Cutting tool part having an additively manufactured cutting portion with integrally formed guide pads and method of manufacturing same
AssigneeIscar, Ltd.
InventorsMartin Ulrich Zettler, Nikolaos Poussios, Henner Michael Dziubas
Life of this patent
Estimating the term…
Abstract
A cutting tool part includes a cutting portion. The cutting tool part further includes a plurality of guide pads projecting radially outwards from the cutting portion. At least the cutting portion and the plurality of guide pads are made through additive manufacturing, the plurality of guide pads being integrally formed with the cutting portion in a unitary one-piece construction. A rotary cutting tool is provided having a cutting insert releasably attached to the cutting tool part.
Claims36
A cutting tool part (22), configured for rotation about a tool part longitudinal axis (B), the cutting tool part (22) having a forward direction (DF) and a rearward direction (DR), opposite the forward direction (DF), that extend in directions parallel to the tool part longitudinal axis (B), the cutting tool part (22) having a rotational preceding direction (DP) about the tool part longitudinal axis (B) that corresponds with the cutting direction and a rotational succeeding direction (DS) about the tool part longitudinal axis (B) that is opposite the rotational preceding direction (DP), the cutting tool part (22) comprising:
- a tool part forward end surface (28), a tool part rearward end surface (30) and a tool part peripheral surface (36) extending therebetween, the tool part peripheral surface (36) extending about the tool part longitudinal axis (B);
- an additively manufactured cutting portion (38) comprising a cutting portion material and located at a forward end (32) of the cutting tool part (22), the cutting portion (38) comprising a cutting portion peripheral surface (40) formed from the tool part peripheral surface (36);
- a shank portion (46) extending rearwardly from the cutting portion (38);
- a plurality of additively manufactured guide pads (56), each guide pad comprising a guide pad material and projecting from the cutting portion peripheral surface (40), each guide pad (56) comprising:
- a central radially outward facing pad contact surface (62);
- pad end surfaces (64) extending from the pad contact surface (62) to the cutting portion peripheral surface (40) at opposite axial ends of the guide pad (56), the pad contact surface (62) having a pad contact axial height (H) measured in a direction of the tool part longitudinal axis (B) between the pad end surfaces (64), the guide pad (56) spaced apart from the tool part forward end surface (28) by a pad distance (d) that is greater than the pad contact axial height (H);
- and
- an insert pocket (42);
- wherein:
- the plurality of guide pads (56) are integrally formed with the cutting portion in a unitary monolithic construction.
A cutting tool part (22), configured for rotation about a tool part longitudinal axis (B), the cutting tool part (22) having a forward direction (DF) and a rearward direction (DR), opposite the forward direction (DF), that extend in directions parallel to the tool part longitudinal axis (B), the cutting tool part (22) having a rotational preceding direction (DP) about the tool part longitudinal axis (B) that corresponds with the cutting direction and a rotational succeeding direction (DS) about the tool part longitudinal axis (B) that is opposite the rotational preceding direction (DP), the cutting tool part (22) comprising:
- a tool part forward end surface (28), a tool part rearward end surface (30) and a tool part peripheral surface (36) extending therebetween, the tool part peripheral surface (36) extending about the tool part longitudinal axis (B);
- an additively manufactured cutting portion (38) comprising a cutting portion material and located at a forward end (32) of the cutting tool part (22), the cutting portion (38) comprising a cutting portion peripheral surface (40) formed from the tool part peripheral surface (36);
- a shank portion (46) extending rearwardly from the cutting portion (38);
- and
- a plurality of additively manufactured guide pads (56), each guide pad comprising a guide pad material and projecting from the cutting portion peripheral surface (40), each guide pad (56) comprising:
- a central radially outward facing pad contact surface (62);
- pad end surfaces (64) extending from the pad contact surface (62) to the cutting portion peripheral surface (40) at opposite axial ends of the guide pad (56), the pad contact surface (62) having a pad contact axial height (H) measured in a direction of the tool part longitudinal axis (B) between the pad end surfaces (64), the guide pad (56) spaced apart from the tool part forward end surface (28) by a pad distance (d) that is greater than the pad contact axial height (H);
- wherein:
- the plurality of guide pads (56) are integrally formed with the cutting portion in a unitary monolithic construction, and
- wherein the cutting portion (38) comprises:
- a plurality of angularly spaced apart flutes (44) recessed in the cutting portion peripheral surface (40);
- and
- a plurality of angularly spaced apart lands (50), each land (50) extending between an associated rotationally preceding flute (44P) and an associated rotationally succeeding flute (44S), the associated rotationally preceding flute (44) being rotationally forward of the associated rotationally succeeding flute (44S);
- wherein:
- each land (50) has a respective guide pad (56) formed thereon;
- and
- for any given land (50a), the respective guide pad (56) is spaced apart from the given land's associated rotationally preceding flute (44P).
A cutting tool part (22), configured for rotation about a tool part longitudinal axis (B), the cutting tool part (22) having a forward direction (DF) and a rearward direction (DR), opposite the forward direction (DF), that extend in directions parallel to the tool part longitudinal axis (B), the cutting tool part (22) having a rotational preceding direction (DP) about the tool part longitudinal axis (B) that corresponds with the cutting direction and a rotational succeeding direction (DS) about the tool part longitudinal axis (B) that is opposite the rotational preceding direction (DP), the cutting tool part (22) comprising:
- a tool part forward end surface (28), a tool part rearward end surface (30) and a tool part peripheral surface (36) extending therebetween, the tool part peripheral surface (36) extending about the tool part longitudinal axis (B);
- an additively manufactured cutting portion (38) comprising a cutting portion material and located at a forward end (32) of the cutting tool part (22), the cutting portion (38) comprising a cutting portion peripheral surface (40) formed from the tool part peripheral surface (36);
- a shank portion (46) extending rearwardly from the cutting portion (38);
- a plurality of angularly spaced apart flutes (44) recessed in the cutting portion peripheral surface (40);
- a plurality of guide pads (56) integrally formed with the cutting portion in a unitary monolithic construction;
- a plurality of angularly spaced apart lands (50), each land (50) extending between an associated rotationally preceding flute (44P) and an associated rotationally succeeding flute (44S) of the plurality of angularly spaced apart flutes (44), the associated rotationally preceding flute (44) being rotationally forward of the associated rotationally succeeding flute (44S), each land (50) having a respective guide pad (56) formed thereon spaced apart from the associated rotationally preceding flute (44P);
- each guide pad comprising a guide pad material projecting from the land (50);
- and
- a coating layer (68) formed on the plurality of guide pads (56), the coating layer (68) is a PVD coating layer.
Dependencies are inferred from the claim text.