Groove cutter

Claim 2

In combination with a cutting tool, especially for forming grooves; a holder having a shank at one end and a tool head at the other end, a diametral axial slot extending into the holder from the head end and terminating in shoulders facing the open end of the slot, a pair of blade holders in the form of plates having opposed interengaging faces and extending axially into said slot and having inner ends engaging respective ones of said shoulders and having outer ends protruding axially from the tool head, a clamp screw extending diametrally through the tool head and said plates and operable for drawing the two sides of the tool head forming the slot toward one another to clamp the said plates therebetween, a transverse groove in the outwardly facing side of each plate within the axial range of the tool head and each having a surface which inclines downwardly in the inward direction of the respective plate, and other screws threaded angularly into said head and at the inner ends engaging said surfaces to clamp the plates against said shoulders, laterally elongated apertures provided in each of said plates, said clamping screws extending through said apertures, each said plate being adapted for supporting a cutting element on the radially outer side of the axially outer end, said plates overlapping when viewed in a direction perpendicular to the planes thereof.

Claim 3

A cutting tool according to claim 1 which includes laterally elongated apertures in each said plates, said clamping screws extending through said apertures.

Claim 4

A cutting tool according to claim 1 in which each said plate is adapted for supporting a cutting element on the radially outer side of the axially outer end, said plates overlapping when viewed in a direction perpendicular to the planes thereof.

Claim 5

A cutting tool according to claim 1 in which the said clamp screw is near the axially outer end of said tool head, and the said grooves in said plates are disposed near the axially inner ends of said plates adjacent the respective shoulders abutted by the plates and axially inwardly from the clamp screw.

Claim 6

A cutting tool according to claim 1 in which said axial slot in said holder terminates at the axially inner end in a diametral bore axially inwardly from said shoulders and of a greater diameter than the lateral distance between said shoulders.

Claim 7

A cutting tool in combination according to claim 1 in which each plate has a laterally elongated aperture through which the clamp screw extends, each plate extending axially outwardly from the head end of the tool and having means at the axially outer end on the radially outer side for supporting a cutting element, said axially outwardly projecting portions of said plates when viewed in a direction perpendicular to the planes thereof being narrower than the tool head.

Claim 8

A cutting tool according to claim 4 in which said other screws include a pair of laterally spaced screws for each plate positioned to engage the respective plates near the side edges of the plates.

Claim 9

In a cutting tool, especially for forming grooves; a holder having a shank at one end and a tool head at the other end, a diametral axial slot extending into the holder from the head end and terminating in shoulders facing the open end of the slot, a pair of blade holders in the form of plates having opposed interengaging faces and extending axially into said slot and having inner ends engaging respective ones of said shoulders and having outer ends protruding axially from the tool head, a clamp screw extending diametrally through the tool head and said plates and operable for drawing the two sides of the tool head forming the slot toward one another to clamp the said plates therebetween, a transverse groove in the outwardly facing side of each plate within the axial range of the tool head and each having a surface which inclines downwardly in the inward direction of the respective plate, and other screws threaded angularly into said head and at the inner ends engaging said surfaces to clamp the plates against said shoulders, each plate having a laterally elongated aperture through which the clamp screw extends, each plate extending axially outwardly from the head end of the tool and having means at the axially outer end on the radially outer side for supporting a cutting element, said axially outwardly projecting portions of said plates when viewed in a direction perpendicular to the planes thereof being narrower than the tool head, and a blade setting fixture adapted for being clamped on said head and having screw threaded abutment elements therein adapted for engagement with the side edges of said blades, said abutment elements being adapted for adjusting said blades in the planes thereof on the holder when the said clamp screw and other screws are loosened.

Claim 10

In a cutting tool, especially for forming grooves; a holder having a shank at one end and a tool head at the other end, a diametral axial slot extending into the holder from the head end and terminating in shoulders facing the open end of the slot, a pair of blade holders in the form of plates having opposed interengaging faces and extending axially into said slot and having inner ends engaging respective ones of said shoulders and having outer ends protruding axially from the tool head, a clamp screw extending diametrally through the tool head and said plates and operable for drawing the two sides of the tool head forming the slot toward one another to clamp the said plates therebetween, a transverse groove in the outwardly facing side of each plate within the axial range of the tool head and each having a surface which inclines downwardly in the inward direction of the respective plate, and other screws threaded angularly into said head and at the inner ends engaging said surfaces to clamp the plates against said shoulders, each plate having a laterally elongated aperture through which the clamp screw extends, each plate extending axially outwardly from the head end of the tool and having means at the axially outer end on the radially outer side for supporting a cutting element, said axially outwardly projecting portions of said plates when viewed in a direction perpendicular to the planes thereof being narrower than the tool head, and a blade setting fixture adapted for being clamped on said head and having screw threaded abutment elements therein adapted for engagement with the side edges of said blades, said abutment elements being adapted for adjusting said blades in the planes thereof on the holder when the said clamp screw and other screws are loosened.