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FDM에서 SLICE INTERVAL이 시작품의 표면에 미치는 영향
하만경,전재억 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4
The FD process is analogous to the direct piston extrusion process where the cold feed filament acts as a piston, extruding the molten filament from the heated liquefier through a nozzle. The extruded filament is deposited on top of fixtureless platform, where the liquefier and the nozzle move in X and Y direction control by computer based on the part geometry. After the first layer, the Z platform indexes down and the next layer get deposited on top of the first layer, the layer by layer building process introduces surface problem. This paper describes effect of slice interval of the parts built by fused deposition modelling rapid prototyping system.
CBN 과 WA숫돌에 의한 연삭에서 연산력과 표면거칠기 특성
하만경,곽재섭,양재용,정영득,심성보,류인일 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.1
In this study an experimental investigation was conducted to find the grinding characteristics of ceramics, STD11 and STS304 materials. The grinding force and the microscopic observation of the workpieces were obtained in surface grinding. Grinding characteristics of ceramics were inspected through the microscopic examination, the cutting force, and the surface roughness. It has been found that the grinding force of ceramics is relatively low as compared to that of steels and that CBN wheel has an excellent performance. The surface roughness was measured according to the feedrate and the depth of cut.
FDM에서 곡면부의 접선기울기가 제품의 표면에 미치는 영향
하만경,전재억,Ha, Man-Kyung,Jun, Jae-Uhk 한국기계가공학회 2002 한국기계가공학회지 Vol.1 No.1
Fused deposition modelling(FDM) is a rapid prototyping(RP) process that fabricates part layer by layer by deposition of molte thermoplastic material extrude from a nozzle. RP system has benefits. Benefit would be the ability to experiment with physical objects of any complexity m a relatively short period of time. But it has a matter of surface roughness and geometric accuracy. We study on Influence of tangent line angle on surface roughness at fused deposition.