Rapid Prototyping을 이용한 금속제품의 쾌속제작공정 개발

주영철 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1

Two rapid manufacturing processes for metal parts by using rapid prototyping have been developed. One process makes a polymer mold 꼐 뭉 uses a low melting temperature alloy as a casting meterial. This process recuces the manufacturing steps significantly and can be used to fabricate small precise metal parts or jewelry master patterns. The second process makes wax prototype that is used in the investment casting process. The RP makes pattern by CastForm powder. By dipping the CastForm pattern into the melting wax liquid, wax pattern is fabricated. By folowing the investment casting process with the wax pattern, final metal parts can be obtained. This process reduces time and cost considerably comparing the convantional wax pattern manufacturing process that makes wax molds by hands.

Simulink 기반 Rapid-Prototype을 이용한 영구자석 전동기 제어 SW 개발

함승권(Seungkwon Hahm),조승우(Seungwoo Jo),양병훈(Byunghoon Yang),박주영(Jooyoung Park),박기홍(Kihong Park),이근호(Geunho Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5

Recently, The skill that model can be applied to embedded software development project through model-based design workflow by using MATLAB/simulink is on the rise. In these days, there are many cases to partially generate code of the targer processor in the form of Rapid Prototype, but in this paper, we generate and compile the entire code of the target processor work through the process. Performed without hand coding of the target processor code generation and compile work and was debugging target processor for controlling the actual motor to be able to control. The design of the algorithm, depending on the type of motor can be controlled using the Rapid Prototype. Use Simulink’s, RAppID Toolbox’s library and needed user library for the target’s setting and designing algorithm. User library is created by MATLAB/Simulink’s Legacy code tool function, TLC(Target Language Compiler), S-Function(Systems-Function). When the design is done, go through the debugging process after code generation and compile task. To perform current control of IPMSM and to measure execution time and were able to get satisfactory results.

쾌속조형 파라미터를 이용한 표면형상정밀도 향상에 관한 연구

박재덕(Gae-Duck Park),김태호(Tae-Ho Kim),전언찬(Eon-Chan Jeon) 한국기계가공학회 2007 한국기계가공학회지 Vol.6 No.3

As a life cycle of product bas shortend, Rapid prototypiug has come into the spotlight to shortened the time of producint a prototype. But It followed in laminated directivity and of the prototype production which is decided the interference which Beccuase of invisible rough surface, some inferences have occured during an assembly hour. Consequently, This study on rapid prototyping has parameter to determine surface roughness and surface form precision of total shape. In order to improve Surface form precision, it can control parameters which are Laminate Height, Layer Hatch Overcue, Fill Cure Depth. In addition, we found the parameter which have a deep effect on surface roughness among various parameters, and then, tried to reduce the interference that can be occurred by surface roughness during assembly.

쾌속조형 파라미터를 이용한 표면형상정밀도 향상에 관한 연구

이철희(Chul Hee Lee),김태호(Tae Ho Kim),박재덕(Gae Duck Park),박정보(Jeong Bo Park),김중완(Jung Wan Kim),전언찬(Eon Chan Jeon) 한국기계가공학회 2007 한국기계가공학회 춘추계학술대회 논문집 Vol.2007 No.-

As a life cycle of product has shortend, Rapid prototyping has come into the spotlight to shortened the time of producint a prototype. But It followed in laminated directivity and of the prototype production which is decided the interference which Beccuase of invisible rough surface, some inferences have occured during an assembly hour. Consequently, This study on rapid prototyping has parameter to determine surface roughness and surface form precision of total shape. In order to improve Surface form precision, it can control parameters which are Laminate Height, Layer Hatch Overcue, Fill Cure Depth. In addition, we found the parameter which have a deep effect on surface roughness among various parameters, and then, tried to reduce the interference that can be occurred by surface roughness during assembly.

쾌속조형기술의 구현을 위한 3차원 제어시스템 개발

조성목(Cho Sung-Mok) 한국산학기술학회 2007 한국산학기술학회논문지 Vol.8 No.4

쾌속조형기술(Rapid Prototyping Technology)은 설계단계에 있는 3차원 모델을 시제품(Prototype)으로 다른 중간과정 없이 빠르게 생성하는 새로운 기술을 말한다. CAD 모델 데이터는 3차원 형상 시스템이지만 모니터 화면이나 문서로 출력할 때는 2차원으로 밖에 표시되지 않는다. 반면에 쾌속조형기술은 설계된 3차원 CAD데이터를 2차원 단면 데이터로 변환한 후 RP(Rapid Prototyping)공정을 적용하여 순차적으로 적층해 감으로써 CAD데이터와 같은 3차원 업체 형상을 제작하게 된다. 그러나 RP 시스템은 매우 가격이 비싸서 칫솔이나 완구 등과 같은 생활용품을 제작하는 중소가업에서는 구입하기 어려운 상황이다. 본 논문에서는 오픈소스를 사용하여 RP 기술을 구현함으로써 저렴한 가격으로 구매할 수 있는 RP 시스템을 개발하기 위한 3차원 제어시스템을 제안하였다. Rapid Prototyping (RP) is a technology that produces prototype parts from 3D computer aided design model data without intermediate processing technology rapidly. CAD model data are created from 3D object digitizing systems but presented just as 2D data when they are printed as a hard copy or displayed on a monitor. However, Rapid Prototyping Technology fabricates 3D objects the same that CAD data because it transforms designed 3D CAD data into 2D cross sectional data, and manufactures layer by layer deposition sequentially. But most of all the small and medium scale companies which produce a toothbrush, a toy and such like provisions are in difficult situations to buy RP system because it is very expensive. In this paper, we propose a 3D control system adopting open source programs for implementing Rapid Prototyping Technology in order that RP system can be purchase at a moderate price.

