WO2011096681A2

WO2011096681A2 - Apparatus for monitoring the state of the tip of a plasma cutting device

Info

Publication number: WO2011096681A2
Application number: PCT/KR2011/000621
Authority: WO
Inventors: 정문영; 하승진; 김지온; 이인하; 이병열
Original assignee: 현대중공업 주식회사
Priority date: 2010-02-05
Filing date: 2011-01-28
Publication date: 2011-08-11
Also published as: WO2011096681A3

Abstract

The present invention relates to an apparatus for monitoring the state of the tip of a plasma cutting device (PCD). The apparatus for monitoring the state of a tip of the present invention is an apparatus for monitoring the state of a PCD tip attached to the PCD torch of a plasma cutting device (PCD), comprising: a control module for monitoring the state of the PCD tip; an elastic-wave detecting sensor; a detection signal receiving module; a cutting process conditions receiving module; a processing conditions package data extraction module; a PCD tip state assessment criteria information extraction module; a PCD-tip-state first assessment module; and a PCD-tip-state first response module.

Description

Plasma Cutter Tip Condition Monitoring Device

The present invention relates to an apparatus for monitoring the state of wear and damage of a PCD tip attached to a plasma cutting device (PCD).

As shown in FIG. 1, in general, under the progress of a cutting process according to the related art, an operator may cut a PCD tip 1a (Tip) disposed at a lower end of a PCD torch 1 (Torch). After approaching 2), a plasma arc (Plasma-Arc) output from the PCD tip 1a is used to proceed with the procedure of cutting the member 2 to be cut.

At this time, since the PCD tip 1a disposed at the bottom of the PCD torch 1 (Torch) directly faces the cutting target member 2, the wear and damage of the PCD tip 1a are enormous in the quality of the cutting process. Will be affected. If the excessively worn and damaged PCD tip (1a) is left as it is, serious problems such as having to rework due to damage of the cutting object member (2) occurs. According to this problem, the operator must determine the degree of wear and damage of the PCD tip (1a) to stop the cutting work before the cutting failure due to the PCD tip (1a), or must immediately cut the cutting work.

In general, conventional conventional methods of determining whether the PCD tip 1a is damaged include, for example, a method depending on the operator's experience, a method of judging by use time, a method by sound detection, a method by voltage sensing, and ultrasonic detection. The method by is shown.

Among the various methods described above, the method that depends on the operator's experience requires the operator to hear the change in sound while being near the PCD tip 1a, or to visually determine the change in the light appearing on the PCD tip 1a. There is a problem that must be dependent on experience, and in addition, there is a problem that the PCD torch 1 which is in the cutting operation is constantly stuck and monitored. In addition, since the usage time varies depending on the surrounding environment and the cutting target member 2, the method of determining the usage time has a problem of low reliability. In addition, the sound, ultrasonic, and voltage methods can be detected when the PCD tip is damaged, and there are many cases of inaccuracies caused by ambient noise, and it is impossible to determine the degree of wear of the PCD tip to the extent that a defective cutting occurs. .

In particular, the thickness T of the cutting object member 2, the separation distance S between the cutting object member 2 and the PCD tip 1a, and the PCD are used to determine the degree of wear and damage of the PCD tip 1a. Several process conditions such as the inclination angle α of the torch 1, the current supply value for the generation of the plasma arc, and the cutting speed of the PCD torch 1 are combined into one process condition package. There is a lot of influence. However, the conventional method described above (e.g., depending on the experience of the operator, the method of judging by the time of use, etc.) is a serious problem in which these various process variables cannot be reflected at all in the damage determination process of the PCD tip 1a. There is this.

As a method for solving such a problem in recent years, Japanese Laid-Open Patent Publication No. 2000-210768 discloses a method of determining whether a cutting process proceeds to a normal state based on the sound after collecting a sound generated by the cutting process. Japanese Patent Laid-Open No. 2001-87863 discloses a method for automatically detecting the occurrence of cutting defects using a sound collecting device.

