scholarly journals Method for Segmentation and Hybrid Joining of Additive Manufactured Segments in Prototyping Using the Example of Trim Parts

Designs ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 2
Author(s):  
Nils König ◽  
Ferdinand Schockenhoff ◽  
Adrian König ◽  
Frank Diermeyer

Rapid prototyping has become increasingly popular over the past years. However, its application is heavily confined to a part size that fits the small build volume of additive machines. This paper presents a universal design method to overcome this limitation while preserving the economic advantages of rapid prototyping over conventional processes. It segments large, thin-walled parts and joins the segments. The method aims to produce an assembly with minimal loss to the performance and characteristics of a solid part. Based on a set of requirements, a universal segmentation approach and a novel hybrid joint design combining adhesive bonding and press fitting are developed. This design allows for the force transmission, positioning, and assembly of the segments adaptive to their individual geometry. The method is tailored to fused deposition modeling (FDM) by minimizing the need for support structures and actively compensating for manufacturing tolerances. While a universal application cannot be guaranteed, the adaptive design was proven for a variety of complex geometries. Using automotive trim parts as an example, the usability, benefits, and novelty of the design method is presented. The method itself shows a high potential to overcome the build volume limitation for thin-walled parts in an economic manner.

Author(s):  
Thierry Laliberté ◽  
Clément M. Gosselin ◽  
Gabriel Côté

Abstract In this paper, a framework for the rapid prototyping of lower-pair, geared-pair and cam mechanisms using a commercially available CAD package and a Fused Deposition Modeling (FDM) rapid prototyping machine is presented. A database of lower kinematic pairs (joints) is developed experimentally. Geared-pair and cam mechanisms are also developed. These mechanisms are then used in the design of the prototypes. Examples are presented in order to demonstrate the potential of this technique. Physical prototypes can be of great help in the design of mechanisms by allowing the 3D visualization of the mechanism as well as providing an experimental validation of the geometric and kinematic properties.


2017 ◽  
Vol 756 ◽  
pp. 88-95
Author(s):  
Ema Nováková-Marcinčinová ◽  
Anton Panda ◽  
Ľudmila Nováková-Marcinčinová

The article focuses on the samples production of organic material PLA-PolyLacticAcid – bioplastic. The main part describes the experimental testing of PolyLacticAcid plastic and sample production by Fused Deposition Modeling, Rapid Prototyping technology. The article presents selected carried out tests of mechanical properties focused mainly on the determination of ultimate tensile strength of two PLA-BIO plastic extruded horizontally along the width produced by FDM method, Rapid Prototyping. The authors of this article present their results of test materials in the form of measurement protocols recorded in software, the measured values in a static tensile test, recorded in tables and shown in work graphs. Based on the results of the two samples produced from PLA biomaterials and compared to determine which PLA – bioplastic is stronger.


2014 ◽  
Vol 548-549 ◽  
pp. 1901-1904
Author(s):  
Yusoff Way ◽  
M. Azrai ◽  
A. Hadi Mohamad

The aims of this research is to improve the design of IV cannula stopper or also known as heparin cap by utilizing the application of product design and development approach and employing Fused Deposition Modeling (FDM) machine. For this reason, the user requirements to identified target specifications and concept generation were proposed and the IV cannula stopper prototypes were fabricated using Rapid Prototyping technology (RP). This research would give an improvement over existing standard of IV cannula. The generated design from this research will improve the handling of IV cannula as well as ensuring its safety during the operation of IV cannula.


2015 ◽  
Vol 1095 ◽  
pp. 828-832 ◽  
Author(s):  
Zi Fan Huang ◽  
Yue Long Ma ◽  
Jia Hai Wei ◽  
Ai Qiong Pan ◽  
Jun Liu

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.


2014 ◽  
Vol 20 (5) ◽  
pp. 403-412 ◽  
Author(s):  
Victor A. Lifton ◽  
Gregory Lifton ◽  
Steve Simon

Purpose – This study aims to investigate the options for additive rapid prototyping methods in microelectromechanical systems (MEMS) technology. Additive rapid prototyping technologies, such as stereolithography (SLA), fused deposition modeling (FDM) and selective laser sintering (SLS), all commonly known as three-dimensional (3D) printing methods, are reviewed and compared with the resolution requirements of the traditional MEMS fabrication methods. Design/methodology/approach – In the 3D print approach, the entire assembly, parts and prototypes are built using various plastic and metal materials directly from the software file input, completely bypassing any additional processing steps. The review highlights their potential place in the overall process flow to reduce the complexity of traditional microfabrication and long processing cycles needed to test multiple prototypes before the final design is set. Findings – Additive manufacturing (AM) is a promising manufacturing technique in micro-device technology. Practical implications – In the current state of 3D printing, microfluidic and lab-on-a-chip devices for fluid handling and manipulation appear to be the most compatible with the 3D print methods, given their fairly coarse minimum feature size of 50-500 μm. Future directions in the 3D materials and method development are identified, such as adhesion and material compatibility studies of the 3D print materials, wafer-level printing and conductive materials development. One of the most important goals should be the drive toward finer resolution and layer thickness (1-10 μm) to stimulate the use of the 3D printing in a wider array of MEMS devices. Originality/value – The review combines two discrete disciplines, microfabrication and AM, and shows how microfabrication and micro-device commercialization may benefit from employing methods developed by the AM community.


2012 ◽  
Vol 245 ◽  
pp. 85-89
Author(s):  
Mircea Ionescu ◽  
Ileana Constanţa Roșca

Studies and researches in medical devices made evident the need of new systems and technologies for locomotors recovery of human body as to reduce the reintegration time in normal activities and, not the least, to improve the recovery quality, to give the possibility to perform natural movements identical to those before the suffered injury. Thus, the purpose of this paper is to obtain the 3D virtual model of a mechanism describing the hand kinematics, and a real medical prototype device to be used in locomotors recovery of the hand. In order to perform the movements, pneumatic fluidic actuators are used, considering that they are flexible, small, made especially for this project. A specialized software for assisted design is used to obtain the virtual model and for the fabrication of device component parts Rapid-Prototyping technology is applied, the Fused Deposition Modeling principle (FDM).


Author(s):  
Tran Linh Khuong ◽  
Zhao Gang ◽  
Muhammad Farid ◽  
Rao Yu ◽  
Zhuang Zhi Sun ◽  
...  

Biomimetic robots borrow their structure, senses and behavior from animals, such as humans or insects, and plants. Biomimetic design is design ofa machine, a robot or a system in engineeringdomain thatmimics operational and/orbehavioral model of a biological system in nature. 3D printing technology has another name as rapid prototyping technology. Currently it is being developed fastly and widely and is applied in many fields like the jewelry, footwear, industrial design, architecture, engineering and construction, automotive, aerospace, dental and medical industry, education, geographic information system, civil engineering, guns. 3D printing technology is able to manufacture complicated, sophisticated details that the traditional processing method cannot manufacture. Therefore, 3D printing technology can be seen as an effective tool in biomimetic, which can accurately simulate most of the biological structure. Fused Deposition Modeling (FDM) is a technology of the typical rapid prototyping. The main content of the article is the focusing on tensile strength test of the ABS-Acrylonitrile Butadiene Styrene material after using Fused Deposition Modeling (FDM) technology, concretization after it’s printed by UP2! 3D printer. The article focuses on two basic features which are Tensile Strength and Determination of flexural properties.


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