High speed hammer forging machines
OwnerSilvio Brignoliinventor
Life of this patent
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Abstract
In a high-speed hammer, precision forging machine the hammers are radially oriented with respect to the axis of the workpiece and are arranged in a plurality of opposed pairs. The hammers are positively coupled to each other by gearing. Displacement elements such as pairs of wedges that are longitudinally positioned between each hammer and its respective die holder so that, during the simultaneous movement of the dies towards the workpiece, an additional stroke movement is achieved. Mechanical, hydraulic, pneumatic or electrical means may be used to control the movement of the displacement elements.
Claims15
A high-speed precision hammer machine for forging a workpiece, comprising a housing forming an inner chamber;
- at least four hammers arranged in opposed pairs in said chamber and distributed radially around a passage along which the workpiece advances through said chamber;
- die holder means guiding said hammers for radial movement toward and away from a workpiece in said passage;
- means for connecting each hammer with an associated die holder means;
- dies held by the respective die holder means;
- a plurality of eccentric hammer drive shafts arranged in said chamber and extending transverse of said passage radially spaced therefrom, said shafts being arranged in two pairs, the shafts of each pair extending parallel to one another and at right angles to the shafts of the other pair;
- drive means for said shafts, including a plurality of motors each in axial alignment with one of said shafts;
- means for providing positive rotational connection of said shafts with one another;
- means for effecting simultaneous radially inward movement of the hammers of each pair in alternation with similar movement of the hammers of the other pair;
- forging stroke adjusting means displaceable longitudinally of said passage and interposed between each hammer and the associated die holder means thereof for effecting simultaneous radial shifting of said die holder means and their dies towards and away from said passage during the forging operation;
- and means for controlling the displacement of said adjusting means.
Dependencies are inferred from the claim text.