Replaceable face-milling head with integrally formed threaded shank-connector
AssigneeIscar, Ltd.
InventorsJacob Harpaz, Eliyahu Budda, Ely Erlich
Life of this patent
Estimating the term…
Abstract
A replaceable face-milling head configured for rotating about a central rotation axis AR. The head includes a cutting portion and an integrally formed threaded shank-connector portion, the latter of which being configured for connecting to a shank. A length-diameter ratio LDR, defined as a cutting portion length LC divided by a cutting portion diameter DE, fulfills the condition: LDR≤1.00.
Claims23
A replaceable face-milling head configured for rotating about a central rotation axis AR defining opposite axially forward and rearward directions DF, DR and opposite rotational preceding and succeeding directions DP, DS, the preceding direction DP being the cutting direction, the face-milling head comprising:
- a head rear face, a head front face and a head peripheral surface extending from the head rear face to the head front face;
- a shank-connector portion formed with external threading and extending forward from the head rear face;
- a cutting portion integrally formed with the shank-connector portion and extending forward from the shank-connector portion to the head front face, the cutting portion comprising a rearwardly facing cutting portion annular surface surrounding the shank-connector, the annular surface located at an intersection where the cutting portion and the shank-connector meet;
- a cutting portion length LC measurable parallel to the central rotation axis AR, from the intersection to the head front face;
- and
- a perpendicular plane PP adjacent the front face and extending perpendicular to the central rotation axis AR;
- the cutting portion comprising:
- a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face;
- a plurality of flutes alternating with the plurality of teeth;
- and
- a cutting portion diameter DE;
- characterized in that a length-diameter ratio LDR defined as the cutting portion length LC divided by the cutting portion diameter DE fulfills the condition:
- 0.3≤LDR≤1.00.
A replaceable face-milling head configured for rotating about a central rotation axis AR defining opposite axially forward and rearward directions DF, DR and opposite rotational preceding and succeeding directions DP, DS, the preceding direction DP being the cutting direction, the face-milling head comprising:
- a head rear face, a head front face and a head peripheral surface extending from the head rear face to the head front face;
- a shank-connector portion formed with external threading and extending forward from the head rear face;
- a cutting portion integrally formed with the shank-connector portion and extending forward from the shank-connector portion to the head front face;
- a cutting portion length LC measurable parallel to the central rotation axis AR;
- and
- a perpendicular plane PP adjacent the front face and extending perpendicular to the central rotation axis AR;
- the cutting portion comprising:
- a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face;
- a plurality of flutes alternating with the plurality of teeth;
- and
- a cutting portion diameter DE;
- wherein:
- a length-diameter ratio LDR defined as the cutting portion length LC divided by the cutting portion diameter DE fulfills the condition:
- 0.3≤LDR≤0.9.
A replaceable face-milling head configured for rotating about a central rotation axis AR defining opposite axially forward and rearward directions DF, DR and opposite rotational preceding and succeeding directions DP, DS, the preceding direction DP being the cutting direction, the face-milling head comprising:
- a head rear face, a head front face and a head peripheral surface extending from the head rear face to the head front face;
- a shank-connector portion formed with external threading and extending forward from the head rear face;
- a cutting portion integrally formed with the shank-connector portion and extending forward from the shank-connector portion to the head front face;
- a cutting portion length LC measurable parallel to the central rotation axis AR;
- and
- a perpendicular plane PP adjacent the front face and extending perpendicular to the central rotation axis AR;
- the cutting portion comprising:
- a plurality of integrally formed teeth, each of the teeth comprising a primary cutting edge at the head front face;
- a plurality of flutes alternating with the plurality of teeth;
- and
- a cutting portion diameter DE;
- wherein:
- a length-diameter ratio LDR defined as the cutting portion length LC divided by the cutting portion diameter DE fulfills the condition:
- 0.3≤LDR≤1.0;
- and
- each tooth of the plurality of teeth further comprises:
- a relief edge extending along the peripheral surface;
- a convexly curved outer corner connected to the relief edge and comprising a radial extremity point of the cutting portion, the primary cutting edge connected to, and extending in a forward-inward direction from, the outer corner;
- a convexly curved inner corner connected to the primary cutting edge;
- and
- a ramping cutting edge connected to, and extending in a rearward-inward direction from, the inner corner.
Dependencies are inferred from the claim text.