A hydraulic forging press machine and a control method, whereby surging of the forging load or dead zones where the forging speed goes to zero is suppressed, and forging is performed with high precision throughout a wider range than the prior art, from low to high load. Pressure cylinders have a main pressure cylinder configured so working fluid is supplied during forging, and secondary pressure cylinders are configured so supplying and stopping of the supply of working fluid thereto are switched in response to the forging load, head-side hydraulic chambers of the secondary pressure cylinders being connected to a head-side hydraulic chamber of the main pressure cylinder via electromagnetic switching valves. Only the main pressure cylinder is used until the forging load exceeds a set load, and the number of secondary pressure cylinders used is sequentially increased as the forging load increases after the forging load exceeds the set load.

A hydraulic forging press machine and a control method, whereby surging of the forging load or dead zones where the forging speed goes to zero is suppressed, and forging is performed with high precision throughout a wider range than the prior art, from low to high load. Pressure cylinders have a main pressure cylinder configured so working fluid is supplied during forging, and secondary pressure cylinders are configured so supplying and stopping of the supply of working fluid thereto are switched in response to the forging load, head-side hydraulic chambers of the secondary pressure cylinders being connected to a head-side hydraulic chamber of the main pressure cylinder via electromagnetic switching valves. Only the main pressure cylinder is used until the forging load exceeds a set load, and the number of secondary pressure cylinders used is sequentially increased as the forging load increases after the forging load exceeds the set load.

The disclosure pertains to a fine blanking press comprising a first press unit comprising a first press drive for driving the first press unit in a first driving movement during a fine blanking process step, and a second press unit wherein the second press unit is driven in a second driving movement at least partially during the first driving movement of the first press unit, and wherein a force control unit exerts a counter force against a force exerted by the first press unit during its first driving movement, and wherein the force control unit comprises at least one sensor and a controller operative to receive measuring data collected by the at least one sensor, and wherein the controller is configured to carry out a closed loop control on basis of the received measuring data. The disclosure further pertains to a method for operating a fine blanking press.

The disclosure pertains to a fine blanking press comprising a first press unit comprising a first press drive for driving the first press unit in a first driving movement during a fine blanking process step, and a second press unit wherein the second press unit is driven in a second driving movement at least partially during the first driving movement of the first press unit, and wherein a force control unit exerts a counter force against a force exerted by the first press unit during its first driving movement, and wherein the force control unit comprises at least one sensor and a controller operative to receive measuring data collected by the at least one sensor, and wherein the controller is configured to carry out a closed loop control on basis of the received measuring data. The disclosure further pertains to a method for operating a fine blanking press.

The disclosure pertains to a fine blanking press comprising a first press unit comprising a first press drive for driving the first press unit in a first driving movement during a fine blanking process step, and a second press unit wherein the second press unit is driven in a second driving movement at least partially during the first driving movement of the first press unit, and wherein a force control unit exerts a counter force against a force exerted by the first press unit during its first driving movement, and wherein the force control unit comprises at least one sensor and a controller operative to receive measuring data collected by the at least one sensor, and wherein the controller is configured to carry out a closed loop control on basis of the received measuring data. The disclosure further pertains to a method for operating a fine blanking press.

Apparatuses for pressing and heating a material and associated methods are disclosed herein. An apparatus of the present technology includes a housing, a pressure component positioned in the housing, a linkage component coupled to the pressure component, a first heating component coupled to the linkage component, and a second heating component positioned adjacent to the first heating component. The linkage component is movable between a first position and a second position. When the linkage component is at the first position, the linkage component is positioned at a first level. When the linkage component is at the second position, the linkage component is positioned at a second level and the linkage component holds the first heating component stationary relative to the second heating component.

Apparatuses for pressing and heating a material and associated methods are disclosed herein. An apparatus of the present technology includes a housing, a pressure component positioned in the housing, a linkage component coupled to the pressure component, a first heating component coupled to the linkage component, and a second heating component positioned adjacent to the first heating component. The linkage component is movable between a first position and a second position. When the linkage component is at the first position, the linkage component is positioned at a first level. When the linkage component is at the second position, the linkage component is positioned at a second level and the linkage component holds the first heating component stationary relative to the second heating component.

In a method and an apparatus for reducing the cutting impact in a hydraulically-driven precision blanking press, the force necessary to reduce the cutting impact as a counterforce is generated directly in the pressure chamber of the drive piston such that the counterforce acts directly on the cutting punch and so that the design of the press can be simplified, costs can be reduced, no additional external hydraulic-mechanical means for reducing the cutting impact are needed, and so that the loads on the press and the die can be reduced.

In a method and an apparatus for reducing the cutting impact in a hydraulically-driven precision blanking press, the force necessary to reduce the cutting impact as a counterforce is generated directly in the pressure chamber of the drive piston such that the counterforce acts directly on the cutting punch and so that the design of the press can be simplified, costs can be reduced, no additional external hydraulic-mechanical means for reducing the cutting impact are needed, and so that the loads on the press and the die can be reduced.

A feeder system for advancing a compressible material has a hydraulic circuit associated with a final compression stage. The hydraulic circuit includes a platen attached to a primary ram configured to travel within a primary cylinder. The platen is operatively connected to a main piston cylinder assembly and at least two ancillary piston cylinder assemblies. In a first mode of operation, the hydraulic circuit forces the ancillary piston cylinder assemblies to advance the platen and ram in a forward compression direction until they reach a first predetermined position between travel extremes, while the main piston cylinder assembly passively travels along in the forward compression direction. Once the first predetermined position is reached, in a second mode of operation, the hydraulic circuit additionally forces the main piston cylinder assembly to compress the compressible material. In a third mode of operation, the hydraulic circuit retracts the platen and primary ram.