Fixing device for rotary shaft of milling head
US-2024293878-A1 · Sep 5, 2024 · US
Spindle unit
US9011007B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9011007-B2 |
| Application number | US-201313914770-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2013 |
| Priority date | Jun 19, 2012 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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A spindle unit includes: a main spindle that holds a rotary tool, and that is rotated; bearings by which the main spindle is rotatably supported; and a damper bearing by which the main spindle is rotatably supported, and that has a damping coefficient larger than damping coefficients of the bearings. The damping coefficient of the damper bearing is set to a value within a range from 10,000 to 1,000,000 N·s/m.
First claim
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What is claimed is: 1. A spindle unit, comprising: a main spindle that holds a rotary tool, and that is rotated; a first bearing by which the main spindle is rotatably supported; and a damper bearing by which the main spindle is rotatably supported, and that has a damping coefficient larger than a damping coefficient of the first bearing; wherein the damping coefficient of the damper bearing is set to a value within a range from 10,000 to 1,000,000 N·s/m.…
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Frequently asked questions
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- What does patent US9011007B2 cover?
- A spindle unit includes: a main spindle that holds a rotary tool, and that is rotated; bearings by which the main spindle is rotatably supported; and a damper bearing by which the main spindle is rotatably supported, and that has a damping coefficient larger than damping coefficients of the bearings. The damping coefficient of the damper bearing is set to a value within a range from 10,000 to 1…
- Who is the assignee on this patent?
- Jtekt Corp
- What technology area does this patent fall under?
- Primary CPC classification B23Q1/70. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 21 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).