Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1988-08-26
1990-03-20
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
407 11, 408 3, 408 57, 408 59, 408 67, 408 95, 408130, 408213, B23B 3500, B23B 4722, B23B 5106
Patent
active
049096788
ABSTRACT:
An apparatus for boring a laminated plate includes a table having a first surface on which a laminated plate may be placed for boring and an opposing second surface, the table defining at least one passage therethrough; a supporting pad for urging a laminated plate to be bored towards the first surface of the table; and a cutter for boring a laminated plate to be bored, the cutter operable to bore in a direction generally opposite to the direction that the supporting pad urges and through the passage defined by the table. Further according to the present invention, the cutter includes a knife edge, a pivotal mechanism adapted to be pivoted about its axial center line, and a stepping mechanism for moving the knife edge in one direction and unsuccessively further in a second direction so that successively deeper boring may be performed. Also according to the present invention, a boring cutter having an axial center line about which the cutter is operable to be rotated includes a cutting element having a modified round-bar shape. Still further, according to the present invention, a method of boring a multi-layer laminated plate includes the steps of pressing against the plate in one direction; and boring the the plate in a direction opposite to the direction in which it is pressed, the boring characterized in that a boring element is withdrawn between boring of each individual layer of the multi-layer plate.
REFERENCES:
patent: 2718689 (1955-09-01), Mason et al.
patent: 3120136 (1964-02-01), Bieker
patent: 3663114 (1972-05-01), Welsh et al.
patent: 4280775 (1981-07-01), Wood
patent: 4338050 (1982-07-01), Ozer et al.
patent: 4697964 (1987-10-01), Daiko et al.
patent: 4725171 (1988-02-01), DeTorre
"A Guide to Cutting and Machining Kevlar Aramid", E. I. du Pont de Nemours and Co., published prior to Jul., 1982.
Bishop Steven C.
Ushio Co, Ltd.
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