CN211375414U - Height adjustment control device and system of laser processing head - Google Patents
Height adjustment control device and system of laser processing head Download PDFInfo
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- CN211375414U CN211375414U CN201922052540.5U CN201922052540U CN211375414U CN 211375414 U CN211375414 U CN 211375414U CN 201922052540 U CN201922052540 U CN 201922052540U CN 211375414 U CN211375414 U CN 211375414U
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Abstract
The utility model relates to a laser beam machining field, concretely relates to height-adjusting controlling means of laser beam machining head and system thereof. The height-adjusting control device comprises a signal receiving module, a height signal processing module and a height adjusting module, wherein the signal receiving module is used for receiving the height signal of the laser processing head, extracting the height signal and separating out a frequency signal corresponding to the height signal; the main control module is connected with the signal receiving module and is used for sampling and processing the frequency signals separated by the signal receiving module; the ETHERCAT communication module is connected with the main control module; the ETHERCAT communication module acquires signals sampled and processed by the main control module and transmits the signals to the external numerical control device, and the external numerical control device adjusts the height of the laser processing head according to the signals transmitted by the ETHERCAT communication module. The utility model discloses can support the numerical control device of all ETHERCAT main website, the flexibility is high, and the commonality is strong, and the interference killing feature is strong, and the wiring is simple, convenient maintenance, and troubleshooting is easy, has improved laser cutting machine's debugging efficiency, greatly reduced cost greatly.
Description
Technical Field
The utility model relates to a laser beam machining field, concretely relates to height-adjusting controlling means of laser beam machining head and system thereof.
Background
In laser cutting, in order to ensure the cutting effect of a workpiece and the quality of a cut, a constant gap between a nozzle of a laser processing head and the workpiece is required. The gap between the workpiece and the machine tool is often changed due to uneven and curved surface of the workpiece, uneven surface of the machine tool, and the like. In order to keep the gap between the nozzle of the cutting head and the workpiece constant throughout the cutting process, a height-adjustment control system must be used to automatically keep the gap constant.
In a traditional laser cutting height-adjusting scheme, or an analog quantity mode and a 24V industrial digital interface are adopted to communicate with a numerical control system, and the traditional laser cutting height-adjusting scheme needs to be matched with a general analog quantity IO module and a general digital IO module for use, so that the cost is high, and the anti-interference capability is poor; or a user-defined bus is adopted for communication, and the universality cannot be realized.
As shown in fig. 1, at least 3 modules are needed in the traditional laser cutting height-adjusting scheme, dozens of lines needing to be connected are needed, the equipment cost is high, the wiring is complex, the parameter configuration needs to be operated on the height adjusting box in the electric cabinet, and an operator is difficult to find out fault points when the fault occurs.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a height-adjusting controlling means of laser beam machining head and system thereof, overcome that current laser cutting increases equipment cost height in the scheme high, the wiring is complicated, and the interference killing feature is poor, and parameter configuration operation is inconvenient, the problem of trouble spot investigation difficulty.
The utility model provides a technical scheme that its technical problem adopted is: provided is a height adjustment control device for a laser processing head, comprising:
the signal receiving module is used for receiving the height signal of the laser processing head, extracting the height signal and separating out a frequency signal corresponding to the height signal;
the main control module is connected with the signal receiving module and is used for sampling and processing the frequency signals separated by the signal receiving module; and
the ETHERCAT communication module is connected with the main control module; wherein the content of the first and second substances,
the ETHERCAT communication module acquires signals sampled and processed by the main control module and transmits the signals to the external numerical control device, and the external numerical control device adjusts the height of the laser processing head according to the signals transmitted by the ETHERCAT communication module.
The utility model discloses a further preferred scheme is: the signal receiving module comprises a filter circuit unit for filtering the height signal and a shaping and level conversion unit respectively connected with the filter circuit unit and the main control module, the filter circuit unit is used for filtering the height signal, separating out a frequency signal corresponding to the height signal and transmitting the frequency signal to the shaping and level conversion unit for shaping and level conversion, and the shaping and level conversion unit is used for transmitting the frequency signal after shaping and level conversion to the main control module.
The utility model discloses a further preferred scheme is: the main control module comprises a sampling unit for sampling frequency signals, a signal processing unit connected with the sampling unit, and a cache unit respectively connected with the signal processing unit and the ETHERCAT communication module, wherein the signal processing unit transmits the frequency signals acquired by sampling of the sampling unit to the cache unit for caching after digital filtering and linearization processing.