However, these conventional methods (signal measurement such as sound, ultrasonic waves, voltage, etc.) also do not deviate much from the traditional viewpoint of simply collecting and utilizing the sound generated by the cutting process, and the external noise (while working in the factory) Various sounds generated, noises in the ultrasonic zone, etc. cannot be used for reliable determination. In addition, in the method of detecting the voltage signal between the torch and the member, there is almost no voltage change due to the wear of the PCD tip, so that the PCD tip cannot be excessively worn, and the judgment can be made only when the PCD tip is damaged and the cutting failure occurs. It is a state.

But even this lacks credibility, so workers are reluctant to use it. Even if the worker adopts them as a new < damage determination method of the PCD tip 1a >, only the thickness of the cutting target member 2, the material of the cutting target member 2, etc. are sporadic. It can only be reflected in the damage determination process>. For example, the thickness T of the cutting target member 2, the separation distance S between the cutting target member 2 and the PCD tip 1a, the inclination angle α of the PCD torch 1, the sensor Various process conditions such as installation location, sensor installation method, current supply value for plasma-arc generation, cutting speed of PCD torch 1, etc. are bundled into one process condition package, and each process condition The package cannot be used as a basis for one-to-one correspondence in the process of determining the wear and damage of the PCD tip 1a for each process condition. As a result, the problem that the reliability of the wear and damage determination of the overall PCD tip is greatly reduced is inevitable.

In this situation, when the operator proceeds a series of PCD tip state determination procedures based on the state (excessive wear or damage) judgment criteria information of the abnormal process conditions that do not match the current process conditions at all, There is no choice but to accept various problems. For example, even if the PCD tip is not damaged, the PCD tip is incorrectly determined to be damaged, or even if the PCD tip is damaged, a problem that cannot be recognized occurs.

Furthermore, in the above-described conventional methods (e.g., the method disclosed in Japanese Patent Laid-Open No. 2000-210768, Japanese Patent Laid-Open No. 2001-87863, etc.), the abnormal situation (e.g., sound generated along with the cutting process is precluded). Ignoring the issue of how long the setting is out of the normal range>, if an abnormal situation (for example, the sound generated by the cutting process is outside the preset normal range) occurs, Immediate action is taken, such as forcibly stopping the device. In particular, in the case of sound or ultrasonic waves, false sound is judged due to similar sounds and ultrasonic noise generated in the surroundings, and even if the PCD tip is excessively worn and the cutting defect occurs, there is almost no change in sound, ultrasonic wave, or voltage signal. No judgment can be made.

Even if an operator employs them as a new method of determining the state of the PCD tip 1a, the operator cannot effectively cope with the occurrence of cutting failure due to excessive wear or damage of the PCD tip.

Accordingly, an object of the present invention, a sensor module that can detect the body acoustic wave of the PCD torch generated by the cutting process in the state in which a sensor capable of detecting the acoustic wave on the body of the PCD torch, the sensor module Communication module to receive the acoustic wave output from the sensor module and to communicate with the operator terminal or the PCD controller to receive the process condition information of the cutting process currently in progress, and each stored process The specific process condition package data extracted from the computer module for extracting the specific process condition package data corresponding to the current process condition information from the condition package data, and among the PCD tip state (wear or damage) judgment criteria stored in advance. Elastic wave output from the computer module and sensor module to extract specific PCD tip status determination criteria information Comparing the call with the extracted specific PCD tip status judgment reference information, if it is confirmed that the seismic signal is out of the reference level defined in the specific PCD tip status judgment reference information, a computer program capable of outputting a series of warning data to the operator side. When the module and the seismic signal are found to be out of the reference level defined in the specific PCD tip status judgment reference information, it is confirmed that the deviation of the reference level continues for a series of reference times defined in the PCD tip status judgment reference information. If so, the communication with the PCD controller is to provide a computerized module and the like systematically arranged to stop the progress of the cutting process of the PCD torch. Through this, the operator, for example, the thickness of the cutting target member, the separation distance between the cutting target member and the PCD tip, the tilt angle of the PCD torch, the installation position of the acoustic wave sensor, the installation method of the sensor, the plasma arc (Plasma- After combining various process conditions such as current supply value for arc generation, cutting speed of PCD torch, etc. into one process condition package, each process condition package is added to each process condition. It can be used as a one-to-one counterpart. As a result, the reliability of wear and damage determination of the overall PCD tip can be greatly improved.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

