CYLINDRICAL FLOW-TAPPING HOLE UNIT COMPRISING A DRIVE AND A THUS ASSOCIATED TOOL AND THE THUS PRODUCABLE FLOW-TAPPING HOLES

摘要

The invention relates to a flow-tapping hole unit comprising a housing (5) arranged in a frame (1) and a clamp (1'). A workpiece (3) which is to be machined can be tensioned between the frame (1) and the clamp (1'). Said flow-tapping hole unit is characterised by the fact that an advancing unit (6) is displacably arranged in the housing (5), said advancing unit containing a drive (7) which drives, by means of a pump (22), a tool receiving unit (10) and mediums which pass through at least one valve (21), and at least one speed increasing ratio i < 1, and a gearbox having a speed ratio, and simultaneously applies an advancing force (Fv) to the advancing unit (6).