EP3463840A1 - Verfahren zum pressen eines werkstückes mit einer vorbestimmten presskraft - Google Patents
Verfahren zum pressen eines werkstückes mit einer vorbestimmten presskraftInfo
- Publication number
- EP3463840A1 EP3463840A1 EP17739846.8A EP17739846A EP3463840A1 EP 3463840 A1 EP3463840 A1 EP 3463840A1 EP 17739846 A EP17739846 A EP 17739846A EP 3463840 A1 EP3463840 A1 EP 3463840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- pressing force
- force
- predetermined
- forming tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
- B30B15/148—Electrical control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
- B30B1/181—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means the screw being directly driven by an electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
- B30B15/186—Controlling the return movement of the ram, e.g. decompression valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Program-control arrangements
Definitions
- the invention relates to a method for pressing a workpiece with a predetermined pressing force.
- the object of the present invention was to overcome the disadvantages of the prior art and to provide a method which has an increased process speed while at the same time maintaining process accuracy.
- a method for pressing a workpiece with a predetermined pressing force by means of a forming tool, which is coupled via a screw with an electric motor is provided.
- a screw drive converts the rotational movement of a drive shaft of the electric motor into a translatory movement of the forming tool.
- the electric motor is controlled by a control. The method comprises the following method steps:
- An advantage of the method according to the invention lies in the fact that the method is divided into a very wide variety of method steps, with the electric motor having a different speed in the individual method steps. By this measure it is achieved that the pressing time can be shortened as possible and at the same time the required pressing force can be achieved as accurately as possible.
- the electric motor in a predetermined maximum speed as fast as possible deliver the forming tool is guaranteed.
- the forming tool is moved in the direction of the workpiece, taking care that the forming tool is moved freely toward the workpiece and the forming tool is not yet applied to the workpiece. Only in the subsequent process step in which the electric motor is operated at reduced speed is provided that the forming tool comes to rest on the workpiece to be machined.
- a spindle drive it is also possible to use another means which is suitable for converting the rotational movement of the electric motor into a translatory movement of the shaping tool.
- the predetermined position of the forming tool can be detected, for example, by means of a linear measuring unit.
- the torque increase in the electric motor can be detected, for example, by detecting the motor current in the electric motor.
- the electric motor is braked to a predetermined minimum speed.
- the advantage here is that by braking the electric motor to minimum speed excessive pressing and thus the handing over of the pressing force can be prevented.
- the electric motor is operated at minimum speed for a predetermined or predeterminable period of time until oscillations, which occur in the drive system due to the deceleration process from the reduced rotational speed to the minimum rotational speed, have largely disappeared.
- the advantage here is that can be achieved by operating the electric motor in the minimum speed in a predetermined period of time that the drive system can swing out and thus there is no distortion of the measured pressing force on the measuring unit. In extreme cases, it may be necessary to select a complete standstill as the minimum speed.
- the oscillations that have to die out are due to the mass inertia or the inertial forces of the individual components in the drive system and due to the abrupt deceleration maneuver.
- the control of the electric motor is predetermined by the control on the basis of the pressing force measured in the measuring unit. After expiration of this predetermined time period in which the sensor signal is corrupted, it is possible to switch over to pressing force control in order to be able to achieve the required pressing force.
- the reduced rotational speed is between 0.1 and 100%, in particular between 0.5% and 99%, preferably between 50% and 80% of the maximum rotational speed.
- the further control of the electric motor is predetermined by the control based on the pressing force, wherein after the detection of the press force increase, the electric motor is decelerated to a predetermined minimum speed and in an initial period during the Abbremsvorganges the force detected in the measuring unit pressing force is superimposed by a based on a model calculation press force and after the initial period, the force detected by the measuring unit press force serves as input to the control.
- This alternative variant has the advantage that the process time can be further shortened and optimized.
- the inertia and / or spring stiffness and / or damping and the angular or linear accelerations of the individual strlid built components is taken into account.
- the advantage here is that based on these values or on the basis of these state variables, the dynamic behavior of the drive train can be accurately calculated and thus a distortion of the measured pressing force during braking or when accelerating the electric motor can be compensated.
- the model calculation is adjusted on the basis of the respective previous cycles in an iterative learning process, wherein used to adapt the model calculation of the time course of the measured value of the torque in the measuring unit, and the engine torque and the associated rotation angle of the drive shaft in the electric motor becomes.
