KR20220040597A - Intelligent Press System For Removing Burr - Google Patents

Abstract

An intelligent press system for burr control according to an embodiment of the present invention comprises: a sub-press (100) coupled to a semi-servo mechanical press to receive a compressive force and compress a burr of a target object; a power supply unit (200) providing power to the semi-servo mechanical press; a burr state inspection unit (300) inspecting the burr state of the target object; and a process control unit (400) controlling the power supply unit (200) by interlocking with the burr state inspection unit (300), wherein the burr state inspection unit (300) includes: a data collection module (310) collecting data for inspecting the burr state of the target object; a calculation module (320) calculating a percentage value of the burr size of the target object relative to the thickness of the target object based on the data of the data collection module (310); and a determination module (330) determining whether the percentage value of the burr size of the target object is equal to or less than a predetermined reference value based on the data of the calculation module (320). The process control unit (400) is trained so as to control the power supply unit (200) based on the data of the burr state inspection unit (300) and controls the power supply unit (200) according to the burr state of the target object. The present invention can reduce defect rate and save manufacturing costs.

Description

Intelligent Press System For Removing Burr

The content disclosed in the present specification relates to an intelligent press system for burr control, and more particularly, it includes a sub-press, a power supply unit, a burr state inspection unit, and a process control unit to reduce the burr of the target object by 2% or less. It relates to an intelligent press system for suppression.

The plate for multi-stage reducer, which is a component of the driving motor, which is a key part of the forward and backward driving role of caterpillar construction machinery, is a multi-functional sheet metal used to prevent and fix the gears and gear shafts included in each stage inside the reducer. it's ryu

This is a part that requires high wear resistance and has a high risk of brittle fracture. In order to maintain the high reliability of the reducer, it is essential to maintain the quality and precision of the plate.

However, there is a problem in that the defective rate is excessively generated in the process of removing the burr after the press shearing of the plate, thereby increasing the production cost.

The deburring and edge finishing process in the press shearing process has been recognized as an unavoidable defect although a lot of research has been done in the meantime.

In a normal shearing process, burrs are generated at a level of 10% of the material thickness, and when shaving or fine blanking processes are performed, burrs occur at a level of 3-5%, and it is known that it is impossible to reduce it to 1% or less. . Therefore, the current level of technology is that post-processing such as barrel grinding or edge finishing is essential to remove burrs from press-processed products.

On the other hand, in the case of the barrel polishing process, there is a problem of quality deterioration due to an increase in the defect rate such as surface damage and deformation, and there is a problem in that the production cost increases due to a separate post process such as the barrel polishing process or edge sanding. am.

Accordingly, there is a need for a press system capable of controlling and managing the burr size to 2% or less only by the press method without a separate post process.

KR 1020050015848 A KR 100855636 B1 KR 102000025946 A KR 100844796 B1

The intelligent press system for burr control according to an embodiment of the present disclosure was created to improve the conventional problems as described above, and is composed of a sub-press, a power supply unit, a burr state inspection unit, and a process control unit. An object of the present invention is to provide an intelligent press system for suppressing the burr of 2% or less.

Intelligent press system for burr control according to an embodiment of the present disclosure for solving the above problems,

A sub-press 100 that is coupled to a semi-servo mechanical press and receives compression force to compress the burr of the target object; a power supply unit 200 for providing power to the semi-servo mechanical press; a burr state inspection unit 300 for inspecting the burr state of the target object; and a process control unit 400 interlocking with the burr state inspection unit 300 to control the power supply unit 200; including,

The burr state inspection unit 300 includes a data collection module 310 that collects data for inspecting the burr state of the target object, and the purpose of the target object compared to the thickness based on the data of the data collection module 310 . A calculation module 320 for calculating the percentage value of the burr size of the object, and a determination module 330 for determining whether the percentage value of the burr size of the object is less than or equal to a predetermined reference value based on the data of the operation module 320 ), including

The process control unit 400 is learned to control the power supply unit 200 based on the data of the burr state inspection unit 300 to control the power supply unit 200 according to the burr state of the target object. It can be configured as a feature.

