Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Performance Optimization of Down-the-Hole Hammer Using Taguchi Method

다구찌 기법을 이용한 Down-the-Hole Hammer의 타격성능 최적화에 관한 연구

  • Received : 2011.06.21
  • Accepted : 2011.11.16
  • Published : 2012.01.01
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Abstract

There are a number of studies concentrating on drilling equipment and drilling methods, but none investigates the impact performance and optimization of DTH (down-the-hole) drilling. It is very difficult to experimentally evaluate the performance of a DTH hammer, because putting together an experimental setup for DTH drilling requires a great deal of money and time. Therefore, this paper examines the characteristics and performance of DTH hammers through pneumatic simulation after a thorough investigation of their working mechanism. In addition, the parameters linked to the performance of DTH hammers were selected using the design-of-experiment method, and then the optimization of performance factors, which are the impact rate and impact energy, was investigated using Taguchi method.

현재 천공장비 및 천공방법에 대한 많은 연구가 진행되고 있지만 DTH hammer의 타격성능을 규명하고 최적화에 대한 연구는 전무하다. 또한 DTH drilling의 시험 장비를 구축하기 위해서는 막대한 비용과 많은 시간이 요구되기 때문에 성능규명에 있어 시험적으로 접근하기가 매우 곤란한 실정이다. 따라서 본 논문에서는 DTH hammer의 구동원리를 파악 후 공압 해석을 이용하여 구동 특성 및 성능을 규명하였다. 또한 실험계획법을 이용하여 DTH hammer의 성능에 영향력이 있는 설계인자를 도출하고 이를 다구찌 기법에 적용해 DTH hammer의 타격성능인 타격수와 타격에너지의 최적화에 대한 연구를 수행하였다.

Keywords

References

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