Have the boring machine clamping apparatus with oriented cutting tool, customarily calls boring pattern. Of the bracket that covers according to boring decorate formal cent to be: Bosseyed and oriented, direct bracket is decorated namely mix in front of cutting tool double-faced and oriented, direct bracket is decorated namely at the back of cutting tool. Boring of boring model design covers boring apply mechanically at guiding boring lever, but cent is covered for stationary boring and circumgyrate type boring is covered; Boring model bracket and bracket of model of boring of clamping apparatus body install boring to cover with Yu An, assure the positional precision that is fastened by treatment aperture, can bear the action of cutting force. CNC Milling