Metal boring tool

Details Metal boring tool Metal boring tool

1984-11-29

1986-11-11

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

408147, 408197, 408713, 408239R, 407 46, 407 48, 407109, B23B 2903

Patent

active

046219587

ABSTRACT:
A boring block and tool holder is disclosed having an opening therein. The block is made of a thick rectangular plate having inserts set into its front corners and inclined surfaces adjacent its rear edge forming a noncircular tang part having two rearwardly facing shoulders adjacent the tang portion which is received in a slot in a boring bar. The shape of the slot is complimentary to the shape of the tang part of the block. A tapered hole through the tang aligns with a tapered hole in the boring bar and the tapered hole in the block receives a taper pin which forces the block rearward bringing the block into firm rigid relationship with the end of the bar thereby clamping the block in positive rigid relation to the bar. The block has more strength than previous blocks because the block is thicker below the cutting inserts and there is more metal below the cutting insert, yet it can use the same bar and same slot width as rectangular blocks.

REFERENCES:
patent: 1392304 (1921-10-01), Davis
patent: 1881024 (1932-10-01), Lang
patent: 3617144 (1971-11-01), Koppelman
patent: 3704958 (1972-12-01), Gulibon et al.
patent: 3785746 (1974-01-01), Wolf et al.

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