Cutting tool with insert and removable locking pin

Details Cutting tool with insert and removable locking pin Cutting tool with insert and removable locking pin

1991-11-19

1993-04-06

Bishop, Steven C.

Cutters, for shaping

Including holder having seat for inserted tool

With separate means to fasten tool to holder

407105, B23B 2716

Patent

active

051998289

ABSTRACT:
A cutting insert is mounted on a holder by means of a locking screw which enables inserts to be exchanged without completely removing the screw from the holder. The insert has a through-hole configured such that a lower end thereof is of cylindrical configuration and includes a tapered section located thereabove. The tapered section expands in cross-section in an upward direction. The locking screw includes a head, the outer surface of which engages the through-hole at diametrically opposite contact locations and imposes a downward force on the insert at each contact location. In one embodiment, the head includes cylindrical surface portions which engage the through-hole at both contact locations. In another embodiment, the head includes a surface expanding in cross-section in an upward direction which engages the through-hole at both contact locations. In a third embodiment, the head includes a cylindrical surface for engaging the through-hole at the first contact location, and an expanding surface for engaging the through-hole at the second contact location.

REFERENCES:
patent: 3341923 (1967-09-01), Kelm
patent: 3662444 (1972-05-01), Erkfritz
patent: 3740807 (1973-06-01), Getts
patent: 3913197 (1975-10-01), Wolf
patent: 4397592 (1983-08-01), Erickson
patent: 4427322 (1984-01-01), Kroll
patent: 4632606 (1986-12-01), Lagerberg
patent: 4869624 (1989-09-01), Viellet

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