CN115432086A - Variable-station automobile production line using flexible interface and automobile production method - Google Patents
Variable-station automobile production line using flexible interface and automobile production method Download PDFInfo
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- CN115432086A CN115432086A CN202211285678.XA CN202211285678A CN115432086A CN 115432086 A CN115432086 A CN 115432086A CN 202211285678 A CN202211285678 A CN 202211285678A CN 115432086 A CN115432086 A CN 115432086A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/18—Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/005—Inspection and final control devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention relates to the field of automobile manufacturing, in particular to a variable-station automobile production line using a flexible interface. The manufacturing execution system dynamically plans the number, location, and length of the stations. The vehicle body identification system identifies vehicle information of a vehicle to be assembled, the manufacturing execution system finishes station planning according to the vehicle information, and issues the vehicle information to the production control system to finish production procedure planning. The production control system uses flexible interfaces to connect different production modules. The production monitoring system collects data to realize closed-loop control. The invention also comprises a method for producing the automobile by using the variable-station automobile production line with the flexible interface. The invention can automatically select the manufacturing parameters, conveniently and rapidly adjust the production processes, the sequence and the number of the stations, improve the production efficiency and realize more optimized production line planning.
Description
Technical Field
The invention relates to the field of automobile manufacturing, in particular to a variable-station automobile production line using a flexible interface and an automobile production method.
Background
As shown in fig. 1, a vehicle position obtaining method commonly used in a whole vehicle manufacturing enterprise currently locates a vehicle position through a vehicle body identification system 200 (AVI system) and an inductive switch 405. The inductive switch 405 is installed at the entrance of the conveyor line 3021 of the production line, and when a vehicle newly enters the production line and passes through the inductive switch 405, the conveyor line 3021 is driven by the roller 3022 to advance, so that the vehicle newly entering the production line and the original vehicle on the production line are driven to integrally move to the next station.
Referring to FIG. 1, a vehicle on a production line, such as vehicle A, either moves to the next station (e.g., from station 1 to station 2) or completes the production line work off the production line. Vehicle a is placed on carrier 401 into the production line, and the position of carrier 401 is fixed. Therefore, when the vehicle 401 with the vehicle a enters the production line, the inductive switch 405 is triggered to operate, so that the manufacturing execution system 100 (MES system) knows that the vehicle a enters the first station. When a subsequent carrier 401 of the carrier 401 of vehicle a passes the inductive switch 405, the manufacturing execution system 100 concludes that vehicle a enters the second station, and so on, to complete the movement of vehicle a between stations. If the vehicle leaves the production line, the vehicle body recognition system 200 and the manufacturing execution system 100 of the subsequent production line record and track the new station of the vehicle A.
When the vehicle A moves, all vehicles on a production line, including the vehicle B, the vehicle C and the vehicle D, can also move forwards and respectively enter the corresponding stations 3, the vehicle C moves to the station 2, and the vehicle D enters the station 1. The vehicle D, which is a newly entering vehicle, is first acquired by the vehicle body recognition system 200 and sent to the manufacturing execution system 100. Subsequently, as vehicle D passes inductive switch 405, manufacturing execution system 100 marks vehicle D that it is currently located at station 1. After entering the production line, the manufacturing execution system 100 performs the same logic processing as that of the vehicle a, and updates the information of the station where the vehicle D is located in the manufacturing execution system 100. The vehicle arriving at the station completes the assembly production process of the station under the control of the production control system 300.
The main defects of the prior art include:
1. the current vehicle position cannot be obtained in real time because the entire production line has no acquisition device or calculation device to feed back information to the MES system, and the MES system can only infer the vehicle position by the preset distance between the vehicles and the notification that the vehicles enter the production line. When the actual running conditions of the conveying line are inconsistent with the preset constants, a large deviation occurs between the actual moving position of the vehicle and the position considered by the MES system, and the production line is stopped seriously, for example, a robot on a station cannot be matched with the position of the vehicle to be assembled.
