BORING BAR Russian patent published in 2005 - IPC

Abstract RU 2252841 C1

FIELD: metal working, boring precise openings.

SUBSTANCE: boring bar includes housing divided by means of groove by rigid and movable portions, rough adjustment screw resting upon supporting surface. Cutting member is mounted in seat of movable portion. In order to enlarge range of bored diameters and to provide easy tuning by precise dimensions, boring bar includes additional screw with cone surface and movable portion has inclined surface engaging with cone surface. Additional screw may be mounted inside rough adjustment screw. Thread pitches of additional screw and rough-adjustment screw may be different by value or sign. Housing may have supporting surface for limiting movement of rough-adjustment screw. Additional screw may have stop surface engaging with movable portion. Boring bar may have one more screw for providing wide range of tuning.

EFFECT: enlarged range of bored diameters, simplified tuning by precise dimensions.

7 cl, 2 dwg

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RU 2 252 841 C1

Authors

Ukrazhenko K.A.

Ukrazhenko O.K.

Dates

2005-05-27—Published

2004-04-13—Filed