US 4,396,315 AGranted

Cutting tools

OwnerBurton E. Middletoninventor

Life of this patent

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Abstract

A precision high velocity cutting tool having indexable inserts or cutting bits includes a replaceable cutting section or insert holding nest that is made of a material that is harder and stronger than that from which it is economical to make the major cutter body. The nest is easily replaced without removing the cutter body from the drive shaft or spindle. Two holding screws retain the nest on the cutter body, one of them also securing an indexable cutter insert in cooperation with a reversible clamp. The nest facilitates the replacement of that portion of the cutter body that tends to deteriorate most rapidly and enables the replacement to be confined to the damaged area of the tool. A shaver blade is included that effects, in cooperation with the main cutting inserts of the cutting tool, smoother cutting, providing a finish approximately a planed surface.

Claims23

Dependent claims

A cutting tool comprising a cutter body having a forward face, a rearward face, and opposed outer edges, said cutter body having a cutting region comprising,

a first recess formed in one of said faces adjacent at least one of said outer edges,
tap means in said first recess,
a replaceable cutting insert positioned in said first recess, said cutting insert being made of a material that is stronger than the material of which said cutter body is made, said cutting insert having angularly disposed wall means forming a second recess with a seat and bed therein, said bed extending from an outer edge of said second recess to said seat, and said wall means having first bore means therein in alignment with said tap means,
a clamp member positioned in said second recess and having second bore means therein in alignment with said first bore means in said wall means, and
bolt means including a first bolt extending through said first bore means and said second bore means into engagement with said tap means to draw said clamp member into engagement with a cutter insert disposed on said bed and seat with a cutting edge disposed outwardly of said second recess.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/261,490Filed 7 May 1981
Granted: 2 Aug 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B27B 33/20
Sawing tools for saw mills, sawing machines, or sawing devices: edge trimming saw blades or tools combined with means to disintegrate waste
B27L 11/005
Manufacture of wood shavings, chips, powder, or the like ; Tools therefor: tools therefor
Y10T 407/1922
With separate means to fasten tool to holder: wedge clamp element
Y10T 407/23
Cutters, for shaping: including tool having plural alternatively usable cutting edges

Family

No related US applications are recorded in the indexed filing history.

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