In order to achieve the above object, in the present invention, in the PCD tip state monitoring device for monitoring the wear and damage of the PCD tip attached to the PCD torch of the plasma cutting device (PCD), cutting of the PCD torch A PCD tip state monitoring control module communicating with a PCD controller or an operator terminal for controlling the process progress and controlling a state monitoring procedure of the PCD tip in a state provided with a display window, a speaker, a warning light; A seismic wave sensor for detecting a body acoustic wave signal of a PCD torch generated by a cutting process of the PCD torch in a state of being installed in the body of the PCD torch; A detection signal reception module controlled by the PCD tip state monitoring control module and configured to receive a body acoustic wave signal of the PCD torch; A cutting process condition receiving module controlled by the PCD tip state monitoring control module and communicating with the PCD controller or the worker terminal to receive process condition information of a cutting process currently in progress; Controlled by the PCD tip state monitoring control module, in communication with the cutting process condition receiving module, reading <process condition information of the cutting process currently in progress>, and the current process condition among the previously stored process condition package data. A process condition package data extraction module for extracting specific process condition package data corresponding to the information; Controlled by the PCD tip state monitoring control module, in communication with the process condition package data extraction module to read the specific process condition package data corresponding to the current process condition information, and then stored each PCD tip status determination criteria A PCD tip status determination criteria information extraction module for extracting specific PCD tip status determination criteria information corresponding to the specific process condition package data from the information; The body acoustic wave signal of the PCD torch is controlled by the PCD tip state monitoring control module, and the body acoustic wave signal of the PCD torch is compared with the specific PCD tip state determination reference information. A PCD tip state primary determination module that determines whether or not the reference level defined in FIG. If it is determined that the body acoustic wave signal of the PCD torch is out of the reference level defined in the specific PC tip status determination reference information, the warning data is controlled by the PCD tip status monitoring control module. Disclosed is a PCD tip state monitoring device comprising a PCD tip state primary corresponding module outputting through a beacon.

Under the implementation environment of the present invention, the operator, for example, the thickness of the cutting member, the separation distance between the cutting member and the PCD tip, the inclination angle of the PCD torch, the installation position of the sensor, the installation method of the sensor, the plasma arc ( Process process package such as current supply value for the creation of Plasma-Arc), cutting speed of PCD torch, etc. are bundled into one process condition package, and each process condition package is determined for each damage It can be used as a one-to-one correspondence to>. Accordingly, the reliability of the determination of cut failure due to excessive wear of the overall PCD tip and cut failure due to damage of the PCD tip can be greatly improved.

1 is an exemplary view conceptually showing a cutting process progression of the PCD torch according to the prior art.

Figure 2 is an exemplary diagram conceptually showing the arrangement of the PCD tip condition monitoring apparatus according to the present invention.

3 is an exemplary view conceptually showing a detailed configuration of the PCD tip state monitoring apparatus according to the present invention.

4 to 8 is an exemplary view conceptually showing a detailed operation procedure of the PCD tip state monitoring apparatus according to the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in more detail the PCD tip state (wear and damage) monitoring device according to the present invention.

As shown in FIG. 2, under the progress of the cutting process according to the present invention, the operator places the PCD tip 1a (Tip) disposed at the lower end of the PCD torch 1 (Torch) on the cutting target member 2. After the proximity, the plasma arc (Plasma-Arc) output from the PCD tip (1a), to proceed with the procedure for cutting the cutting object member (2).

In this case, while the PCD controller 4 communicates with the operator terminal 3, various procedures necessary for cutting the member 2 to be cut, for example, the separation between the member 2 to be cut and the PCD tip 1a. Procedure for adjusting distance (S), procedure for adjusting tilt angle (α) of PCD torch (1), procedure for adjusting current supply value for generation of plasma arc (Plasma-Arc), PCD torch ( By systematically controlling the procedure of adjusting the cutting speed of 1), a series of cutting procedures by the PCD torch 1 can be supported without any problems.

At this time, since the PCD tip 1a disposed at the lower end of the PCD torch 1 directly faces the cutting target member 2, the damage of the PCD tip 1a has an enormous effect on the quality of the cutting process. . If the excessive wear or damage of the PCD tip 1a is left as it is, serious problems such as the need to rework due to a poor cutting or damage of the cutting target member 2 occur. Of course, in accordance with this problem, the worker side should determine the degree of wear and damage of the PCD tip (1a) to stop the cutting operation before the cutting failure due to excessive wear on the PCD tip (1a), damage of the PCD tip (1a) If a cutting failure occurs due to this, the cutting operation should be stopped immediately.

