Cutting tool and insert assembly
AssigneeGeneral Electric Company
InventorsDavid Cochrane Dick, Fred Bauer
Life of this patent
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Abstract
In cutting tools employing disposable inserts an indexing shoulder is generally provided on the body of the tool. When exposed to excessive force the shoulder may be damaged and the tool difficult to repair. This invention proposes a replaceable seat which is indexed to the tool, and wherein the seat is provided with an shoulder against which the insert is indexed. In the preferred embodiment the insert is provided with a transverse channel in its seating surface and the seal with a mating land. The arrangement provides for forward and reverse indexing of the insert, and is of particular utility in positive rake and tracer cutting tools.
Claims28
In a cutting tool having a body including a planar surface portion, a detachable seat having top and bottom surfaces contained in generally parallel planes, a disposable insert mounted on said seat, said insert having a front cutting edge and extending rearwardly from said edge in a generally axial direction, clamp means secured to said body for exerting a clamping pressure on said insert, the improvement wherein said seat is indexably secured to said planar surface by replaceable securing means, said seat having a forward facing shoulder generally transverse to said axial direction, and wherein said insert has a rearward facing shoulder abutting said seat shoulder.
A cutting tool comprising a body having an axially elongated pocket in an end thereof, said pocket being defined by a horizontal base and at least one axially aligned shoulder upstanding therefrom, a replaceable seat having top and bottom surfaces contained in generally parallel planes indexably secured in said pocket by replaceable securing means, said seat having a land portion intermediate the ends thereof, a disposable insert mounted on said seat, said insert having a forwardly disposed cutting edge and a lateral side surface abutting axially aligned shoulder, said insert having a channel opening to closely receive upstanding shoulders of said land portion, clamp means secured to said body for exerting a clamping pressure on said insert.
A disposable cutting insert having two axially separated ends, at least one cutting edge disposed at a one axial end, said insert having top and bottom generally parallel surfaces and a bounding side surface including generally opposed lateral portions, a channel opening in at least said bottom surface said channel opening having wall portions generally normal to said axial direction.
Dependencies are inferred from the claim text.