US 2016/0089730 A1Published application

Mechanism for enhanced, bi-directional fine adjustment of cutting insert cartridges in machine tools

AssigneeSandvik Intellectual Property AB

InventorYevgeny KOCHEROVSKY

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Abstract

Cutting insert cartridge for chip removing machining tools has an axial adjustment system threadedly engaged with a cartridge body and a tool body. The axial adjustment system includes a differential screw in threaded engagement with the tool body either directly, for example by threaded engagement with a threaded opening in the tool body, or indirectly, for example by threaded engagement with a cross dowel fastener slidably positioned in an opening in the tool body. Actuation portion positioned axially between threaded end portions of the differential screw has an engagement feature on an outer surface to be driven, e.g., with a tool or by hand, to rotate the differential screw and adjust the axial position of the cartridge. The spaced apart relationship improves access to the actuation portion and engagement feature for rotation of the differential screw. Chip removing machining tools with such cartridges and methods of machining are also disclosed.

Claims21

Dependent claims

A cutting insert cartridge for a chip removing machining tool, comprising:

a cartridge body including a first end surface, a second end surface, a top surface, and a bottom surface and having a longitudinal axis oriented from the first end surface to the second end surface;
a seat for a cutting tool insert, a surface of the seat intersecting the top surface of the cartridge body proximate a first axial end of the cartridge body;
a threaded opening in the second end surface of the cartridge body;
an opening in the cartridge body extending from a top surface to a bottom surface, the opening located between the seat and a second axial end of the cartridge body;
and
an axial adjustment system including a differential screw having a first threaded portion, a second threaded portion, an actuation portion, and an engagement feature on an outer surface of the actuation portion,
wherein the first threaded portion, actuation portion and second threaded portion are positioned on an axis of the differential screw and the actuation portion is axially between the first threaded portion and the second threaded portion,
wherein the engagement feature has an engagement axis that is non-parallel to the axis of the differential screw, and
wherein the first threaded portion of the differential screw is threadedly engaged in the threaded opening in the second end surface of the cartridge body.

6 more elements

A chip removing machining tool, comprising:

a tool body having a longitudinal axis;
a cutting insert cartridge mounted in a slot in a surface of the tool body;
and
an adjustment system for translating the cutting insert cartridge in the slot axially with respect to the longitudinal axis of the tool body,
wherein the cutting insert cartridge includes:
a cartridge body including a first end surface, a second end surface, a top surface, and a bottom surface and having a longitudinal axis oriented from the first end surface to the second end surface;
a seat for a cutting tool insert, a surface of the seat intersecting the top surface of the cartridge body proximate a first axial end of the cartridge body;
a first threaded opening in the second end surface of the cartridge body;
an opening in the cartridge body extending from a top surface to a bottom surface, the opening located between the seat and a second axial end of the cartridge body;
and
wherein the adjustment system includes a differential screw having a first threaded portion, a second threaded portion, an actuation portion, and an engagement feature on an outer surface of the actuation portion,
wherein the first threaded portion, actuation portion and second threaded portion are positioned on an axis of the differential screw and the actuation portion is axially between the first threaded portion and the second threaded portion,
wherein the engagement feature has an engagement axis that is non-parallel to the axis of the differential screw, and
wherein the first threaded portion of the differential screw is threadedly engaged in the first threaded opening in the second end surface of the cartridge body.

11 more elements

Dependencies are inferred from the claim text.