2. The requirement of production line extension station can not be satisfied. In the prior art, each station is already determined in the design stage, and then a corresponding production module (production apparatus) is installed according to each station. Because the MES system cannot accurately infer the location of the vehicle, the equipment at the workstation needs to be left with sufficient margin to account for the vehicle misalignment. After the surplus stack of a plurality of equipment of same station, can lose a lot of spaces that can install equipment originally. Particularly, when a plurality of vehicle models need to be supported for production, the difficulty of production line layout is aggravated by a large amount of equipment required by different vehicle models. When necessary production equipment cannot be arranged at an original station, a new production line needs to be rebuilt, and the cost is high.
3. In the integration of the manufacturing execution system and the production control system, a dedicated interface is realized by using dedicated logic according to different production modules, although customization can be rapidly completed for different production tools when a new production line is deployed, when the production line needs to be fine-tuned, the production line needs to be completely re-deployed, because the dedicated interface is used from the production module to the production control system to the manufacturing execution system, and the dedicated interface can be different along with different types and even models of the production modules. Therefore, once the introduction of a new production module is involved, the logic of the production control system is modified, and the logic of the manufacturing execution system is modified, so that the post-debugging maintenance is huge in engineering quantity.
Disclosure of Invention
The invention aims to provide a variable-station automobile production line using a flexible interface and an automobile production method, which mainly solve the problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is to provide a variable-station automobile production line using a flexible interface, wherein a conveying line is used for driving a vehicle to be assembled to move forward, and a plurality of stations corresponding to production procedures are arranged along the conveying line; the manufacturing execution system is connected to the vehicle body identification system, the production control system, and the production monitoring system;
the manufacturing execution system stores a plurality of groups of manufacturing parameters, and selects one group to be issued to the production control system according to the vehicle information acquired by the vehicle body identification system;
the production control system comprises a configuration management module and a production module; the configuration management module stores the manufacturing parameters issued by the manufacturing execution system, configures all the production processes of each station and controls the action of the production module; the production module completes the transferring, processing and assembling work of the vehicle to be assembled. The configuration management module is connected with different production modules by using a flexible interface, so that the communication connection mode between the manufacturing execution system and the production control system is not changed along with the production modules contained in the generation control system;
the production monitoring system collects production line state information and feeds the production line state information back to the manufacturing execution system, and closed-loop control is achieved on production of a production line.
Furthermore, the manufacturing execution system comprises a production line management module, a vehicle management module, a production monitoring module, a database module and a quick communication module;
the production line management module provides a man-machine interaction interface to receive the manually input manufacturing parameters and is also used for scheduling the vehicle management module and the production management module to work cooperatively; the vehicle management module is connected to the vehicle body identification system and transmits the vehicle information acquired by the vehicle body identification system to the production line management module; the production management module is connected to the production control system, and the vehicle information and the manufacturing parameters are transmitted to the production control system; the production monitoring module is connected to the production monitoring system and transmits the production line state information acquired by the production monitoring system to the production line management module; the rapid communication module provides direct communication connection between the production control system and the production monitoring system and is used for bypassing the production management module to carry out rapid data interaction; the manufacturing parameters and the vehicle information are stored in the database module.
Further, the vehicle body identification system comprises an RFID reading module; the RFID reading module scans a radio frequency tag installed on the vehicle to be assembled and reads the vehicle information; the vehicle information at least contains a vehicle identification code.
Further, the configuration management module comprises a file storage unit and a communication unit; the file storage unit stores the manufacturing parameters corresponding to the vehicles to be assembled; the communication unit is used for connecting the file storage unit to the manufacturing execution system and the production module.
