公开(公告)号：EP2205385A1

公开(公告)日：2010-07-14

申请号：EP08834388.4

申请日：2008-09-25

申请人： Robert Bosch GmbH

发明人： DOST, Hagen, Walter ,  MCAULIFFE, Patrick, Michael ,  IBARRA, Javier ,  SOCHA, Alexander, Daniel

IPC分类号： B23B51/00

CPC分类号： B23B51/02 ,  B23B51/08 ,  B23B2226/61 ,  B23B2251/14 ,  B27G15/00 ,  Y10T408/899 ,  Y10T408/90 ,  Y10T408/9065 ,  Y10T408/9097

摘要： A tool bit providing a combined drill bit and reamer is disclosed herein. The tool bit comprises an axial bit shaft including a bore end and a shank end. At least one helical land portion is provided on the bit shaft. The at least one helical land portion includes a cutting edge and a trailing edge. At least one reamer blade is provided on the helical land portion at the bore end of the bit shaft. The at least one reamer blade includes a substantially axial cutting edge. A tip arrangement is also included on the bore end of the bit shaft. The tip arrangement includes a center blade positioned between peripheral cutting blades.

公开(公告)号：EP2205385B1

公开(公告)日：2017-03-15

申请号：EP08834388.4

申请日：2008-09-25

申请人： Robert Bosch GmbH

发明人： DOST, Hagen, Walter ,  MCAULIFFE, Patrick, Michael ,  IBARRA, Javier ,  SOCHA, Alexander, Daniel

IPC分类号： B23B51/00

CPC分类号： B23B51/02 ,  B23B51/08 ,  B23B2226/61 ,  B23B2251/14 ,  B27G15/00 ,  Y10T408/899 ,  Y10T408/90 ,  Y10T408/9065 ,  Y10T408/9097