In this sensitive situation, as shown in the figure, the present invention further includes the PCD tip condition monitoring apparatus 100 unique to the present invention in a communication pipeline such as the PCD controller 4, the worker terminal 3, and the like. In this case, the PCD tip state monitoring apparatus 100 of the present invention may take the structure of being installed in the program block of the PCD controller 4 or the program block of the worker terminal 3 depending on the situation.

At this time, as shown in Figure 3, the PCD tip state monitoring apparatus 100 according to the present invention, the interface module 102, the PCD controller 4, the worker terminal 3, the host server system 90 ) And a series of communications. In addition, the PCD tip state monitoring apparatus 100 of the present invention includes a PCD tip state monitoring control module 101 which controls the state monitoring procedure of the PCD tip 1a as a whole, and the PCD tip state monitoring control module 101. Acoustic wave detection sensor 201, the detection signal receiving module 103, the cutting process condition receiving module 112, the process condition package data extraction module 104, PCD tip status determination reference information extraction module 105 controlled by the Condition package data storage module 113, PCD tip status determination reference information storage module 110, PCD tip state primary determination module 106, PCD tip state primary correspondence module 107, PCD tip state secondary determination module 108, the PCD tip state secondary correspondence module 109, the PCD tip state processing information report module 111, the detection signal averaging module 112, and the like.

At this time, the seismic wave sensor 201 controlled by the PCD tip state monitoring control module 101 is installed in the body of the PCD torch 1, and the PCD toe generated by the cutting process of the PCD torch 1 is performed. The body acoustic wave signal of the cutch 1 is sensed, and the detected body acoustic wave signal of the PCD torch 1 is transmitted to the PCD tip state monitoring apparatus 100 (see FIG. 2). As described above, the present invention uses an acoustic wave signal, which is distinguished from sound, ultrasonic waves, voltage, and the like, which is not influenced by external noise at all, to monitor the state of the PCD tip 1a.

In the situation where such an infrastructure is equipped, as shown in FIG. 4, the sensing signal reception module 103 controlled by the PCD tip state monitoring control module 101 may use an acoustic wave sensor (eg, an interface module 102). 201), when the body acoustic wave signal of the PCD torch 1 is output from the acoustic wave sensor 201, after receiving it, amplifies the body acoustic wave signal of the received PCD torch 1 and After converting the body acoustic wave signal of the amplified PCD torch 1 into a digital data value, the body acoustic wave signal of the converted PCD torch 1 is transferred to the PCD tip state primary determination module 106.

On the other hand, the cutting process condition reception module 112 controlled by the PCD tip state monitoring control module 101 together with each of the preceding computer module, while communicating with the PCD controller 4 or the operator terminal 3, Process condition information of the current cutting process, for example, the thickness T of the cutting target member 2, the separation distance S between the cutting target member 2 and the PCD tip 1a, and the PCD torch 1. Angle of inclination α, installation position of each sensor 201, installation method of each sensor 201, 202, current supply value for generation of plasma arc, cutting speed of PCD torch 1 And so on. Thereafter, the cutting process condition reception module 112 transmits the process condition information of the current cutting process that has been received to the process condition package data extraction module 104.

In this way, in the situation in which <process condition information of the cutting process currently in progress> is received, the process condition package data extraction module 104 controlled by the PCD state monitoring control module 101 is the preceding cutting process condition receiving module ( 112), a procedure of reading " process condition information of the cutting process in progress " received thereby is performed. The process condition information of the current cutting process is, for example, the thickness (T) of the cutting object member 2, the separation distance (S) between the cutting object member 2 and the PCD tip (1a), PCD torch (1) Inclination angle α, the installation position of each sensor 201, the installation method of each sensor 201, the current supply value for the generation of the plasma arc (Plasma-Arc), the cutting of the PCD torch 1 Speed and so on.

