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.
Claims37
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 rotable 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);
- 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);
- 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);
- 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);
- 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.
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 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);
- 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).
Dependencies are inferred from the claim text.