US 12,722,214 B2Granted

Crescent-edge hard alloy milling cutter and parameter design method thereof

AssigneeHarbin University of Science and Technology

InventorsZhipeng Jiang, Xianli Liu, Caixu Yue, Yiwen Wang, Anshan Zhang, Rongyi Li, Youheng Shi, Desheng Hu, Zunyan Ma

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Abstract

A crescent-edge hard alloy milling cutter and a parameter design method thereof relate to the technical field of milling cutter design. The crescent-edge hard alloy milling cutter includes a front cutter head, a peripheral blade portion, and a shank portion, where a plurality of crescent peripheral blades extending helically toward the front cutter head are provided on the peripheral blade portion; a plurality of crescent cutting blades are provided on the front cutter head; and the crescent cutting blade and the crescent peripheral blade are in arc transition in pairs. With the design of the crescent cutting blade and the crescent peripheral blade, the crescent-edge hard alloy milling cutter has excellent cutting performance. Moreover, the crescent cutting blade and the crescent peripheral blade are in the arc transition, ensuring smoothness of the milling cutter to cut a metal workpiece.

A crescent-edge hard alloy milling cutter, comprising a front cutter head, a peripheral blade portion, and a shank portion, wherein a plurality of crescent peripheral blades extending helically toward the front cutter head are provided on the peripheral blade portion;

a plurality of crescent cutting blades are provided on the front cutter head;
and the crescent cutting blade and the crescent peripheral blade are joined by a continuous arcuate transition surface;
based on a plane-coordinate system XOY, with an axis of the crescent-edge hard alloy milling cutter as a Z axis, a three-dimensional (3D) coordinate system O-XYZ is established;
the Z axis takes a direction pointing to the front cutter head as a positive direction;
and A is an amplitude of an edge of the crescent peripheral blade, is used to determine a height of a crescent shape of the crescent peripheral blade, and is in units of a micron, B is a frequency of the crescent peripheral blade, and is used to determine a number of times that the crescent shape of the crescent peripheral blade appears in one helix period, and M is a pitch, and is used to determine an ascending height of a helix;
with a center of the front cutter head as an origin O, the plane-coordinate system XOY flush with a transverse section of the front cutter head is established;
and in an initial state, a curvilinear equation of the crescent cutting blade satisfies the following relation:
{
x
⁡
(
θ
)
=
R
2
×
(
cos
⁢
θ
+
1
)
+
B
⁢
1
×
θ
π
y
⁡
(
θ
)
=
A
⁢
1
×
sin
⁢
θ
wherein θ is a variation parameter of a curve of the crescent cutting blade, and θ∈[0, π];
R is a radius of the front cutter head, and R∈[1 mm, 25 mm];
A1 is an amplitude of an edge of the crescent cutting blade, and in unit of a micron, and A1∈[0.2, 5];
and B1 is a distance from a starting point of the crescent cutting blade to a center of the crescent-edge hard alloy milling cutter, and B1∈[0.1R, 0.5R];
and
the plurality of crescent cutting blades in the initial state are respectively rotated by different angles about the axis of the crescent-edge hard alloy milling cutter to obtain and dispose a plurality of crescent cutting blades at mutually different angular positions on the front cutter head;
and a curvilinear equation of each of the plurality of different crescent cutting blades satisfies the following relation:
(
x
⁡
(
θ
)
k
y
⁡
(
θ
)
k
)
=
(
cos
⁢
θ
k
-
sin
⁢
θ
k
sin
⁢
θ
k
cos
⁢
θ
k
)
⁢
(
x
⁡
(
θ
)
y
⁡
(
θ
)
)
wherein k represents serial numbers of the plurality of different crescent cutting blades, and k=1, 2, 3, . . . , N, N representing a total number of the plurality of crescent cutting blades on the front cutter head,
N
≥
2
,
N
∈
N
+
,
and
⁢
θ
k
=
2
⁢
π
⁢
k
N
.

117 more elements

Facts

Application

19/258,919Filed 3 Jul 2025

Priority

CN 202411248983.06 Sep 2024

Published

US 2026/0070134 A112 Mar 2026

Granted

1 Sep 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B23C 5/04
Characterised by the shape of the cutter: plain cutters, i.e. having essentially a cylindrical or tapered cutting surface of substantial length
B23C 5/006
Milling-cutters: details of the milling cutter body
B23C 5/10
Characterised by the shape of the cutter: shank-type cutters, i.e. with an integral shaft
B23C 2210/0407
Angles: cutting angles

Abstract

Claims6