Integration instrument is salvaged in reaming

The utility model discloses an integration instrument is salvaged in reaming, axially extending bore's tool body is seted up including the center, tool body includes top connection, thread making salvage portion and reamer part that top -down connected gradually, wherein, the external diameter top -down of thread making salvage portion is along crescent, makes outside wall institute one -tenth tapering be 1: 15~1: 20, processing has the triangle -shaped external screw thread on the inner wall of thread making salvage portion, all there is wolfram steel fragment layer along the circumferencial direction build -up welding on the outer wall of reamer part bottom, this integration instrument is salvaged in reaming simple structure, it is continued to use habitual die nipple mode and salvages, and easy and simple to handle, back -off success rate height is applied to and is salvaged the great fish of external diameter, and one time reaming, thread making, fishing operation are accomplished to the brill, need not t