SUPERNOVA CNC plate drilling machine has subverted the traditional processing mode for the hole processing in the chemical industry. It is now the main CNC drilling machine for the processing of chemical flange, heat exchanger, tube sheet, etc. Before using the traditional hole processing method, the fitter first marked out and positioned, and then fixed the positioned tube plate on the vise, and used the radial drilling machine to drill holes. For large hole diameter, it even had to go through two procedures of drilling and reaming. Compared with the traditional hole processing method, the advantages of using CNC plane drilling machine are as follows:

（2） The advantage of NC plane drilling machine in large hole processing. The traditional large hole processing needs to go through the steps of marking, positioning, drilling, reaming and so on. The feature of NC flat drilling machine for large hole machining is full-automatic NC positioning, large hole processing and forming at one time, without secondary hole expansion.

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