Boring tool comprising a replaceable cutting insert which is secured against detaching
AssigneeDr. Joerg Guehring
InventorArmin Schulz
Life of this patent
Estimating the term…
Abstract
The invention relates to a boring tool comprising a retaining device which extends in the direction of a longitudinal axis and which comprises a shaft section and a head section. A groove which runs orthogonal in relation to the longitudinal axis and in the direction of a transversal axis is configured in said head section. The boring tool also comprises a cutting insert which is inserted in the groove, and comprises a clamping element. Said clamping element passes through a receiving boring configured in the cutting insert and through a boring configured in at least one of the groove limbs. In addition, the clamping element clamps the cutting insert against the at least one groove limb.
Claims15
A boring tool comprising:
- a holder which extends in the direction of a longitudinal axis and which has a holder shank portion and a head portion, in which there is formed a groove running in the direction of a transverse axis orthogonal to the longitudinal axis so as to form first and second groove branches on the head portion,
- a cutting insert inserted in the groove and
- a clamping element, which passes through a receiving bore formed in the cutting insert and a bore formed in at least one of the groove branches, and which clamps the cutting insert against said first groove branches,
- wherein the central axis of the bore in said first groove branch is offset relative to the central axis of the receiving bore in the cutting insert, and
- wherein the clamping element and the cutting insert form a wedge-face mechanism such that the cutting insert in an assembled condition of the boring tool is pressed in the direction of the longitudinal axis against a first stop face and in the direction of the transverse axis against a second stop face, wherein the cutting insert is provided with an extension which runs in the direction of the longitudinal axis and which reaches into a recess which extends from a groove base face of the groove in the direction of the longitudinal axis to the shank portion, and in which there is provided the second stop face, and
- the second stop face as well as a side face on the extension of the cutting insert bearing against the second stop face are formed as one of plane faces and curved faces which are parallel relative to the longitudinal axis.
Dependencies are inferred from the claim text.