The utility model discloses a further preferred scheme is: the ETHERCAT communication module comprises an ETHERCAT network chip in communication connection with the main control module and a network transmission interface unit connected with the ETHERCAT network chip, wherein the ETHERCAT network chip acquires signals sampled and processed by the main control module and transmits the signals to the network transmission interface unit, and the network transmission interface unit transmits the signals to an external numerical control device.
The utility model discloses a further preferred scheme is: the network transmission interface unit comprises an RJ45 interface used for connecting an external numerical control device and a network transformer, and the network transformer is respectively connected with an ETHERCAT network chip and an RJ45 interface.
The utility model discloses a further preferred scheme is: the height-adjusting control device further comprises a packaging module provided with an input port and at least one output port, the signal receiving module, the main control module and the ETHERCAT communication module are integrally arranged in the packaging module, the signal receiving module is connected with the input port, and the ETHERCAT communication module is connected with each output port.
The utility model discloses a further preferred scheme is: the main control module and the ETHERCAT communication module carry out signal transmission through a parallel bus.
The utility model provides a technical scheme that its technical problem adopted is: the height-adjusting control system comprises the height-adjusting control device of the laser processing head and a numerical control device connected with an ETHERCAT communication module of the height-adjusting control device for signal transmission, wherein the numerical control device receives signals processed by the height-adjusting control device and adjusts the height of the laser processing head according to the signals transmitted by the ETHERCAT communication module.
The utility model discloses a further preferred scheme is: the height-adjusting control system further comprises a laser processing head connected with the numerical control device and used for processing the workpiece, and a sensor used for acquiring a height signal of the laser processing head, wherein the sensor transmits the acquired height signal to a signal receiving module of the height-adjusting control device.
The utility model discloses a further preferred scheme is: the numerical control device comprises an operation interface for inputting setting parameters.
The utility model has the advantages that compared with the prior art, through setting up signal receiving module, host system, and ETHERCAT communication module, signal receiving module receives the height signal of laser beam machining head, and draw the height signal, isolate the frequency signal that corresponds with the height signal, host system samples and handles this frequency signal, ETHERCAT communication module obtains the signal that host system sampled and handled, transmit it to outside numerical control device, outside numerical control device adjusts the height of laser beam machining head according to the signal of ETHERCAT communication module transmission, realize the height-adjusting control of laser beam machining head, outside numerical control device as long as the ETHERCAT master station can carry out signal transmission with height-adjusting control device, the communication of host computer and next computer has been greatly expanded, more parameter configuration settings have been provided, the flexibility is high, the commonality is strong, the interference killing feature is strong, and the wiring is simple, dozens of lines are omitted, the limited space of the electric cabinet body is saved, the maintenance is convenient, the troubleshooting is easy, the debugging efficiency of the laser cutting machine tool is greatly improved, and the cost is greatly reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of a prior art laser cutting height adjustment and analog quantity control scheme;
fig. 2 is a block diagram showing the structure of a height adjustment control device of a laser processing head according to the present invention;
fig. 3 is a block diagram of the signal receiving module of the present invention;
fig. 4 is a block diagram of the main control module of the present invention;
fig. 5 is a block diagram of an ethernet communication module according to the present invention;
fig. 6 is a block diagram of the network interface unit of the present invention;
fig. 7 is a block diagram showing a height adjustment control system of the laser processing head according to the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 2, the present invention provides a preferred embodiment of a height adjustment control device for a laser processing head.
A height adjustment control device of a laser processing head comprises a signal receiving module 10, a height signal processing module and a height adjusting module, wherein the signal receiving module is used for receiving the height signal of the laser processing head, extracting the height signal and separating out a frequency signal corresponding to the height signal; the main control module 20 is connected with the signal receiving module 10 and is used for sampling and processing the frequency signals separated by the signal receiving module 10; and an ethernet communication module 30 connected to the main control module 20; the ethernet communication module 30 obtains the signal sampled and processed by the main control module 20 and transmits the signal to the external numerical control device 50, and the external numerical control device 50 adjusts the height of the laser processing head 60 according to the signal transmitted by the ethernet communication module 30.
