Milling tool with insert compensation

• US 10,220,453 B2
• Filed: 10/30/2015
• Issued: 03/05/2019
• Est. Priority Date: 10/30/2015
• Status: Active Grant

• Current Assignee: Ford Motor Company
• Original Assignee: Ford Motor Company
• Inventors: Stephenson, David Alan, Ozog, David Alan, Coffman, David Garrett
• Primary Examiner(s): Ramos, Nicole N
• Application Number:
  US14/928,163
• Publication Number:
  US 20170120352A1
• Time in Patent Office: 1,222 Days
• CPC Class Codes: B23B 2205/125 One or more walls of the seat being elastically deformable
• CPC Class Codes: B23B 41/12 for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
• CPC Class Codes: B23C 2200/206 Cutting edges having a wave-form
• CPC Class Codes: B23C 2200/368 Roughened surfaces
• CPC Class Codes: B23C 2210/285 Cutting edges arranged at different diameters
• CPC Class Codes: B23C 2210/287 Cutting edges arranged at different axial positions or having different lengths in the axial direction
• CPC Class Codes: B23C 2210/62 Selectable cutting diameters
• CPC Class Codes: B23C 2215/242 Combustion chambers
• CPC Class Codes: B23C 2220/52 Orbital drilling, i.e. use of a milling cutter moved in a spiral path to produce a hole
• CPC Class Codes: B23C 2226/125 cubic [CBN]
• CPC Class Codes: B23C 2270/06 Use of elastic or plastic deformation B23C2210/161 takes precedence
• CPC Class Codes: B23C 3/02 Milling surfaces of revolution B23C3/06, B23C3/08 take precedence
• CPC Class Codes: B23C 5/109 with removable cutting inserts
• CPC Class Codes: B23C 5/2208 for plate-like cutting inserts B23C5/2226, B23C5/2234 take precedence
• CPC Class Codes: B23C 5/24 adjustable
• CPC Class Codes: B23C 5/2462 the adjusting means being oblique surfaces
• CPC Class Codes: B23C 5/2486 where the adjustment is made by elastically deforming the toolholders
• CPC Class Codes: C23C 4/02 Pretreatment of the material to be coated, e.g. for coating on selected surface areas

Abstract

A milling tool is disclosed. The milling tool may include an elongated body having a longitudinal axis and a plurality of cutting inserts. The cutting inserts may each have a cutting edge and a cutting radius and be coupled to the body and spaced along the longitudinal axis. One or more of the plurality of cutting inserts may be adjustable (e.g., mechanically adjustable) between first and second cutting radii. A difference between the first and second cutting radii may be at least 10 μm. The milling tool may include cutting inserts having a plurality of different cutting radii. The milling tool may be configured to have a length that spans an entire height of an engine bore. The cutting inserts having different radii may compensate for dimensional errors in an engine bore diameter that occur when milling a deep pocket.

Claims

1. A milling tool comprising:

an elongated body having a longitudinal axis and first and second ends; and

a plurality of cutting inserts including first, second and third cutting inserts coupled to the body and helically staggered along the longitudinal axis in sequence from the first end towards the second end and having first, second and third cutting radii, respectively, the second cutting insert disposed between the first and third cutting inserts,

one or more of the plurality of cutting inserts are mechanically adjustable, the second cutting radius is greater than the first and third cutting radii, and the first cutting radius is greater than the third cutting radius.

2. The tool of claim 1, wherein a difference between the first and second cutting radii is at least 10 μ

m.

3. The tool of claim 1, wherein the one or more mechanically adjustable cutting inserts are secured to an attachment surface.

4. The tool of claim 3, wherein the one or more mechanically adjustable cutting inserts are configured to translate across the attachment surface.

5. The tool of claim 1, wherein the one or more mechanically adjustable cutting inserts are attached to a cartridge and the cartridge is attached to the elongated body.

6. The tool of claim 1, wherein all of the plurality of cutting inserts are mechanically adjustable between first and second cutting radii and a difference between the first and second cutting radii is at least 10 μ

m.

7. The tool of claim 1, wherein the plurality of cutting inserts span at least 100 mm along the longitudinal axis.

8. The tool of claim 1, wherein the plurality of cutting inserts are arranged in at least two rows and each of the cutting inserts is mechanically adjustable between first and second cutting radii.

9. The tool of claim 1, wherein the one or more of the plurality of cutting inserts are mechanically and incrementally adjustable between a plurality of positions.

16. The milling tool of claim 5, wherein the cartridge is helically-shaped and the plurality of inserts follow the helical shape of the cartridge.

10. A milling tool comprising:

an elongated body having a longitudinal axis and first and second ends; and

a plurality of cutting inserts including first, second and third translatable cutting inserts coupled to the body, helically staggered along the longitudinal axis in sequence from the first end towards the second end, and having first, second and third cutting radii, respectively, the second cutting insert disposed between the first and third cutting inserts,

the second cutting radius is greater than the first and third cutting radii, the first cutting radius is greater than the third cutting radius, the first and second cutting radii differing by at least 10 μ

m.

11. The tool of claim 10, wherein a difference between the first and second cutting radii is at most 50 μ

m.

12. The tool of claim 10, wherein the plurality of cutting inserts are configured to generate a non-uniform force distribution perpendicular to the longitudinal axis of the elongated body.

13. The tool of claim 10, wherein the first cutting radius differs from the second cutting radius by at least 15 μ

m.

17. The milling tool of claim 10, wherein the cartridge is helically-shaped and the plurality of inserts follow the helical shape of the cartridge.

14. A milling tool comprising:

an elongated body having a longitudinal axis; and

first, second, and third cutting inserts coupled to the body and helically staggered along the longitudinal axis in sequence, and having first, second and third cutting radii, respectively, the second insert disposed between the first and third inserts, the second radius is greater than the first and third radii and the first radius is greater than the third radius.

15. The tool of claim 14, wherein the tool includes at least six cutting inserts coupled to the body and spaced along the longitudinal axis.

18. The milling tool of claim 14, wherein the first, second, and third cutting inserts are coupled to the body via a helically-shaped cartridge.

19. The milling tool of claim 18, wherein the first, second, and third inserts follow the helical shape of the cartridge.

20. The milling tool of claim 14, wherein the first, second and third cutting inserts are spaced apart from each other.