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| United States Patent |
6,437,286
|
|
Scott
|
August 20, 2002
|
Slag collection and removal system for a heavy duty laser-equipped machine
tool
Abstract
An insulated slag collection bed and scrap removal system for a high
powered laser-equipped machine tool. The slag collection bed serves as a
shield to absorb remnant laser energy which would otherwise strike the
machine base. The shield is thermally insulated from the machine base so
as to protect the machine base from the temperature rise in the shield
resulting from absorbing the remnant laser energy. If, over time the
shield is damaged or worn, apparatus is provided for ready replacement of
both the shield and the insulation. The scrap removal system has a home
position in which all of its components, including a scraper assembly and
a drive are out of the range of the laser beam, so that they are protected
from laser damage. The drive is energized to pull a scraper assembly
through the machine with a plow having a lower surface in contact with the
stationary collection bed for scraping slag and pushing it toward the open
end of the machine. When the machine reaches the end of its travel, the
drive, as it continues its motion, automatically raises the plow, pushes
the scrap off the end, then returns to its home and protected position,
with the plow out of contact with the collection bed so as not to pull
debris back into the machine.
| Inventors:
|
Scott; William B. (Rochelle, IL)
|
| Assignee:
|
W. A. Whitney Co. (Rockford, IL)
|
| Appl. No.:
|
648309 |
| Filed:
|
August 25, 2000 |
| Current U.S. Class: |
219/121.82 |
| Intern'l Class: |
B23K 026/16; B23K 026/36 |
| Field of Search: |
219/121.67,121.72,121.82
|
References Cited
U.S. Patent Documents
| 4452115 | Jun., 1984 | Bredow | 83/157.
|
| 4659902 | Apr., 1987 | Swensrud et al.
| |
| 5585015 | Dec., 1996 | Hayashi et al. | 219/121.
|
| 5637243 | Jun., 1997 | Sato et al. | 219/121.
|
| 5648002 | Jul., 1997 | Omote | 219/121.
|
| 5756961 | May., 1998 | Sato et al. | 219/121.
|
| 5854460 | Dec., 1998 | Graf et al. | 219/212.
|
| Foreign Patent Documents |
| 6-99296 | Aug., 1986 | JP.
| |
| 5-161990 | Jun., 1993 | JP.
| |
| 6-99296 | Apr., 1994 | JP.
| |
| 7-155991 | Jun., 1995 | JP.
| |
| 8-132271 | May., 1996 | JP.
| |
Other References
Laser Cutting Heavy Plate, Industrial Laser Review, Aug. 1995.
Trumpf Brochure Five Axes Laser Processing Center, No Publication Date.
|
Primary Examiner: Evans; Geoffrey S.
Attorney, Agent or Firm: Leydig, Voit & Mayer, Ltd.
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