• Title/Summary/Keyword: Product Verification Process

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Accuracy Improvement in Transfer-Type Variable Lamination Manufacturing Process using Expandable Polystyrene Foam and Experimental Verification (단속형 가변 적층 쾌속 초형 공정(VLM-ST)을 위한 정밀도 향상에 관한 연구 및 실험적 검증)

  • Choe, Hong-Seok;An, Dong-Gyu;Lee, Sang-Ho;Yang, Dong-Yeol
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.7
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    • pp.97-105
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    • 2002
  • The use of rapid prototyping (RP) has reduced time to market, cut total costs and improved product quality by giving design and manufacturing teams the opportunity to verify and fine tune designs before committing them to expensive tooling and fabrication. In order to improve their unique characteristics according to the working principles, Variable Lamination Manufacturing process (VLM-ST) and corresponding CAD/CAM software (VLM-Slicer) is developed. The objective of this study is to improve the accuracy of VLM-ST process, and it can be done by offset fur cutting error correction, cutting path overrun fur sharp edge and reference shape generation for off-line stacking. It has been shown that, through the verification experiments for given practical shapes, the proposed algorithms are effective for diverse categories of three-dimensional shapes.

Study on Relationship among Simplicity/Complexity, Balance and Consumer Preference of Product (심미적 영향요소인 단순/복잡, 균형 그리고 선호도에 관한 연구)

  • Kim Tai-Ho;Cho Kwang-Soo
    • Science of Emotion and Sensibility
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    • v.8 no.2
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    • pp.103-115
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    • 2005
  • This research aimed at a clear definition of simplicity and complexity and other elements of product aesthetics and investigated the influence of simplicity/complexity on consumer preference, and balance. The research also made it an objective to find answers to underlying questions of whether there is a relationship between simplicity/complexity, and balance, and if there is, then how is the relationship? and is balance in a product's aesthetics an influential factor? does a relationship exist between consumer preference, simplicity/complexity, and balance? In conclusion, the research process categorized products into groups by use of FCB Grid, and analyze4 each group to establish a prototype which represents the group, then questionnaires where presented to consumers in order to find satisfaction to consumer preference. Also, the research proposes a verification method through design process.

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Development of the Diode Laser Heat Treatment Robot System Based on OLP Simulator (OLP 시뮬레이터 기반의 다이오드 레이저 열처리 로봇시스템 개발)

  • Park, Kee-Jin;Yoon, Sung-Ho
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.14 no.5
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    • pp.8-14
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    • 2015
  • Heat treatment for car body molds is mainly a manual process performed by a worker. The performance of this process is affected by workers' skill level, and has limitation in maintaining uniform product quality. In this study, we developed a diode laser heat treatment robot system that implements an OLP type simulator to overcome the limitation of manual process, and to improve and stabilize the quality level. In addition, we verified the efficiency of the robot system and mechanism stability from the early stage through design verification and simulated analysis in the development stage. In addition, we carried out a field test to study the way to establish optimized D/B for diode laser heat treatment criteria for car body molds, such as heat treatment speed, interval, etc. via site experiment.

CAPP for 3D Printer with Metallic Wire Supplied from the Front (금속선재 전방공급형 3D프린터를 위한 공정계획)

  • Kim, Ho-chan;Kim, Jae-gu
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.17 no.5
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    • pp.155-160
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    • 2018
  • The materials used for 3D printing are mainly plastic and metal. These materials are usually used in the powdered form. In order to improve the surface roughness of a manufactured product, these powders should consist of small uniform spherical particles. However, the powdered forms are sold at a considerably higher price than bulk or wired materials. When a wire-type material is used instead of a powder, we can supply a relatively large amount of the material at one time as well as reduce the cost. Moreover, the use of this form of the material will increase the process efficiency. This paper deals with the technology required to feed a wire material in front of the tool movement and discusses the examples used for the verification.

Development and Application of Guidelines for Cresumer Product Design (크리슈머(Cresumer) 제품 디자인을 위한 가이드라인 개발 및 적용)

  • Yoo, Cho long;Lee, Tae Il
    • Design Convergence Study
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    • v.18 no.6
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    • pp.27-39
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    • 2019
  • The purpose of this study is to develop design guidelines for developing innovative products utilizing the characteristics of creative consumers(cresumers) who create alternative usages of consumer products, and to suggest effective way of applying the guidelines in design process. To do this, the study conducted the analysis on the characteristics and types of cresumers and in-depth interviews and observations of actual cresumers. The study was able to initially come up with 131 items in 7 categories through keywordization and affinity analysis of prior outcomes, and reorganized and modified those to 52 items in 4 categories. After verification of co-relationship and credibility analysis with 2 evaluation sessions (7-scale SD), the study has reached 4 categories - product concept development, product development, product use environment, and market possibility - with 46 guideline items. The study developed a design toolkit to effectively apply the guidelines in the product development process. The toolkit consists of three chapters and provides explanations and related examples to clarify the categories and individual guidelines, designed in the form of cards and booklet.