Further, the production monitoring system comprises a carrier, a vehicle monitoring module, a carrier monitoring module, a travel acquisition module and an inductive switch;
the carrier is fixed on the conveying line of the production line, loads the vehicle to be assembled to advance and sequentially passes through the stations; the vehicle monitoring module acquires the arrangement state information of the vehicle to be assembled on the carrier; the carrier monitoring module and the inductive switch are sequentially installed from the inlet of the production line; the carrier monitoring module acquires the in-position state information of the carrier on the crawler; when the carrier and the vehicle to be assembled cross the inductive switch, reporting limit state information; the stroke acquisition module acquires stroke state information of the conveying line; the production line state information reported by the production monitoring system comprises the arrangement state information, the in-position state information, the limit state information and the travel state information.
Furthermore, the stroke acquisition module comprises a data acquisition unit, a data calculation unit and a data storage unit; the data acquisition unit is an encoder; the data calculation unit converts the data of the encoder into the travel state information; the data storage unit is connected to the data acquisition unit and the data calculation unit.
The invention also provides a method for assembling an automobile by using the variable-station automobile production line using the flexible interface, which is characterized by comprising the following steps of:
firstly, a production line is deployed for the vehicle to be installed;
secondly, initializing a production line according to the vehicle information of the vehicle to be assembled, and determining the number, the position and the length of the stations;
and finally, the vehicle to be assembled enters a production line to start production.
Further, when the vehicle to be installed is deployed on the production line,
firstly, adjusting the production control system and the production monitoring system; in the production control system, adjusting a production module, and connecting the newly added production module to the configuration management module by using the flexible interface without modifying a communication interface between the production control system and the manufacturing execution system;
then, configuring the work station, the production control system and the production monitoring system in the manufacturing execution system; in the manufacturing execution system, adjusting the manufacturing parameters corresponding to the vehicle to be installed, so as to specify the number, position and length of the stations included in a production line, and also to specify the production process corresponding to each station;
finally, the redundant equipment which is not used after the configuration is completed is optionally removed from the production control system and the production monitoring system, and is contained in the production control system, and the redundant production modules are removed.
Further, when initializing the process of the production line:
firstly, starting the production monitoring system to start to collect the production line state information;
secondly, the vehicle to be assembled reaches the entrance of a production line, and the vehicle body identification system reads the vehicle information;
then, the manufacturing execution system selects one group from a plurality of groups of manufacturing parameters stored by the manufacturing execution system based on the vehicle information reported by the vehicle body identification system, configures the number, the position and the length of the stations on a production line, and issues the selected manufacturing parameters to the production control system;
finally, the production control system configures the production process of each station according to the received manufacturing parameters.
Further, the production process of the vehicle to be assembled comprises the steps of:
step S1, the production monitoring system collects the production line state information and reports the production line state information to the manufacturing execution system;
s2, the manufacturing execution system determines the current station of the vehicle to be assembled by combining the position and the length of the station of the current production line and the position information of the vehicle to be assembled on the conveying line, which is contained in the state information of the production line, and sends the current station of the vehicle to be assembled to the production control system;
s3, the production control system executes the production process corresponding to the current station;
and S4, after the production process of the current station is completed, the manufacturing execution system drives the vehicle to be assembled to advance along the conveying line and returns to the step S1.
In view of the technical characteristics, the variable-station automobile production line and the automobile production method using the flexible interface automatically adapt to different types of vehicles for production by using preset manufacturing parameters without reinstalling a new production line, thereby greatly reducing the cost of enterprises. Compared with the prior art, the method has the following advantages: ,
1. in the invention, the position of the vehicle to be assembled on the production line is accurately sensed by the manufacturing execution system and can be adjusted through manufacturing parameters, so that the number, size and length of the stations can be flexibly adjusted.
2. In the present invention, the manufacturing process can be adjusted by adjusting the manufacturing parameters without reprogramming the logic in the manufacturing execution system.
3. In the invention, by the flexible interface, when a production module is newly added or modified, the interfaces of a manufacturing execution system and a production control system do not need to be reprogrammed, and the debugging process is simplified.