Through this procedure, when <process condition information of the cutting process currently in progress> is read / confirmed, the process condition package data extraction module 104 communicates with the process condition package data storage module 113 and is stored therein. Searching the various process condition package data, and through this, from among the process condition package data previously stored in the information storage area of the process condition package data storage module 113, the specific process condition package data corresponding to the current process condition information Proceed with the procedure to extract. That is, the thickness T of the cutting target member 2, the separation distance S between the cutting target member 2 and the PCD tip 1a, the inclination angle α of the PCD torch 1, and each sensor The installation position of the 201, the installation method of each sensor 201, the current supply value for the generation of the plasma arc (Plasma-Arc), the cutting speed of the PCD torch 1, etc. are specified in accordance with the current process condition information. Process condition package data is extracted (see FIG. 4).

As a result, when the above-described procedure is completed, the process condition package data extracting module 104 is selected from among various process condition package data previously stored in the information storage area of the process condition package data storage module 113, and the < It is possible to effectively obtain specific process condition package data having the same value as process condition information>. As a result, the operator can easily use the specific process condition package data having the same value as the <process condition information of the cutting process currently in progress> as a basis data corresponding to the wear and damage determination process of the PCD tip 1a. .

In this way, in a situation in which specific process condition package data having the same value as the <process condition information of the cutting process currently in progress> is extracted, the PCD tip state determination reference information extraction module controlled by the PCD tip state monitoring control module 101 is extracted. 105 is in communication with the above-described process condition package data extraction module 104 to read / acquire the extracted <specific process condition package data having the same value as the process condition information of the current cutting process>. Proceed to (see Figure 4).

Through this procedure, when <reading / acquiring specific process condition package data having the same value as the process condition information of the cutting process in progress> is completed, the PCD tip status judgment criterion information extraction module 105 performs It communicates with the storage module 110 to retrieve various PCD tip status determination criteria information previously stored therein. Through this, the PCD tip status determination reference information extraction module 105 is selected from among the various PCD tip status determination criteria information previously stored in the information storage area of the PCD tip status determination reference information storage module 110, The process of extracting the specific PC tip status determination reference information corresponding to the specific process condition package data> having the same value as the process condition information is performed. In this case, the identification code corresponding to each process condition package data may be assigned to each PCD tip status determination reference information so that a series of searching processes may be more conveniently performed (see FIG. 4).

As a result, when the above-described procedure is completed, the PCD tip status determination criteria information extraction module 105 is selected from among the various PCD tip status determination criteria information previously stored in the information storage area of the PCD tip status determination criteria information storage module 110. It is possible to effectively obtain the specific PCD tip status determination criteria information corresponding to the <process conditions of the current cutting process>. As a result, the worker can easily avoid the problem of proceeding a series of PCD tip status determination process based on the wear and damage determination criteria information of the wrong process conditions that do not match the current process conditions at all.

On the other hand, through each of the above-described procedures, in the situation that the body acoustic wave signal of the PCD torch 1, the specific PCD tip status determination reference information corresponding to the <process conditions of the current cutting process>, etc. are secured, as shown in FIG. As described above, the PCD tip state primary determination module 106 controlled by the PCD tip state monitoring control module 101 communicates with the detection signal reception module 103, the PCD tip state determination reference information extraction module 105, and the like. Then, a procedure of reading / acquiring the body acoustic wave signal of the PCD torch 1, <specific PCD tip state determination reference information corresponding to the process conditions of the current cutting process>, and the like is performed.

In this way, when the body acoustic wave signal of the PCD torch 1 and <specific PCD tip wear and damage determination criteria information corresponding to the processing conditions of the current cutting process> are completed, the PCD tip state primary judgment module is completed. (106) compares the body acoustic wave signal of the PCD torch 1 with specific PCD tip state determination reference information, so that the body acoustic wave signal of the corresponding PCD torch 1 is defined in the specific PCD tip state determination reference information. Check if it is out of (L1). If the body acoustic wave signal of the corresponding PCD torch 1 is found to be out of the reference level (L1) defined in the specific PCD tip status determination reference information, the primary judgment is that excessive wear or damage has occurred on the PCD tip. It will play a role (see FIG. 5).

Of course, since the PC tip status determination standard information of the present invention utilized in the primary status determination procedure of the PCD tip 1a clearly meets the <process conditions of the current cutting process>, under the implementation environment of the present invention, The PCD tip state determination result obtained by the PCD tip state primary determination module 106 can maintain a very high reliability.

