Cutting tool

Claim 2

A thread cutting tool including a thread cutting insert and insert holding means, said insert having a cutting tip formed at one end for cutting a thread in a work piece, a component of the force on said insert resulting from the engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second support surface formed at an acute angle relative to said first support surface, said second support surface engaging said insert at the end thereof opposite said tip and acting on said opposite end in a direction generally parallel to the direction of said force component.

Claim 3

The cutting tool set forth in claim 1 wherein said insert has a second face formed at an actue angle relative to said first face, said holding means having a third support surface lying in a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface.

Claim 4

A thread cutting tool including a thread cutting insert and insert holding means, said insert having a cutting tip formed at each end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from the engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite the end which contacts said work piece, said insert having a second face formed at an acute angle relative to said first face, said holding means having a third support surface lying iN a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface, and said cutting tips being formed by intersecting faces on said insert, said intersecting faces being formed at substantially the same angle for each of said cutting tips, said second surface being complimentary to one of the faces of each of said cutting tips, said second surface being engageable with one face of one cutting tip when the insert is in position on said insert holding means and acting on said one face generally in the same direction as said force component.

Claim 5

A thread cutting tool including a thread cutting insert and insert holding means, said insert having a cutting tip formed at each end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from the engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite the end which contacts said work piece, said insert having a second face formed at an acute angle relative to said first face, said holding means having a third support surface lying iN a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface, and said cutting tips being formed by intersecting faces on said insert, said intersecting faces being formed at substantially the same angle for each of said cutting tips, said second surface being complimentary to one of the faces of each of said cutting tips, said second surface being engageable with one face of one cutting tip when the insert is in position on said insert holding means and acting on said one face generally in the same direction as said force component.

Claim 6

The cutting tool set forth in claim 2 wherein said insert has a third face on the side thereof opposite said first face and releaseable clamping means on said insert holding means and face engageable with said third insert face.

Claim 7

The cutting tool set forth in claim 2 wherein said second surface lies in the plane which intersects each of said first and third surfaces at an acute angle.

Claim 8

A thread cutting tool including a thread cutting insert and insert holding means, said insert having a cutting tip formed at one end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite said tip and acting on said opposite end generally in the same direction as said force component, said insert having a second face formed at an acute angle relative to said first face, said holding means having a third support surface lying in a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface, and said holding means including a first holding member and a second holding member removably mounted on said first holding member, said first and second surfaces being formed on said second holding member and said third surface being formed on said first holding member.

Claim 9

A thread cutting tool including a thread cutting insert and insert holding means, said insert having a cutting tip formed at one end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite said tip and acting on said opposite end generally in the same direction as said force component, said insert having a second face formed at an acute angle relative to said first face, said holding means having a third support surface lying in a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface, and said holding means including a first holding member and a second holding member removably mounted on said first holding member, said first and second surfaces being formed on said second holding member and said third surface being formed on said first holding member.

Claim 10

The cutting tool set forth in claim 1 wherein said insert has a clamping face on the side thereof opposite said first face and releaseable clamping means on said insert holding means and face engageable with said clamping face.

Claim 11

A thread cutting tool including a thread cutting insert and insert holding means, said insert having cutting tips formed at each end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from the engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite the end which contacts said work piece, and said cutting tips being formed by intersecting faces on said insert, said intersecting faces being formed at substantially the same angle for each of said cutting tips, said second surface being complimentary to one of the faces of each of said cutting tips, said second surface being engageable with one face of one cutting tip when the insert is in position on said insert holding means and acting on said one face generally in the same direction as said force component.

Claim 12

A thread cutting tool including a thread cutting insert and insert holding means, said insert having cutting tips formed at each end for cutting a thread in a rotating work piece, a component of the force on said insert resulting from the engagement between said insert and said work piece being directed in a first direction, said insert holding means having a first support surface, said insert having a first face on the side thereof away from the direction of said force component and engaging said first support surface, said insert holding means having a second surface engaging said insert at the end thereof opposite the end which contacts said work piece, and said cutting tips being formed by intersecting faces on said insert, said intersecting faces being formed at substantially the same angle for each of said cutting tips, said second surface being complimentary to one of the faces of each of said cutting tips, said second surface being engageable with one face of one cutting tip when the insert is in position on said insert holding means and acting on said one face generally in the same direction as said force component.

Claim 13

The cutting tool set forth in claim 8 wherein said insert has a clamping face on the side thereof opposite said first face and releaseable clamping means on said insert holding means and face engageable with Said clamping insert face.

Claim 14

The cutting tool set forth in claim 9 wherein said insert has a second face formed at an acute angle relative to said first face, said holding means having a third support surface lying in a plane generally parallel to said first direction, said third support surface being formed at an acute angle relative to said second support surface, said second face engaging said third support surface.

Claim 15

The cutting tool set forth in claim 10 wherein said holding means includes a first holding member and a second holding member removably mounted on said first holding member, said first and second surfaces being formed on said second holding member and said third surface being formed on said first holding member.

Claim 16

The cutting tool set forth in claim 11 wherein said second surface lies in the plane which intersects each of said first and third surfaces at an acute angle.

Claim 17

The thread cutting tool set forth in claim 12 wherein said holding means has a longitudinal axis, means for mounting said insert with said second face disposed at a predetermined acute angle relative to said longitudinal axis, the faces forming said cutting tip intersecting at a second acute angle, said first and second acute angles being substantially equal whereby the plane passing through the intersection of said first and second surfaces and parallel to the longitudinal axis of said holder bisects an angle formed by said faces.

Claim 18

The cutting tool set forth in claim 13 wherein the first and second angles are each substantially 60*.