In addition, the sub-press 100 includes a die set 110 having a punch holder 111 , a die holder 112 , a pair of guide posts 113 , and a pair of guide bushes 114 ; a punch fixing plate 120 coupled to the punch holder 111; a punch 130 coupled to the punch fixing plate 120; a die fixing plate 140 coupled to the die holder 112; and a die 150 coupled to the die fixing plate 140 ; It may be configured as comprising a.

In addition, the die set 110 is configured as a CB type in which the punch 130 , the die 150 , and the pair of guide posts 113 are positioned on a straight line in the center of the die set 110 . can be

In addition, the sub-press 100 is positioned to be spaced apart from the die holder 112 and has a lower holder 160 that serves as a buffer during compression; and the die holder 112 and the lower holder 160 are combined and fixed. The die holder chock 170; It may be configured as characterized in that it further comprises.

In addition, the power supply unit 200 includes a motor module 210 for transmitting rotational energy to the semi-servo mechanical press; and an inverter module 220 for changing the rotation speed of the motor module 210; including,

The motor module 210 may be configured as a pole number conversion motor.

In addition, the pole number conversion motor may be configured, characterized in that the number of poles is changed at least two steps or more.

In addition, the process control unit 400 controls the power supply unit 200 based on Equation 1 below,

First, the number of rotations is adjusted by changing the number of poles of the motor module 210, and secondly, the number of rotations is adjusted without lowering the output by changing the frequency of the inverter module 220. .

<Equation 1>

In addition, the process control unit 400 may be configured by controlling the power supply unit 200 so that the size of the burr of the target object is 2% or less of the thickness of the target object.

Accordingly, the intelligent press system for burr control according to an embodiment of the present disclosure,

By reducing the size of the burr to less than 2% of the material thickness, post-processing for deburring can be omitted. It has the advantage of reducing production cost and improving quality and price competitiveness.

In addition, there is an advantage in that price competitiveness can be increased compared to using a servo press while maintaining the servo press function through the semi-servo press using the existing mechanical press.

In addition, it is configured to control the number of rotations through the pole number conversion motor and the inverter, so that it is possible to minimize the drop in the applied load when controlling the rotation speed.

1 is a conceptual diagram schematically showing an intelligent press system for burr control according to an embodiment of the present disclosure;
2 is a block diagram schematically showing the configuration of a sub-press and a die set according to an embodiment of the present disclosure;
3 is a block diagram schematically showing the configuration of a power supply unit and a burr state inspection unit according to an embodiment of the present disclosure;
4 is a cross-sectional view showing the configuration of a sub-press according to an embodiment of the present disclosure;
5 is a view for explaining a die set according to an embodiment of the present disclosure;
6 is a view for explaining a punch and a die according to an embodiment of the present disclosure.

Hereinafter, the technical spirit of the present invention will be described with reference to the drawings, which is for easier understanding, and the scope of the present invention is not limited thereto, and the present invention is only defined by the scope of the claims.

In the description of the embodiment of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the same reference numerals refer to the same components throughout the specification. refers to the element.

1 is a conceptual diagram schematically showing an intelligent press system for burr control according to an embodiment of the present disclosure, FIG. 2 is a block diagram schematically showing the configuration of a sub-press and a die set according to an embodiment of the present disclosure, FIG. 3 is A block diagram schematically showing the configuration of a power supply unit and a burr state inspection unit according to an embodiment of the present disclosure, FIG. 4 is a cross-sectional view showing the configuration of a subpress according to an embodiment of the present disclosure, and FIG. 5 is an embodiment of the present disclosure FIG. 6 is a view for explaining a die set according to the present disclosure, and FIG. 6 is a view for explaining a punch and a die according to an embodiment of the present disclosure.

<Intelligent press system for burr control according to an embodiment of the present disclosure>

1 to 3, the intelligent press system for burr control according to an embodiment of the present disclosure includes a sub-press 100, a power supply unit 200, a burr state inspection unit 300, and a process control unit 400. may be included.

The sub-press 100 is coupled to a semi-servo mechanical press to receive compression force to compress the burr of the target object. Referring to FIGS. 2(a) and 4, the die set ( 110 ), the punch fixing plate 120 , the punch 130 , the die fixing plate 140 and the die 150 may be included.

2B and 4, the die set 110 includes a punch holder 111, a die holder 112, at least a pair of guide posts 113, and at least a pair of guide bushes 114. may be included.

