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US 12,649,188 B2Granted
Cutting head having rotationally asymmetric coupling pin, tool shank and cutting tool
AssigneeIscar, Ltd.
InventorsMartin Ulrich Zettler, Nikolaos Poussios
Life of this patent
Estimating the term…
Abstract
A cutting tool includes a cutting head and a tool shank, each having an axial abutment surface. One of the two includes a coupling pin, while the other includes a pin receptacle and a clamping through bore that opens out to the pin receptacle. The coupling pin has an engagement groove and the pin receptacle has an engagement ridge. The coupling pin is received into the pin receptacle. The cutting head and tool shank are releasably attached together by a fastening member that passes through the clamping through bore and acts on the coupling pin so that the engagement groove abuts the engagement ridge and the axial abutment surfaces on each part abut each other.
Claims24
A cutting tool (20,120), having a tool central axis (A) that defines opposite forward and rearward directions (DF, DR), the cutting tool (20,120) including:
- a cutting head (22, 122) comprising:
- a head peripheral surface (36) extending circumferentially about the tool central axis (A) and forming a boundary of a rearwardly facing first head end surface (34a);
- a head axial abutment surface (66) located on the first head end surface (34a), the head abutment surface (66) being planar and orthogonal to the head central axis (B);
- and
- an insert pocket (27);
- a tool shank (24, 124) comprising:
- a shank peripheral surface (78) extending circumferentially about the tool central axis (A) and forming a boundary of a forwardly facing first shank end surface (76a);
- a shank axial abutment surface (104) located on the first shank end surface (76a);
- and
- a coupling pin (38) projecting from one of the first head end surface (34a) and the first shank end surface (76a), the coupling pin (38) comprising:
- a pin outer peripheral surface (44) extending about a pin central axis (D);
- a pin vertical axis (VP) which is perpendicular to, and intersects, the pin central axis (D) to thereby define a pin vertical plane (PVP);
- a pin engagement groove (52) recessed in the pin outer peripheral surface (44) and extending from a pin free end (41) towards a pin fixed end (40) along a groove longitudinal axis (G);
- and
- a clamping recess (58) recessed in the pin outer peripheral surface (44) opposite the pin engagement groove (52) about the pin central axis (D);
- a pin receptacle (80) recessed in the other of the first head end surface (34a) and the first shank end surface (76a), the pin receptacle (80) comprising:
- a receptacle inner peripheral surface (86) extending about a receptacle central axis (E);
- a receptacle vertical axis (VR) which is perpendicular to, and intersects, the receptacle central axis (E) to thereby define a receptacle vertical plane (RVP);
- and
- a receptacle engagement ridge (90) protruding from the receptacle inner peripheral surface (86) and extending from a receptacle open end (82) towards a receptacle bottom end (84) along a ridge longitudinal axis (R);
- and
- a clamping through bore (96) formed in whichever one of the head peripheral surface (36) and the shank peripheral surface (78) the pin receptacle (80) is recessed, and opening out to the pin receptacle (80) at a receptacle through bore opening (98) located opposite the receptacle engagement ridge (90) about the receptacle central axis (E), wherein:
- the cutting tool (20, 120) is adjustable between a released position and a locked position, and in the locked position:
- the coupling pin (38) is received into the pin receptacle (80);
- and
- a fastening member (28) passes through the clamping through bore (96) and acts on the clamping recess (58) of the coupling pin (38), so that:
- the pin engagement groove (52) abuts the receptacle engagement ridge (90);
- the head axial abutment surface (66) abuts the shank axial abutment surface (104);
- and
- the cutting head (22, 122) and tool shank (24, 124) are releasably attached together.
27 more elements
A cutting head (22, 122), having a head central axis (B) that defines opposite forward and rearward directions (DF, DR), the cutting head (22, 122) comprising:
- a head peripheral surface (36) extending circumferentially about the head central axis (B) and forming a boundary of a rearwardly facing first head end surface (34a);
- a head axial abutment surface (66) located on the first head end surface (34a), the head abutment surface (66) being planar and orthogonal to the head central axis (B);
- an insert pocket (27);
- and
- either:
- a coupling pin (38) projecting from the first head end surface (34a), the coupling pin (38) comprising:
- a pin outer peripheral surface (44) extending about a pin central axis (D);
- a pin vertical axis (VP) which is perpendicular to, and intersects, the pin central axis (D) to thereby define a pin vertical plane (PVP);
- a pin engagement groove (52) recessed in the pin outer peripheral surface (44) and extending from a pin free end (41) towards a pin fixed end (40) along a groove longitudinal axis (G);
- and
- a clamping recess (58) recessed in the pin outer peripheral surface (44) opposite the pin engagement groove (52) about the pin central axis (D);
- or;
- a pin receptacle (80) recessed the first head end surface (34a), the pin receptacle (80) comprising:
- a receptacle inner peripheral surface (86) extending about a receptacle central axis (E);
- a receptacle vertical axis (VR) which is perpendicular to, and intersects, the receptacle central axis (E) to thereby define a receptacle vertical plane (RVP);
- and
- a receptacle engagement ridge (90) protruding from the receptacle inner peripheral surface (86) and extending from a receptacle open end (82) towards a receptacle bottom end (84) along a ridge longitudinal axis (R);
- and
- a clamping through bore (96) recessed in the head peripheral surface (36) and opening out to the pin receptacle (80) at a receptacle through bore opening (98) located opposite the receptacle engagement ridge (90) about the receptacle central axis (E).
16 more elements
Dependencies are inferred from the claim text.