DRILLING MACHINE FOR SHEET PLATE OF HEAT EXCHANGER

A drilling machine for processing a sheet plate of a heat exchanger is provided to process the workpiece of a various type easily and to improve the productivity by selectively controlling the position of a head unit and by vertically dividing the supporting boards. A drilling machine for processing a sheet plate of a heat exchanger comprises a head unit(10), a supporting bar(20), and a base(30). The head unit is mounted on a cutting tool to implement a processing work. The supporting bar is vertically installed to be contacted with the upper end of the head unit. The base is mounted on an installation surface to be contacted with the lower end of the supporting bar. The supporting bar comprises a first supporting board(22) contacted with the head unit part, a second supporting board(24) contacted with the base part. A sliding unit is formed to selectively control the position of the head unit to be contacted with the upper end of the second supporting board and the lower end of the first supporting board.