By arranging the signal receiving module 10, the main control module 20 and the ethernet communication module 30 in communication connection with the external numerical control device 50, the main control module 20 samples and processes the frequency signal corresponding to the height signal separated by the signal receiving module 10 and then transmits the frequency signal to the ethernet communication module 30, the ethernet communication module 30 acquires the signal sampled and processed by the main control module 20 and transmits the signal to the external numerical control device 50, and the external numerical control device 50 adjusts the height of the laser processing head 60 according to the signal transmitted by the ethernet communication module 30, thereby realizing the height adjustment control of the laser processing head 60. The external numerical control device 50 can be adopted as long as the numerical control device 50 of the ETHERCAT master station can adopt the ETHERCAT bus for signal transmission, the communication between an upper computer and a lower computer is greatly expanded, more parameter configuration settings are provided, the flexibility is high, the universality is strong, the anti-interference capability is strong, the wiring is simple, dozens of lines are omitted, the limited space of an electric cabinet is saved, the maintenance is convenient, the fault troubleshooting is easy, the debugging efficiency of the laser cutting machine tool is greatly improved, and the cost is greatly reduced.
Wherein, the operator can set the related functions and parameters of the height-adjusting control device through the external numerical control device 50, and transmit through the ethernet communication module 30 of the height-adjusting control device, so as to set the related functions and parameters of the height-adjusting control device.
And, the height signal of the laser processing head 60 can be obtained by an external sensor or other measuring device and then transmitted to the signal receiving module 10 of the height-adjusting control device.
As shown in fig. 3, the present invention provides a preferred embodiment of a signal receiving module 10.
Specifically, the signal receiving module 10 includes a filter circuit unit 11 for performing filtering processing on the height signal, and a shaping and level converting unit 12 connected to the filter circuit unit 11 and the main control module 20, respectively, where the filter circuit unit 11 performs filtering processing on the height signal, separates out a frequency signal corresponding to the height signal, and transmits the frequency signal to the shaping and level converting unit 12 for shaping and level conversion, and the shaping and level converting unit 12 transmits the frequency signal after shaping and level conversion to the main control module 20.
The filter circuit unit 11 filters out higher harmonics and direct current components of the obtained signal, separates out a frequency signal corresponding to the height signal, the shaping and level conversion unit 12 shapes and converts the level of the frequency signal, transmits the shaped and level-converted frequency signal to the main control module 20, and the main control module 20 samples the frequency signal, specifically, samples the frequency signal by using a multi-cycle synchronous frequency measurement method.
Referring to fig. 4, the main control module 20 includes a sampling unit 21 for sampling the frequency signal, a signal processing unit 22 connected to the sampling unit 21, and a buffer unit 23 respectively connected to the signal processing unit 22 and the ethernet communication module 30, where the signal processing unit 22 performs digital filtering and linearization processing on the frequency signal sampled and acquired by the sampling unit 21, and then transmits the frequency signal to the buffer unit 23 for buffering.
The sampling unit 21 samples the frequency signal by using a multi-period synchronous frequency measurement method, so that the sampling precision is improved. The signal processing unit 22 performs digital filtering and linearization processing on the frequency signal, transmits and stores the related signal to the buffer unit 23 for buffering, when a data exchange period between the height adjustment control device and the external numerical control device 50 is up, the related signal of the buffer unit 23 is transmitted and written into the ethernet communication module 30, the ethernet communication module 30 is in communication connection with the external numerical control device 50, transmits the related signal to the external numerical control device 50 through an ethernet network protocol, and the external numerical control device 50 adjusts the height of the laser processing head 60 according to the signal transmitted by the ethernet communication module 30, so that the gap between the laser processing head 60 and the workpiece is kept constant, and the height adjustment control of the laser processing head 60 is realized.
Meanwhile, the external numerical control device 50 sends a control signal as required, that is, the setting of the related functions and parameters of the height-adjusting control device is transmitted to the main control module 20 through the ethernet communication module 30, so as to implement the setting of the related functions and parameters of the height-adjusting control device. Referring to fig. 5, in this embodiment, the ethernet communication module 30 includes an ethernet network chip 31 communicatively connected to the main control module 20, and a network transmission interface unit 32 connected to the ethernet network chip 31, where the ethernet network chip 31 acquires a signal sampled and processed by the main control module 20, and transmits the signal to the network transmission interface unit 32, and the network transmission interface unit 32 transmits the signal to the external numerical control device 50.
Specifically, referring to fig. 6, the network transmission interface unit 32 includes an RJ45 interface 321 for connecting to the external numerical control device 50, and a network transformer 322, and the network transformer 322 is connected to the ethernet network chip 31 and the RJ45 interface 321, respectively.
The network transformer 322 is mainly used for signal level coupling; firstly, the signal can be enhanced, so that the transmission distance of the signal is longer; secondly, the ETHERCAT network chip 31 is isolated from the outside, the anti-interference capability is greatly enhanced, and the chip is greatly protected (such as lightning stroke); thirdly, when the network ports with different levels are received, the mutual equipment cannot be influenced.
