Tool holder having simultaneous radially adjustable insert cartridges and rotary cutting tool

A tool holder (22) configured for rotation about a holder central axis (B) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS) with the preceding direction (DP) being a single cutting direction, the tool holder (22) comprising:

• a holder body (24) comprising a forwardly disposed forward body portion (32), the forward body portion (32) comprising a generally forward facing body forward surface (36) and a body peripheral surface (38) which extends about the holder central axis (B) and bounds the body forward surface (36), the body forward surface (36) comprising a plurality of body engagement surfaces (42);
• an adjustment sleeve (44) having a sleeve central axis (A), the adjustment sleeve (44) comprising:
• opposite forward and rearward sleeve end surfaces (46, 48) and a sleeve peripheral surface (50) extending therebetween;
• a sleeve through hole (52) comprising a sleeve through hole wall surface (54) which extends about the sleeve central axis (A) and connects the forward and rearward sleeve end surfaces (46, 48);
• and
• at least one sleeve adjustment groove (62) recessed in the forward sleeve end surface (46), any and all of the sleeve adjustment grooves (62) spiraling inward in a rotational sleeve direction (DRS) defined by one of the preceding and succeeding directions (DP, DS);
• and
• a plurality of insert cartridges (26), each insert cartridge (26) comprising:
• an insert pocket (30);
• a rearward facing cartridge rearward surface (66) comprising a cartridge engagement surface (72) which is mutually engaged with a respective one of said plurality of body engagement surface (42) so that the insert cartridge (26) is displaceable in opposite inward and outward adjustment directions (DI, DO);
• and
• at least one cartridge pin (78) projecting from the cartridge rearward surface (66),
• wherein:
• the adjustment sleeve (44) comprises a sleeve threaded through hole (56) opening out to the sleeve through hole wall surface (54) and the sleeve peripheral surface (50);
• the forward body portion (32) comprises an annular body securing groove (58) recessed in the body peripheral surface (38) and extending about the holder central axis (B);
• the adjustment sleeve (44) is releasably attached to the forward body portion (32) by a securing screw (60) located in the body securing groove (58) and threadingly engaged with the sleeve threaded through hole (56);
• the adjustment sleeve (44) is circumferentially disposed about the holder body (24), with the sleeve through hole wall surface (54) facing the body peripheral surface (38) so that the adjustment sleeve (44) is rotationally displaceable with respect to the forward body portion (32);
• at least one of the at least one cartridge pin (78) is located in a respective one of the sleeve adjustment grooves (62) defining at least one active cartridge pin (78a);
• and
• the tool holder (22) is adjustable between an inner adjusted position and an outer adjusted position upon rotation of the adjustment sleeve (44) about the holder axis (B) in the rotational sleeve direction (DRS);
• wherein
• in the inner adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective first radial pocket distance (R1);
• and
• in the outer adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective second radial pocket distance (R2), the second radial pocket distance (R2) being greater than the first radial pocket distance (R1).

A tool holder (22) configured for rotation about a holder central axis (B) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS) with the preceding direction (DP) being a single cutting direction, the tool holder (22) comprising:

• a holder body (24) comprising:
• a forwardly disposed forward body portion (32) having a generally forward facing body forward surface (36) comprising a plurality of circumferentially spaced apart body engagement surfaces (42) which define a plane perpendicular to said holder central axis (B), each body engagement surface comprising at least one engagement recess (74) and/or at least one engagement projection (76), with the body forward surface (36) being devoid of such engagement recesses (74) and/or engagement projections (76) in regions between the circumferentially spaced apart body engagement surfaces (42);
• and
• a body peripheral surface (38) which extends about the holder central axis (B) and bounds the body forward surface (36);
• an adjustment sleeve (44) having a sleeve central axis (A) and comprising:
• opposite forward and rearward sleeve end surfaces (46, 48) and a sleeve peripheral surface (50) extending therebetween;
• a sleeve through hole (52) comprising a sleeve through hole wall surface (54) which extends about the sleeve central axis (A) and connects the forward and rearward sleeve end surfaces (46, 48);
• and
• at least one sleeve adjustment groove (62), recessed in the forward sleeve end surface (46), and extending spirally inward for more than one turn of 360°;
• and
• a plurality of circumferentially spaced apart insert cartridges (26), each comprising:
• an insert pocket (30);
• opposite cartridge forward and rearward surfaces (64, 66), the cartridge rearward surface comprising a cartridge engagement surface (72) and at least one rearward projecting cartridge pin (78);
• and
• a cartridge peripheral surface (68) which extends between the cartridge forward and rearward surfaces (64, 66);
• wherein:
• the adjustment sleeve (44) is circumferentially disposed about the holder body (24), with the sleeve through hole wall surface (54) facing the body peripheral surface (38), the adjustment sleeve (44) being rotationally displaceable with respect to the forward body portion (32);
• each insert cartridge (26) is engaged to a respective one of the body engagement surfaces (42) and is configured to be slidingly displaced in opposite inward and outward adjustment directions (DI, DO), upon rotation of the adjustment sleeve (44) in opposite rotational directions, relative to the forward body portion (32);
• at least one of the at least one rearward projecting cartridge pin (78) of each insert cartridge (26) is located in the sleeve adjustment groove (62) defining at least one active cartridge pin (78a);
• and
• the tool holder (22) is adjustable between an inner adjusted position and an outer adjusted position;
• wherein
• in the inner adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective first radial pocket distance (R1);
• and
• in the outer adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective second radial pocket distance (R2), the second radial pocket distance (R2) being greater than the first radial pocket distance (R1).

