Gear cutting – milling – or planing – Milling – With means to remove chip
Patent
1982-09-29
1988-04-19
Briggs, William R.
Gear cutting, milling, or planing
Milling
With means to remove chip
408 67, 408710, 409182, B23C 120, B23B 4734
Patent
active
047385715
ABSTRACT:
In a preferred form, the dust extraction system is intended to be used in combination with a conventional router. The system includes a plate, one side of which confronts the router's ring base. The plate has a relatively small hole through which the cutter bit extends and an offset larger hole through which dust-laden air is withdrawn. A recessed sub base, preferably of plastic, confronts the other side of the plate, the sub base also having a relatively large hole through which the bit extends. Both the plate and the sub base conform in shape to each other, having portions extending laterally to one side of the router's base. The offset hole in the plate is formed in its laterally extending portion and the recess or cavity in the sub base, forming a passage with the overlying plate, extends to this hole. A sleeve surrounding the hole enables a source of subatmospheric pressure to be connected in order to extract the dust produced by the router's bit. Provision is made for mounting the router for reciprocal movement toward and away from a frame on which the work is placed. An actuating mechanism which includes a spring normally biases the router in the direction of the frame and the work disposed thereon, the sub base having a beveled edge so that the spring action can be overcome when the work is moved against the beveled edge.
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Olson Eugene T.
Olson Larry E.
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