Peripheral milling tool and method for arranging cutting edges
AssigneeKennametal Inc.
InventorFrank ENDRES
Life of this patent
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Abstract
A circumferential milling tool (10) for cutting metal is described, which comprises a milling cutter body (14) that can be rotated about a tool axis (12) and has at least two cutting edge groups. The arrangement of the first cutting edge group results in a first average chip thickness for the cutting edges (16) of the first cutting edge group and a second average chip thickness for the cutting edges (18, 20, 22, 24, 26) of the second cutting edge group. The first average chip thickness and the second average chip thickness are substantially equal. A method for arranging cutting edges (16, 18, 20, 22, 24, 26) on a circumferential milling tool (10) that can be rotated about a tool axis (12) is presented as well.
Claims14
A circumferential milling tool for cutting metal,
- comprising a milling cutter body that can be rotated about a tool axis, on which at least two cutting edge groups are arranged, wherein the cutting edges of a first cutting edge group are arranged on a circular path which has a first diameter (d1) and extends around the tool axis and the cutting edges of a second cutting edge group are arranged on a circular path which has a second diameter (d2) and extends around the tool axis, wherein
- the cutting edges of the first cutting edge group are arranged at a first setting angle (κ1) and the cutting edges of the first cutting edge group are assigned a first average chip thickness (hm1) for a predetermined first tooth feed (fz1) and a predetermined first cutting width (Ae1) and the cutting edges of the second cutting edge group are arranged on the milling cutter body at a second setting angle (κ2) such that they are assigned a second tooth feed (fz2) and a second cutting width (Ae2) which result from the predetermined first tooth feed (fz1) and the predetermined first cutting width (Ae1) and which in turn result in a second average chip thickness (hm2) that is assigned to the cutting edges of the second cutting edge group,
- wherein the first average chip thickness (hm1) and the second average chip thickness (hm2) are substantially equal.
A method for arranging cutting edges on a circumferential milling tool that can be rotated about a tool axis, comprising the following steps:
- a) arranging cutting edges of a first cutting edge group on a circular path which has a first diameter (d1) and extends around the tool axis and each with a first setting angle (κ1), so that, at a predetermined rotational speed of the circumferential milling tool and a predetermined feed rate of the circumferential milling tool, a first cutting width (Ae1) and a first tooth feed (fz1) for the cutting edges of the first cutting edge group are set, which result in a first average chip thickness (hm1) that is assigned to the cutting edges of the first cutting edge group,
- a) arranging cutting edges of a second cutting edge group on a circular path which has a second diameter (d2) and extends around the tool axis and each with a second setting angle (κ2), and
- wherein the second diameter (d2) and/or the second setting angle (κ2) are selected such that, at the predetermined rotational speed of the circumferential milling tool and the predetermined feed rate of the circumferential milling tool, a second cutting width (Ae2) and a second tooth feed (fz2) for the cutting edges of the second cutting edge group are set, which result in a second average chip thickness (hm2) that is assigned to the cutting edges of a second cutting edge group, and the second average chip thickness (hm2) and the first average chip thickness (hm1) are substantially equal.
Dependencies are inferred from the claim text.