Milling/surfacing method and device

Patent metadata

Field	Value
Publication number	US-9597738-B2
Application number	US-201414171103-A
Country	US
Kind code	B2
Filing date	Feb 3, 2014
Priority date	Mar 22, 2011
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A method for milling a planar surface, during which a milling cutter, an axis of rotation of which is perpendicular to a surface to be machined, is moved in a direction parallel to the plane of the surface, to machine the surface in a single machining operation, over a predetermined layer of material, using a single milling head, and the milling cutter, in a same axial position relative to the surface to be machined, simultaneously carries out rough working, at least one intermediate finishing operation, and a finishing operation over a same layer of material.

First claim

The invention claimed is:

1. A method for milling a planar surface, comprising:
moving a milling cutter, a rotation axis of which is perpendicular to a surface to be machined, in a direction parallel to a plane of the surface so as to machine the surface to be machined in a single machining operation to a predetermined material thickness by a single milling head including two or more of sets of cutting tips distributed around the milling head, each of the sets including a first tip having a first cutting edge, a second tip having a second cutting edge, and a third tip having a third cutting edge, the cutting edges being offset radially with respect to one another at a same axial position on the milling cutter; and
the milling cutter simultaneously carrying out, in a same axial position with respect to the surface to be machined, a rough machining operation via the first tip, at least one intermediate finish machining operation via the second tip, and a finish machining operation via the third tip, to a same material thickness.

2. A cylindrical milling tool for milling a planar surface, comprising:
a tool body; and
two or more sets of cutting tips attached to the tool body, each of the sets including a first tip having a first cutting edge, a second tip having a second cutting edge, and a third tip having a third cutting edge, the cutting edges being offset radially with respect to one another at a same axial position on the milling tool, the sets being distributed around a circumference of the milling tool to jointly machine a same material thickness when the milling tool is moved parallel to the surface to be machined.

3. The milling tool as claimed in claim 2 , wherein the first and second cutting edges overlap in a tiered manner over their entire cutting height, in projection in a diametral plane of the milling tool.

4. The milling tool as claimed in claim 3 , wherein the first edge of the first tip of each of the sets, as seen in a direction of rotation of the milling tool, is a rough machining edge, and the second edge of the second tip of each of the sets is offset successively toward an outside in a radial direction of the milling tool, to progressively machine the same material thickness.

5. The milling tool as claimed in claim 2 , wherein the first cutting edge of the first tip of each the sets is positioned to carry out rough machining and the second cutting edge of the second tip of each of the sets is positioned to carry out finish machining of the milling.

6. The milling tool as claimed in claim 2 , wherein the cutting tips are removable tips inserted into tip-holder cartridges of the tool body.

7. The milling tool as claimed in claim 6 , wherein a position of the cutting tips on the cartridges is adjustable.

8. The milling tool as claimed in claim 2 , wherein the third tip is positioned radially between the first tip and the second tip.

9. The milling tool as claimed in claim 8 , wherein the first cutting edge of the first tip of each the sets is positioned to carry out rough machining, the third cutting edge of the third tip of each the sets is positioned to carry out intermediate finish machining, and the second cutting edge of the second tip of each of the sets is positioned to carry out finish machining of the milling.

10. The milling tool as claimed in claim 2 , wherein the first cutting edge, the second cutting edge, and the third cutting edge each forms a different angle with a plane parallel to the surface to be machined.

11. The milling tool as claimed in claim 2 , wherein the first cutting edge forms an angle with a plane parallel to the surface to be machined that is different than an angle formed by the second cutting edge with the surface to be machined.

Assignees

• Renault Sas

Inventors

• Cheronneau Gerard
• Baudry Arnaud

Classifications

• B23C5/202

  Plate-like cutting inserts with special form (special form related to securing of the insert B23C5/22) · CPC title

• B23C5/2252

  for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body · CPC title

• B23C5/2278

  for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body · CPC title

• B23C5/2226

  for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body · CPC title

• B23C5/2472

  the adjusting means being screws · CPC title