Side milling cutter
A side milling cutter includes a main body extending along an axis from a first end with an interface for connection to a rotational drive to a free second end, receiving a bearing face for a disc-shaped cutter holder. The cutter holder is fastened to the second end and supported with a first main surface, facing the main body, on the bearing face, having an outer circumference projecting radially from the main body and a central through opening penetrating the cutter holder axially. Coolant feed channels feeding coolant to the second end are in the main body. Coolant distributing channels feeding coolant to the outer circumference of the cutter holder are in the cutter holder. At least two coolant distributing channels branch off from a common coolant distributing chamber between the main body and the cutter holder and into which at least two of the coolant feed channels open.
1 . A side milling cutter, comprising:
a main body extending along a predefined rotational axis from a first end having an interface for connection to a rotational drive to a free second end having a bearing face;
a disc-shaped cutter holder fastened to said second end and having a first main surface facing said main body and being supported on said bearing face, said disc-shaped cutter holder having a second main surface lying opposite said first main surface, said disc-shaped cutter holder having an outer circumference projecting radially from said main body, and said disc-shaped cutter holder having a central through opening penetrating said disc-shaped cutter holder axially;
a plurality of coolant feed channels configured in said main body for feeding coolant to said second end of said main body;
a plurality of coolant distributing channels configured in said disc-shaped cutter holder for feeding coolant to said outer circumference of said disc-shaped cutter holder, said coolant distributing channels having a closed configuration toward said first main surface and toward said second main surface, and said coolant distributing channels each having:
a first channel portion running in an interior of said disc-shaped cutter holder,
at least one outlet opening on said outer circumference of said disc- shaped cutter holder, and
an inlet portion being open towards said through opening and towards said first main surface and extending only over a part of a thickness of said disc-shaped cutter holder in a region of said through opening; and
a common coolant distributing chamber configured between said main body and said disc-shaped cutter holder, at least two of said plurality of coolant distributing channels branching off from said common coolant distributing chamber, and at least two of said plurality of coolant feed channels opening into said common coolant distributing chamber.
2 . The side milling cutter according to claim 1 , wherein said common coolant distributing chamber extends annularly around said rotational axis.
3 . The side milling cutter according to claim 1 , wherein said coolant distributing channels each having a connecting portion connecting said inlet portion to said first channel portion, said connecting portion having a closed configuration in a direction toward said through opening and relative to said second main surface.
4 . The side milling cutter according to claim 1 , wherein said inlet portion, being open towards said through opening, has an axial height being at most equal to one-third of said thickness of said disc-shaped cutter holder at said through opening.
5 . The side milling cutter according to claim 1 , wherein said coolant distributing chamber has a cutter holder-side portion formed by depressions in said disc-shaped cutter holder, said depressions adjoining said first main surface and said through opening and extending between said inlet portions of respective said coolant distributing channels.
6 . The side milling cutter according to claim 5 , wherein said cutter holder-side portion of said coolant distributing chamber has an axial height being equal to at most one-third of said thickness of said disc-shaped cutter holder at said through opening.
7 . The side milling cutter according to claim 1 , which further comprises a centering pin projecting axially from said bearing surface at said second end of said main body, said centering pin having an outer contour, and said through opening in said disc-shaped cutter holder being adapted to said outer contour of said centering pin.
8 . The side milling cutter according to claim 7 , wherein said centering pin has a through bore extending through said centering pin and being open at said second end.
9 . The side milling cutter according to claim 7 , wherein said centering pin has an outer circumferential surface, and said through opening of said disc-shaped cutter holder has an inner circumferential surface bearing sealingly against said outer circumferential surface of said centering pin.
10 . The side milling cutter according to claim 7 , wherein said plurality of coolant feed channels open radially outside said centering pin into said common coolant distributing chamber.
11 . The side milling cutter according to claim 7 , wherein said coolant distributing chamber has a first main body-side portion formed by a groove running around said centering pin and having a deepened configuration relative to said bearing surface.
12 . The side milling cutter according to claim 11 , wherein said coolant distributing chamber has a second main body-side portion formed by a circumferential recess formed on said centering pin.
13 . The side milling cutter according to claim 1 , which further comprises replaceable cutting tool inserts, said disc-shaped cutter holder having a plurality of seats distributed over said circumference of said disc- shaped cutter holder being configured for receiving said replaceable cutting tool inserts.
14 . The side milling cutter according to claim 13 , wherein said seats configured to receive said replaceable cutting tool inserts cause said replaceable cutting tool inserts to each project axially on both sides from said disc-shaped cutter holder.
15 . The side milling cutter according to claim 13 , wherein said plurality of replaceable cutting tool inserts are fastened to said seats and form a region of the side milling cutter projecting furthest axially from said main body.