Conical reamer
AssigneeMapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG
InventorsDieter Kress, Friedrich Haberle
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Abstract
A conical reamer having an elongated, longitudinally tapering head formed with two longitudinal flutes and rotated about its longitudinal axis by an integral shank portion. An axially elongated groove continuously adjacent each flute is open in a forward, and closed in a rearward direction and receives an axially elongated, reversible cutting blade having a cutting edge exposed in the flute. A frontal end face of the blade diverges obliquely from a plane perpendicular to the reamer axis at one acute angle in a radial direction toward the axis, and at a second acute angle in a direction circumferential relative to the axis. The end face is conformingly engaged in area contact by an abutment face of a clamping ring under the pressure of a clamping screw on the head.
Claims6
A conical reamer comprising:
- (a) an elongated, longitudinally tapering head formed with a plurality of longitudinal flutes;
- (b) means for rotating said head about a longitudinal axis, said head being formed with an axially elongated groove contiguously adjacent each flute, each groove being open in a forward axial direction and closed in a rearward axial direction;
- (c) an axially elongated cutting blade received in each groove, a portion of each blade including a cutting edge terminating at a blade face exposed in the adjacent flute,
- (1) said blade having a frontal end face diverging obliquely from a plane perpendicular to the direction of blade elongation at a first, acute angle in a radial direction toward said axis, and at a second acute angle in a circumferential direction relative to said axis;
- (d) a clamping member having an abutment face conforming with said end face of said blade and arranged in area contact therewith to hold said blade within said groove;
- and
- (e) clamping means on said head urging said abutment face axially rearward and against said end face of said blade.
Dependencies are inferred from the claim text.