4. In the invention, in the same station, the manufacturing execution system can correctly and orderly initiate a processing command to the production control system according to the accurate position of the vehicle to be assembled, thereby simplifying the layout of the production line and enabling the arrangement of the production modules along the production line to be more compact.
Drawings
FIG. 1 is a schematic diagram of a prior art structure corresponding to a variable-station automobile production line using a flexible interface according to the present invention;
FIG. 2 is a schematic diagram of a preferred embodiment of a variable station automotive production line using a flexible interface in accordance with the present invention;
FIG. 3 is a detailed schematic diagram of a manufacturing execution system and body recognition system in a preferred embodiment of the variable position automotive production line using a flexible interface of the present invention;
FIG. 4 is a schematic diagram of a production control system in a preferred embodiment of a variable station automotive production line using a flexible interface in accordance with the present invention;
FIG. 5 is a schematic diagram of a flexible interface for the Ann light module in the production control system of the preferred embodiment of the present invention;
FIG. 6 is a schematic diagram of a production monitoring system in a preferred embodiment of a variable position automotive production line using a flexible interface in accordance with the present invention;
FIG. 7 is a method flow diagram of a preferred embodiment of the present invention for a method of manufacturing an automobile using a variable position automobile production line using a flexible interface;
FIG. 8 is a flowchart of a detailed method of the line deployment of FIG. 7;
FIG. 9 is a flowchart of a detailed method of line initialization in FIG. 7;
fig. 10 is a flowchart of a detailed method of the in-line production of fig. 7.
In the figure: 100-manufacturing execution system, 200-vehicle body identification system, 300-production control system, 400-production monitoring system;
101-a production line management module, 102-a vehicle management module, 103-a production monitoring module, 104-a production management module, 105-a database module, and 106-a rapid communication module;
201-an RFID reading module;
301-configuration management module, 302-production module; 303-an lamp module;
3011-file storage unit, 3012-communication unit; 3021-conveying line, 3022-roller, 3023-tightening gun, 3024-filling device, and 3025-gluing device; 3031-first standard interface; 3032-second standard interface;
401-vehicle, 402-vehicle monitoring module, 403-vehicle monitoring module, 404-travel collection module, 405-inductive switch; 4031-data acquisition unit, 4032-data calculation unit, 4033-data storage unit.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Referring to fig. 2 to 6, the present invention discloses a variable station automobile production line using a flexible interface. As shown, a preferred embodiment thereof is comprised of a manufacturing execution system 100 (MES), a vehicle body identification system 200 (AVI), a production control system 300, and a production monitoring system 400.
The automobile production line comprises a plurality of stations which can be dynamically planned, each station corresponds to a group of production processes, and the production processes comprise production actions and sequences required to be completed by each production module 302 on the station. The production process of each station generally corresponds to the vehicle type to be produced, and the production process is dynamically planned according to vehicle information when a production line is initialized. Before the automobile to be assembled enters the production line, the automobile body identification system 200 (AVI) identifies the automobile information, and then the manufacturing execution system 100 (MES) finishes the planning of the station and the production process. Then, the conveyor line 3021 drives the vehicle to be equipped to pass through each station in turn. After the automobile enters a station, a static assembly mode and a dynamic assembly mode are adopted according to the configuration of different production lines. In the static assembly mode, the conveyor line 3021 stops moving, the automobile is in a static state at a station, the production process at the station is completed by the production modules 302 (various robots, tightening guns 3022, and the like) installed around the station, and then the conveyor line 3021 is restarted to drive the automobile to the next station. In the dynamic assembly mode, the conveying line 3021 moves forward at a constant speed, and the production modules 302 installed around the station follow the vehicle moving forward at a constant speed to complete the production process of the station.