A Study on the Fabrication and Performance Evaluation of Worm Gear Reducer (웜기어 감속기 제작 및 성능평가에 관한 연구)

  • Lee, Dong Gyu;Zhen, Qin;Jeon, Min Hyong;Kim, Lae Sung;Lyu, Sung-Ki
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.17 no.1
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    • pp.1-7
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    • 2018
  • We aimed to develop a high quality 3.5 ton class swing reducer by studying the efficiency improvement of the reducer through the optimum design and performance evaluation of the assembled, high efficiency, lightweight 3.5 ton swing reducer. Based on the optimal design of the worm and worm wheel, the optimal manufacturing method of the worm wheel, the optimized casing design, and the optimum design of the output pinion, Respectively. Therefore, in this paper, to improve the efficiency of the worm gear reducer system, we will develop the manufacturing technology and verify the mass production by combining the manufacturing process design, processing and assembling technology according to the optimization design. We have conducted research to realize mass production by product verification such as product efficiency, reliability and durability according to optimal design of worm gear reducer.

Quality Verification of Legacy Data of Manufacturing Information System to Improve Results of Shipyard Manufacturing Logistics Simulation (조선소 생산물류 시뮬레이션 결과 정도 향상을 위한 생산정보시스템 기간 정보 검증)

  • Lee, Jonghak;Lee, Philippe;Yoon, Kyungwon;Nam, Jong-Ho
    • Journal of the Society of Naval Architects of Korea
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    • v.51 no.6
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    • pp.510-520
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    • 2014
  • Unlike other mass production in small variety, shipbuilding process is a project-based method in single variety, which causes unpredictable volatility in the planning system. In shipyards, series of manufacturing processes from fabrication to erection is sequentially carried out. In order to predict unfavorable changes such as overload or low load of working volume, computerized simulation has been being gradually adopted. The data used in the simulation are processed from the database of the main scheduling and planning system. Thus the quality of those data is very crucial for the meaningful results. Unfortunately, research on the verification of data quality is very rare and hardly known to the authors. In this work, using the database of scheduling and product information system of a large domestic shipyard, the data required for the simulation are qualitatively analyzed and verified.

Process Design and Experimental Verification of Airbag Inflator Cap Forming (에어백 인플레이터 캡 성형 공정 개발 및 검증)

  • Lee, D.K.;Lee, M.S.;Park, J.W.;Kang, B.S.
    • Transactions of Materials Processing
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    • v.27 no.4
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    • pp.201-210
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    • 2018
  • An airbag is an essential automotive component used in all kinds of vehicles such as an internal combustion engine and an electric motor vehicle and is used to minimize the damage of an occupant in the event of an accident. Airbag-related parts are being monopolized by a small number of foreign companies around the world. In this situation, it is necessary to develop and research the airbag-related part molding technology for expansion of the domestic airbag-related market and corporate export. As a part of this research, we have developed a mold for airbag inflator cap. The development consists of three steps which are the design of components, analysis of the design and verification of it. In the case of the design, the transfer type mold was designed for the multi-cylindrical shaped feature. Analysis was then conducted on the design. By examining the results of analysis, changing features and numbers of punches and dies were added in the analysis and repeatedly analyzed. After the addition, proper dimensions from the analysis were achieved, and prototypes were practically produced and verified. In the case of prototype verification, Pressurizing Burst Test was conducted on the existing products and the prototype. By comparing the results of the test, the possibility of replacing the existing product of the airbag inflator cap is presented in this paper.

Quality Management Plan of Marine digital AtoN Information Management and Service System Development (해양 디지털 항로표지 정보협력시스템 개발 과제 품질 관리 방안)

  • Hae-Uk Kwon;Se-Hwan Lee;Dal-min Lee;;Bong-Won Jeong
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2022.06a
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    • pp.88-90
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    • 2022
  • For the quality management of software developed in Marine digital AtoN Information management and service system development project, an international standard-based quality process and a project management system-based communication and information sharing system were established. In addition, high-quality software development is achieved by monitoring the status of project output creation and supporting software quality inspection and verification.

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Classification of Product Safety Management Target by RAP and Cluster Analysis for Consumer Safety (소비자안전을 위한 RAP 및 군집분석을 통한 제품안전 관리대상 유형분류 연구)

  • Suh, Jungdae
    • Journal of the Korean Society of Safety
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    • v.33 no.6
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    • pp.128-135
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    • 2018
  • Currently, the government selects products that are likely to cause harm to consumers as safety management targets and classifies them into three types: safety certification, safety confirmation, and supplier conformity verification. In addition, the government conducts safety surveys on products in circulation or accident products, and recalls products that are of great concern to consumer risks. In this paper, we have developed RAP (Risk Assessment method based on Probability), which is a probability based product risk assessment method, for the classification of safety management type of product and safety investigation, and have shown an application example. In this process, information is used for the CISS (Consumer Injury Surveillance System) of the Korean Consumer Agency. In addition, we apply the cluster analysis to classify the current supervised children products into three groups. Then, we confirm the effectiveness of RAP by comparing the result of RAP application, cluster analysis result and current safety management classification type. Also, we recognize the need to review the current safety management classification criteria for classifying products into three types.