- the advantage here is that the drive method can be adjusted and improved during operation, which on the one hand, the accuracy can be increased to achieve the pressing force and beyond the process time can be further reduced.
- a disturbance observer in particular a Kalman filter
- a Kalman filter is used for the model calculation, which is also regulated in the first step and only superimposed on the force detected in the measuring unit at a certain point in time.
- the advantage here is that such a disturbance observer can estimate the actually applied actual force on the basis of the manipulated variable and the sensor signals and the estimated external force can be specified to the control, whereby the accuracy in achieving the predetermined pressing force can be improved.
- It may also be provided to extend the control loop by a feedforward control for force and / or inertia compensation, should the dynamics of the lower-level controllers not be sufficient.
- the pilot controls can be derived from the mathematical models. It may be sufficient to use a much simpler model, such as a rigid rigid body system, which only considers moment of inertia and no dynamic elements. Alternatively, a dynamic system as described in this document may be used for mathematical modeling.
- a piezoelectric sensor is used as the measuring unit, which is arranged to detect the pressing force in the region of the forming tool.
- the advantage here is that a piezo sensor on the one hand has a high accuracy and also has a very fast response.
- Press force value is specified, the speed of rotation is calculated in a feedforward control from the setpoint trajectory of the pressing force value. If a disturbance observer is used, the actual force can be estimated. By fading to this estimated force, noise can be faded out.
- the press force value is estimated by means of a disturbance observer and that in a second phase after the detection of the press force increase, the press force is detected directly by the measuring unit and serves as input for the control.
- the press force value is specified by means of the disturbance observer, vibrations or disturbances in the system can be filtered, so that no settling occurs in the control. After the vibrations have subsided, the torque actually measured at the measuring unit can then serve as the input value for the control.
- the transition between different speeds of the individual process steps is specified such that no sudden increases in the Acceleration occur. By avoiding sudden increases in acceleration, the jolt that acts on the individual components of the press can be reduced and thereby the longevity of the press can be increased.
- the maximum speed to which the electric motor is accelerated need not necessarily correspond to the maximum possible speed of the electric motor. Rather, it is also possible that the maximum speed results from the process parameters and is a calculated value.
- the predetermined maximum speed can vary from one pressing process to the next.
- a low-pass filter of the third order of the form R F (s) is selected as the regulator.
- controller parameters can be set by means of a loop-shaping method.
- the threshold value of the pressing force or of the torque which is detected may be a predetermined or individually definable absolute value of the pressing force, for example in N, or the torque, for example in Nm.
- an absolute value of the pressing force or the torque is not specified as a threshold, but that as a threshold value a predetermined or individually specifiable press force increase per travel of the forming tool (wherein the travel can be measured directly on the forming tool, or can be calculated over the number of revolutions of the drive motor) or torque increase per rotation angle unit of the motor is specified.
- the threshold value of the press force increase can be defined approximately in N per mm travel or in N per ° rotation angle of the electric motor.
- the threshold value of the torque increase can be defined approximately in Nm per ° rotation angle.
- the threshold value is a maximum change in the press force increase per travel path of the forming tool (wherein the Travel can be measured directly on the forming tool, or can be calculated on the number of revolutions of the drive motor) or the torque increase per rotation angle unit of the motor is specified.
- the maximum change in the press force increase per rotation angle unit can be calculated, for example, by the first derivation of the function of the press force increase per travel path unit of the forming tool.
- This threshold value of the change in the torque increase can be defined approximately in .DELTA. ⁇ per ⁇ mm travel.
- the maximum change of the torque increase per rotation angle unit can be calculated, for example, by the first derivative of the function of the torque increase per rotation angle unit of the motor.
- This threshold value of the change in the torque increase can be defined approximately in ANm per A ° rotation angle.
- a regulation in the sense of this document can be understood as meaning a two-degree-of-degree force control with underlying engine control, wherein a control circuit with this control can also have additional pilot controls.
- a Drehiereverl is calculated on the basis of the load characteristic and a desired setpoint trajectory for the external pressing force. This speed starts at the reduced speed and is transferred to standstill. This speed profile ensures that the external pressing force follows the desired setpoint trajectory sufficiently well. As a result, it is possible to compensate for the permanent control deviation with a linear controller RF. If a disturbance observer is used, the estimated signal is controlled and, at the end of the trajectory, blended to the measurement signal. If the disturbance observer is not present because the quality of the measurement signal is sufficiently good, then the measurement signal is controlled directly and thus no cross-fading is performed.
