Support for broached workpieces
AssigneeGlaenzer Spicer
InventorOrain M. Alexandre
Life of this patent
Estimating the term…
Abstract
The device allows the broaching of thin-walled workpieces with high precision and an excellent surface condition. It comprises mainly a fixed support defining a radial abutment surface, a sleeve defining ramps, wedge-shaped members bearing against said ramps and against the outer surface of the workpiece. These wedge-shaped members are carried by a plate which is capable of being brought to a wedging position under the effect of springs or to a disengaged position by means of ramps.
Claims14
A structure comprising in combination a device for supporting non-circular tubular thin-walled workpieces for the internal broaching of a localized sector thereof and a broach adapted for broaching said localized sector, said device comprising a support, a rigid sleeve having a longitudinal axis and carried by the support and defining at least one bearing surface, a holder mounted on the support to be movable relative to the sleeve in a direction substantially parallel to said axis, at least one wedge-shaped means movably mounted on the holder and having a first face in contact with the bearing surface of the sleeve, said wedge-shaped means having a second face opposed to the first face for fitting throughout its length a sector of the outer surface of the workpiece which is located opposite the sector of the workpiece which is engaged by said broach, means defining a fixed abutment surface substantially perpendicular to said axis and defining a broach-clearing centre opening, the abutment surface being adapted to cooperate with an end face of the workpiece, yieldable means for shifting the holder in a first direction and placing the wedge-shaped means in a wedging position thereof in which position the wedge-shaped means are engaged between said bearing face and said sector of the workpiece solely under the action of said yieldable means to block the workpiece in position without exertion of a deforming force on the workpiece, means for shifting the holder in a direction opposed to said first direction when it is required to remove the workpiece, said first face and said bearing surface making an angle with said axis which is such as to maintain the wedge-shaped means in the workpiece-engaging position thereof under the mere effect of friction between said first face and said bearing surface of the sleeve.
A device for supporting tubular workpieces for the broaching thereof, said device comprising a support, a rigid sleeve carried by the support and defining at least one bearing surface which extends roughly in a longitudinal direction of the workpiece, at least one wedge-shaped means mounted to be longitudinally movable relative to the sleeve and having a first face in contact with the bearing surface of the sleeve, said wedge-shaped means having a second face opposed to the first face for fitting throughout its length a sector of the outer surface of the workpiece which is located in the region of a sector of the workpiece which must be broached, means defining a fixed abutment surface substantially perpendicular to the longitudinal direction of the workpiece and defining a centre opening, the abutment surface being adapted to cooperate with an end face of the workpiece, means for urging the wedge-shaped means in a direction corresponding to a wedging thereof, and means for shifting the wedge-shaped means in a direction opposed to the wedging direction, the wedge-shaped means comprising a plurality of sections, guide means and springs disposed between adjacent sections, at least some of said sections being mounted to be slidable along the guide means.
A device for supporting non-circular tubular workpieces for the internal broaching of a localized sector thereof, said device comprising a support, a rigid sleeve having a longitudinal axis and carried by the support and defining at least one bearing surface, a holder mounted on the support to be movable relative to the sleeve in a direction substantially parallel to said axis, at least one wedge-shaped means movably mounted on the holder and having a first face in contact with the bearing surface of the sleeve, said wedge-shaped means having a second face opposed to the first face for fitting throughout its length a sector of the outer surface of the workpiece which is located opposite the sector of the workpiece which must be broached, means defining a fixed abutment surface substantially perpendicular to said axis and defining a broach-clearing centre opening, the abutment surface being adapted to cooperate with an end face of the workpiece, yieldable means for shifting the holder in a first direction and placing the wedge-shaped means in a wedging position thereof in which position the wedge-shaped means are engaged between said bearing face and said sector of the workpiece solely under the action of said yieldable means to block the workpiece in position without exertion of a deforming force on the workpiece, means for shifting the holder in a direction opposed to said first direction when it is required to remove the workpiece, said first face and said bearing surface making an angle with said axis which is such as to maintain the wedge-shaped means in the workpiece-engaging position thereof under the mere effect of friction between said first face and said bearing surface of the sleeve, further comprising a member disposed between the holder and the support and mounted to be rotatable about said axis relative to the holder and the support, cam means interposed between the holder and the member for moving the holder in a direction opposed to said first direction upon rotation of said member relative to the support, and means for rotating said member.
Dependencies are inferred from the claim text.