KR20120063727A - Control system for slim type servo press composed of multi-axis - Google Patents

Abstract

PURPOSE: A multi-axis slim servo press control system is provided for operators to monitor the operation state of an actuator as a graph and numerical values based on data about operations of the actuator are displayed on a monitor unit of a slave PC. CONSTITUTION: A multi-axis slim servo press control system comprises a plurality of actuators(10), a master controller(20), and a slave PC. The actuators comprise a servo motor(11), and cylinder shafts(12). The servo motor drives loads by outer controls. Each cylinder shaft is connected to each servo motor. The cylinder shafts are alternately extended and compressed in both directions with uniform force by the servo motors. The master controller controls each servo motor in order that a plurality of the actuators is independently stroked. Operators control the servo motor through the user interface of the slave PC.

Description

Multi Axis Slim Servo Press Control System {CONTROL SYSTEM FOR SLIM TYPE SERVO PRESS COMPOSED OF MULTI-AXIS}

The present invention relates to a multi-axis slim servo press control system, in which a master controller independently controls a plurality of actuators that operate in detail, and a stroke speed and stroke pressure for each stroke section of the actuator through a touch screen unit provided in the master controller. Multi-axis slim servo press control system that can reduce the defective rate of the workpiece by precisely setting the load in advance, and improve the process efficiency by independently controlling each actuator's forward stroke for compression and backward stroke for tension. It is about.

The full-scale servo press development began as a task to solve environmental problems and energy savings in the automotive industry. The material revolution has been brought about by the weight reduction of automobiles employing high tensile steel and aluminum and magnesium, and globalization and flexible production systems have been required due to the increase of models by diversifying production of optimum sites and consumption.

The history of press motors driven by servo motors began in Japan in the late 1990s with the development of electric servo drive presses, and in 1998 a linear servo press was developed.

Since then, the hybrid type using a ring mechanism for the purpose of enlargement in 2001, and the small general servo press in 2002, has grown rapidly. Since development, Japanese companies have led the global market and have secured the original technology.

Servo presses can be classified into three types of driving methods. The first development was a linear servo press that directly drives a ball screw mounted on a slide with a servo motor.

Direct acting servo press can operate the slide arbitrarily by applying pressure load in high position like hydraulic press, but in case of direct acting, there is a limitation on the size of the ball screw used in the driving part. There are many difficulties in making it.

The ring type servo press driving mechanism, which is the driving mechanism of small general press or servo press with large pressurization capacity, is a combination of an eccentric mechanism and a special ring. It even produces presses.

In order to take advantage of the features of recent servo presses, there is a servo press that is modularized so that an arbitrary slide operation is set in a machining process. In addition, it is known that 42,000kN module servo presses including seven presses of 6,000kN are being developed.

However, it is possible to independently control a plurality of actuators that act as pressing and improve the process efficiency by each actuator's forward stroke for compression and backward stroke for tension, and precisely set the stroke speed and stroke pressure load in advance for each stroke section of the actuator. There is no development case for a multi-axis slim servo press control system that can reduce the defective rate of the workpiece.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a multi-axis slim servo press control system capable of monitoring a plurality of actuators in real time and independently controlling a plurality of actuators through one master controller. There is.

In order to achieve the above object, the multi-axis slim servo press control system according to the present invention has a servo motor for driving a load by external control, and is connected one-to-one to the servo motor and is fixed by alternating in both directions. A plurality of actuators having a cylinder shaft stroked in tension and compression by force; A master controller controlling each sub-motor such that the plurality of actuators are independently stroked; It is configured to include; slave PC having a user interface for the user to control the servo motor in real time in conjunction with the master controller.

The cylinder housing surrounding the cylinder shaft of the actuator has an outer diameter of 65 to 85 mm, and the cylinder shaft is configured such that the stroke speed and the stroke pressure load operate differently for each stroke stroked by a predetermined control signal of the master controller.

The master controller includes a power switch for turning on and off the external power supply, an operation button for operating the actuator, an in-situ button for stroke of the cylinder shaft to the pre-operation position, and an emergency for stopping operation in the current state of the actuator. It consists of a stop button and a control panel provided with a touch screen unit for monitoring the operating state of the actuator in real time and controlling the operation of the actuator in real time.