- FIG. 1 is a schematic representation of a possible construction of a press
- FIG. 2 is a flow chart of a first control strategy for pressing a workpiece
- Fig. 3 is a structural diagram of the mechanical model of the press
- 5 is a structural diagram of a control circuit for the force control; 6 shows an exemplary controlled system of a force control;
- FIG. 7 is a flow chart of another control strategy for pressing a workpiece
- FIG. 8 is a structural diagram of a control circuit with disturbance observer and load precontrol, force precontrol and inertia compensation
- FIG. 8 is a structural diagram of a control circuit with disturbance observer and load precontrol, force precontrol and inertia compensation
- FIG. 9 shows a structural circuit diagram of a control loop with disturbance observer and force precontrol as well as inertia compensation
- 10 is a structural diagram of a control loop with Stördorfnbeobachter and force precontrol
- 11 is a structural diagram of a control loop with Störuccnbeobachter and Lastvor- control and force precontrol;
- 12 is a structural diagram of a control circuit with load precontrol, force precontrol and inertia compensation
- 13 is a structural diagram of a control circuit with force precontrol and inertia compensation
- the process press 1 shows a schematic representation of a process press 1.
- the process press 1 comprises an electric motor 2, and a forming tool 3 coupled to the electric motor 2.
- the forming tool 3 can act on a workpiece 4 in order to be able to deform it.
- Such deformation may be, for example, an embossment.
- the workpiece 4 is bent for example by means of the forming tool 3.
- the forming process of the workpiece 4 can be automated.
- the forming tool 3 can have a wide variety of shapes.
- the electric motor 2 is designed as a servomotor.
- a servomotor may be, for example, a synchronous motor.
- the electric motor 2 is connected to a controller 5.
- a frequency converter is formed, which cooperates with the electric motor 2 and predetermines the rotational speed of the electric motor 2.
- a spindle drive 6 is coupled to the electric motor 2.
- a spindle drive 6 may be formed, for example, as a screw, preferably as a ball screw.
- a ball screw has the advantage that it has a low clearance. As a result, a high accuracy of the process press 1 can be achieved.
- the rotational movement of the electric motor 2 can be converted into a translational movement of the forming tool 3.
- a gearbox 7 is arranged between the spindle drive 6 and the electric motor 2, by means of which the speed of the drive shaft 8 of the electric motor 2 can be reduced.
- a drive gear 7 is provided in the drive, then a spindle 9 of the spindle drive 6 is coupled to a transmission output shaft 10 arranged at the transmission output shaft 11 and has the same rotational speed as this.
- the spindle 9 of the spindle drive 6 is coupled to the drive shaft 8 of the electric motor 2 and has the same rotational speed as this.
- a measuring unit 12 is arranged, which is designed to detect the voltage applied to the forming tool 3 pressing force.
- the measuring unit 12 can be designed in particular as a force sensor or as a load cell.
- the measuring unit 12 is designed as a piezoelectric sensor.
- the measuring unit 12 is coupled to the controller 5.
- a coupling 13 is provided for connecting the electric motor 2 and the transmission 6 or for connecting the transmission 7 and the spindle drive 6.
- the clutches 13 are used in particular for torque transmission between the individual components and are therefore arranged between the individual components.
- the spindle 9 of the spindle drive 6 is mounted on a bearing 14, which serves for receiving the introduced into the spindle 9 axial forces and radial forces.
- the spindle drive 6 comprises a threaded nut 15, which is coupled to the spindle 9 and converts the rotational movement of the spindle 9 into a translatory movement of the threaded nut 15.
- a carriage 16 may be coupled, which can serve to receive the forming tool 3.
- the measuring unit 12 is arranged between carriage 16 and forming tool 3. In an embodiment variant, not shown, it can be provided that the measuring unit 12 is integrated in the carriage 16.
- the forming tool 3 is detachably coupled to the carriage 16. It can thereby be achieved that different forming tools 3 can be coupled to the carriage 16 for different application requirements.
- the carriage 16 is guided on a guide rail 17.
- the forming tool 3 is moved by means of the spindle drive 6 on the workpiece 4, wherein the spindle drive 6 is driven by the electric motor 2.
- the forming tool 3 is thereby moved freely onto the workpiece 4, care being taken that the forming tool 3 does not touch the workpiece 4. In other words, one can also speak of a delivery process.
- the pressing process is divided into two stages.
