EPS foam 패턴 가공을 위한 쾌속 열용삭 공정 개발에 관한 연구

Abstract

Present RPM technologies are classified into laminating and machining processes by fabrication method. Even though the laminating process has several advantages such as easy fabrication of complex shape, the process is not widely used in industry. Post-processing resulting from the nature of layer-by-layer building process is extremely labor–intensive and time-consuming. Compared with the laminating process, the machining process leads to better surface finish and dimensional accuracy. However, the machining processes have had the fundamental disadvantages of unsatisfactory cutting mechanisms: too much time has been required to cut a given part. Therefore, a new cutting mechanism is needed to resolve these problems. In this paper, a new rapid manufacturing process, a rapid heat ablation (RHA) process using rotary hot tool has been developed to overcome some fundamental disadvantages, such as excessive cutting time and leftover material caused by the cutting mechanism. The RHA process employs a synchronized three-axis table to move the hot tool according to a toolpath, and it uses a two-axis indexing table for a multi-face ablation. In order to verify the practical applicability and efficiency of the RHA process, various geometrically complex three-dimensional parts made of EPS foam are manufactured with the RHA apparatus.