A system and method for holding a cutting insert, and a cutting insert for use therewith
AssigneeNo Screw Ltd.
InventorGershon HARIF
Life of this patent
Estimating the term…
Abstract
A cutting tool holder (102, 104, 10B, 11B, 19B) system for mounting thereon a cutting insert (124, 500, 560, 800) comprising a tool holder (102, 104, 10B, 11B, 19B), a clamp (128) that is rotatable with respect to the tool holder between a clamping position, in which the clamp (128) clamps down on the cutting insert (124, 500, 560, 800) and an unclamping position, in which the clamp (128) allows the removal of the insert (124, 500, 560) from a seat (120), a compression unit (150) exerting a clamping force (154, 174, 590) in the clamping position, and a rotation unit (130) for enabling a user to rotate the clamp (128) by hand.
Claims26
1-47. (canceled)
A cutting tool holder system operative for securely mounting thereon a cutting insert for performing a cutting operation thereby, said cutting tool holder system, at least when assembled for operation, comprising:
- (a) a cutting tool holder having a body with a seat configured for mounting the cutting insert thereon;
- (b) a clamp having a cutting insert-engaging portion and rotatably mounted to the cutting tool holder, the clamp being rotatably maneuverable between a clamping position, in which the clamp is operable to apply a clamping force at least on the cutting insert positioned within the seat for preventing removal of the cutting insert from the seat, and an unclamping position, in which the clamp allows the removal of the insert from the seat, the body of the cutting tool holder having a clamp-facing surface facing the clamp;
- (c) a compression unit configured for facilitating application of a compression force on the clamp towards the cutting tool holder, to enable the clamp to apply said clamping force at least while the clamp is positioned in the clamping position;
- and
- (d) a rotation unit configured for enabling the clamp to move in a rotational motion with respect to the cutting tool holder between the clamping position and the unclamping position, by application of a rotational force of a magnitude compatible with that of a user's manual force;
- and
- (e) an elevation arrangement for elevating the cutting insert-engaging portion above the clamp-facing surface during rotation of the clamp by the rotation unit,
- (f) the elevation arrangement comprising an inclined surface and a vertically adjacent surface which are other than thread surfaces, and which are configured to engage each other in one of the following manners:
- the inclined surface is positioned at least partially codirectionally with at least a part of the rotational motion of the clamp when maneuvered between the clamping position and the unclamping position and configured to engage the vertically adjacent surface;
- or
- the vertically adjacent surface is configured to engage the inclined surface so as to advance therealong during the rotational motion of the clamp when maneuvered between the clamping position and the unclamping position.
A method for selectively mounting a cutting insert on a seat formed within a body of a cutting tool holder during a clamping mode and dismounting the cutting insert from the seat during an unclamping mode, the body being formed with a clamp-facing surface configured to face a clamp having a cutting insert-engaging portion, and is provided with an elevation arrangement comprising an inclined surface configured to engage a vertically adjacent surface, the inclined surface being positioned at least partially codirectionally with at least a part of the rotational motion of the clamp when maneuvered between the clamping position and the unclamping position and the inclined surface and vertically adjacent surface being other than thread surfaces, the method comprising:
- (a) seating the cutting insert in the seat;
- (b) applying a compression force on the clamp towards the cutting tool holder during both the clamping mode and the unclamping mode;
- (c) clamping the cutting insert during the clamping mode to the seat by applying a clamping force via the cutting insert-engaging portion of the clamp at least on the cutting insert, thereby preventing removal of the cutting insert from the seat,
- wherein the clamping force is facilitated by the compression force;
- and
- (d) unclamping the cutting insert during the unclamping mode by rotating the clamp with respect to the cutting tool holder with a rotational force of a magnitude compatible with that of a user's manual force, wherein during the rotation of the clamp, the cutting insert-engaging portion of the clamp is elevated above the clamp-facing surface by said elevation arrangement during rotation of the clamp by the rotation unit, and
- (e) engaging the vertically adjacent surface by the inclined surface for advancing along the inclined surface during the rotational motion.
A cutting tool holder system operative for securely mounting thereon a cutting insert for performing a cutting operation thereby, said cutting tool holder system, at least when assembled for operation, comprising:
- (a) a cutting tool holder having a body with a seat configured for mounting the cutting insert thereon;
- (b) a clamp having a cutting insert-engaging portion and rotatably mounted to the cutting tool holder, the clamp being rotatably maneuverable between a clamping position, in which the clamp is operable to apply a clamping force at least on the cutting insert positioned within the seat for preventing removal of the cutting insert from the seat, and an unclamping position, in which the clamp allows the removal of the cutting insert from the seat;
- (c) a compression unit configured for facilitating application of a compression force on the clamp towards the cutting tool holder, to enable the clamp to apply said clamping force at least while the clamp is positioned in the clamping position;
- and
- (d) a rotation unit configured for enabling the clamp to move in a rotational motion with respect to the cutting tool holder between the clamping position and the unclamping position, by application of a rotational force of a magnitude compatible with that of a user's manual force;
- wherein the clamp comprises a clamp-rear portion, which is located horizontally opposite the cutting insert-engaging portion, and the body comprises a body-rear portion which is located horizontally opposite the seat, and
- wherein an extension extends from one of the clamp-rear portion and the body-rear portion and is configured to slidably move along the other one of the body-rear portion and the clamp-rear portion during the rotational motion.
A method for selectively mounting a cutting insert on a seat formed within a body of a cutting tool holder during a clamping mode and dismounting the cutting insert from the seat during an unclamping mode, the body being formed with a body-rear portion which is located horizontally opposite the seat, a clamp-facing surface configured to face a clamp having a cutting insert-engaging portion, and the clamp having a clamp-rear portion, which is located horizontally opposite the cutting insert-engaging portion, the method comprising:
- (a) seating the cutting insert in the seat;
- (b) applying a compression force on the clamp towards the cutting tool holder during both the clamping mode and the unclamping mode;
- (c) clamping the cutting insert during the clamping mode to the seat by applying a clamping force via the cutting insert-engaging portion of the clamp at least on the cutting insert, thereby preventing removal of the cutting insert from the seat,
- wherein the clamping force is facilitated by the compression force;
- (d) unclamping the cutting insert during the unclamping mode by rotating the clamp with respect to the cutting tool holder with a rotational force of a magnitude compatible with that of a user's manual force,
- wherein an extension extends from one of the clamp-rear portion and the body-rear portion and is configured to slidably move along the other one of the body-rear portion and the clamp-rear portion during the rotational motion.
Dependencies are inferred from the claim text.