경혈학실습 체제적 교수설계를 위한 RPISD 모형 적용 연구

조은별,김재효,홍지성,Cho, Eunbyul,Kim, Jae-Hyo,Hong, Jiseong 경락경혈학회 2022 Korean Journal of Acupuncture Vol.39 No.3

Objectives : Instructional design is the systematic approach to the Analysis, Design, Development, Implementation, and Evaluation of learning materials and activities. We aimed to apply the rapid prototyping to instructional systems design (RPISD) in meridianology laboratory, a subject in which students train acupuncture to develop lesson plan. Methods : The needs of the stakeholders including client, subject matter expert and students were analyzed using the performance needs analysis model. Task analysis was implemented by observation and interview. First prototype was drafted and implemented in meridianology laboratory class once. The second prototype was modified from the first, by usability evaluation of the stakeholders. Results : The client requested an electronically documented manual to improve the quality of acupuncture training. The learner requested an extension of practice time and detailed practice guidelines. The main problems of students' performance were some cases of violation of clean needle technique, the lack of communication between the operator and recipient in direct, and lack of confidence in their own performance. Stakeholders were generally satisfied with the proposed first prototype. Second prototype of lesson plan was produced by modifying some contents. Conclusions : A lesson plan was developed by applying the systematic RPISD model. It is expected that the developed instructional design may contribute to the quality improvement of meridianology laboratory education.

Carnauba wax with Rosin Coating for Rapid Prototype Printed from the Injection Systems Plastic PLA Filament of 3D Printers with Environmentally Friendly

( Kriangsak Khiaomang ) 한국기초조형학회 2021 한국기초조형학회 학술발표논문집 Vol.2021 No.1

This research Objective: 1. To study the ratio of carnauba wax with rosin to environmentally friendly coating suitable for PLA plastics and 2. To experiment with the ratio obtained from Objective 1 to coat a prototype from a 3D printer. Methods of research were carried out by experiments for determination of mixture ratio of carnauba wax and rosin using Line blend theory as a guideline for determining the ratio. Furthermore, test the coating on the sample workpiece when getting results from the best formulas. It is used to test the coating on the product prototype. The results showed that the formula at CR 09 was the most suitable, with a ratio of 80% carnauba wax and 20% of rosin to coat the prototype by plating. By heating to about 80-85 degrees Celsius, dipping for 1 second, the film thickness is approximately 0.5 mm. In terms of the suitable solid for coating prototypes, products with a size of about 150x200x150 mm, well suitable for the next step of mold production.

Shape Reconstruction, Shape Manipulation, and Direct Generation of Input Data from Point Clouds for Rapid Prototyping

Dong-Jin Yoo,Hyuk-Hong Kwon 한국정밀공학회 2009 International Journal of Precision Engineering and Vol.10 No.1

Shape reconstruction from point clouds has received considerable attention in recent years on account of its ability to directly integrate reverse engineering with rapid prototyping. The primary objective of this study is to develop an integrated system that enables one to generate input data for rapid prototyping by constructing complete shape models from point clouds obtained with various measuring devices, including laser scanners, digitizers, and coordinate-measuring machines. We first present a novel approach to reconstructing a shape from point clouds based on implicit surface interpolation combined with domain decomposition. We then propose various related algorithms for generating input data for rapid prototyping, ranging from shape manipulation to complete solid generation. The validity of this new technique is demonstrated for a variety of point clouds with differing degrees of complexity.

CFD를 위한 실물 모델 형상 측정 및 데이터 구현

도덕희(Doh Deog Hee),조경래(Cho Kyung Rae),편용범(Pyeon Yong Beom),조용범(Cho Yong Beom) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

Rapid prototyping (RP) is becoming more important due to the rapid developments in various engineering fields such as manufacturing, designing, architecture engineering, face recognitions and simulation engineering. The usages of the conventional RP machines such as one-camera-one-light-source (laser sheet) system and one-camera-one-laser-range-sensor system have been restricted to certain applications such as strict lighting conditions can be constructed and long time measurements can be made. The developed RP system consisting of two cameras can rapidly produce the three-dimensional shape data for various practical prototypes. The developed system has been applied to produce three-dimensional data of a motorcycle model, which can be used as three-dimensional input data for Computational Fluid Dynamics(CFD).

Rapid Control Prototyping기법을 이용한 전자식 스로틀 제어기 설계 사례 연구

강종진(Jongjin Kang),이우택(Wootaik Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

This paper describes a case study to design of Electronic Throttle Controller(ETC) using Rapid Control Prototyping(RCP), in order to shorten the development cycle. RCP is a technique which reduces the development time through the model-based control design. ETC should control the position preciously and diagnose the input and feedback signals. The ETC model is designed by using Simulink<SUP>®</SUP>, Stateflow<SUP>®</SUP>" and S-function to insert a legacy code. The designed ETC model is validated by two process steps. The first step is the off-line simulation with throttle model and the second step is on-line simulation with the real throttle platform. In order to interface a controller model with the physical hardware, during on-line simulation, Prototyping System and Real-Time Interface block of dSPACE is used. ControlDesk<SUP>®</SUP> of dSPACEC is employed for the purpose of real time monitoring and calibration.