The manufacturing execution system 100 is a control core of the whole automobile production line, and is used for configuring the positions and the sequence of the stations on the automobile production line, configuring the production process corresponding to each station through the production control system 300, instructing the production control system 300 to complete the automobile assembly according to the production process, and configuring the production monitoring system 300. Meanwhile, it is responsible for connecting the vehicle body identification system 200, the production control system 300 and the production monitoring system 400, and providing a communication channel therebetween.
The vehicle body identification system 200 obtains vehicle information, such as a vehicle identification code, by including an RFID reading module 201 to read a radio frequency tag mounted on a vehicle to be assembled. The vehicle information may also include additional information, such as vehicle model information, etc., to speed up the data retrieval, but the vehicle integrity information is retrieved from database module 105 of manufacturing execution system 100 by using the vehicle identification code as a key.
The production control system 300 itself also has the capability of storing manufacturing parameters, but it only stores the manufacturing parameters for the current production issued by the manufacturing execution system 100, and does not store the manufacturing parameters for all vehicles supported by the production line. Specifically, the production control system 300 is constituted by a configuration management module 301 and a production module 302. According to different automobile production lines, each configuration management module 301 corresponds to one or more production modules 302. The configuration management module 301 includes a file storage unit 3011 and a communication unit 3012. The file storage unit 3011 stores manufacturing parameters for instructing current production, and the configuration management module 301 extracts information from the manufacturing parameters to instruct and control the production module 302 to complete the production process of the corresponding station. The communication unit 3012 connects the configuration management module 301 to the manufacturing execution system 100 and the production module 302. The communication unit 3012 provides a flexible interface between the manufacturing execution system 100 and the production modules 302. The flexible interface functions as: when the external interface type of the production module 302 itself changes, the communication unit 3012 maintains the communication capability with the changed production module 302 by extending its flexible interface, and at the same time, ensures that the communication interface between the communication unit 3012 and the manufacturing execution system 100 is unchanged. Thus, when the production line adjustment involves addition and modification of the production module 302, only the corresponding communication unit 3012 needs to be upgraded, thereby avoiding modification of other systems in the production line.
The production module 302 contains not only the assembly devices at each station, such as the tightening guns 3023, the filling devices 3024 and the gluing devices 3025, but also the devices associated with the entire production line, such as the delivery line 3021 and the rollers 3022 of the application delivery line 3021. The rollers 3022 drive the conveyor line 3021 forward, transferring the vehicles to be assembled between the various stations. The assembling equipment is arranged on the station and used for finishing the machining and assembling work of the vehicle to be assembled. The sequence of actions of all the assembly devices at a station constitutes the production process of the station.
Referring to FIG. 5, in addition, the production module 302 includes a device for human intervention control of the operation of the production line, such as a light module 303. The safety lamp calling is one of main functions of a safety lamp module, and the principle is that an operator calls corresponding responsible persons (team leader, security, quality, logistics and the like) under abnormal conditions by operating a calling terminal at the production line, so that the equipment outage rate is reduced, and the working efficiency is improved. On the same production line, different Ann lamp calling areas are generally divided according to the characteristics of different assembling devices. Unlike prior designs where different amp call regions use different interface standards, in this embodiment all of the amp modules 303 (a, B and C) communicate with the configuration management unit 301 using a first standard interface 3031, while the configuration management unit 301 communicates with the manufacturing execution system 100 using a second standard interface 3032, such that when:
1. adjustment of the calling area, requiring replacement of different types of Ann light modules 303
2. Adjustment of the number or type of Ann light modules 303
The automatic adaptation (flexibility) of the Ann light calling system can be realized only by adjusting configuration in manufacturing parameters and then processing the configuration by the configuration management module 301 without performing secondary development of a program and stopping production on site for joint debugging.