The master controller is composed of a power supply port to which a power line is connected so that power is supplied from the outside, a plurality of connector ports for connecting to each actuator corresponding to the actuator, and a communication port for connecting to the slave PC. do.

The touch screen unit is implemented by dividing an operation state of a plurality of actuators by sections, and is configured to independently control each actuator operation by touching a predetermined section.

The touch screen unit includes a manual mode unit in which a user manipulates an operation state of each actuator in real time, and an automatic mode unit in which the actuator operates by a predetermined control signal of the master controller.

The touch screen unit includes a setup unit for inputting a numerical value to adjust the stroke speed and the stroke pressure load to a desired size for each section in which the cylinder shaft is stroked.

The monitor part of the slave PC is implemented with graphs and figures based on the data on the actuator's operation to monitor the actuator's operation in real time.

Multi-axis slim servo press control system according to the present invention,

First, when the cylinder shaft of the actuator strokes, dimensional precision and productivity improvement can be simultaneously achieved due to high precision management of the bottom dead center position and arbitrary setting of the stroke speed and pressure load for each stroke section.

Secondly, it can be widely used for high pressure precision calibrator for tensile / compression, tensile tester, etc. as well as simple insertion / indentation by actuator.

Third, graphs and numerical values are implemented based on data on the operation of the actuator in the monitor unit of the slave PC to monitor the operating state of the actuator in real time.

1 is an overall configuration diagram showing an embodiment of a multi-axis slim servo press control system according to the present invention;
2 is a block diagram showing another embodiment of a multi-axis slim servo press control system according to the present invention;
3 is a configuration diagram showing another embodiment of a multi-axis slim servo press control system according to the present invention;
4 is a configuration diagram showing an operation panel of the master controller according to the present invention;
5 is another configuration diagram showing an operation panel of the master controller according to the present invention;
6 to 8 are configuration diagrams showing an operation state of the touch screen unit according to the present invention;
9 to 11 are diagrams showing another operation state of the touch screen unit according to the present invention;
12 and 13 are diagrams illustrating a setup process of a touch screen unit according to the present invention;
14 is a block diagram illustrating a monitor unit of a slave PC according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram showing an embodiment of a multi-axis slim servo press control system according to the present invention, and FIG. 2 is a configuration showing another embodiment of the multi-axis slim servo press control system according to the present invention. 3 is a block diagram showing another embodiment of the multi-axis slim servo press control system according to the present invention.

As shown in Fig. 1 to Fig. 3, the multi-axis slim servo press control system according to the present invention is connected to the servo motor 11 and the servo motor 11 to drive a load by external control. A plurality of actuators (10) provided with a cylinder shaft (12) which is alternately moved forward and backward by the servo motor (11) so as to be tensioned and compressed with a constant force; A master controller 20 for controlling each sub-motor 11 such that the plurality of actuators 10 are independently stroked; And a slave PC 30 having a user interface for controlling the servo motor 11 in real time by interlocking with the master controller 20.

The servo motor 11 includes electric (servo motor), pneumatic (air servo motor), hydraulic (hydraulic motor), and the like according to the power source, and the servo motor 11 of the present invention refers to a servo motor.

The servo motor 11 is operated under the control of the master controller 20, and drives the cylinder shaft 12 to induce the stroke operation of the cylinder shaft 12.

The actuator 10 may be disposed vertically downward so that the cylinder shaft 12 is stroked up and down, or may be arranged in a horizontal state so that the cylinder shaft 12 is stroked in the horizontal direction.

The actuator 10 combined with the tensioning function and the compression function has been opened to the extent that the actuator 10 of the present invention can be used as a field tension test or a bidirectional calibrator in the future by improving an existing actuator which is mostly used for the compression function.

In addition, the actuator 10 of the present invention can be avoided from the practice of applying only in the vertical geogravity direction, so that various applications can be applied and reviewed.

In a housing block in which a plurality of actuators 10 are pressed with a force of a maximum load of 1 to 2 tons, the cylinder housing surrounding the cylinder shaft 12 of the actuator 10 has an outer diameter in order to secure the minimum space of the housing block. It is preferable that it is configured in the size of 65 ~ 85mm.