- the first stage is a delivery process in which the forming tool 3 is moved freely onto the workpiece 4 without, however, touching it.
- the second stage is a forming stage in which the pressing surface 18 of the forming tool 3 bears against the workpiece 4 and deforms the workpiece 4 by means of the forming tool 3 is, wherein on the drive shaft 8 of the electric motor 2, an increased torque must be applied.
- the electric motor 2 is superimposed on speed, until a predefined pressing force is exceeded or the impact of the forming tool 3 on the workpiece 4 is detected by means of a gradient method.
- a predefined pressing force can be set by means of a cascaded two-degree of freedom control. This cascaded control consists of an internal speed control, a superimposed torque control or force control and a corresponding model-based feedforward control.
- the model-based feedforward control compensates for the occurring pressing force due to the load and the inertia of the drive. If the mechanical coupling between the electric motor 2 and the forming tool 3 is sufficiently rigid, then the pressing force detected at the measuring unit 12 can be used as a direct feedback variable for the torque regulation or force regulation.
- the difficulty with the control is to keep the process speed high and the press force within predetermined limits. If an ideal, trouble-free route is assumed, a motor speed can be found running, which makes it possible to set a desired pressing force. In the real application, however, occurring interference and measurement noise in the measurement unit 12 is to be expected.
- the aim of the control is to regulate the actual pressing force on the forming tool so that it reaches a defined value, also referred to as a predetermined pressing force.
- the actual force applied to the forming tool 3 pressing force is to be measured by means of the measuring unit 12 and serve as a feedback variable in the scheme.
- the pressing force measured in the measuring unit 12 only corresponds to the pressing force actually applied to the forming tool 3 when the forming tool 3 is not being accelerated or decelerated and therefore no dynamic effects due to the inertia of the individual components occur.
- the pressing force actually applied to the forming tool 3 can be accurately measured by the measuring unit 12 when the forming tool 3 is stationary or moving at a constant forward speed, this condition also having to last for a certain period of time, so that vibrations have already subsided are.
- FIG. 2 shows a flowchart of a schematic sequence of a first control strategy for pressing the workpiece 4.
- step 1 the drive shaft 8 of the electric motor 2 is accelerated to maximum speed.
- a specific time profile of the angular velocity or a certain acceleration ramp can be predetermined on the basis of which the electric motor 2 is accelerated.
- the query A is queried whether the drive shaft 8 of the electric motor 2 has already completed a predetermined number of spindle revolutions, or, consequently, how far the forming tool 3 has already been moved by means of the spindle drive 6 in its linear movement.
- the electric motor 2 is operated at maximum speed until reaching the predetermined number of spindle rotations or reaching the predetermined feed path of the forming tool 3 in the query A to fulfill the condition.
- the number of spindle revolutions which serves as a trigger for switching to method step 2 is selected as high as possible, but chosen so low that it is possible in all possible cases due to the tolerances that the pressing surface 18 of the forming tool 3 not during this process step on the workpiece 4 comes to the concern.
- the pressing force measured at measuring unit 12 is not interrogated or at least not included in the motor control.
- the electric motor 2 is operated at reduced speed.
- the reduced speed serves to ensure that sufficient time remains in the detection of a press force increase in the measuring unit 12 in order to reduce the engine speed or to switch to a force control.
- the speed of rotation in the reduced speed depends on how fast the electric motor 2 can be braked and which traverse path the forming tool 3 can continue to move after being placed on the workpiece 4. This maximum travel is also called offset. For example, if the intended press-in depth is very large, the reduced speed may have a high value and, for example, be approximately the same size as the maximum speed.
- the transition from maximum speed to reduced speed can also be carried out according to a predetermined time profile of the angular velocity.
- the measuring unit 12 is activated in order to be able to detect when the pressing surface 18 of the forming tool 3 comes into contact with the workpiece 4, which causes a sudden increase in the pressing force detected in the measuring unit 12 comes.
- Query B determines whether the pressing force detected in the measuring unit 12 has reached a certain predefined threshold value and when the threshold value is reached, the method step 3 is initiated.
- a force control as shown in the structural diagram of the control circuit in FIG. 5 with the controlled system in FIG. 6, is activated.
- the force control the electric motor 2 is controlled such that the predetermined pressing force is achieved.
- the input variable of the model represents the engine torque M m , which counteracts the friction torque Mrm of the drive.
- the motor moment of inertia is determined by ö m .
