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US 6,076,999 AGranted
Boring bar
AssigneeSandvik Aktiebolag
InventorsAnna Hedberg, Eric Tjernstrom
Life of this patent
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Abstract
A boring bar includes a shaft and a head which carries a cutting insert. The head includes a conical protrusion which fits in a correspondingly shaped recess of the shaft and is secured therein by an adhesive joint in order to damp vibrations.
Claims4
A boring bar comprising:
- a shaft portion having a front end in which a forwardly open recess is disposed, the recess defined by a rearwardly narrowing first wall;
- and
- a bar head including a rearwardly extending projection disposed in the recess and including a second wall narrowing rearwardly in a complementary manner to the first wall;
- the first and second walls being glued to one another by a layer of vibration dampening adhesive having a thickness in the range of 0.05 and 1.5 mm;
- the bar head carrying a cutting edge structure arranged non-symmetrically to a longitudinal center axis of the shaft portion;
- wherein the first and second walls are of conical shape.
3 more elements
Dependencies are inferred from the claim text.