The cylinder shaft 12 is configured such that the stroke speed and the stroke pressure load operate differently for each section stroked by a predetermined control signal of the master controller 20.

That is, in the course of the stroke of the cylinder shaft 12, the no-load area without interference in the whole stroke is set as the high speed moving point and then moved at high speed, and then moves at low speed within the product deviation range, and moves from the constant speed setting point to the constant pressure constant speed. Stroke. For this reason, the press fitting and insertion of predetermined good quality goods are made accurate and quick. A more detailed description will be described later.

4 is a configuration diagram showing an operation panel of the master controller according to the present invention, and FIG. 5 shows another configuration diagram showing an operation panel of the master controller according to the present invention.

As shown in FIG. 4, the master controller 20 includes a power switch 21 for turning on and off power supply from the outside, an operation button 22 for operating the actuator 10, and a cylinder shaft 12. ), The emergency position button 23 which makes the stroke to the pre-operation position, the emergency stop button 24 which stops the operation in the present state during the operation of the actuator 10, and the operating state of the actuator 10 It consists of an operation panel provided with a touch screen 25 that can control the operation of the actuator 10 in real time.

When the power switch 21 is turned on, power is applied from the outside to the master controller 20 from the outside, and under the control of the master controller 20, the actuator 10 enters an operation standby state.

When the operation button 22 is pressed, the actuator 10 is operated by a predetermined control signal of the master controller 20. When the emergency stop button 24 is pressed, the cylinder shaft 12 of the actuator 10 is currently in operation. It stops in the state.

The touch screen unit 25 monitors the operation state of the actuator 10 in real time and can control the operation of the actuator 10 in real time by touching the corresponding portion.

As shown in FIG. 5, the master controller 20 connects the power supply port 26 to which the power line is connected so that power is applied from the outside, and the actuators 10 corresponding to the actuators 10. It is composed of a plurality of connector ports 27 and a control panel further provided with a communication port (RS232C) 28 to be connected to the slave PC (30).

6 to 8 are configuration diagrams illustrating an operation state of the touch screen unit according to the present invention, and the touch screen unit is implemented by partitioning operation states for a plurality of actuators by section, and by touching a predetermined section. It is configured to independently control each actuator operation.

In addition, the touch screen unit 25 includes a manual mode unit in which a user manipulates an operating state of each actuator 10 in real time, and an automatic operation of the actuator 10 by a predetermined control signal of the master controller 20. The mode unit is provided.

FIG. 6 illustrates that the current position of the cylinder shaft, the current pressure load, and the current movement state of the actuator shaft of one of the plurality of actuators are numerically implemented in the touch screen unit. The operating modes for each of the total actuators controlled are divided into sections.

FIG. 7 illustrates the operation mode of the actuator when the operation mode of the section corresponding to the desired actuator is touched in the state where the operation mode for each of the entire actuators controlled by the master controller is divided into sections at the bottom of the touch screen unit. Touching the operation screen of the section that can be changed and corresponding to the desired actuator shows that the stroke speed and stroke pressure load of the actuator can be set up.

FIG. 8 illustrates that the current position, current pressure load, and current movement state of the cylinder shaft of one of the plurality of actuators are implemented as numerical values, and the information check box is displayed in the current window of the touch screen unit. If touched, the data screen finally inputted and set for the actuator is realized, and if the data screen window is touched again, it is closed.

9 to 11 are diagrams illustrating another operation state of the touch screen unit according to the present invention, and FIG. 9 is a touch screen unit when the current operating state of the actuator is good at the upper edge of the touch screen unit. When the "OK" window is temporarily implemented in the center and the current operating state of the actuator is poor in the upper corner of the touch screen, it indicates that OK / NG is set so that the "NG" window is temporarily implemented in the center of the touch screen. .

FIG. 10 illustrates a state in which an "OK" screen window is temporarily implemented in the center of the touch screen unit because the current operating state of the actuator is good.

FIG. 11 illustrates a state in which a setup screen is touched to adjust a stroke speed and a stroke pressure load for each section of a cylinder shaft to a desired size among a plurality of actuators. Touching the setup screen portion of the touch screen unit is switched to the screen window for inputting the stroke speed and stroke pressure load values of the cylinder shaft section for the corresponding actuator on the touch screen.

