CN113534742A - Battery box laser line scanning processing method based on digital twinning - Google Patents
Battery box laser line scanning processing method based on digital twinning Download PDFInfo
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- CN113534742A CN113534742A CN202110645792.8A CN202110645792A CN113534742A CN 113534742 A CN113534742 A CN 113534742A CN 202110645792 A CN202110645792 A CN 202110645792A CN 113534742 A CN113534742 A CN 113534742A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32153—Exchange data between user, cad, caq, nc, capp
Abstract
The invention discloses a battery box laser line scanning processing method based on digital twinning, which comprises the following steps: starting a line laser scanner to scan the outline of the battery box processing surface to obtain scanning outline data, and respectively transmitting the scanning outline data to a numerical control system main control unit and a preset battery box digital twin structure model; comparing the scanning outline data with preset basic data in a preset battery box digital twin structure model, matching to generate a processing data packet, and transmitting the processing data packet to a numerical control system main control unit; comparing the scanning outline data with preset basic data in the main control unit of the numerical control system, and starting a battery box processing program if preset conditions are met; after the battery box processing program is completed, the line laser scanner is started again to scan the current workpiece to obtain the data of the scanned current workpiece, whether the data of the scanned current workpiece is within the preset processing precision tolerance range is judged in the main control unit of the numerical control system, and if yes, the battery box processing program is ended.
Description
Technical Field
The invention relates to the field of numerical control machining, in particular to a battery box laser line scanning machining method based on digital twinning.
Background
The new energy automobile adopts unconventional automobile fuel as a power source or uses conventional automobile fuel and adopts a novel vehicle-mounted power device, integrates advanced technologies in the aspects of power control and driving of the automobile, forms an automobile with advanced technical principle, new technology and new structure, comprises a pure electric automobile, an extended range electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile, other new energy automobiles and the like, can determine the maximum power of an internal combustion engine according to the average required power after adopting the hybrid power, and can continuously charge the battery due to the sustainable work of the internal combustion engine, so the travel of the new energy automobile is the same as that of a common automobile.
The battery case is the important equipment that new energy automobile electric energy stored, can place the battery that new energy automobile used. The characteristics of a cooling groove, a battery face and the like in the battery box processing of a new energy automobile are processed very much, a manual cutter is adopted for measuring and aligning or a measuring head is adopted for workpiece aligning in the traditional processing, and due to the fact that the battery face and the cooling groove which need to be processed with characteristics are numerous, the processing efficiency is low, and manual intervention is more.
Disclosure of Invention
In order to find a more effective implementation scheme for processing the battery box, the invention provides a battery box laser line scanning processing method based on digital twinning, which comprises the following steps:
step S101: starting a line laser scanner to scan the outline of the battery box processing surface to obtain scanning outline data, and respectively transmitting the scanning outline data to a numerical control system main control unit and a preset battery box digital twin structure model;
step S103: comparing the scanning outline data with preset basic data in the preset battery box digital twin structure model, matching the scanning outline data with the preset basic data to generate a processing data packet, and transmitting the processing data packet to the numerical control system main control unit; comparing the scanning outline data with the preset basic data in the main control unit of the numerical control system, and starting a battery box processing program if a preset condition is met;
step S105: and after the battery box processing program is finished, the line laser scanner is started again to scan the current workpiece to obtain the current workpiece scanning data, whether the current workpiece scanning data is within the preset processing precision tolerance range is judged in the main control unit of the numerical control system, and if so, the battery box processing program is finished.
Preferably, before comparing the scanning profile data with preset basic data and generating a processing data packet by matching in the preset battery box digital twin structure model, the method includes the following steps:
and establishing a battery box digital twin structure model.
Preferably, the battery box digital twin structure model comprises a battery box structure module for providing comparison basic data for processing result judgment, a battery box technological parameter database for automatically adjusting technological parameters, a battery box data storage module for storing battery box data and a battery box digital output interface module in communication connection with the numerical control system main control unit, wherein the battery box structure module is model data after the battery box is finally processed, and the battery box technological parameter database is a technological parameter experience database in battery box processing.
Preferably, the starting line laser scanner scans the contour of the battery box processing surface to obtain scanning contour data comprises the following steps:
the numerical control system main control unit sends a battery box scanning instruction to the line scanning data storage industrial personal computer;
and the line scanning data storage industrial personal computer controls the line laser scanner to synchronously scan the contour of the battery box processing surface to generate scanning contour data.
Preferably, the line scanning data storage industrial personal computer controls the line laser scanner to synchronously scan the contour of the battery box processing surface, and the scanning contour data generation comprises the following steps:
the linear scanning encoder triggers the servo motor encoder to synchronize;
and starting the line laser scanner to synchronously scan the outline of the battery box processing surface to generate scanning outline data.
Preferably, the communication protocol of the numerical control system main control unit and the line scanning data storage industrial personal computer is an EthNet protocol.
Preferably, the communication protocol of the line scanning data storage industrial personal computer and the line laser scanner is an EthNet protocol.
