Polishing device
US-2019193246-A1 · Jun 27, 2019 · US
Attachment structure for main spindle and tool holder of machine tool
US9511462B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9511462-B2 |
| Application number | US-201414502299-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2014 |
| Priority date | Oct 1, 2013 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
There is provided an attachment structure for a main spindle and a tool holder of a machine tool. The tool holder is attached to the main spindle by a tapered shank portion of the tool holder being inserted into a tapered hole formed in the main spindle of the machine tool. At least one circumferential groove is formed in at least one of the tapered hole and an inner wall of the main spindle.
First claim
Opening claim text (preview).
The invention claimed is: 1. An attachment structure, comprising a main spindle and a tool holder of a machine tool, wherein the tool holder has a tapered shank portion having a smaller end and a larger end opposite each other in an axial direction of the tool holder, the tapered shank portion gradually tapered from the larger end to the smaller end, and a first through hole extending in the axial direction through the tapered shank portion, the main spindle has a tapered hole, and a second through hole communicated with the tapered hole, the tool holder is attached to the main spindle in a state in which the tapered shank portion of the tool holder is inserted, in the axial direction, into the tapered hole formed in the main spindle of the machine tool, and the first through hole is communicated with the second through hole to form a passage for a cutting fluid, and the attachment structure further comprises: a circumferential groove formed (i) in an inner wall of the main spindle and (ii) outside the tapered hole, wherein the circumferential groove is arranged, in the axial direction, between the tapered hole and the smaller end of the tapered shank portion. 2. The attachment structure according to claim 1 , further comprising: a sealing element provided in the circumferential groove. 3. The attachment structure according to claim 1 , wherein the circumferential groove is empty without containing a sealing element.
Assignees
Inventors
Classifications
Seals · CPC title
- B23Q11/1015Primary
by supplying a cutting liquid through the spindle · CPC title
- B23Q5/04Primary
rotary shafts, e.g. working-spindles · CPC title
Conducting channel extending to end of Tool · CPC title
- B23B31/263Primary
by means of balls · CPC title
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Frequently asked questions
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- What does patent US9511462B2 cover?
- There is provided an attachment structure for a main spindle and a tool holder of a machine tool. The tool holder is attached to the main spindle by a tapered shank portion of the tool holder being inserted into a tapered hole formed in the main spindle of the machine tool. At least one circumferential groove is formed in at least one of the tapered hole and an inner wall of the main spindle.
- Who is the assignee on this patent?
- Fanuc Corp
- What technology area does this patent fall under?
- Primary CPC classification B23Q11/1015. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 06 2016 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).