METHOD FOR PROCESSING OF PART WITH PARALLEL DEEP HOLES Russian patent published in 2010 - IPC B23B35/00 

FIELD: technological processes.

SUBSTANCE: method includes operations of drilling parallel deep holes according to conductor or to coordinates and installation of aligning plugs in drilled holes. In order to produce holes with ratio of length to diametre of more than five, previously part is cut in parts across location of future parallel deep holes, afterwards drilled on both sides in each of part sections in accordance with required location of hole. Then edges for welded joint are mechanically processed to align one part relative to the other. Then parts are assembled with drilled holes, and aligning plugs are installed in them. At the same time depending on value of hole, aligning plugs are arranged either in the form of bushings arranged at the joint between connected parts and having length exceeding dimensions of welded seam, or in the form of bosses placed at the joint between connected parts, having holes at the ends to align drill and length, exceeding dimensions of welded seam. Afterwards connected sections of part are welded together with aligning plugs. Then required thermal processing of part is carried out, afterwards aligning plugs are drilled to get required size of deep holes.

EFFECT: method for drilling of parallel deep holes.

4 dwg