The die set 110 is for accurately fixing the punch 130 and the die 150 and precisely guiding the relative motion of the punch 130 and the die 150. Since the configuration corresponds to the configuration of a general notice, the detailed information will be omitted.

Figure 5 (a) is a plan view showing the coupling relationship of the punch holder 111, Figure 5 (b) is a plan view showing the coupling relationship of the die holder 112, as shown in FIG. The die set 110 is of a CB type (Center post Bushing type) in which the punch 130 , the die 150 , and the pair of guide posts 113 are positioned on a straight line in the center of the die set 110 . Of course, it may be configured in various ways (BB type, DB type, FB type, etc.) as needed, but it is not necessarily limited thereto.

On the other hand, as shown in Figure 4, the punch fixing plate 120 is coupled to the lower surface of the punch holder 111, the punch 130 is coupled to the lower surface of the punch fixing plate 120, the die The fixing plate 140 is coupled to the upper surface of the die holder 112 , and the die 150 is coupled to the top surface of the die fixing plate 140 .

Figure 6 (a) is a view showing an embodiment of the punch 130 according to the present disclosure, Figure 6 (b) is a view showing an embodiment of the die 150 according to the present disclosure, Figure 6 As shown in (b), a space is formed on the upper surface of the die 150 in which the target object can be positioned, and when the target object is positioned in the space, the punch 130 and the die It may be configured to remove the burr by being compressed by 150 .

Here, the target object is preferably positioned on the die 150 so that the burr of the target object faces downward, but is not necessarily limited thereto. it might be

Meanwhile, as shown in FIG. 4 , the die set 110 includes a lower holder 160 and the die holder 112 and the lower holder 160 that are spaced apart from each other in the downward direction of the die holder 112 to provide a cushioning action during compression. It may be configured to further include a die holder chock 170 for fixing by coupling the lower holder 160 .

Each of the components of the sub-press 100 described above may be coupled through a coupling means. An example of such coupling means is bolt coupling. For this, each configuration of the sub-press 100 is at least at a corresponding position when coupled. One or more coupling grooves may be provided.

The power supply unit 200 is for providing power to the semi-servo mechanical press. Referring to FIG. 3 (a), the motor module 210, the inverter module 220 and the It may be configured to include a communication module 230 .

The motor module 210 may be coupled to the semi-servo mechanical press and configured to transmit rotational energy to the semi-servo mechanical press.

Such a motor module 210 may be a pole changing motor (pole changing motor), specifically, the pole number conversion motor is configured to change the number of poles in at least two steps (2/4, 4/8, 6/12 poles, etc.) It is preferable to be

The inverter module 220 may be coupled to the motor module 210 and configured to change the rotational speed of the motor module 210 through frequency change.

On the other hand, even when a pole fixed motor is used as the motor module 210, the rotation speed can be adjusted by the inverter module 220, but there is a drawback in that the output (Power) decreases during deceleration, and when the output decreases, the press It may affect the load capacity or pressurization speed of

On the other hand, in the case of using a pole number conversion motor as the motor module 210, if the primary deceleration is a pole number conversion motor, deceleration is possible without a decrease in output, so deceleration is possible without a decrease in pressurization ability, and the inverter according to processing conditions By fine-tuning the module 220, performance comparable to that of the servo press can be achieved without degrading the pressing ability.

The power supply unit 200 may send and receive data and signals to and from the process control unit 400 to be described later through the communication module 230, and specifically, the rotational speed of the power supply unit 200 is expressed by Equation 1 below. Based on this, it may be configured to be controlled by the process control unit 400 to be described later.

<Equation 1>

On the other hand, in the conventional mechanical press, as the power supply unit 200 is coupled to provide power, the pressing speed and the pressing force can be adjusted, and the stroke change is also partially possible depending on the mechanism, thereby providing a servo press. It can be remanufactured into a semi-servo mechanical press with comparable performance.

Accordingly, the disadvantages of the conventional mechanical press (the problem of not being able to adjust the stroke length, pressing speed, and pressing force) and the disadvantages of the servo press (the price increase due to the attachment of a servo device and modification are almost impossible) are compensated for. By securing a semi-servo mechanical press that satisfies the servo press function that is directly related to machining productivity, price competitiveness can be increased.