The production monitoring system 400 is used to continuously collect production line status information, such as vehicle status and vehicle location, during normal operation, and then transmit the information to the manufacturing execution system 100. The production monitoring system 400 is composed of a carrier 401, a vehicle monitoring module 402, a carrier monitoring module 403, a travel acquisition module 404, and an inductive switch 405. The production line state information reported by the production monitoring system comprises arrangement state information, in-position state information, limit state information and travel state information. The carriers 401 are fixed on a conveyor line 3021, and the vehicle to be assembled should be placed on the carriers 401, then be carried by the conveyor line 3021 into the production line, and then pass through each processing station in turn. The vehicle monitoring module 402 is configured to identify whether the vehicle to be assembled is properly mounted on the vehicle 401, and provide mounting status information. From the entrance of the production line, a carrier monitoring module 403 (ohm dragon E3JK-TR 12-C) and an inductive switch 405 (ohm dragon WLG 2-LD) are installed in sequence. The vehicle monitoring module 403 is used to identify whether the vehicle 401 itself is properly mounted on the track 3021, providing seating status information. The vehicle monitoring module 402 and the vehicle monitoring module 403, in combination, can determine that both the vehicle 401 itself and the vehicle to be assembled on the vehicle 401 are properly positioned. Mounted behind the vehicle monitoring module 403 is a proximity switch 405 that provides limit status information, which in combination with the travel acquisition module 404, is used to determine the precise location of the vehicle to be assembled on the production line. Specifically, when the vehicle to be assembled passes over the inductive switch 405, the limit state information is reported to the manufacturing execution system 100 to determine the zero point corresponding to the vehicle to be assembled. The stroke acquisition module 404 includes a data acquisition unit 4031, a data calculation unit 4032 and a data storage unit 4033, and is configured to acquire and calculate stroke data of the delivery line 3021. The data acquisition unit 4031 is an encoder, such as an ohm dragon E6C3-AG5C 256P/R2M. The encoder data is converted by the data calculation unit 4032 to obtain the travel distance of the conveyor line 3021, which is reported as the travel state information. The data storage unit 4033 is connected to the data acquisition unit 4031 and the data calculation unit 4032 and provides storage support for calculations, such as saving input parameters, intermediate results, and final results. Knowing the zero point and the travel distance of the conveyor line 3021, the distance the vehicle travels along with the conveyor line 3021 can be calculated, and in conjunction with the position and length information of the station in the manufacturing execution system 100, it can be determined whether the vehicle has reached a particular station and a particular location in that station (e.g., 30% of the location of that station).
Referring to fig. 7, the present invention also discloses a method for assembling an automobile using a variable station automobile production line using a flexible interface, which is characterized by comprising the steps of:
step S100, a production line is deployed for the vehicle to be installed.
Step S200, initializing a production line.
The vehicle body identification system reads vehicle information of a vehicle to be assembled, then the manufacturing execution system determines the number, the position and the length of the stations according to the vehicle information, and issues manufacturing parameters to complete the configuration of the stations and the production process.
And step S300, the vehicle to be assembled enters a production line and starts to be produced.
Referring to fig. 8, step S100 further includes the following steps:
and S101, adjusting equipment of a production control system and a production monitoring system.
In the production control system, the newly added production module is connected to the configuration management module by using the flexible interface without modifying a communication interface between the production control system and the manufacturing execution system. And S102, configuring a station, a production control system and a production monitoring system in the manufacturing execution system.
In the manufacturing execution system, adjusting the manufacturing parameters corresponding to the vehicle to be installed includes:
1. the station configuration of the production line, i.e. the number, position and length of the included stations, is specified.
2. And (3) specifying the production process corresponding to each station, namely how many production modules participate in each station, and the operation and the sequence of the operation which are required to be executed by each production module.
And step S103, removing redundant equipment which is not used any more after the configuration is finished in the production control system and the production monitoring system.
In the production control system, redundant production modules are removed. This step is optional, and as long as the production line plan is met, each module can be kept unchanged and is only not referenced in the manufacturing parameters for subsequent reuse.
Referring to fig. 9, step S200 further includes the following steps:
step S201, a production monitoring system is started to start collecting production line state information.
In step S202, the vehicle body recognition system reads vehicle information of the vehicle to be assembled.