- the clutch 13 is modeled as a linear spring-mass-damper element. This is characterized by the spring constant Ck, the damping constant dk and the moment of inertia 6 k , wherein the moment of inertia on the input or output side is taken into account in each case half.
- the moment after the clutch 13, which acts as the drive torque of the spindle 9, is designated M sp .
- the friction losses are taken into account with the torque M rs .
- the ball screw transforms the rotational movement of the spindle 9 in a translational movement of the carriage 16.
- the gear ratio of this transformation is denoted by i g .
- the measuring unit 12, which connects the carriage 16 with the mass rai and the forming tool 3 with the mass im, is modeled with a linear spring-damper model with the spring constant c s and the damping constant d s .
- the position of the carriage 16 is indicated by si and the position of the forming tool 3 by s 2 .
- the transformed spindle torque causes the force F a , which acts on the carriage 16.
- the force F s indicates the measured value of the measuring unit 12 and Fext the external force occurring during pressing.
- the exemplary profile of the external force can be determined by a test.
- This exemplary course is also referred to as a load characteristic.
- the load model of the specific applications becomes empirical determined.
- the aim is to metrologically record a characteristic curve that indicates the relationship between the external force Fext and the position of the forming tool 3 s 2 .
- the forming tool 3 at a constant speed, according to the application, so far moved to the workpiece 4 until a defined limit force is reached.
- the characteristic is divided into two areas.
- Fig. 5 shows a structural diagram of a control circuit for the force control, wherein the force controller is designed for the forming stage and is active in this.
- the curve of the pressing force has a very steep rise.
- the pressing force increases steeply with only slight movement of the forming tool 3. Therefore, it may be necessary for the forming die 3 to be brought to a standstill within a short distance to reach a predetermined value of the pressing force. Due to the inertia of the system or due to the inertia of a conventional control of the electric motor 2, it may happen that the dynamics of the subordinate speed controller of the electric motor 2 is not sufficient for this braking maneuver. To circumvent this problem, not only a force precontrol but also a
- the cutoff frequency a> FG and the gain k FP are adjusted in such a way that a stable behavior for the closed control loop is established.
- the controller parameters can be adjusted using a loop-shaping method.
- FIG. 7 shows a flow chart of a schematic sequence of a further control strategy for pressing the workpiece 4, the first two method steps being the same as in the flowchart according to FIG. 2.
- the electric motor 2 is operated at a minimum speed.
- the minimum speed may vary from process to process and is dictated by the current process parameters. In extreme cases, it may even be necessary for the minimum speed to be zero or approximately zero.
- the braking of reduced Speed in minimum speed should go as quickly as possible or abruptly within the framework of the strength values of the process press 1.
- the electric motor 2 is operated at minimum speed until the vibrations occurring in the drive due to the abrupt deceleration maneuver have elapsed strnature. For this purpose, a precalculated time duration for the decay of the oscillations is interrogated in query C.
- the time required for decaying the oscillations is not calculated on the basis of a model, but that it is adapted in an iterative method or that the decay of the oscillations by detecting the engine torque in the electric motor 2 in comparison with the measured Torque in the measuring unit 12 is detected.
- a force control as shown in the structural diagram of the control loop in FIG. 4 or in the controlled system in FIG. 5, is activated.
- the force control By means of the force control, the electric motor 2 is controlled such that the predetermined pressing force is achieved.
- FIGS. 8 to 14 Various structural diagrams of possible control circuits for force regulation are shown in FIGS. 8 to 14. In order to avoid unnecessary repetition, reference is made to FIG. 5 or the respective preceding figures.
- the input signal used for the force regulator RF is not the sensor signal Fs, as is the case in FIG. 5, but an estimated force F ext is provided as input to the force controller RF by a disturbance observer 19. Furthermore, a force precontrol VF, a load precontrol Vext and an inertia compensation V »are provided.
- an input quantity for the force regulator RF is a force F ext estimated by the disturbance variable observer 19. Furthermore, a force precontrol VF and an inertia compensation V »are provided. In the exemplary embodiment according to FIG. 10, an input quantity for the force regulator RF is a force F ext estimated by the disturbance variable observer 19. Furthermore, a force precontrol VF is provided. In the exemplary embodiment according to FIG. 11, an input quantity for the force regulator RF is a force F ext estimated by the disturbance variable observer 19. Furthermore, a force precontrol VF and a load precontrol Vext are provided.
