SPINDLE DEVICE

• US 20200130122A1
• Filed: 10/29/2019
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Murota, Masahiro
• Granted Patent: US 10,974,357 B2
• Time in Patent Office: Days
• CPC Class Codes: B23Q 1/70 Stationary or movable members for carrying working-spindles for attachment of tools or work B23Q1/01 takes precedence; designed to be moved by using particular mechanisms B23Q1/44
• CPC Class Codes: B23Q 11/0858 using a liquid bath or a liquid curtain
• CPC Class Codes: B23Q 11/127 for cooling motors or spindles
• CPC Class Codes: B23Q 3/08 other than mechanically-actuated B23Q3/061, B23Q3/066, and B23Q3/067 take precedence
• CPC Class Codes: B23Q 5/10 driven essentially by electrical means

Abstract

A chuck unit as a rotating member of a spindle device includes a base portion fixed to one end of the spindle shaft, an attaching portion detachably attached to a side of the base portion that is located on an opposite side of the base portion from the one end of the spindle shaft, and an accommodation space arranged on a communication passage so as to accommodate a filter.

Claims

1. A spindle device, comprising:

a spindle housing;

a spindle shaft having, formed therein, a suction passage configured to flow air suctioned from outside, the spindle shaft being configured to be rotatably supported inside the spindle housing; and

a rotating member having, formed therein, a communication passage configured to establish communication between the suction passage and the outside, the rotating member being provided at one end of the spindle housing so as to be rotatable in linkage with rotation of the spindle shaft,

wherein the rotating member includes;

a base portion fixed to one end of the spindle shaft;

an attaching portion detachably attached to a side of the base portion that is located on an opposite side of the base portion from the one end of the spindle shaft; and

an accommodation space arranged on the communication passage so as to accommodate a filter.

2. The spindle device according to claim 1, wherein the accommodation space is disposed between the base portion and the attaching portion.

3. The spindle device according to claim 2, wherein the accommodation space is exposed when the attaching portion is detached from the base portion.

4. The spindle device according to claim 1, wherein:

the communication passage includes;

a base-side passage configured to establish communication between the suction passage and the accommodation space; and

an attachment-side passage configured to establish communication between the accommodation space and a plurality of suction ports formed on a surface of the attaching portion that is located on an opposite side of the attaching portion from the base portion; and

the accommodation space is formed on a front side of the base portion.