Through each of the above-described procedures, the PCD tip state monitoring control module 101 is sent to the PCD tip state monitoring control module 101 in a situation where the <primary state determination process of the PCD tip 1a based on the body acoustic wave signal of the PCD torch 1 is in progress. The PCD tip state primary correspondence module 107 controlled by the PCD tip state primary determination module 106 performs the function of the PCD tip state primary determination module 106 so that the body acoustic wave signal of the PCD torch 1 is applied to specific PC tip state determination reference information. If it is determined that it is out of the defined reference level (L1, L2), proceed with a series of data generation routines to generate warning data (warning text data, warning picture data, warning light data, warning sound data, etc.) The procedure of outputting the generated warning data through the display window 100a, the speaker 80, the warning lamp 70, and the like is performed.

Of course, through this procedure, a series of warning data (alert text data, warning picture data, warning light data, warning sound data, etc.) is output through the display window (100a), the speaker 80, the warning light (70), etc. In the situation, the operator can quickly recognize that there is a risk of cutting failure due to excessive wear on the PCD tip 1a (or that the PCD tip 1a damage has occurred) and, consequently, effectively It can be done.

On the other hand, through the above procedure, the PCD tip 1a is first identified as being damaged (or there is a risk of cutting failure due to excessive wear), and correspondingly, a series of primary countermeasures (e.g., PCD tip status monitoring and control module in the event that warning text data, warning picture data, warning light data, warning sound data, etc. are taken through the display window 100a, speaker 80, beacon 70) The PCD state secondary determination module 108 controlled by 101 communicates with the PCD tip state primary determination module 106, as shown in FIG. 6, so that the body acoustic wave signal of the PCD torch 1. Checks whether the situation is outside the reference level (L1, L2) defined in the specific PC tip status judgment reference information.

In this way, when it is confirmed that the body acoustic wave signal of the PCD torch 1 is out of the reference level (L1, L2) defined in the specific PCD tip state determination reference information, the PCD state secondary determination module 108 Immediately, the time information described in the body acoustic wave signal of the cutting object member 2 is read, and the deviation of the reference level L1 of the body acoustic wave signal of the PCD torch 1 is defined in the specific PCD tip state judgment reference information. It is determined whether or not it continues for a series of reference time Sts (see FIG. 6).

At this time, when it is confirmed that the deviation of the reference level (L1, L2) of the body acoustic wave signal of the PCD torch 1 for a series of reference time (St) defined in the specific PCD tip status determination reference information, the PCD The tip state secondary determination module 108 immediately determines that the PCD tip 1a is excessively worn or damaged (see FIG. 6).

Of course, since the PC tip status judgment standard information of the present invention utilized for the secondary status judgment procedure of the PCD tip 1a also clearly meets the <process conditions of the cutting process currently in progress>, it is another aspect of the present invention. Even under the implementation environment, the determination result of the cutting failure fear due to excessive wear of the PCD tip obtained by the PCD tip state secondary determination module 108 or the cutting failure due to the damage of the PCD tip maintains a very high reliability.

In this situation, the PCD tip damage secondary countermeasure module 109 controlled by the PCD tip state supervisory control module 101 performs the function of the PCD tip state secondary determination module 108, and the <PCD torch 1 If it is determined that the deviation of the reference level (L1, L2) of the body acoustic wave signal of the body is sustained for a series of reference times (St) defined in the specific PCD tip status judgment reference information, a series of data is generated immediately. The routine proceeds to generate < Cutting process forced stop request data > to " stop the cutting process of the PCD torch 1 ". Subsequently, the PCD tip damage secondary correspondence module 109 transmits the generated < cutting process forced stop request data > to the PCD controller 4 or the worker terminal 3 to cut the PCD torch 1. In addition to forcibly stopping the process, a series of additional data generation routines are performed to generate warning data (warning text data, warning picture data, warning ray data, warning sound data, etc.) The data is output through the display window 100a, the speaker 80, the warning lamp 70, and the like.

Of course, through this procedure, the cutting process of the PCD torch 1 is forcibly stopped and a series of warning data (alert text data, warning picture data, warning light data, warning sound data, etc.) is displayed on the display window 100a. ), The speaker 80, the beacon 70, etc., the operator is in danger of cutting failure due to excessive wear on the PCD tip (1a) (or damage to the PCD tip (1a) caused by cutting Is quickly attained, resulting in effective countermeasures.

