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Micro-machining of Glasses using Chemical-assisted Ultrasonic Machining

화학적 초음파가공을 이용한 유리의 미세가공

  • 전성건 (강원대학교 기계메카트로닉스 대학원) ;
  • 신용주 (강원대학교 기계메카트로닉스 대학원) ;
  • 김병희 (강원대학교 기계메카트로닉스 공학부) ;
  • 김헌영 (강원대학교 기계메카트로닉스 공학부) ;
  • 전병희 (인덕대학교 컴퓨터 응용설계)
  • Published : 2003.12.01

Abstract

An ultrasonic machining process has been known as efficient and economical means fer precision machining of glass or ceramic materials. However, because of its complexity, the mechanism of the machining process is still not well understood. Therefore, it is hard to optimize the process parameters effectively. The conventional ultrasonic machining which uses the abrasive slurry only, furthermore, is time-consuming and gives the relatively rough surface. In order to increase the material removal rate and improve the integrity of the machined surface, we have introduced the novel ultrasonic machining technique, Chemical-assisted UltraSonic Machining(CUSM). The desktop-style micro ultrasonic machine has been developed and the z-axis feed is controlled by the constant load control algorithm. To obtain the chemical effects, the low concentration HF(hydrofluoric acid) solution, which erodes glass, added to alumina slurry. Through various experiments and comparison with conventional results, the superiority of CUSM is verified. MRR increases over 200%, the surface roughness is improved and the machining load decreases dramatically.

Keywords

Chemical-assisted Ultrasonic Machining;Glass;Hydrofluoric acid;Material Removal Rate

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