A tool holder (22) configured for rotation about a holder central axis (B) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS) with the preceding direction (DP) being a single cutting direction, the tool holder (22) comprising:

• a holder body (24) comprising:
• a forwardly disposed forward body portion (32) having a generally forward facing body forward surface (36) comprising a plurality of circumferentially spaced apart body engagement surfaces (42);
• and
• a body peripheral surface (38) which extends about the holder central axis (B) and bounds the body forward surface (36);
• an adjustment sleeve (44) having a sleeve central axis (A) and comprising:
• opposite forward and rearward sleeve end surfaces (46, 48) and a sleeve peripheral surface (50) extending therebetween;
• a sleeve through hole (52) comprising a sleeve through hole wall surface (54) which extends about the sleeve central axis (A) and connects the forward and rearward sleeve end surfaces (46, 48);
• and
• at least one sleeve adjustment groove (62), recessed in the forward sleeve end surface (46), and extending spirally inward for more than one turn of 360°;
• and
• a plurality of circumferentially spaced apart insert cartridges (26), each comprising:
• an insert pocket (30);
• opposite cartridge forward and rearward surfaces (64, 66), the cartridge rearward surface comprising a cartridge engagement surface (72) and a plurality of rearward projecting cartridge pins (78);
• and
• a cartridge peripheral surface (68) which extends between the cartridge forward and rearward surfaces (64, 66);
• wherein:
• the plurality of insert cartridges (26) are not identical to one another;
• the cartridge pins (78) projecting from the cartridge rearward surface (66) of one of the plurality insert cartridges (26) project at locations different from the cartridge pins (78) belonging to other insert cartridges (26);
• the adjustment sleeve (44) is circumferentially disposed about the holder body (24), with the sleeve through hole wall surface (54) facing the body peripheral surface (38), the adjustment sleeve (44) being rotationally displaceable with respect to the forward body portion (32);
• each insert cartridge (26) is engaged to a respective one of the body engagement surfaces (42) and is configured to be slidingly displaced in opposite inward and outward adjustment directions (DI, DO), upon rotation of the adjustment sleeve (44) in opposite rotational directions, relative to the forward body portion (32);
• at least one of the plurality of rearward projecting cartridge pin (78) of each insert cartridge (26) is located in the sleeve adjustment groove (62) defining at least one active cartridge pin (78a);
• and
• the tool holder (22) is adjustable between an inner adjusted position and an outer adjusted position;
• wherein
• in the inner adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective first radial pocket distance (R1);
• and
• in the outer adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective second radial pocket distance (R2), the second radial pocket distance (R2) being greater than the first radial pocket distance (R1).

A tool holder (22) configured for rotation about a holder central axis (B) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS) with the preceding direction (DP) being a single cutting direction, the tool holder (22) comprising:

• a holder body (24) comprising a forwardly disposed forward body portion (32), the forward body portion (32) comprising a generally forward facing body forward surface (36) and a body peripheral surface (38) which extends about the holder central axis (B) and bounds the body forward surface (36), the body forward surface (36) being entirely perpendicular to the holder central axis (B) and comprising:
• a plurality of body engagement surfaces (42) which are circumferentially spaced apart from one another about the holder central axis (B), each body engagement surface comprising at least one engagement recess (74) and/or at least one engagement projection (76), with the body forward surface (36) being devoid of such engagement recesses (74) and/or engagement projections (76) in regions between the circumferentially spaced apart body engagement surfaces (42);
• an adjustment sleeve (44) having a sleeve central axis (A), the adjustment sleeve (44) comprising:
• opposite forward and rearward sleeve end surfaces (46, 48) and a sleeve peripheral surface (50) extending therebetween;
• a sleeve through hole (52) comprising a sleeve through hole wall surface (54) which extends about the sleeve central axis (A) and connects the forward and rearward sleeve end surfaces (46, 48);
• and
• at least one sleeve adjustment groove (62) recessed in the forward sleeve end surface (46), any and all of the sleeve adjustment grooves (62) spiraling inward in a rotational sleeve direction (DRS) defined by one of the preceding and succeeding directions (DP, DS);
• and
• a plurality of insert cartridges (26), each insert cartridge (26) comprising:
• an insert pocket (30);
• a rearward facing cartridge rearward surface (66) comprising a cartridge engagement surface (72) which is mutually engaged with a respective one of said plurality of body engagement surfaces (42) so that the insert cartridge (26) is displaceable in opposite inward and outward adjustment directions (DI, DO);
• and
• at least one cartridge pin (78) projecting from the cartridge rearward surface (66),
• wherein:
• the adjustment sleeve (44) is circumferentially disposed about the holder body (24), with the sleeve through hole wall surface (54) facing the body peripheral surface (38) so that the adjustment sleeve (44) is rotationally displaceable with respect to the forward body portion (32);
• at least one of the at least one cartridge pin (78) is located in a respective one of the sleeve adjustment grooves (62) defining at least one active cartridge pin (78a);
• and
• the tool holder (22) is adjustable between an inner adjusted position and an outer adjusted position upon rotation of the adjustment sleeve (44) about the holder axis (B) in the rotational sleeve direction (DRS);
• wherein
• in the inner adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective first radial pocket distance (R1);
• and
• in the outer adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective second radial pocket distance (R2), the second radial pocket distance (R2) being greater than the first radial pocket distance (R1).

A tool holder (22) configured for rotation about a holder central axis (B) defining opposite axially forward and rearward directions (DF, DR), and opposite rotational preceding and succeeding directions (DP, DS) with the preceding direction (DP) being a single cutting direction, the tool holder (22) comprising:

• a holder body (24) comprising a forwardly disposed forward body portion (32), the forward body portion (32) comprising a generally forward facing body forward surface (36) and a body peripheral surface (38) which extends about the holder central axis (B) and bounds the body forward surface (36) at an annular ridgeline, the body forward surface (36) comprising:
• a plurality of body engagement surfaces (42) which are circumferentially spaced apart from one another about the holder central axis (B), each body engagement surface comprising at least one engagement recess (74) and/or at least one engagement projection (76), with the body forward surface (36) being devoid of such engagement recesses (74) and/or engagement projections (76) in regions between the circumferentially spaced apart body engagement surfaces (42);
• an adjustment sleeve (44) having a sleeve central axis (A), the adjustment sleeve (44) comprising:
• opposite forward and rearward sleeve end surfaces (46, 48) and a sleeve peripheral surface (50) extending therebetween;
• a sleeve through hole (52) comprising a sleeve through hole wall surface (54) which extends about the sleeve central axis (A) and connects the forward and rearward sleeve end surfaces (46, 48);
• and
• at least one sleeve adjustment groove (62) recessed in the forward sleeve end surface (46), any and all of the sleeve adjustment grooves (62) spiraling inward in a rotational sleeve direction (DRS) defined by one of the preceding and succeeding directions (DP, DS);
• and
• a plurality of insert cartridges (26), each insert cartridge (26) comprising:
• an insert pocket (30);
• a rearward facing cartridge rearward surface (66) comprising a cartridge engagement surface (72) which is mutually engaged with a respective one of said plurality of body engagement surfaces (42) so that the insert cartridge (26) is displaceable in opposite inward and outward adjustment directions (DI, DO);
• and
• at least one cartridge pin (78) projecting from the cartridge rearward surface (66),
• wherein:
• the adjustment sleeve (44) is circumferentially disposed about the holder body (24), with the sleeve through hole wall surface (54) facing the body peripheral surface (38) so that the adjustment sleeve (44) is rotationally displaceable with respect to the forward body portion (32);
• at least one of the at least one cartridge pin (78) is located in a respective one of the sleeve adjustment grooves (62) defining at least one active cartridge pin (78a);
• and
• the tool holder (22) is adjustable between an inner adjusted position and an outer adjusted position upon rotation of the adjustment sleeve (44) about the holder axis (B) in the rotational sleeve direction (DRS);
• wherein
• in the inner adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective first radial pocket distance (R1);
• and
• in the outer adjusted position:
• each insert pocket (30) is spaced apart from the holder central axis (B) by a respective second radial pocket distance (R2), the second radial pocket distance (R2) being greater than the first radial pocket distance (R1).