Cutting tool and method for producing a machined product

The cutting tool's innovative groove and pocket arrangement, combined with secure fastening, addresses rattling vibrations, enhancing machining stability and efficiency by stabilizing chip flow and reducing vibrations.

DE112019000987B4Active Publication Date: 2025-04-03KYOCERA CORP
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Patent Information

Application Number
DE112019000987
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2019-02-15
Publication Date
2025-04-03
Estimated Expiration
2039-02-15

AI Technical Summary

Technical Problem

Existing cutting tools are susceptible to rattling vibrations, particularly at the end closer to the shaft, due to uneven distribution of grooves and pockets, leading to instability during machining processes.

Method used

The cutting tool design features a holder with strategically arranged grooves and pockets, where the grooves at the front end have a smaller depth and width compared to those at the rear end, along with inserts that are securely fastened using screws, reducing the susceptibility to rattling vibrations.

Benefits of technology

The design stabilizes chip flow and reduces rattling vibrations, ensuring consistent cutting performance and improved machining efficiency by minimizing instability at the cutting edge.

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Abstract

A cutting tool (1) with a rod shape, extending along an axis of rotation (X) from a first end (1a) to a second end (1b) and having: a holder (3), having a first pocket (5) arranged on one side of the first end (1a), a second pocket (7) which is located closer to one side of the second end (1b) than the first pocket (5), a first groove (11) extending along the first pocket (5) from the first end (1a) to the second end (1b), and a second groove (13) extending along the second pocket (7) from the first end (1a) to the second end (1b), a first insert (17) which is arranged in the first pocket (5), and a second insert (19) which is arranged in the second pocket (7), wherein a first length (L1) from the axis of rotation (X) to the first groove (11) in a first cross-section that is orthogonal to the axis of rotation (X) and includes the first groove (11), is smaller than a second length (L2) from the axis of rotation (X) to the second groove (13) in a second cross-section that is orthogonal to the axis of rotation (X) and includes the second groove (13), and an opening width (W1) of the first groove (11) in the first cross-section is smaller than an opening width (W2) of the second groove (13) in the second cross-section.
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