The burr state inspection unit 300 is for inspecting the burr state of the target object pressed in the sub-press 100. Referring to FIG. 3 (b), the data collection module 310, the operation module 320 , it may be configured to include a determination module 330 and a communication module 340 capable of sending and receiving data.

The data collection module 310 collects data for inspecting the burr state of the target object, and the data collection module 310 preferably collects data through a vision camera, but is not limited thereto. Of course, it may be configured in various ways (eg, data collection through a stylus, etc.)

The calculation module 320 may be configured to calculate a percentage value of the burr size of the target object compared to the thickness of the target object based on the data of the data collection module 310 .

The determination module 330 may be configured to determine whether the burr size percentage value of the target object is less than or equal to a predetermined base value based on the data of the operation module 320 .

On the other hand, the bur state inspection unit 300 may be configured to further include an alarm module (not shown) that provides an alarm for the burr state of the target object based on the data of the determination module 330 .

The data of the bur state inspection unit 300 may be configured to be transmitted to the process control unit 400 to be described later through the communication module 340 .

The process control unit 400 may be configured to control the power supply unit 200 in conjunction with the above-described burr state inspection unit 300 .

Specifically, the process control unit 400 is learned to control the power supply unit 200 based on the data of the burr state inspection unit 300 to control the power supply unit 200 according to the burr state of the target object. can be configured to To this end, the process control unit 400 may include a machine learning module (not shown).

The process control unit 400 may be configured to control the power control unit 200 based on Equation 1 below. Specifically, the process control unit 400 primarily controls the number of poles of the motor module 210 through a change. It may be configured to adjust the number of rotations and secondarily adjust the number of rotations without lowering the output by changing the frequency of the inverter module 220 .

<Equation 1>

Specifically, the process control unit 400 may be configured to control the power supply unit 200 so that the burr size of the target object is 2% or less of the thickness of the target object by interlocking with the burr state inspection unit 300 there is.

On the other hand, the process control unit 400 analyzes the pulse signal of the motor module 210 to diagnose the abnormal state of the motor module 210 a first abnormality diagnosis module (not shown) and the power supply unit 200 It may be configured to further include a second abnormality diagnosis module (not shown) for diagnosing the abnormal state of the power supply unit 200 by analyzing the power consumption of the.

The first abnormal diagnosis module (not shown) is coupled to the motor module 210 to detect and collect a pulse signal for rotation of the motor module 210. A pulse collection unit (not shown), the pulse collection unit ( A digital conversion unit (not shown) that filters the pulse signal collected in the ) and converts it into a digital signal after sampling at a predetermined period, and the pulse signal frequency component in the case of a normal or abnormal state of the motor module 210 After analyzing the frequency component of the pulse signal based on the digital signal converted by the digital conversion unit (not shown), and comparing it with the reference data to determine the abnormal state of the motor module 210 A first state analysis unit (not shown), to be configured to include a first output unit (not shown) for outputting a result of the state of the motor module 210 analyzed by the first state analysis unit (not shown) can

The second abnormality diagnosis module (not shown) detects a pattern of power consumption of the power supply unit 200 and compares it with a normal pattern or abnormal pattern based on this to diagnose an abnormal state of the power supply unit 200 . can be configured.

To this end, the second abnormality diagnosis module (not shown) calculates a normal power consumption pattern when the power supply unit 200 is in a normal state and an abnormal power consumption pattern when the power supply unit 200 is in an abnormal state. A power consumption pattern storage unit (not shown) for learning and storing, a power consumption measuring unit (not shown) for measuring the power consumption of the power supply unit 200 according to a change in measurement time, the power consumption measuring unit (not shown) ) a second state analysis unit ( Including a second output unit (not shown) for outputting the power consumption measured by the power consumption measuring unit (not shown) and the result of the state analyzed by the second state analysis unit (not shown) can be configured.

Through the first abnormal diagnosis module (not shown) and the second abnormality diagnosis module (not shown), the operation state of the power supply unit 200 is complexly analyzed to quickly determine whether or not the power supply unit 200 is abnormal. can be grasped, it will be helpful for maintenance and repair of the intelligent press system for burr control according to the present disclosure.

In addition, the process control unit 400 interlocks with the first abnormality diagnosis module (not shown) and the second abnormality diagnosis module (not shown) to cause abnormal states of the motor module 210 and the power supply unit 200 . Alternatively, it may be configured to further include an alarm module (not shown) that provides an alarm for a normal state.