Preferably, after the step of judging whether the scanned current workpiece data is within the preset machining precision tolerance range in the main control unit of the numerical control system, the method further includes the following steps:
if not, the steps S101-S105 are executed again.
Preferably, the preset condition and the preset machining precision are confirmed based on technical parameters of the battery case.
Compared with the prior art, the battery box laser line scanning processing method based on the digital twinning has the following beneficial effects:
according to the method for battery box laser line scanning machining based on digital twinning, the battery box is completely automated from clamping, measuring to qualified machining precision through the preset battery box digital twinning structure model and the line laser scanner, the automation degree is high, the mechanism is simple, the machining efficiency is improved, and the precision of a workpiece is improved to a certain degree.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a battery box laser line scanning processing method based on digital twinning according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In some of the flows described in the present specification and claims and in the above figures, a number of operations are included that occur in a particular order, but it should be clearly understood that these operations may be performed out of order or in parallel as they occur herein, with the order of the operations being indicated as 101, 103, etc. merely to distinguish between the various operations, and the order of the operations by themselves does not represent any order of performance. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a battery box laser line scanning processing method based on digital twinning according to an embodiment of the present invention, and as shown in fig. 1, the battery box laser line scanning processing method based on digital twinning according to an embodiment of the present invention includes the following steps:
step S101: and starting a line laser scanner to scan the outline of the battery box processing surface to obtain scanning outline data, and respectively transmitting the scanning outline data to a numerical control system main control unit and a preset battery box digital twin structure model.
In some embodiments, before the line laser scanner is started to scan the contour of the battery box processing surface to obtain scanning contour data, a communication hardware network between the line laser scanner and a numerical control system main control unit needs to be established, and the communication hardware network specifically comprises the line laser scanner, a line scanning data storage industrial personal computer and a numerical control system main control unit, wherein the line scanning data storage industrial personal computer is a control unit for controlling the line scanning laser to execute actions and can receive scanning instructions sent by the numerical control system main control unit; the numerical control system host unit is a main control unit of the machine tool; the line laser scanner is a scanning device that performs battery case processing.
In detail, the starting line laser scanner scans the outline of the battery box processing surface to obtain scanning outline data comprises the following steps:
the numerical control system main control unit sends a battery box scanning instruction to the line scanning data storage industrial personal computer;
the line scanning data storage industrial personal computer controls the laser scanner to synchronously scan the outline of the battery box processing surface to generate scanning outline data.
Specifically, the line scanning data storage industrial personal computer controls the laser scanner to synchronously scan the outline of the battery box processing surface, and the scanning outline data generation comprises the following steps:
the linear scanning encoder triggers the servo motor encoder to synchronize;
and starting the line laser scanner to synchronously scan the outline of the battery box processing surface to generate scanning outline data.
In some embodiments, the communication protocol of the numerical control system main control unit and the line scanning data storage industrial personal computer is an EthNet protocol. The communication protocol of the line scanning data storage industrial personal computer and the line laser scanner is also an EthNet protocol. The EthNet protocol is the ethernet protocol.
Step S103: comparing the scanning outline data with preset basic data in the preset battery box digital twin structure model, matching the scanning outline data with the preset basic data to generate a processing data packet, and transmitting the processing data packet to the numerical control system main control unit; and comparing the scanning outline data with the preset basic data in the main control unit of the numerical control system, and starting a battery box processing program if a preset condition is met.
In some embodiments, before comparing the scan profile data with the preset basic data and matching to generate the processing data packet in the preset battery box digital twin structure model, the method comprises the following steps:
and establishing a battery box digital twin structure model.
Preferably, the battery box digital twin structure model comprises a battery box structure module for providing comparison basic data for processing result judgment, a battery box technological parameter database for automatically adjusting technological parameters, a battery box data storage module for storing battery box data and a battery box digital output interface module in communication connection with the main control unit of the numerical control system, wherein the battery box structure module is model data after the battery box is finally processed, and the battery box technological parameter database is a technological parameter experience database in battery box processing.
In detail, the generated scanning contour data is sent to a main control unit of the numerical control system on one hand, and is sent to a battery box data storage module in a preset battery box digital twin structure model on the other hand to perform data simulation calculation processing, and a processing data packet is generated after process parameter matching processing is performed, and then a calculation result is output to the main control unit of the numerical control system through a battery box digital output interface module. And the main control unit of the numerical control system analyzes and compares the two results, and accordingly, the battery box processing program is started.
It should be noted that although the numerical control system main control unit and the preset battery box digital twin structure model are compared, the comparison content ranges of the two are different, and particularly, the preset battery box digital twin structure model needs to generate a processing data packet after the comparison so as to be processed specifically.
Step S105: and after the battery box processing program is finished, the line laser scanner is started again to scan the current workpiece to obtain the current workpiece scanning data, whether the current workpiece scanning data is within the preset processing precision tolerance range is judged in the main control unit of the numerical control system, and if so, the battery box processing program is finished.