In this way, the present invention is a sensor module 201, the sensor module 201 that can detect the body acoustic wave of the PCD torch 1 generated by the cutting process in the state installed in the body of the PCD torch 1, ) To receive the acoustic wave signal output from the sensor module 201 and to communicate with the operator terminal 3 or the PCD controller 4 to receive the process condition information of the cutting process currently in progress. Computer module that can extract the specific process condition package data corresponding to the current process condition information from each of the pre-stored process condition package data, the extraction from the PC chip status determination criteria information previously stored The specific PCD tip state determination reference information corresponding to the specific process condition package data, and the specific PC extracted the acoustic wave signal output from the sensor module 201 and the sensor module 201. D Computation module that can output a series of warning data to the operator when it is confirmed that the seismic signal is out of the reference level (L1, L2) defined in the specific PCD tip status judgment reference information. When the seismic signal is found to be out of the reference level (L1.L2) defined in the specific PCD tip status judgment reference information, the deviation of the reference level (L1, L2) is defined in the PCD tip status judgment reference information. In case it is confirmed that it is being maintained for the reference time (St) of the communication, it is in communication with the PCD controller (4), and systematically arranged to provide a computer module for forcibly stopping the cutting process of the PCD torch (1) do. Accordingly, under the implementation environment of the present invention, the operator may, for example, have a thickness T of the cutting target member 2, a separation distance S between the cutting target member 2 and the PCD tip 1a, and the PCD torch 1. Angle of inclination (α), installation position of each sensor 201, 202, installation method of each sensor 201, 202, current supply value for generation of plasma arc (Plasma-Arc), cutting of PCD torch 1 After combining several process conditions such as speed into one process condition package, each process condition package can be easily utilized as a one-to-one correspondence for <state determination process of PCD tip 1a> for each process condition. . As a result, the reliability of excessive wear and damage determination of the overall PCD tip can be greatly improved.

Meanwhile, as shown in FIG. 3, under the control system of the PCD state monitoring control module 101, in addition to the above-described respective computing modules, the detection signal averaging module 114 and the PCD excessive wear and damage processing information reporting module 111 and the like are further arranged.

At this time, the detection signal averaging module 114 of the present invention exhibits its effect more particularly in the case where a plurality of the above-described elastic wave sensor 201 is installed. In this case, the sensing signal averaging module 114 controlled by the PCD state monitoring control module 101 includes a plurality of acoustic wave sensors 201 and sensing signals via the interface module 102 as shown in FIG. 7. After communicating with the reception module 103 and the like, receiving the body acoustic wave signals of the cutting target member 2 respectively output from each acoustic wave sensor 201, and then performing a series of averaging routines (e.g., converting each acoustic wave signal to a numerical value). After the conversion, the average value of the numerical value is calculated, and the body acoustic wave signal of the received PCD torch 1 is averaged through the progress of the routine of converting the calculated average value back to the acoustic wave signal. Subsequently, the sensing signal averaging module 114 calculates an average value of the body acoustic wave signals of the PCD torch 1, and calculates the average value of the body acoustic wave signals of the calculated PCD torch 1 from the PCD tip state primary determination module 106. Or it is transmitted to the PCD tip state secondary determination module 108, so that the average body acoustic wave signal of the PCD torch 1 can be used as a new basis for the PCD tip 1a state determination.

Of course, under the function of the detection signal averaging module 114, the PCD tip state primary determination module 106 or the PCD tip state secondary determination module 108 is an extremely difficult situation in which a plurality of acoustic wave sensors 201 are installed. Even without any problems, it is possible to proceed with a reliable PCD tip status determination procedure (or status monitoring procedure).

