Methods of material forming and/or cutting
AssigneeCell Impact AB
InventorsErika Henriksson, Jon Nieminen
Life of this patent
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Abstract
A method for material forming and/or cutting by means of a tool and a drive unit. The method includes moving the drive unit to provide kinetic energy to the tool, for the tool to strike a work material, so as to form and/or cut the work material when the tool is operatively disassociated from the drive unit before the tool strikes the work material.
Claims12
A method for material forming and/or cutting, by means of a tool and a plunger, wherein the plunger is arranged to be driven by a hydraulic system comprising a first chamber for hydraulically biasing the plunger towards a work material, the method comprising:
- arranging the tool so as to be stationary;
- moving hydraulic fluid to the first chamber to accelerate the plunger;
- striking the stationary tool with the accelerated plunger to provide kinetic energy to the tool;
- decelerating the plunger before the tool strikes the work material, wherein the tool separates from the plunger, (i) by reducing the transport of hydraulic fluid towards the first chamber while avoiding cavitation of the hydraulic fluid, and/or (ii) by making a part of the plunger entering a braking chamber, thereby allowing hydraulic fluid to be trapped in the braking chamber, whereby an increased pressure in the trapped fluid decelerates the plunger;
- and
- subsequently striking the work material using the kinetic energy of the tool, whereby the work material is formed and/or cut.
A method for material forming and/or cutting, by means of a tool and a plunger, wherein the plunger is arranged to be driven by a hydraulic system comprising a first chamber for hydraulically biasing the plunger towards a work material, the method comprising:
- moving hydraulic fluid to the first chamber to accelerate the plunger;
- wherein the tool is in contact with the plunger during at least a part of the acceleration of the plunger to provide kinetic energy to the tool;
- decelerating the plunger before the tool strikes the work material, wherein the tool separates from the plunger, (i) by reducing the transport of hydraulic fluid towards the first chamber while avoiding cavitation of the hydraulic fluid and/or (ii) by making a part of the plunger entering a braking chamber, thereby allowing hydraulic fluid to be trapped in the braking chamber, whereby an increased pressure in the trapped fluid decelerates the plunger, and
- subsequently striking the work material using the kinetic energy of the tool, whereby the work material is formed and/or cut.
Dependencies are inferred from the claim text.