US 10,569,346 B2Granted

Cutting head and rotary cutting tool having same releasably clamped to a shank via a locating pin

AssigneeIscar, Ltd.

InventorsGil Hecht, David Ben Harouche

Life of this patent

Estimating the term…

Abstract

A rotary cutting tool includes a cutting head and a tool shank, each having an axial abutment surface and a plurality of drive surfaces. One of the two includes a locating pin, while the other includes a pin receptacle and at least one clamping through bore that opens out to the pin receptacle. The locating pin is received into the pin receptacle. The cutting head and tool shank are releasably clamped together by at least one clamping member that passes through the at least one clamping through bore and acts on the locating pin so that the drive surfaces and the axial abutment surfaces on each part abut each other.

Claims42

Dependent claims

A rotary cutting tool (20,120), having a tool central axis (A) that defines opposite forward and rearward directions (DF, DR) and about which the rotary cutting tool (20,120) is rotatable in a rotational direction (R), the rotary 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), the first head end surface (34a) comprising a plurality of female members (54) recessed therein;
a head axial abutment surface (66) located on the first head end surface (34a);
a plurality of head driven surfaces (52) circumferentially spaced apart from each other and radially inwardly spaced apart from the head peripheral surface (36), the head driven surfaces (52) facing generally in a first circumferential direction (C1) which is opposite to the rotational direction (R), each head driven surface (52) located in a respective one of the plurality of female members (54);
and
at least one cutting insert (26) releasably attached to the cutting head (22, 122);
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), the first shank end surface (76a) comprising a plurality of male members (90) projecting therefrom, each male member (90) being integrally formed with the tool shank (24) to have unitary one-piece construction therewith;
a shank axial abutment surface (102) located on the first shank end surface (76a);
and
a plurality of shank driving surfaces (88) circumferentially spaced apart from each other and radially inwardly spaced apart from the shank peripheral surface (78), the shank driving surfaces (88) facing generally in a second circumferential direction (C2) which is opposite the first circumferential direction (C1), each shank driving surface (88) being located on a respective one of the plurality of male members (90);
a locating pin (38) projecting from one of the first head end surface (34a) and the first shank end surface (76a), the locating pin (38) having at least one peripherally disposed clamping recess (46);
a pin receptacle (80) recessed in the other of the first head end surface (34a) and the first shank end surface (76a);
and
at least one clamping through bore (84) formed in whichever one of the head peripheral surface (36) and the shank peripheral surface (78) the pin receptacle (80) is recessed, so that the clamping through bore (84) opens out to the pin receptacle (80), wherein:
the rotary cutting tool (20, 120) is adjustable between a released position and a locked position, and in the locked position:
the locating pin (38) is received into the pin receptacle (80);
and
at least one clamping member (28) passes through the at least one clamping through bore (84) and acts on the at least one clamping recess (46) of the locating pin (38), so that:
each shank driving surface (88) abuts a corresponding one of the head driven surfaces (52);
the head axial abutment surface (66) abuts the shank axial abutment surface (102);
and
the cutting head (22, 122) and tool shank (24, 124) are releasably clamped together.

20 more elements

A cutting head (22, 122), having a head central axis (B) that defines opposite forward and rearward directions (DF, DR) and about which the cutting head (22,122) is rotatable in a rotational direction (R), 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), the first head end surface (34a) comprising a plurality of female members (54) recessed therein, each female member (54) having a non-circular radial cross-section;
a head axial abutment surface (66) located on the head end surface (34a);
a plurality of head driven surfaces (52) circumferentially spaced apart from each other and radially inwardly spaced apart from the head peripheral surface (36), the head driven surfaces (52) facing generally in a first circumferential direction (C1) which is opposite to the rotational direction (It), each head driven surface (52) located in a respective one of the plurality of female members (54);
at least one cutting insert (26) releasably attached to the cutting head (22, 122);
and
either:
a locating pin (38) projecting from the first head end surface (34a), the locating pin (38) having at least one peripherally disposed clamping recess (46);
or
a pin receptacle (80) recessed in the first head end surface (34a) and at least one clamping through bore (84) formed in the head peripheral surface (36) and opening out to the pin receptacle (80).

