# US 9,752,725 B2 · Machine tool provided with a protection cover

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- Number: US 9,752,725 B2
- Document ID: US9752725B2
- Status: Granted
- Kind: B2
- Application number: 14/792,675
- Filed: 2015-07-07
- Published: 2016-01-14
- Granted: 2017-09-05
- Earliest claimed: 2014-07-08
- Assignees: Fanuc Corporation
- Applicants: FANUC Corporation
- Inventors: Zheng Tong
- Web page: https://patentgrep.com/patent/US9752725B2

## CPC

- F16N 29/02: for influencing the supply of lubricant
- B23Q 11/0825: {Relatively slidable coverings, e.g. telescopic}
- B23Q 11/121: {with lubricating effect for reducing friction (F16C33/66 and F16H57/04 take precedence)}
- F16N 7/02: with gravity feed or drip lubrication
- B23Q 1/621: {a single sliding pair followed perpendicularly by a single sliding pair}
- Y10T 409/30392: with means to protect operative or machine [e.g., guard, safety device, etc.]
- Y10T 409/303976: with means to control temperature or lubricate
- F16N: LUBRICATING
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided is a machining tool having a telescopic cover, with a plurality of covers sequentially overlapped and telescopic in the moving direction of the movable portion of the machine tool. The machining includes a lubricant supply unit to supply a lubricant to a slide portion of the telescopic cover.

## Claims

### Claim 1

A machining tool, comprising:
a telescopic cover having a plurality of covers sequentially overlapped and telescopic in a moving direction of a movable portion of the machine tool; and
lubricant supply units configured to supply a lubricant to a surface of the telescopic cover,
wherein
the telescopic cover has
a fixed part, and
a moving part movable in the moving direction relative to the fixed part, and
the lubricant supply units are installed at both the moving part and the fixed part of the telescopic cover.

### Claim 2 (depends on 1)

The machining tool according to claim 1, further comprising:
a lubricant supply amount adjustment unit configured to adjust an amount of the lubricant supplied to the surface of the telescopic cover by the lubricant supply units.

### Claim 3 (depends on 2)

The machining tool according to claim 2, wherein
the lubricant supply amount adjustment unit is configured to adjust the amount of the lubricant based on a drip position of the lubricant on the surface of the telescopic cover.

### Claim 4 (depends on 2)

The machining tool according to claim 2, wherein
the lubricant supply amount adjustment unit is configured to adjust the amount of the lubricant based on a machining condition of the machining tool.

### Claim 5 (depends on 2)

The machining tool according to claim 2, wherein
the lubricant supply amount adjustment unit is controllable to adjust the amount of the lubricant based on a material of a workpiece to be machined by the machining tool.

### Claim 6 (depends on 2)

The machining tool according to claim 2, wherein
the lubricant supply amount adjustment unit is configured to adjust the amount of the lubricant based on an operation time of the machining tool.

### Claim 7 (depends on 1)

The machining tool according to claim 1, further comprising:
a lubricant drip frequency adjustment unit configured to adjust a lubricant supply frequency of the lubricant from the lubricant supply units to the surface of the telescopic cover.

### Claim 8 (depends on 7)

The machining tool according to claim 7, wherein
the lubricant drip frequency adjustment unit is configured to adjust the lubricant supply frequency based on a dripping point of the lubricant on the surface of the telescopic cover.

### Claim 9 (depends on 7)

The machining tool according to claim 7, wherein
the lubricant drip frequency adjustment unit is configured to adjust the lubricant supply frequency based on a machining condition of the machining tool.

### Claim 10 (depends on 7)

The machining tool according to claim 7, wherein
the lubricant drip frequency adjustment unit is controllable to adjust the lubricant supply frequency based on a material of a workpiece to be machined by the machining tool.

### Claim 11 (depends on 7)

The machining tool according to claim 7, wherein
the lubricant drip frequency adjustment unit is configured to adjust the lubricant supply frequency based on an operation time of the machining tool.