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기구 형태설계 자동화를 위한 컴포넌트 모듈 접근법에 관한 연구
김봉주(B. J. Kim),윤호업(E. H. Yoon),신중호(J. H. Shin),권순만(S. M. Kwon),장세원(S. W. Jang) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The mechanism design is synthesis of suitable mechanism which can be output motions about input motions. That has generally two steps which are the type synthesis and the dimensional synthesis. And required mechanism analysis step for confirming middle or final result. The type synthesis is definition of mechanism type which required aim and the dimensional synthesis is calculation of dimension about defined type mechanism. The type synthesis of mechanism is included qualitative design field which isn"t defined systematic design method. especially, the most difficult step for mechanism design automation. In this paper proposed the component modular design method which is figured mechanism types automate with component modules using component modular approach. And develop CAD(Computer Aided Program) program for application.
FDM 방식 3D 프린팅의 방산 장비 적용 가능성 검토
정봉진(B. J. Jeong),김상진(S. J. Kim),장세원(S. W. Jang),최윤혁(Y. H. Choi) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
3D printing can provide several products of complex shapes at the same time and is efficient in producing small quantities of multiple varieties by minimizing component assembly. In particular, FDM 3D printing is used in various industrial fields due to its fast production time and low cost. Despite these advantages, there is a disadvantage in that it is easily deformed by physical force in a high temperature environment, and thus, 3D prints are used only in mock-up and jig rather than actual defense products in the defense industry. However, defense products are easily exposed to harsh environmental conditions because of environmental testing. The conditions applied to each product part vary depending on the design, and there are parts exposed to relatively non-harsh conditions, and these parts are considered applicable to FDM-type outputs. Therefore, in this study, the loading limit was derived through the load test for each temperature of the FDM output, and the applicability of the FDM output to the defense product was examined through the structural analysis technique.
마찰효과를 고려한 사이클로이드 감속기의 작용력 해석에 관한 연구
홍진표(J. P. Hong),신중호(J. H. Shin),권순만(S. M. Kwon),장세원(S. W. Jang) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
A cycloidal speed reducer is a type of the speed reducers of machinery. The cycloidal speed reducer consists of two cycloidal plate gears, housing roller gear, input shaft, output pin and shaft, and eccentric bearings. Especially the cycloidal plate gear has the peculiar parts of the teeth, because of gearing with the housing roller gear that has the several rollers on the circular line. And then all teeth on the cycloidal plate gear can be designed to contact with the rollers on the housing roller gear at the same time. Therefore the cycloidal plate gear has always contact motion with rollers and the force is interacted between roller gear with cycloidal plate gear. Because the contact force and friction force must be required to improve the accuracy in design procedures of cycloidal speed reducers, this paper presents a force analysis considered friction effect approach derived by static force equilibrium condition, geometrical adaptation, instant velocity center method and relative velocity method.