In some embodiments, after the determining, in the main control unit of the numerical control system, whether the scanned current workpiece data is within the preset processing precision tolerance range, the method further includes the following steps:
if not, the steps S101-S105 are executed again.
It should be noted that the preset conditions and the preset machining precision in the embodiment of the present invention are determined based on the technical parameters of the battery box, and the embodiment of the present invention is not limited thereto.
The embodiment of the invention is based on a digital twinning technology and adopts a line laser scanner to perform line scanning for processing a battery box, a line laser forming surface is used for scanning to obtain a point cloud image of a wide surface profile, coordinates of points to be measured are identified and obtained through an algorithm, then a processing compensation amount is calculated and sent to a main control unit of a numerical control system and a preset battery box digital twinning structure model, and through data storage and comparison of the preset battery box digital twinning structure model, automatic interpretation and processing from clamping to processing of the battery box, to measurement of the workpiece processing and to whether the processing is completed are automatically completed, and finally the battery box workpiece meeting the precision requirement is obtained.
Compared with the prior art, the battery box laser line scanning processing method based on the digital twin has the following beneficial effects that:
according to the method for battery box laser line scanning machining based on digital twinning, provided by the embodiment of the invention, the battery box is completely automated from clamping, measuring to qualified machining precision through the preset battery box digital twinning structure model and the line laser scanner, the automation degree is high, the mechanism is simple, the machining efficiency is improved, and the precision of a workpiece is improved to a certain extent.
In the several embodiments provided in this application, it should be understood that the disclosed system, module and method may be implemented in other ways. For example, the above described module embodiments are merely illustrative, and for example, the division of the steps is only one logical functional division, and there may be other divisions when the actual implementation is performed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A battery box laser line scanning processing method based on digital twinning is characterized by comprising the following steps:
step S101: starting a line laser scanner to scan the outline of the battery box processing surface to obtain scanning outline data, and respectively transmitting the scanning outline data to a numerical control system main control unit and a preset battery box digital twin structure model;
step S103: comparing the scanning outline data with preset basic data in the preset battery box digital twin structure model, matching the scanning outline data with the preset basic data to generate a processing data packet, and transmitting the processing data packet to the numerical control system main control unit; comparing the scanning outline data with the preset basic data in the main control unit of the numerical control system, and starting a battery box processing program if a preset condition is met;
step S105: and after the battery box processing program is finished, the line laser scanner is started again to scan the current workpiece to obtain the current workpiece scanning data, whether the current workpiece scanning data is within the preset processing precision tolerance range is judged in the main control unit of the numerical control system, and if so, the battery box processing program is finished.
2. The method for battery pack laser line scan processing based on digital twin as claimed in claim 1, wherein before comparing the scan profile data with the preset basic data and matching to generate the processing data packet in the preset battery pack digital twin structural model, the method comprises the following steps:
and establishing a battery box digital twin structure model.
3. The digital twin-based battery pack laser line scanning method as claimed in claim 2, wherein the battery pack digital twin structure model comprises a battery pack structure module for providing comparison basic data for processing result judgment, a battery pack process parameter database for automatic adjustment of process parameters, a battery pack data storage module for battery pack data storage, and a battery pack digital output interface module in communication connection with the numerical control system main control unit, wherein the battery pack structure module is model data after final processing of the battery pack, and the battery pack process parameter database is a process parameter experience database in battery pack processing.
4. The method for battery pack laser line scan processing based on digital twinning as claimed in claim 1, wherein said activating line laser scanner to scan the profile of the battery pack processing surface to obtain the scanning profile data comprises the following steps:
the numerical control system main control unit sends a battery box scanning instruction to the line scanning data storage industrial personal computer;
and the line scanning data storage industrial personal computer controls the line laser scanner to synchronously scan the contour of the battery box processing surface to generate scanning contour data.
5. The method for battery box laser line scanning machining based on digital twinning as claimed in claim 4, wherein the line scanning data storage industrial personal computer controls the line laser scanner to synchronously scan the contour of the battery box machining surface, and generating scanning contour data comprises the following steps:
the linear scanning encoder triggers the servo motor encoder to synchronize;
and starting the line laser scanner to synchronously scan the outline of the battery box processing surface to generate scanning outline data.
6. The digital twin-based battery pack laser line scanning processing method as claimed in claim 4, wherein the communication protocol of the numerical control system main control unit and the line scanning data storage industrial personal computer is an EthNet protocol.
7. The method for digital twin-based battery pack laser line scan processing as claimed in claim 4, wherein the communication protocol of the line scan data storage industrial personal computer and the line laser scanner is the EthNet protocol.
8. The method for battery-box laser line scanning machining based on digital twin as claimed in claim 1, wherein after said determining whether the scanned current workpiece data is within a preset machining precision tolerance range in the numerical control system main control unit, further comprising the steps of:
if not, the steps S101-S105 are executed again.
9. The method for battery pack laser line scan processing based on digital twin as claimed in claim 1, wherein the preset condition and the preset processing precision are confirmed based on technical parameters of the battery pack.
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2021
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Application publication date: 20211022 |