And the model of the ethernet network chip 31 may be a control chip of an ethernet slave station such as TMC8462, TMC8461, TMC8460, LAN9252, and the like.
And the main control module 20 and the ethernet communication module 30 perform signal transmission through a parallel bus. Namely, the main control module 20 and the ethernet network chip 31 perform reading and writing through the parallel bus, and complete the transmission of signals and related functions.
In this embodiment, the height-adjusting control device further includes a packaging module 40 having an input port and at least one output port, the signal receiving module 10, the main control module 20, and the ethernet communication module 30 are integrally disposed in the packaging module 40, the signal receiving module 10 is connected to the input port, and the ethernet communication module 30 is connected to each of the output ports.
The number of output ports on the encapsulation module 40 may be one, two, or more than two. The encapsulation module 40 in this embodiment is provided with two output ports, and the two output ports can be respectively connected to the previous ethernet slave station module and the next ethernet slave station module, so as to implement a topology structure of an ethernet bus.
And, the package module 40 may be a circuit board or a package housing having an input port and at least one output port. The signal receiving module 10, the main control module 20 and the ETHERCAT communication module 30 are integrated and arranged in the packaging module 40, so that the wiring between the upper computer and the lower computer is simplified, the wiring is simple, dozens of circuits are omitted, the limited space of an electric cabinet is saved, the maintenance is convenient, the troubleshooting is easy, the debugging efficiency of the laser cutting machine tool is greatly improved, and the cost is greatly reduced.
As shown in fig. 7, the present invention provides a preferred embodiment of a height adjustment control system for a laser processing head.
A height-adjusting control system of a laser processing head comprises the height-adjusting control device of the laser processing head and a numerical control device 50 connected with an ETHERCAT communication module 30 of the height-adjusting control device for signal transmission, wherein the numerical control device 50 receives signals processed by the height-adjusting control device and transmits control signals to the height-adjusting control device, and the height of a laser processing head 60 is adjusted according to the signals transmitted by the ETHERCAT communication module 30.
The height-adjusting control device of the height-adjusting control system is provided with a signal receiving module 10, a main control module 20 and an ETHERCAT communication module 30 which is in communication connection with an external numerical control device 50, wherein the main control module 20 samples and processes frequency signals corresponding to height signals separated by the signal receiving module 10 and then transmits the frequency signals to the ETHERCAT communication module 30, the ETHERCAT communication module 30 is in communication connection with the numerical control device 50 to realize the height-adjusting control of the laser processing head 60, the height-adjusting control device and the numerical control device 50 adopt an ETHERCAT bus to transmit signals, the numerical control device 50 can be adopted by any numerical control device 50 of an ETHERCAT master station, the communication between an upper computer and a lower computer is greatly expanded, an operator can carry out configuration setting of related parameters through the numerical control device 50, more parameter configuration settings are provided, the flexibility is high, the universality is strong, the anti-interference capability is strong, the wiring is simple, dozens of lines are omitted, the limited space of the electric cabinet body is saved, the maintenance is convenient, and the cost is greatly reduced.
Further, the height-adjusting control system further comprises a laser processing head 60 connected with the numerical control device 50 for processing the workpiece, and a sensor 70 for acquiring a height signal of the laser processing head 60, wherein the sensor 70 transmits the acquired height signal to the signal receiving module 10 of the height-adjusting control device.
The laser processing head 60 performs processing operations on a workpiece, including laser cutting, laser drilling, and the like. The sensor 70 acquires its height signal in the application of the laser processing head 60 and transmits the height signal to the signal receiving module 10, and the calibration of the sensor 70, that is, the determination of the input-output conversion relationship of the sensor 70, is required.
The control signal transmitted from the numerical control device 50 to the height-adjusting control device includes a calibration request signal, a nozzle loss clearing signal, a real-time calibration signal, a perforation state, a follow-up start state, a 0-point frequency record, a filter cut-off frequency, a cutting collision delay, a perforation collision delay, and the like. The signal transmitted to the numerical control device 50 by the heightening control device through the ETHERCAT communication module 30 includes a nozzle collision signal, a radio frequency cable disconnection signal, a sensor 70 side collision signal, a calibration confirmation signal, a calibration result signal, an amplifier frequency value, calibration point data and the like besides a processed height signal, an ETHERCAT bus is adopted between the numerical control device 50 and the heightening control device to transmit the signal, an operator can configure parameters through the numerical control device 50, the numerical control device 50 sends a control signal to the heightening control device to realize calibration, real-time calibration, elimination of nozzle loss alarm, recording of zero frequency, starting of follow-up and other related functions, filtering parameters and parameter setting of some alarm delays, and the parameter configuration has high flexibility, strong anti-interference capability and simple operation.