Meanwhile, as shown in FIG. 8, the PCD state processing information reporting module 111 of the present invention controlled by the PCD state monitoring control module 101 includes the PCD tip state primary determination module 107 and the PCD tip described above. It communicates with the state primary correspondence module 107, the PCD tip state secondary determination module 108, the PCD tip state secondary correspondence module 109, and the like. Here, a series of actions are performed by the PCD tip state primary determination module 107, the PCD tip state primary correspondence module 107, the PCD tip state secondary determination module 108, and the PCD tip state secondary correspondence module 109. (Eg, a determination action related to excessive wear or damage of the PCD tip, a corresponding action related to the state of the PCD tip, etc.), the PCD state processing information reporting module 111 proceeds a series of data generation routines, and then each action. Generate PCD tip damage processing information reflecting the details (for example, a determination action related to the state of the PCD tip, a corresponding action related to the state of the PCD tip), and transmit the generated PCD tip state processing information to the upper server system 90. The procedure is to proceed.

Of course, under the performance of the PCD status processing information reporting module 111, the manager who manages the upper server system 90 views the progress of the cutting process of each PCD torch 1 as a whole, and proceeds with the cutting process. Can be more rationally managed.

This invention has an overall useful effect in many fields that require the management of the PCD tip 1a.

And, in the foregoing, specific embodiments of the present invention have been described and illustrated, but it is obvious that the present invention may be variously modified and implemented by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or viewpoint of the present invention, and such modified embodiments should fall within the scope of the appended claims of the present invention.

Claims

In the PCD tip state monitoring device for monitoring the state of the PCD tip attached to the PCD torch of the plasma cutting device (PCD),

A PCD tip state monitoring control module in communication with a PCD controller or an operator terminal for controlling the progress of the cutting process of the PCD torch, and controlling a state monitoring procedure of the PCD tip in a state provided with a display window, a speaker, a warning light;

A seismic wave sensor installed on the body of the PCD torch and detecting a seismic signal of the body of the PCD torch generated by a cutting process of the PCD torch;

A detection signal reception module controlled by the PCD tip state monitoring control module and configured to communicate with the acoustic wave detection sensor to receive a body acoustic wave signal of the PCD torch;

A cutting process condition receiving module controlled by the PCD tip state monitoring control module and communicating with the PCD controller or the worker terminal to receive process condition information of a cutting process currently in progress;

Controlled by the PCD tip condition monitoring control module, and in communication with the cutting process condition receiving module to read the process condition information of the current cutting process, and then to the current process condition information among the previously stored process condition package data. A process condition package data extraction module for extracting corresponding specific process condition package data;

Controlled by the PCD tip state monitoring control module, in communication with the process condition package data extraction module to read the specific process condition package data corresponding to the current process condition information, and then stored each PCD tip status determination criteria A PCD tip status determination criteria information extraction module for extracting specific PCD tip status determination criteria information corresponding to the specific process condition package data from the information;

The body acoustic wave signal of the PCD torch is controlled by the PCD tip state monitoring control module, and the body acoustic wave signal of the PCD torch is compared with the specific PCD tip state determination reference information. A PCD tip state primary determination module that determines whether the reference level is defined in the first state;

If it is determined that the body acoustic wave signal of the PCD torch is out of the reference level defined in the specific PCD tip state determination reference information, the warning data is displayed by the PCD tip state monitoring control module. PCD tip state monitoring device, characterized in that it comprises a PCD tip state primary corresponding module output through the beacon.
The reference level deviation situation of claim 1, wherein the control signal is controlled by the PCD tip state monitoring control module, and the body acoustic wave signal of the PCD torch is out of a reference level defined in the specific PC tip state determination reference information. A PCD tip state secondary determination module that determines whether or not it continues for a series of reference time defined in the specific PCD tip state determination reference information;

When it is determined by the PCD tip state monitoring control module that the reference level deviation of the body acoustic wave signal of the PCD torch continues for a series of reference times defined in the specific PCD tip state determination reference information, And a PCD tip state secondary correspondence module in communication with the PCD controller for forcibly stopping the cutting process of the PCD torch.
The body of the PCD torch according to claim 1, wherein the PCD tip state monitoring control module controls the PCD torch after receiving the body acoustic wave signal of the PCD torch in communication with the acoustic wave sensor. By averaging the seismic signals, the average body acoustic wave signal value of the PCD torch is calculated, and the calculated average body acoustic wave signal of the PCD torch is transmitted to the PCD tip state primary determination module or the PCD tip state secondary determination module. PCD tip state monitoring device further comprises a detection signal averaging module for enabling the average value of the body acoustic wave signal of the PCD torch to be used as the basis of the PCD tip status determination.