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US 9,868,158 B2Granted
Automatic balancing device for boring heads
AssigneeKennametal Inc.
InventorsMarcelo Euripedes da Silva, Elio Andia
Life of this patent
Estimating the term…
Abstract
A boring head includes a housing having a first end configured to be coupled to a machine tool and a second end positioned opposite from the first end with the housing defining a central passageway. The boring head also includes a diameter adjustment mechanism comprising a sliding holder received by the housing and movable relative to the housing with the sliding holder configured to be coupled to a cutting insert and a balancing mechanism having a balancing mass. The balancing mechanism is configured to move the balancing mass when the sliding holder is moved. The balancing mass is aligned with the sliding holder in a direction extending about perpendicular to a longitudinal axis of the housing.
Claims19
A boring head comprising:
- a housing having a first end configured to be coupled to a machine tool and a second end positioned opposite from the first end, the housing defining a central passageway;
- a diameter adjustment mechanism comprising a sliding holder received by the housing and movable relative to the housing, the sliding holder configured to be coupled to a cutting insert;
- a balancing mechanism comprising a balancing mass, the balancing mechanism being configured to move the balancing mass when the sliding holder is moved, the balancing mass being aligned with the sliding holder in a direction extending about perpendicular to a longitudinal axis of the housing;
- the balancing mechanism comprising a lever disposed between the sliding holder and the balancing mass, the lever being rotatable about a pivot;
- wherein the diameter adjustment mechanism further comprises a sliding pin received within the passageway of the housing, the sliding pin including an angled portion, the angled portion being oriented at a non-zero angle with respect to the longitudinal axis of the housing;
- wherein the sliding holder defines an opening having an angled surface that receives the angled portion of the sliding pin;
- and
- wherein movement of the angled portion of the sliding pin in a first direction, and engagement of the angled portion with the angled surface, causes:
- radial movement of the sliding holder in a second direction;
- and
- displacement of the lever to effect radial movement of the balancing mass in a third direction which is opposite to the second direction;
- wherein the radial movement of the sliding holder is transferred to the balancing mass via rotation of the lever about the pivot.
9 more elements
A boring head comprising:
- a housing having a first end configured to be coupled to a machine tool and a second end positioned opposite from the first end, the housing defining a central passageway;
- a diameter adjustment mechanism comprising:
- a sliding holder received by the housing and movable relative to the housing, the sliding holder configured to be coupled to a cutting insert;
- a balancing mass;
- a lever disposed between the sliding holder and the balancing mass, the lever being rotatable about a pivot;
- a sliding pin received within the passageway of the housing, the sliding pin having a main body, an angled portion extending from the main body, and a translation member having a threaded surface;
- the angled portion of the sliding pin being oriented at a non-zero angle with respect to the longitudinal axis of the housing;
- a dial received by the housing and rotatable relative to the housing, the dial having a threaded surface that cooperates with the threaded surface of the translation member, wherein rotation of the dial causes movement of the sliding pin;
- wherein the sliding holder defines an opening having an angled surface that receives the angled portion of the sliding pin;
- and
- wherein movement of the angled portion of the sliding pin in a first direction, and engagement of the angled portion with the angled surface, causes:
- radial movement of the sliding holder in a second direction;
- and
- displacement of the lever to effect radial movement of the balancing mass in a third direction which is opposite to the second direction;
- wherein the radial movement of the sliding holder is transferred to the balancing mass via rotation of the lever about the pivot.
12 more elements
A method of automatically balancing a boring head having a housing, a sliding pin, and a diameter adjustment mechanism comprising a sliding holder movable relative to the housing and configured to be coupled to a cutting insert, the method comprising:
- connecting a balancing mass to the sliding holder via a lever that transmits radial movement of the sliding holder to the balancing mass, the lever being rotatable about a pivot;
- and
- aligning the balancing mass with the sliding holder in a direction extending about perpendicular to a longitudinal axis of the housing;
- wherein the diameter adjustment mechanism further comprises a sliding pin received within the passageway of the housing, the sliding pin including an angled portion, the angled portion being oriented at a non-zero angle with respect to the longitudinal axis of the housing;
- wherein the sliding holder defines an opening having an angled surface that receives the angled portion of the sliding pin;
- and
- wherein movement of the angled portion of the sliding pin in a first direction, and engagement of the angled portion with the angled surface, causes:
- radial movement of the sliding holder in a second direction;
- and
- displacement of the lever to effect radial movement of the balancing mass in a third direction which is opposite to the second direction;
- wherein movement of the sliding holder is transferred to the balancing mass via rotation of the lever about the pivot.
8 more elements
Dependencies are inferred from the claim text.