Patent · US Active

Combination tool as well as drills for such a drilling/chamfering tool

US12151293B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

KENNAMETAL INC. · US

Inventors

Marcus Paul · Nuremberg, DE
Bernhard Eckl · Burghausen, DE
Herbert Rudolf Kauper · Erlangen, DE

Key dates

Filing date	Mar 13, 2020
Grant date	Nov 26, 2024
Priority date	—
Expiry date	Sep 5, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2251/043
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (γ).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.