Housing component having a flange with microstructure

Patent metadata

Field	Value
Publication number	US-2019211913-A1
Application number	US-201916241679-A
Country	US
Kind code	A1
Filing date	Jan 7, 2019
Priority date	Jan 8, 2018
Publication date	Jul 11, 2019
Grant date	—

Abstract

A housing component includes a flange defining a center point and having an end face formed with microstructures in a first region and a second region to increase a local friction coefficient. The microstructures have each a blade shape with a cutting line, the cutting line in the first region being arranged concentrically about a first local center point, and the cutting line in the second region being arranged concentrically about a second local center point. The first and second local center points have different radial distances from the center point of the flange.

First claim

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims and includes equivalents of the elements recited therein:

1 . A housing component, comprising a flange defining a center point and having an end face formed with microstructures in a first region and a second region to increase a local friction coefficient, said microstructures having each a blade shape with a cutting line, the cutting line in the first region being arranged concentrically about a first local center point, and the cutting line in the second region being arranged concentrically about a second local center point, the first and second local center points having different radial distances from the center point of the flange.

2 . The housing component of claim 1 , wherein the microstructures are at least partly formed as rotation bands and/or produced by laser processing.

3 . The housing component of claim 1 , wherein the blade shape has a cross section in the shape of a triangle, a trapezoid or a trapezium.

4 . The housing component of claim 1 , wherein the cutting line of the microstructure in the first region and/or the second region is aligned transversely relative to a mechanical stress and/or an equivalent stress at the end face of the flange.

5 . The housing component of claim 4 , wherein the mechanical stress is a shear stress produced during operation.

6 . The housing component of claim 4 , wherein the mechanical stress is at a maximum when exceeding a selectable threshold value in the first region and/or second region during operation.

7 . The housing component of claim 1 , further comprising a torque bracket, the first region and/or the second region being arranged at a transition zone to the torque bracket.

8 . A method for machining a housing component having a flange, said method comprising:
positioning a milling cutter at a first local center point of an end face of the flange; machining the end face of the flange to create a microstructure; and moving the milling cutter in a circumferential processing direction and in a radial processing direction from the first local center point to a second local center point while machining the end face.

9 . The method of claim 8 , wherein the microstructure is formed as rotation bands.

10 . The method of claim 8 , wherein the milling cutter has a cutting diameter which exceeds a width of the flange.

11 . The method of claim 8 , wherein at least one of the first local center point and the second local center point lies radially outside the end face of the flange.

12 . A housing, comprising first and second housing components which are interconnected via a flange connection, each of the first and second housing components comprising a flange defining a center point and having an end face formed with microstructures in a first region and a second region to increase a local friction coefficient, said microstructures having each a blade shape with a cutting line, the cutting line in the first region being arranged concentrically about a first local center point, and the cutting line in the second region being arranged concentrically about a second local center point, the first and second local center points having different radial distances from the center point of the flange.

13 . The housing of claim 12 , wherein the cutting lines of the microstructures on the end faces are arranged in parallel relation to each other in a reinforcing region.

14 . The housing of claim 12 , wherein the first housing component is made from a material which is harder than a material of the second housing component, and the microstructure of the first housing component has a roughness which is greater than the microstructure of the second housing component.

15 . A planetary gear set, comprising:
a ring gear; a planet gear rotatably arranged in the ring gear; and a housing including a housing component configured to accommodate the ring gear; said housing component comprising a flange defining a center point and having an end face formed with microstructures in a first region and a second region to increase a local friction coefficient, said microstructures having each a blade shape with a cutting line, the cutting line in the first region being arranged concentrically about a first local center point, and the cutting line in the second region being arranged concentrically about a second local center point, the first and second local center points having different radial distances from the center point of the flange.

16 . A wind power installation, comprising:
a nacelle; a planetary gear set comprising a ring gear, a planet gear rotatably arranged in the ring gear, and a housing including a housing component configured to accommodate the ring gear; said housing component comprising a flange defining a center point and having an end face formed with microstructures in a first region and a second region to increase a local friction coefficient, said microstructures having each a blade shape with a cutting line, the cutting line in the first region being arranged concentrically about a first local center point, and the cutting line in the second region being arranged concentrically about a second local center point, the first and second local center points having different radial distances from the center point of the flange; a generator; and a rotor connected to the nacelle and coupled in a torque transferring manner to the planetary gear set to drive a generator.

Assignees

• Flender Gmbh

Inventors

• Vriesen Johannes
• Böing Alfons

Classifications

• B23C3/00

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

• B23C2220/36

  Production of grooves · CPC title

• F03D15/00

  Transmission of mechanical power · CPC title

• F16H57/025 Primary

  Support of gearboxes, e.g. torque arms, or attachment to other devices · CPC title

• B23K26/355

  Texturing · CPC title