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US 9,849,518 B2Granted
Autobalancing system for boring tool and boring tool incorporating same
AssigneeKennametal Inc.
InventorMarcelo Euripedes Da Silva
Life of this patent
Estimating the term…
Abstract
A boring head (10) having a movement transmission mechanism for selectively moving a cutting insert (20) a desired amount. The movement transmission mechanism includes a rotatable member selectively radially displacing the cutting insert the desired amount in a first direction and a primary member selectively radially displacing a balancing mass (50) in a second direction opposite the first direction while also axially displacing the balancing mass. The displacement of the balancing mass in the second direction effectively counters the displacement of the cutting insert in the first direction such that rotational balance of the boring head is automatically maintained.
Claims11
A boring head comprising:
- a housing disposed about a central longitudinal axis, the housing having a first end adapted to be coupled to a machine tool and an opposite second end, the opposite second end having a moveable portion structured to have a cutting insert selectively coupled thereto;
- and
- a movement transmission mechanism disposed at least one of on or in the housing, the movement transmission mechanism comprising:
- a rotatable member mounted to be rotatable relative to the housing;
- a balancing mass having a pair of opposing grooves defined in an outer surface thereof and each cooperatively engaged by a respective alignment pin extending inward from the housing;
- and
- a primary member disposed in the housing, the primary member being moveable along the longitudinal axis and operationally coupled to the rotatable member, the balancing mass, and the moveable portion,
- wherein rotation of the rotatable member a predetermined amount causes movement of the moveable portion a corresponding first predetermined distance in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding second predetermined distance in a second radial direction opposite the first radial direction;
- and
- wherein each of the opposing grooves are disposed at an angle (θ) with respect to the central longitudinal axis, the angle (θ) being oblique to the central longitudinal axis.
7 more elements
A boring head comprising:
- a housing disposed about a central longitudinal axis, the housing having a first end adapted to be coupled to a machine tool and an opposite second end, the opposite second end having a moveable portion structured to have a cutting insert selectively coupled thereto;
- and
- a movement transmission mechanism disposed at least one of on or in the housing, the movement transmission mechanism comprising:
- a rotatable member mounted to be rotatable relative to the housing;
- a balancing mass having a pair of opposing grooves defined in an outer surface thereof and each cooperatively engaged by a respective alignment pin extending inward from the housing;
- and
- a primary member disposed in the housing, the primary member being moveable along the longitudinal axis and operationally coupled to the rotatable member, the balancing mass, and the moveable portion,
- wherein rotation of the rotatable member a predetermined amount causes movement of the moveable portion a corresponding first predetermined distance in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding second predetermined distance in a second radial direction opposite the first radial direction;
- and
- wherein rotation of the rotatable member a predetermined amount causes movement of the moveable portion a corresponding first predetermined distance in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding second predetermined distance in a second radial direction opposite the first radial direction along with movement of the balancing mass toward one of the first end or the second end of the housing.
7 more elements
A boring head comprising:
- a housing disposed about a central longitudinal axis, the housing having a first end adapted to be coupled to a machine tool and an opposite second end, the opposite second end having a moveable portion structured to have a cutting insert selectively coupled thereto;
- and
- a movement transmission mechanism disposed at least one of on or in the housing, the movement transmission mechanism comprising:
- a rotatable member mounted to be rotatable relative to the housing;
- a balancing mass having a pair of opposing grooves defined in an outer surface thereof and each cooperatively engaged by a respective alignment pin extending inward from the housing;
- and
- a primary member disposed in the housing, the primary member being moveable along the longitudinal axis and operationally coupled to the rotatable member, the balancing mass, and the moveable portion,
- wherein rotation of the rotatable member a predetermined amount causes movement of the moveable portion a corresponding first predetermined distance in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding second predetermined distance in a second radial direction opposite the first radial direction;
- and
- wherein the balancing mass is constrained to movement only along an axis oriented obliquely to the central longitudinal axis.
7 more elements
Dependencies are inferred from the claim text.