Woodworking – Cutter hood or dust conveyor – With sifter – sorter – or separator
Patent
1994-08-05
1995-12-12
Bray, W. Donald
Woodworking
Cutter hood or dust conveyor
With sifter, sorter, or separator
83100, 409137, 451456, B27G 1900
Patent
active
054741165
ABSTRACT:
A chip removing apparatus for a machine tool by which strong spiral air flows are produced in a dust collection cover to compulsorily move chips upwardly into a chip sucking passage to remove the chips efficiently. The chip sucking passage is defined between a housing of a working head and a motor accommodated in the housing, and a tool chuck is connected to a rotary shaft of the motor. The dust collection cover is mounted at a lower portion of an outer periphery of the housing and surrounds the tool chuck with a dust collection space left therebetween. The chip sucking passage in communication at a lower portion thereof with an upper portion of the dust collection space, and is connected at an upper portion thereof to a suction duct. A plurality of pipes having injection openings opened to the dust collection space or a plurality of holes formed in a lower portion of the dust collection cover and opened to the dust collection space with an air supply passage formed in a wall of the dust collection cover and communicated with the holes are provided for injecting air in circumferential directions into the dust collection space to produce whirling air flows in the dust collection space.
REFERENCES:
patent: 4957148 (1990-09-01), Shoda
patent: 5069695 (1991-12-01), Austin
patent: 5100270 (1992-03-01), Dowdle et al.
patent: 5107910 (1992-04-01), Sasaki
Bray W. Donald
Shoda Iron Works Corporation
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