A method for projecting a production process for producing a workpiece with a desired formation of a characteristic feature of the workpiece is implemented by a computer system. Using the method, the desired formation of the characteristic feature of the workpiece is detected and compared with formations of the characteristic feature of preceding workpieces. The formations of the characteristic feature of the preceding workpieces are stored in a formation database and a production parameter that is stored in a parameter database. When a formation of the characteristic feature of a preceding workpiece that is relevant to the desired formation of the characteristic feature is established with reference to the definition of the production parameter, the production parameter is defined for the production process for producing the workpiece with the desired formation of the characteristic feature.

A method for projecting a production process for producing a workpiece with a desired formation of a characteristic feature of the workpiece is implemented by a computer system. Using the method, the desired formation of the characteristic feature of the workpiece is detected and compared with formations of the characteristic feature of preceding workpieces. The formations of the characteristic feature of the preceding workpieces are stored in a formation database and a production parameter that is stored in a parameter database. When a formation of the characteristic feature of a preceding workpiece that is relevant to the desired formation of the characteristic feature is established with reference to the definition of the production parameter, the production parameter is defined for the production process for producing the workpiece with the desired formation of the characteristic feature.

The present invention relates to an additive manufacturing system and its methods. The system includes a material conveyor, an energy source, and a micro-forging device. The material conveyor is configured to convey material. The energy source is configured to direct an energy beam toward the material, the energy beam fuses at least a portion of the material to form a solidified portion. The micro-forging device is movable along with the material conveyor for forging the solidified portion, wherein the micro-forging device comprises a first forging hammer and a second forging hammer, the first forging hammer is configured to impact the solidified portion to generate a first deformation, and the second forging hammer is configured to impact the solidified portion to generate a second deformation greater than the first deformation.

Provided is a high-efficiency transmission free forging hydraulic press and an operation method thereof. The high-efficiency transmission free forging hydraulic press includes: a hydraulic cylinder, a hydraulic pump, and a pressurization energy storage apparatus. By providing two pressurization energy storage apparatuses between the hydraulic pump and the hydraulic cylinder of the high-efficiency transmission free forging hydraulic press, under the effect of a control system, the two pressurization energy storage apparatuses can alternately provide isobaric pressure oil or pressure oil having undergone pressurization to the hydraulic cylinder of the free forging hydraulic press, such that when the hydraulic pump operates in a status with a relatively low pressure, the hydraulic cylinder in the free forging hydraulic press can constantly obtain the isobaric pressure oil or the pressurization pressure oil, achieving the object of storage of surplus energy and high-efficiency transmission of the hydraulic press.

The present invention relates, in particular, to a forging hammer comprising a striker and a hydraulic linear drive that is coupled to the striker and is designed to drive the striker, which drive comprises a hydraulic circuit having a servo-motor hydro pump, a hydraulic cylinder, in particular a differential cylinder, which is fluidically connected downstream of the hydro pump via a directional valve module, and a servo-motor hydro generator, which is fluidically connected downstream of the hydraulic cylinder via the directional valve module, and comprising in addition a control unit configured at least for the simultaneous control of the hydro pump, the hydro generator and the directional valve module.

The present invention relates, in particular, to a forging hammer comprising a striker and a hydraulic linear drive that is coupled to the striker and is designed to drive the striker, which drive comprises a hydraulic circuit having a servo-motor hydro pump, a hydraulic cylinder, in particular a differential cylinder, which is fluidically connected downstream of the hydro pump via a directional valve module, and a servo-motor hydro generator, which is fluidically connected downstream of the hydraulic cylinder via the directional valve module, and comprising in addition a control unit configured at least for the simultaneous control of the hydro pump, the hydro generator and the directional valve module.

A motor control device includes a pressure command unit calculating a pressure command for commanding pressure generated in a pressure control object, a pressure detection unit detecting the pressure generated in the pressure control object, a pressure control unit calculating a speed command for pressure control for the servo motor, based on the calculated pressure command and the detected pressure, and a servo control unit controlling speed of the servo motor, based on the calculated speed command. The pressure control unit performs an integral operation. When a direction of increasing pressure in the integral operation is defined as a positive direction in the integral operation, and a direction of decreasing the pressure is defined as a negative direction, a median between an upper limit in the positive direction and a lower limit in the negative direction in the integral operation is larger than zero.

A motor control device, includes a pressure command unit calculating a pressure command for commanding pressure generated in a pressure control object, a pressure detection unit detecting the pressure generated in the pressure control object, a pressure control unit calculating a speed command for pressure control for the servo motor, based on the calculated pressure command and the detected pressure, and a servo control unit controlling speed of the servo motor, based on the calculated speed command. The pressure control unit performs an integral operation. When a direction of increasing pressure in the integral operation is defined as a positive direction in the integral operation, and a direction of decreasing the pressure is defined as a negative direction, a median between an upper limit in the positive direction and a lower limit in the negative direction in the integral operation is larger than zero.

The underlying invention relates particularly to a hydraulic forming machine, more particularly a forging hammer, for workpiece forming, comprising a hydraulic cylinder for driving a ram configured for workpiece forming, and a hydraulic circuit configured for operation of the hydraulic cylinder, wherein the hydraulic circuit has an actuator with an adjustably variable volume flow via which a first hydraulic working chamber of the hydraulic cylinder, used to accelerate the ram during the execution of a working stroke (A) for workpiece forming, can be provided with hydraulic fluid. The hydraulic circuit is configured to adjust and vary the volume flow of the valve or actuator, depending on a setpoint speed (Vsoll) of the ram to be achieved in an acceleration phase of a working stroke (A), and to optimize the subsequent movement phase.

The underlying invention relates particularly to a hydraulic forming machine, more particularly a forging hammer, for workpiece forming, comprising a hydraulic cylinder for driving a ram configured for workpiece forming, and a hydraulic circuit configured for operation of the hydraulic cylinder, wherein the hydraulic circuit has an actuator with an adjustably variable volume flow via which a first hydraulic working chamber of the hydraulic cylinder, used to accelerate the ram during the execution of a working stroke (A) for workpiece forming, can be provided with hydraulic fluid. The hydraulic circuit is configured to adjust and vary the volume flow of the valve or actuator, depending on a setpoint speed (Vsoll) of the ram to be achieved in an acceleration phase of a working stroke (A), and to optimize the subsequent movement phase.