Method for selecting a milling cutter for machining

Patent metadata

Field	Value
Publication number	US-10105770-B2
Application number	US-201715411271-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Jan 21, 2016
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A method for selecting a milling cutter, which method makes it possible to select a milling cutter on the basis of a part to be machined such that the cutting force is constant while the part is being machined.

First claim

The embodiments of the disclosure in which an exclusive property or privilege is claimed are defined as follows:

1. Method for selecting a milling cutter on the basis of a part to be machined, the milling cutter comprising:
a cylinder having a circular cross section of radius R and having an axis of rotation;
a plurality of cutting edges in a number M, arranged along parallel helical lines extending along an outer surface of the cylinder, the edges defining, together with the direction of the axis of the cylinder, a helix angle β, the edges enclosing constant angles α in a plane that is perpendicular to the axis such that α=360°/M;
the method comprising:
providing a part having a side;
determining a height h of the side; and
electing a milling cutter having values of α, β and R such that the following equation is satisfied:

tg
⁡

(
β
)

R
⁢

⁢
α

=

integer
h

.

2. The method of claim 1 , wherein the number M of cutting edges of the milling cutter is between 1 and 10.

3. The method of claim 2 , wherein the number M of cutting edges of the milling cutter is between 2 and 6.

4. The method of claim 1 , wherein the helix angle β is between 10° and 80°.

5. The method of claim 4 , wherein the helix angle β is between 20° and 70°.

6. Milling arrangement comprising a milling cutter and a part, said milling cutter permitting lateral milling of said part, said milling cutter comprising:
a cylinder having a circular cross section of radius R and having an axis of rotation;
a plurality of cutting edges in a number M, arranged along parallel helical lines extending along an outer surface of the cylinder, the edges defining, together with the direction of the axis of the cylinder, a helix angle β, the edges enclosing constant angles α in a plane that is perpendicular to the axis such that α=360°/M;
said part having a side facing said milling cutter that has a height h measured in parallel with the axis of the cylinder of the milling cutter,
wherein the values of α, β and R satisfy the following equation:

tg
⁡

(
β
)

R
⁢

⁢
α

=

integer
h

.

7. The milling arrangement of claim 6 , wherein the number M of cutting edges of the milling cutter is between 1 and 10.

8. The milling arrangement of claim 7 , wherein the number M of cutting edges of the milling cutter is between 2 and 6.

9. The milling arrangement of claim 6 , wherein the helix angle β is between 10° and 80°.

10. The milling arrangement of claim 9 , wherein the helix angle β is between 20° and 70°.

11. The milling arrangement of claim 6 , wherein the side of the part facing the milling cutter is substantially planar.

12. The milling arrangement of claim 6 , wherein the side of the part facing the milling cutter is parallel to the axis.

Assignees

• Safran Aero Boosters Sa

Inventors

• Englebert Eric

Classifications

• B23C5/1081

  with permanently fixed cutting inserts  (B23C5/1018 and B23C5/1063 take precedence) · CPC title

• B23C5/10

  Shank-type cutters, i.e. with an integral shaft · CPC title

• B23C5/04 Primary

  Plain cutters, i.e. having essentially a cylindrical or tapered cutting surface of substantial length (B23C5/10 takes precedence) · CPC title

• B23C3/00 Primary

  Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, {heat assisted machining B23P25/00}) · CPC title

• B23C2210/0485

  Helix angles · CPC title