Further, the numerical control device 50 includes an operation interface for inputting setting parameters. An operator can input a control signal of the laser processing head 60 through the operation interface, the parameter setting inside the control device is heightened, the height value of the laser processing head 60 and the like, and the operation is convenient.
The utility model discloses the accent high control system of laser beam machining head has avoided adopting interference and a large amount of 24V industry digital connection line that analog quantity communication brought among the traditional numerical control system, has also avoided the closure of special self-defined digital bus.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. A height adjustment control device for a laser processing head, comprising:
the signal receiving module is used for receiving the height signal of the laser processing head, extracting the height signal and separating out a frequency signal corresponding to the height signal;
the main control module is connected with the signal receiving module and is used for sampling and processing the frequency signals separated by the signal receiving module; and
the ETHERCAT communication module is connected with the main control module; wherein the content of the first and second substances,
the ETHERCAT communication module acquires signals sampled and processed by the main control module and transmits the signals to the external numerical control device, and the external numerical control device adjusts the height of the laser processing head according to the signals transmitted by the ETHERCAT communication module.
2. The height-adjusting control device according to claim 1, wherein the signal receiving module comprises a filter circuit unit for filtering the height signal, and a shaping and level-converting unit respectively connected to the filter circuit unit and the main control module, the filter circuit unit filters the height signal, separates out a frequency signal corresponding to the height signal, and transmits the frequency signal to the shaping and level-converting unit for shaping and level-converting, and the shaping and level-converting unit transmits the frequency signal after shaping and level-converting to the main control module.
3. The apparatus according to claim 1, wherein the main control module comprises a sampling unit for sampling the frequency signal, a signal processing unit connected to the sampling unit, and a buffer unit connected to the signal processing unit and the ethernet communication module, respectively, and the signal processing unit performs digital filtering and linearization processing on the frequency signal sampled and obtained by the sampling unit, and then transmits the frequency signal to the buffer unit for buffering.
4. The height-adjusting control device according to claim 1, wherein the ethernet communication module includes an ethernet network chip communicatively connected to the main control module, and a network transmission interface unit connected to the ethernet network chip, the ethernet network chip obtains the signal sampled and processed by the main control module and transmits the signal to the network transmission interface unit, and the network transmission interface unit transmits the signal to an external numerical control device.
5. The height-adjusting control device as claimed in claim 4, wherein the network transmission interface unit comprises an RJ45 interface for connecting with an external numerical control device, and a network transformer, the network transformer is respectively connected with an ETHERCAT network chip and an RJ45 interface.
6. The apparatus according to claim 1, further comprising a packaging module having an input port and at least one output port, wherein the signal receiving module, the main control module and the ethernet communication module are integrally disposed in the packaging module, the signal receiving module is connected to the input port, and the ethernet communication module is connected to each of the output ports.
7. The apparatus according to any one of claims 1 to 6, wherein the master control module and the ETHERCAT communication module perform signal transmission via a parallel bus.
8. A height adjustment control system for a laser processing head, comprising a height adjustment control device for a laser processing head as claimed in any one of claims 1 to 7, and a numerical control device connected to the ethernet communication module of the height adjustment control device for signal transmission, the numerical control device receiving a signal processed by the height adjustment control device and adjusting the height of the laser processing head according to the signal transmitted by the ethernet communication module.
9. The height-adjustment control system as claimed in claim 8, further comprising a laser processing head connected to the numerical control device for processing the workpiece, and a sensor for acquiring a height signal of the laser processing head, the sensor transmitting the acquired height signal to a signal receiving module of the height-adjustment control device.
10. The heightening control system of claim 8, wherein the numerical control device includes an operator interface for inputting setting parameters.
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| CN201922052540.5U CN211375414U (en) | 2019-11-25 | 2019-11-25 | Height adjustment control device and system of laser processing head |
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| CN201922052540.5U CN211375414U (en) | 2019-11-25 | 2019-11-25 | Height adjustment control device and system of laser processing head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039810A (en) * | 2022-01-10 | 2022-02-11 | 至新自动化(北京)有限公司 | Flexible automatic control system based on Ethernet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039810A (en) * | 2022-01-10 | 2022-02-11 | 至新自动化(北京)有限公司 | Flexible automatic control system based on Ethernet |
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