smart slicing algorithm based on STL model is more accurate stratification algorithm

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