Impact machine
AssigneeHydropulsor AB
InventorKurt Dahlberg
Life of this patent
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Abstract
When cutting metal rods, for instance, percussion machines are used that utilize stored kinetic energy which has been produced either mechanically or by the use of compressed gas. A drawback is the inability to accurately control the cutting process. The present invention makes use of hydraulics to control the process, thereby achieving total control of the course of the function.
Claims19
A method for producing adiabatic coalescence in a material comprising the steps of:
- providing a percussion machine with a striking unit which, when functioning, emits kinetic energy of such magnitude that metallic material can be machined with minimum changes in the material and with no material loss, and wherein the striking unit has an impact ram (2) movable between two end positions with two circumferential surfaces (5 and 6) perpendicular to the axis of the impact ram (2), which surfaces (5 and 6) can be influenced by liquid pressure and are of different sizes, the larger surface (6), when under pressure, bringing the impact ram (2) to its original position for a stroke;
- providing a metallic material at the end of a mold;
- and,
- driving said impact ram (2) against said material in the mold.
A percussion machine with a striking unit which, when functioning, emits kinetic energy of such magnitude that metallic material can be machined with minimum changes in the material and with no material loss, whereby preferably adiabatic coalescence occurs, and wherein the striking unit has an impact ram (2) movable between two end positions with two circumferential surfaces (5 and 6) perpendicular to the axis of the impact ram (2), which surfaces (5 and 6) can be influenced by liquid pressure and are of different sizes, the larger surface (6), when under pressure, bringing the impact ram (2) to its original position for a stroke.
A percussion machine as claimed 17 characterized by a disc with a central aperture, arranged at the lower end of the damping ram (67), into which aperture an adjustable ram is inserted, having a peripheral groove with an outlet for pressure fluid, said outlet running in the longitudinal direction of the adjustable ram.
Dependencies are inferred from the claim text.