Clamping device and cutting tool
AssigneeCERATIZIT Luxembourg S.a.r.l.
InventorJonathan Marbehant
Life of this patent
Estimating the term…
Abstract
A clamping device is configured to clamp a cutting insert onto a holder of a cutting tool. The clamping device contains a clamping bolt and a locking bolt, wherein the clamping bolt is configured to be inserted into each of the cutting insert and the holder. The locking bolt is configured to be inserted into the holder, such that the locking bolt pre-strains the clamping bolt into clamping the cutting insert onto the holder. The clamping bolt is configured rotatable about a longitudinal clamping axis of the clamping bolt relative to each of the cutting insert and the locking bolt, such that the clamping bolt wedge engages with the locking bolt during a clamping bolt rotation about the longitudinal clamping axis.
Claims12
A clamping device for clamping a cutting insert onto a holder of a cutting tool, the clamping device comprising:
- a clamping bolt being inserted into the cutting insert and the holder;
- a locking bolt being inserted into the holder, such that said locking bolt pre-strains said clamping bolt into clamping the cutting insert onto the holder, said clamping bolt being configured rotatable about a longitudinal clamping axis of said clamping bolt relative to each of the cutting insert and said locking bolt, such that said clamping bolt wedge engages with said locking bolt during a clamping bolt rotation about the longitudinal clamping axis and such that said clamping bolt is kept pre-strained during the clamping bolt rotation;
- said clamping bolt including a coolant channel formed therein and configured to be in fluid communication with a coolant supply of the holder and configured to guide coolant from the coolant supply to a free-standing cutting edge of the cutting insert;
- and
- said clamping bolt containing a wedge body and a head body, said wedge body tapering along the longitudinal clamping axis towards said head body, said head body configured for engagement with the cutting insert, and said clamping bolt rotation amounting to at least 45°.
A clamping device for clamping a cutting insert onto a holder of a cutting tool, the clamping device comprising:
- a clamping bolt being inserted into the cutting insert and the holder;
- a locking bolt being inserted into the holder, such that said locking bolt pre-strains said clamping bolt into clamping the cutting insert onto the holder, said clamping bolt being configured rotatable about a longitudinal clamping axis of said clamping bolt relative to each of the cutting insert and said locking bolt, such that said clamping bolt wedge engages with said locking bolt during a clamping bolt rotation about the longitudinal clamping axis and such that said clamping bolt is kept pre-strained during the clamping bolt rotation;
- said clamping bolt including a coolant channel formed therein and configured to be in fluid communication with a coolant supply of the holder and configured to guide coolant from the coolant supply to a free-standing cutting edge of the cutting insert;
- the longitudinal clamping axis running centrally through said clamping bolt;
- a longitudinal locking axis running longitudinally and centrally through said locking bolt;
- and
- the longitudinal clamping axis being skewedly oriented with respect to the longitudinal locking axis.
A milling tool, comprising:
- a holder;
- a cutting insert;
- and
- a clamping device for clamping the cutting insert onto the holder of the milling tool, the clamping device comprising:
- a clamping bolt being inserted into the cutting insert and the holder;
- a locking bolt being inserted into the holder, such that said locking bolt pre-strains said clamping bolt into clamping the cutting insert onto the holder, said clamping bolt being configured rotatable about a longitudinal clamping axis of said clamping bolt relative to each of the cutting insert and said locking bolt, such that said clamping bolt wedge engages with said locking bolt during a clamping bolt rotation about the longitudinal clamping axis and such that said clamping bolt is kept pre-strained during the clamping bolt rotation;
- and
- said clamping bolt including a coolant channel formed therein and configured to be in fluid communication with a coolant supply of the holder and configured to guide coolant from the coolant supply to a free-standing cutting edge of the cutting insert;
- and
- said clamping bolt being inserted into said holder and said cutting insert, and said locking bolt being inserted into said holder, such that said clamping bolt wedge engages with said locking bolt during the clamping bolt rotation about the longitudinal clamping axis and such that said clamping bolt is kept pre-strained during the clamping bolt rotation.
Dependencies are inferred from the claim text.