6 more elements

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 head end surface (34a);
and
a plurality of head driven surfaces (52) circumferentially spaced apart from each other and radially inwardly spaced apart from the head peripheral surface (36), the head driven surfaces (52) facing generally in a first circumferential direction (C1) which is opposite to the rotational direction (R);
wherein the cutting head (22, 122) has either:
a centrally disposed locating pin (38) projecting from the first head end surface (34a), the locating pin (38) having at least one peripherally disposed clamping recess (46);
or
a centrally disposed pin receptacle (80) recessed in the first head end surface (34a) and at least one clamping through bore (84) formed in the head peripheral surface (36) and opening out to the pin receptacle (80);
and
wherein the first head end surface (34a) comprises either:
a plurality of female members (54) recessed therein, each female member (54) having a non-circular radial cross-section, with each head driven surface (52) located in a respective one of the plurality of female members (54);
or
a plurality of male members (90) projecting therefrom, each male member (90) having a non-circular radial cross-section, with each head driven surface (52) located on a respective one of the plurality of male members (90).

10 more elements

A tool shank head (24, 124), having a shank central axis (C) that defines opposite forward and rearward directions (DF, DR) and about which the cutting head (22,122) is rotatable in a rotational direction (R), the 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 102) located on the first shank end surface (76a);
and
a plurality of shank driving surfaces (88) circumferentially spaced apart from each other and radially inwardly spaced apart from the shank peripheral surface (78), the shank driving surfaces (88) facing generally in the rotational direction (R);
wherein the tool shank (24, 124) has either:
a centrally disposed locating pin (38) projecting from the first shank end surface (76a), the locating pin (38) having at least one peripherally disposed clamping recess (46);
or
a centrally disposed pin receptacle (80) recessed in the first shank end surface (76a) and at least one clamping through bore (84) formed in the head peripheral surface (36) and opening out to the pin receptacle (80);
and
wherein the first shank end surface (76a) comprises either:
a plurality of female members (54) recessed therein, each female member (54) having a non-circular radial cross-section, with each shank driving surface (88) located in a respective one of the plurality of female members (54);
or
a plurality of male members (90) projecting therefrom, each male member (90) having a non-circular radial cross-section, with each shank driving surface (88) located on a respective one of the plurality of male members (90).

10 more elements

Dependencies are inferred from the claim text.

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Abstract

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), the first head end surface (34a) comprising a plurality of female members (54) recessed therein;
a head axial abutment surface (66) located on the first head end surface (34a);
a plurality of head driven surfaces (52) circumferentially spaced apart from each other and radially inwardly spaced apart from the head peripheral surface (36), the head driven surfaces (52) facing generally in a first circumferential direction (C1) which is opposite to the rotational direction (R), each head driven surface (52) located in a respective one of the plurality of female members (54);
and
at least one cutting insert (26) releasably attached to the cutting head (22, 122);
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), the first shank end surface (76a) comprising a plurality of male members (90) projecting therefrom, each male member (90) being integrally formed with the tool shank (24) to have unitary one-piece construction therewith;
a shank axial abutment surface (102) located on the first shank end surface (76a);
and
a plurality of shank driving surfaces (88) circumferentially spaced apart from each other and radially inwardly spaced apart from the shank peripheral surface (78), the shank driving surfaces (88) facing generally in a second circumferential direction (C2) which is opposite the first circumferential direction (C1), each shank driving surface (88) being located on a respective one of the plurality of male members (90);
a locating pin (38) projecting from one of the first head end surface (34a) and the first shank end surface (76a), the locating pin (38) having at least one peripherally disposed clamping recess (46);
a pin receptacle (80) recessed in the other of the first head end surface (34a) and the first shank end surface (76a);
and
at least one clamping through bore (84) formed in whichever one of the head peripheral surface (36) and the shank peripheral surface (78) the pin receptacle (80) is recessed, so that the clamping through bore (84) opens out to the pin receptacle (80), wherein:
the rotary cutting tool (20, 120) is adjustable between a released position and a locked position, and in the locked position:
the locating pin (38) is received into the pin receptacle (80);
and
at least one clamping member (28) passes through the at least one clamping through bore (84) and acts on the at least one clamping recess (46) of the locating pin (38), so that:
each shank driving surface (88) abuts a corresponding one of the head driven surfaces (52);
the head axial abutment surface (66) abuts the shank axial abutment surface (102);
and
the cutting head (22, 122) and tool shank (24, 124) are releasably clamped together.

20 more elements