- the input signal used for the force regulator RF is the sensor signal Fs. Furthermore, a force precontrol VF, a load precontrol Vext and an inertia compensation V »are provided.
- the input signal used for the force regulator RF is the sensor signal Fs. Furthermore, a force precontrol VF and an inertia compensation V »are provided.
- the input signal used for the force regulator RF is the sensor signal Fs. Furthermore, a force precontrol VF is provided. In the embodiment according to FIG. 15, the input signal used for the force regulator RF is the sensor signal Fs. Furthermore, a force precontrol VF and a load precontrol Vext are provided.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50502/2016A AT518684B1 (de) | 2016-06-01 | 2016-06-01 | Verfahren zum Pressen eines Werkstückes mit einer vorbestimmten Presskraft |
| PCT/AT2017/060143 WO2017205888A1 (de) | 2016-06-01 | 2017-05-31 | Verfahren zum pressen eines werkstückes mit einer vorbestimmten presskraft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3463840A1 true EP3463840A1 (de) | 2019-04-10 |
| EP3463840B1 EP3463840B1 (de) | 2020-08-05 |
Family
ID=59350577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17739846.8A Active EP3463840B1 (de) | 2016-06-01 | 2017-05-31 | Verfahren zum pressen eines werkstückes mit einer vorbestimmten presskraft |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11161316B2 (de) |
| EP (1) | EP3463840B1 (de) |
| CN (1) | CN109195782B (de) |
| AT (1) | AT518684B1 (de) |
| WO (1) | WO2017205888A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019120863A1 (de) * | 2019-08-01 | 2021-02-04 | Atlas Copco Ias Gmbh | Verfahren zur Steuerung eines mechanischen Füge- oder Umformprozesses |
| JP7424798B2 (ja) | 2019-11-01 | 2024-01-30 | 株式会社ジャノメ | 電動プレス及びその制御プログラム |
| CN119739213B (zh) * | 2025-03-04 | 2025-07-01 | 深圳市大寰机器人科技有限公司 | 基于线性执行器的产品按压检测方法及系统 |
| CN120394651B (zh) * | 2025-07-03 | 2025-10-10 | 爱德夏汽车零部件(昆山)有限公司 | 一种汽车铰链加工便于取料的冲压设备 |
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| JP5561459B2 (ja) | 2009-03-24 | 2014-07-30 | 株式会社安川電機 | プレス機械装置およびそのモータ制御装置 |
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| SG11201503927RA (en) * | 2012-12-12 | 2015-06-29 | Armstrong Ltd S A | Self learning control system and method for optimizing a consumable input variable |
| CN105122637B (zh) * | 2013-04-18 | 2017-10-10 | 三菱电机株式会社 | 电动机控制装置 |
| DE102015101586B4 (de) * | 2015-02-04 | 2019-02-21 | Fette Compacting Gmbh | Pulverpresse zur Herstellung von Presslingen aus pulverförmigem Pressmaterial |
| JP6031544B2 (ja) * | 2015-03-02 | 2016-11-24 | Thk株式会社 | 押付装置 |
| JP2016172315A (ja) * | 2015-03-16 | 2016-09-29 | Thk株式会社 | 押付装置 |
| KR102345398B1 (ko) * | 2017-05-17 | 2021-12-31 | 주식회사 만도 | 전자식 브레이크 시스템 및 그를 이용한 자가테스트 방법 |
| WO2019218097A1 (zh) * | 2018-05-14 | 2019-11-21 | Lu Shan | 汽车爆胎安全稳定控制系统 |
-
2016
- 2016-06-01 AT ATA50502/2016A patent/AT518684B1/de active
-
2017
- 2017-05-31 WO PCT/AT2017/060143 patent/WO2017205888A1/de not_active Ceased
- 2017-05-31 US US16/305,558 patent/US11161316B2/en not_active Expired - Fee Related
- 2017-05-31 CN CN201780032951.9A patent/CN109195782B/zh active Active
- 2017-05-31 EP EP17739846.8A patent/EP3463840B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3463840B1 (de) | 2020-08-05 |
| AT518684B1 (de) | 2018-05-15 |
| US20200324503A1 (en) | 2020-10-15 |
| CN109195782A (zh) | 2019-01-11 |
| CN109195782B (zh) | 2021-08-03 |
| US11161316B2 (en) | 2021-11-02 |
| WO2017205888A1 (de) | 2017-12-07 |
| AT518684A1 (de) | 2017-12-15 |
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