Manufacturing process for aerospace bearing rolling elements
US-9732394-B2 · Aug 15, 2017 · US
Method for surface treatment, roller bearing component and device
US11717922B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11717922-B2 |
| Application number | US-201917414515-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 28, 2019 |
| Priority date | Dec 19, 2018 |
| Publication date | Aug 8, 2023 |
| Grant date | Aug 8, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method for surface treatment of a workpiece includes providing the workpiece with hardened workpiece surface, clamping the workpiece, removing material from the hardened workpiece surface with a material removal tool to produce a machined surface with first machining tracks, and rolling the machined surface with a rolling tool by overlapping the first machining tracks to produce a rolled surface with second machining tracks. A distance between the material removal tool and the rolling tool measured in an axial direction of the workpiece is varied in an oscillating manner. The material removal tool may be advanced in the axial direction at a constant speed and the rolling tool may be advanced in the axial direction at an oscillating speed, or the rolling tool may be advanced in the axial direction at a constant speed and the material removal tool may be advanced in the axial direction at an oscillating speed.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for surface treatment of a workpiece, the method comprising: providing the workpiece, the workpiece comprising a hardened workpiece surface; providing a material removal tool and a rolling tool, the rolling tool being independently clamped relative to the material removal tool and arranged at a distance offset from the material removal tool in an axial direction of the workpiece; clamping the workpiece; simultaneously machining the workpiece by: removing material from the hardened workpiece surface with the material removal tool to produce a machined surface with first machining tracks; and rolling the machined surface with the rolling tool by overlapping the first machining tracks to produce a rolled surface with second machining tracks, wherein the distance between the material removal tool and the rolling tool measured in the axial direction of the workpiece is varied in an oscillating manner. 2. The method of claim 1 , wherein the material removal tool is advanced in the axial direction at a constant speed and the rolling tool is advanced in the axial direction at an oscillating speed. 3. The method of claim 1 , wherein the rolling tool is advanced in the axial direction at a constant speed and the material removal tool is advanced in the axial direction at an oscillating speed. 4. The method of claim 1 , wherein the rolling tool is advanced in the axial direction at a first oscillating speed and the material removal tool is advanced in the axial direction at a second oscillating speed, different than the first oscillating speed. 5. The method of claim 1 , wherein: a feed direction of the rolling tool is reversed in an oscillating manner while a feed direction of the material removal tool is maintained; or a feed direction of the material removal tool is reversed in an oscillating manner while a feed direction of the rolling tool is maintained. 6. The method of claim 1 , wherein: a feed direction of the material removal tool is reversed in an oscillating manner; and a feed direction of the rolling tool is reversed in an oscillating manner. 7. A method for surface treatment of a workpiece, the method comprising: providing the workpiece, the workpiece comprising a hardened workpiece surface; providing a material removal tool and a rolling tool, the rolling tool being independently clamped relative to the material rolling tool and arranged at a distance offset from the material removal tool in an axial direction of the workpiece; clamping the workpiece; simultaneously machining the workpiece by: removing material from the hardened workpiece surface with the material removal tool to produce a machined surface with first machining tracks; and rolling the machined surface with the rolling tool by overlapping the first machining tracks to produce a rolled surface with second machining tracks, wherein a feed direction of the material removal tool or the rolling tool in the axial direction of the workpiece is reversed in an oscillating manner.
Assignees
Inventors
Classifications
- B23P15/003Primary
bearings (see also F16C33/00) · CPC title
for grinding races, e.g. roller races · CPC title
Special methods of manufacture · CPC title
by rolling · CPC title
Race making · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11717922B2 cover?
- A method for surface treatment of a workpiece includes providing the workpiece with hardened workpiece surface, clamping the workpiece, removing material from the hardened workpiece surface with a material removal tool to produce a machined surface with first machining tracks, and rolling the machined surface with a rolling tool by overlapping the first machining tracks to produce a rolled surf…
- Who is the assignee on this patent?
- Schaeffler Technologies Ag
- What technology area does this patent fall under?
- Primary CPC classification B23P15/003. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 08 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).