Inserted blade cutter

Claim 2

A cutting tool assembly including a holder and removable cutting blade, the tool holder including a slot extending longitudinally from one extremity thereof, the slot terminating in a base portion which includes a pair of accurately machined flat locating surfaces disposed on intersecting planes, the cutting blade including longitudinally extending cutting edge means adapted to extend radially of the tool holder beyond the longitudinal edges of the slot when positioned therein, the base of the blade including a pair of accurately machined flat locating surfaces disposed on intersecting planes, the locating surfaces of the blade and the slot forming complementary, mating abutment means, threaded fastening means extending through the apices of the mating surfaces and adapted to clamp the blade and holder together, fastening means extending transverse the slot to clampingly retain the blade between the sides of the slot.

Claim 3

The cutting tool assembly of claim 1, wherein the slot is coincident with the longitudinal axis of the holder.

Claim 4

The cutting tool assembly of claim 1, wherein the apices of the locating surfaces of the tool holder and blades are generally located on a plane including the longitudinal axes of the holder and blade respectively.

Claim 5

The cutting tool assembly of claim 3, wherein the longitudinal axes of the holder and blade are coincident.

Claim 6

The cutting tool assembly of claim 1, wherein the threaded fastening means extend along the longitudinal axes of the blade and holder.

Claim 7

The cutting tool assembly of claim 1, wherein the locating surfaces extend in planes which are disposed generally perpendicularly to the plane of the slot.

Claim 8

The cutting tool assembly of claim 1, wherein the locating surfaces on the tool holder extend at an angle of approximately 90* to each other.

Claim 9

The cutting tool assembly of claim 1, wherein the threaded fastening means comprises a threaded bore formed in the base of the blade through the apex of the intersecting planes and a mating threaded fastener extending through a bore at the apex of the intersecting planes of the slot to pull and clamp the blade and holder together so that the blade is accurately aligned and supported thereby.

Claim 10

The cutting tool assembly of claim 1, wherein the blade includes a pair of identical form type cutting edges protruding from the edges of the slot.

Claim 11

A cutting tool assembly including a holder and removable cutting blade, the tool holder including a slot extending longitudinally from one extremity and coincident with the longitudinal axis thereof, the slot terminating in a base portion which includes a pair of accurately machined locating surfaces disposed on planes intersecting at an angle of approximately 90*, the apex of these planes located on the longitudinal axis Of the holder with the surfaces diverging away from said one extremity of the tool holder, the cutting blade including a pair of longitudinally extending cutting edges adapted to extend radially of the tool holder beyond the longitudinal edges of the slot when the blade is positioned and retained therein, the base of the blade formed with a recess including a pair of accurately machined locating surfaces disposed on planes intersecting at an angle of approximately 90*, the apex of these planes located on the longitudinal axis of the blade, the locating surfaces of the blade and slot forming complementary mating abutment and alignment means, a bore extending from the other extremity of the tool holder intersecting and extending through the base of the slot generally along the longitudinal axis of the holder, a threaded aperture extending along the longitudinal axis of the blade from the recess in the base of the blade, a threaded bolt member inserted through the bore in the base of the slot operatively engaging the complementary threaded aperture to clamp the locating surfaces together and accurately align the blade within the slot, the holder including holes extending therethrough aligned with a hole in the blade so that a fastening member may be associated with the aligned holes to clamp the blade within and between the sides of the slot.

Claim 12

A cutting tool assembly including a holder and removable cutting blade, the tool holder including a slot extending longitudinally from one extremity and coincident with the longitudinal axis thereof, the slot terminating in a base portion which includes a pair of accurately machined locating surfaces disposed on planes intersecting at an angle of approximately 90*, the apex of these planes located on the longitudinal axis Of the holder with the surfaces diverging away from said one extremity of the tool holder, the cutting blade including a pair of longitudinally extending cutting edges adapted to extend radially of the tool holder beyond the longitudinal edges of the slot when the blade is positioned and retained therein, the base of the blade formed with a recess including a pair of accurately machined locating surfaces disposed on planes intersecting at an angle of approximately 90*, the apex of these planes located on the longitudinal axis of the blade, the locating surfaces of the blade and slot forming complementary mating abutment and alignment means, a bore extending from the other extremity of the tool holder intersecting and extending through the base of the slot generally along the longitudinal axis of the holder, a threaded aperture extending along the longitudinal axis of the blade from the recess in the base of the blade, a threaded bolt member inserted through the bore in the base of the slot operatively engaging the complementary threaded aperture to clamp the locating surfaces together and accurately align the blade within the slot, the holder including holes extending therethrough aligned with a hole in the blade so that a fastening member may be associated with the aligned holes to clamp the blade within and between the sides of the slot.

Claim 13

The cutting tool assembly of claim 10, wherein the cutting edges are of a predetermined form and tapered toward the longitudinal axis of the blade with the narrowest portion of the blade on the extremity opposite the base of the blade and wherein the form on each cutting edge is substantially identical to accurately cut a predeterming profile in an associated workpiece through rotation of the holder about its longitudinal axis.