Accordingly, the intelligent press system for burr control according to an embodiment of the present disclosure reduces the burr size to 2% or less of the material thickness, thereby omitting the post-processing for deburring, so that the conventional post-processing of deburring It has the advantage of dramatically reducing the defect rate of 20% or more that occurs during deburring with the in-barrel grinding process, and reducing production costs, thereby enhancing quality and price competitiveness.

In addition, there is an advantage that price competitiveness can be increased compared to using a servo press while maintaining the servo press function through the semi-servo press using the existing mechanical press, and the number of poles conversion motor and inverter It has the advantage of being able to minimize the drop in the applied load when the rotation speed is controlled because the rotation speed is controlled through the

Although described above with reference to the drawings according to the embodiment of the present disclosure, it is possible for those of ordinary skill in the art to make various applications, modifications and adaptations within the scope of the present invention based on the above contents. will be.

1000: Intelligent press system for burr control according to an embodiment of the present disclosure
100: sub press 110: die set
111: punch holder 112: die holder
113: guide post 114: guide bush
120: punch fixing plate 130: punch
140: die fixed plate 150: die
160: lower holder 170: die holder chock
200: power supply unit 210: motor module
220: inverter module 230: communication module
300: burr state inspection unit 310: data collection module
320: arithmetic module 330: judgment module
340: communication module 400: process control unit

Claims (8)

A sub-press 100 that is coupled to a semi-servo mechanical press and receives compression force to compress the burr of the target object;
a power supply unit 200 for providing power to the semi-servo mechanical press;
a burr state inspection unit 300 for inspecting the burr state of the target object; and
a process control unit 400 interlocking with the burr state inspection unit 300 to control the power supply unit 200; including,
The burr state inspection unit 300 includes a data collection module 310 that collects data for inspecting the burr state of the target object, and the purpose of the object compared to the thickness of the object based on the data of the data collection module 310 . A calculation module 320 for calculating the percentage value of the burr size of the object, and a determination module 330 for determining whether the percentage value of the burr size of the object is less than or equal to a predetermined reference value based on the data of the operation module 320 ), including
The process control unit 400 is learned to control the power supply unit 200 based on the data of the burr state inspection unit 300 to control the power supply unit 200 according to the burr state of the target object. Intelligent press system for burr control featuring.
According to claim 1,
The sub-press 100 is
a die set 110 having a punch holder 111 , a die holder 112 , a pair of guide posts 113 , and a pair of guide bushes 114 ; a punch fixing plate 120 coupled to the punch holder 111; a punch 130 coupled to the punch fixing plate 120; a die fixing plate 140 coupled to the die holder 112; and a die 150 coupled to the die fixing plate 140 ; Intelligent press system for burr control comprising a.
3. The method of claim 2,
The die set 110 is
An intelligent press system for burr control, characterized in that the punch 130, the die 150, and the pair of guide posts 113 are of a CB type positioned on a straight line in the center of the die set 110.
4. The method of claim 3,
The sub-press 100 is
a lower holder 160 positioned to be spaced apart from the die holder 112 to provide a cushioning action during compression; and a die holder chock 170 for coupling and fixing the die holder 112 and the lower holder 160; Intelligent press system for burr control, characterized in that it further comprises.
According to claim 1,
The power supply unit 200 is
a motor module 210 for transmitting rotational energy to the semi-servo mechanical press; and an inverter module 220 for changing the rotation speed of the motor module 210; including,
The motor module 210 is an intelligent press system for burr control, characterized in that it is a pole number conversion motor.
6. The method of claim 5,
The pole number conversion motor is an intelligent press system for burr control, characterized in that the number of poles is changed in at least two steps.
7. The method of claim 6,
The process control unit 400 controls the power supply unit 200 based on Equation 1 below,
For burr control, characterized in that primarily by changing the number of poles of the motor module 210 to adjust the number of revolutions, and secondly by changing the frequency of the inverter module 220 to adjust the number of revolutions without lowering the output Intelligent press system.

<Equation 1>

8. The method of claim 7,
The process control unit 400 is an intelligent press system for burr control, characterized in that for controlling the power supply unit 200 so that the size of the burr of the target object is 2% or less of the thickness of the target object.

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