• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.24-27
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• 2001

Nowadays, increasing demand of the customized products has led to an increased usage of rapid prototyping in the product development. However, the acquisition price of a rapid prototyping equipment is still too high that not every body can afford to buy one. To offer a wide access to the users who need physical prototypes, a connection of the rapid prototyping equipment to the Internet is a viable step. It would allow a large group of customers all over the world to use the manufacturing capability of a service provider offering this kind of manufacturing service. To realize how such an e-manufacturing concept can look like, a LOM-type 3D printer developed at KIST has been used as test site and connected to the Internet. A possible user can log on to the server of the equipment and view his STL file and start the building operation from a remote place. To see whether the operation runs properly, a CCD camera is used to transmit the actual state of operation online. The result so far proves the feasibility of rapid prototyping on the Internet as well as an order-adaptive manufacturing system via web.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.220-223
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• 2005

The rapid prototyping (RP) technology has been advanced for various applications such as verification of design, functional test. However, many RP machines still have low accuracy and limitation of applications for various materials. In this research, a hybrid RP system was developed to improve precision of micro parts. This hybrid system consists of deposition and material removal process by mechanical micro machining to fabricate nano composites using photo-curable polymer resin with various nano particles. In this work, using hybrid RP process with Multi-Walled Carbon Nano Tube (MWCNT) and hydroxyapatite, micro parts were fabricated. The precision of parts was evaluated based on the original CAD design, and to see the effect of nano particles on mechanical properties, tensile strength was measured. From the results of experiments, it was confirmed that the part made by hybrid process had higher precision, and the addition of nano particles improved mechanical properties.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2004년도 추계학술대회 논문집
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• pp.406-410
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• 2004

Rapid prototyping technologies have been widely used to reduce the development cost of new products. Manufacturing industries are nowadays characterized by the flexibility and complexity of products. This to due to the rapid development of manufacturing technology and diverse needs of customers. In this paper, the burning condition for getting casting product of resin pattern have been examined experimentally. In generally, the burning conditions have effect on the casting products. Using the direct casting. we directly producted the jewelry.

• 한국산학기술학회논문지
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• 제5권2호
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• pp.186-190
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• 2004

Nano size 몰드의 제작은 X-ray lithography 방법을 이용하여 몰드를 제작하고, micro size의 경우 Deep UV lithography 방법을 이용하여 몰드를 제작하고 있다. 본 연구에서는 SLS(Selective Laser Sintering)형 RP(Rapid Prototyping System)을 이용하여 미세구조 몰드를 제작하였으며, 패턴의 깊이는 400 ㎛까지 구현하였다. 제작된 몰드의 강도와 내열성을 높이기 위하여 전해도금을 이용하여 몰드의 표면에 Ni를 300 ㎛생성 시켰다.

• 대한치과교정학회:학술대회논문집
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• 대한치과교정학회 1999년도 제32회 학술대회
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• pp.43.2-43.2
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• 1999

• 한국CDE학회지
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• 제15권1호
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• pp.26-29
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• 2009

• 대한방사선협회지
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• 제28권1호
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• pp.346-346
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• 2002

• 한국CDE학회지
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• 제16권3호
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• pp.2-5
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• 2010

• 대한소아치과학회지
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• 제34권3호
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• pp.498-505
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• 2007

매복치의 치료는 발생 원인, 치아 발육 상태, 매복 위치 및 맹출 경로, 맹출 공간 여부, 환자의 연령이나 협조도 등을 고려하여 시행하며 방해 요인 제거 후 자연 맹출 관찰, 매복치의 외과적 노출 후 교정적 견인, 매복치의 재위치 또는 치아이식, 발거 후 보철수복을 할 수 있다. 이 중 치아이식은 매복치가 맹출 경로를 크게 벗어나 외과적인 노출과 교정적 견인이 어려운 경우 시행할 수 있다. 자가치아이식의 성공을 위해 이식치아의 외상을 최소화하며 치주인대의 생활력을 보존하는 것이 중요하다. 본 증례에서는 상악 좌측 견치의 미맹출을 주소로 내원한 10세 여자 환자에서 Rapid Prototyping model을 이용하여 자가치아이식술을 시행하였다. RP technique을 이용하여 제작한 공여치의 모델로 수용부의 골와동 형성을 공여치 발치전에 미리 시행함으로써 공여치의 구강 외 소요시간을 단축시키고 공여치를 수용부에 여러 번 시적할 때 생길 수 있는 치근 손상을 최소화할 수 있었다. 치료 후 상악 좌측 견치는 6개월 후 치근 흡수 등의 합병증 없이 정상 치아 동요도와 타진시 음성을 나타내었으며 전기치수검사에서 양성 반응을 보였다.

• 한국정밀공학회지
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• 제16권11호
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• pp.62-67
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• 1999

The RP&M(Rapid Prototyping and Manufacturing) is the most appropriate technology for the small-lot production system, in which the production cycle is getting shorter owing to various needs from consumers. Recently RP products which are made of plastics, wax, and paper are used to verify the design of samples. But these products cannot be applied to the real mold because the strength enough to be a mold cannot be given by soft materials such as plastics. So RP products are copied to AFR(Al powder Filled Resin) molds or metal molds, which is called the RP&M. In this paper, RP&M is applied to a casting process. A porous casting mold, which is made from ceramic powder and binder, is used for rapid tooling of aluminum shoes molds.