Mechanical drilling machine special for manufacturing industry and using method

The invention discloses a mechanical drilling machine special for a manufacturing industry. The mechanical drilling machine comprises a water tank base, and a supporting vertical column is welded to the upper surface of the water tank base; a stepping motor is arranged on the supporting vertical column, a supporting worktable is arranged on the water tank base, and a dustproof sealing box is arranged on the supporting worktable; a through hole is formed in the dustproof sealing box, and a rubber operating glove is connected to the through hole; the supporting worktable is provided with a piececlamping device which comprises a supporting plate, a first supporting block, a second supporting block, a first regulating screw rod and a second regulating screw rod; a sewage draining port is formed in the supporting workable and connected with the water tank base through a first liquid delivering tube; a liquid pump is fixed to the water tank base, and a liquid inlet of the liquid pump is connected with the water tan