12 and 13 are diagrams illustrating the setup process of the touch screen unit according to the present invention. The touch screen unit 25 has a stroke speed and a stroke pressure load for each section in which the cylinder shaft 12 is stroked. A setup unit for inputting a numerical value to adjust the desired size is provided.

On the touch screen, the screen window for resetting is entered by inputting the stroke speed and stroke pressure load values of the cylinder shaft for the corresponding actuator.

FIG. 12 shows a process of manipulating input of stroke speed and stroke pressure load of each section of the cylinder shaft for the corresponding actuator on the touch screen, and FIG. 13 shows the cylinder shaft of the corresponding actuator on the touch screen. It shows the process of saving and setting the input value of stroke speed and stroke pressure load for each section.

FIG. 14 is a block diagram illustrating a monitor unit of a slave PC according to the present invention, and a graph and a numerical value are implemented in the monitor unit 31 of the slave PC 30 based on data on an operation of the actuator 10. It is possible to monitor the operating state of the actuator 10 in real time. Reference numeral 31a in FIG. 14 denotes an actuator operation result graph area, and reference numeral 31b denotes an actuator operation result numerical display area.

10: actuator 11: servo motor
12: cylinder shaft 20: master controller
21: power switch 22: operation button
23: home position button 24: emergency stop button
25: touch screen unit 26: power supply port
27: connector port 28: communication port
30: slave PC 31: monitor
31a: Actuator operation result graph area
31b: Numerical display area of actuator operation result

Claims (9)

It is connected to the servo motor 11 which drives the load by external control and this servo motor 11 one-to-one, and this servo motor 11 alternates before and after both directions, so that the stroke can be tensioned and compressed with a constant force. A plurality of actuators 10 having a cylinder shaft 12 to be provided;
A master controller 20 for controlling each of the sub-motors 11 such that a plurality of the actuators 10 are independently stroked;
A slave PC (30) having a user interface in which the user controls the servo motor (11) in real time in association with the master controller (20);
Multi-axis servo press control system configured to include. The method according to claim 1,
The cylinder housing surrounding the cylinder shaft (12) of the actuator (10) is a multi-axis servo press control system, characterized in that the outer diameter of 65 ~ 85mm size. The method according to claim 2,
The cylinder shaft (12) is a multi-axis servo press control system, characterized in that the stroke speed and the stroke pressure load is different for each section stroked by a predetermined control signal of the master controller (20). The method according to claim 3,
The master controller 20
A power switch 21 for turning on and off the power supply from the outside, an operation button 22 for operating the actuator 10, and an in-situ button 23 for stroketing the cylinder shaft 12 to a pre-operation position; And an emergency stop button 24 for stopping the operation in the current state of the actuator 10 and an operation state of the actuator 10 in real time and controlling the operation of the actuator 10 in real time. Multi-axis servo press control system, characterized in that consisting of a control panel provided with a touch screen unit 25. The method of claim 4,
The master controller 20
A power supply port 26 to which a power line is connected so that power is applied from the outside, a plurality of connector ports 27 for connecting to each actuator 10 corresponding to the actuator 10, and the slave PC ( 30) A multi-axis servo press control system comprising a control panel further provided with a communication port (28) connected thereto. The method according to claim 5,
The touch screen 25 is implemented by dividing the operation state of the plurality of actuators by section, and multi-axis, characterized in that to independently control the operation of each actuator 10 by touching a certain section. Servo press control system. The method of claim 6,
The touch screen unit 25 includes a manual mode unit in which a user manipulates an operation state of each actuator 10 in real time, and the actuator 10 is controlled by a predetermined control signal of the master controller 20. Multi-axis servo press control system characterized in that provided with an automatic mode to operate. The method of claim 7,
The touch screen unit 25 is a multi-axis servo press control system, characterized in that the setup section for inputting a numerical value to adjust the stroke speed and stroke pressure load to the desired size for each section in which the cylinder shaft 12 is stroked . The method according to claim 1,
The monitor 31 of the slave PC 30 is implemented with a graph and a numerical value based on the data on the operation of the actuator 10 can be monitored in real time the operating state of the actuator 10 Multi-axis servo press control system.

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