After the vehicle to be assembled enters the production line, the vehicle body identification system identifies the vehicle information through an RFID reading module (such as SIMATIC RF 360T) and transmits the vehicle information to the manufacturing execution system.
In step S203, the manufacturing execution system completes the production line planning.
The manufacturing execution system selects one group from a plurality of groups of manufacturing parameters stored by the manufacturing execution system by using the vehicle identification code in the vehicle information to complete the planning of the number, the position and the length of the variable stations, and issues the manufacturing parameters to the production control system.
And step S204, finishing planning by the production control system.
The production control system configures the production process for each station based on the received manufacturing parameters.
Referring to fig. 10, step S300 further includes the following steps:
step S301, the production monitoring system collects production line state information and reports the production line state information to the manufacturing execution system.
When the vehicle to be assembled passes through the position of the inductive switch, the production monitoring system sends information to the manufacturing execution system, and the manufacturing execution system sets the zero point of the stroke for the vehicle to be assembled. And then, the production monitoring system periodically reports the travel state information of the conveying line and the execution condition of the production process on each station to the manufacturing execution system.
Step S302, the manufacturing execution system determines the current station of the vehicle to be assembled by combining the position and the length of the station of the current production line and the position information of the vehicle to be assembled on the conveying line, which is contained in the state information of the production line, and sends the current station of the vehicle to be assembled to the production control system.
And the manufacturing execution system compares the position of the vehicle to be assembled on the conveying line, and judges that the vehicle to be assembled enters a certain station when the position of the vehicle to be assembled is within the position and length interval of the station.
And step S303, the production control system executes the production process corresponding to the current station.
And step S304, after the production process of the current station is completed, the manufacturing execution system drives the vehicle to be assembled to move forward along the conveying line, and the step S301 is returned.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A variable station car production line using flexible interface uses a conveying line to drive a car to be assembled to move forward, and a plurality of stations corresponding to production procedures are arranged along the conveying line, and the variable station car production line is characterized by comprising a manufacturing execution system, a car body recognition system, a production control system and a production monitoring system; the manufacturing execution system is connected to the vehicle body identification system, the production control system, and the production monitoring system;
the manufacturing execution system stores a plurality of groups of manufacturing parameters, and selects one group of manufacturing parameters to be issued to the production control system according to the vehicle information acquired by the vehicle body identification system;
the production control system comprises a configuration management module and a production module; the configuration management module stores the manufacturing parameters issued by the manufacturing execution system, configures all the production processes of each station and controls the action of the production module; the production module completes the transferring, processing and assembling work of the vehicle to be assembled. The configuration management module is connected with different production modules by using a flexible interface, so that the communication connection mode between the manufacturing execution system and the production control system is not changed along with the production modules contained in the generation control system;
the production monitoring system collects production line state information and feeds the production line state information back to the manufacturing execution system, and closed-loop control is achieved on production of a production line.
2. The variable-station automobile production line with the flexible interface as claimed in claim 1, wherein the manufacturing execution system comprises a production line management module, a vehicle management module, a production monitoring module, a database module and a rapid communication module;
the production line management module provides a man-machine interaction interface for receiving the manually input manufacturing parameters and is also used for scheduling the vehicle management module and the production management module to work cooperatively; the vehicle management module is connected to the vehicle body identification system and transmits the vehicle information acquired by the vehicle body identification system to the production line management module; the production management module is connected to the production control system, and the vehicle information and the manufacturing parameters are transmitted to the production control system; the production monitoring module is connected to the production monitoring system and transmits the production line state information acquired by the production monitoring system to the production line management module; the rapid communication module provides direct communication connection between the production control system and the production monitoring system and is used for bypassing the production management module to carry out rapid data interaction; the manufacturing parameters and the vehicle information are stored in the database module.
3. The variable-station automobile production line using a flexible interface as claimed in claim 1, wherein the automobile body identification system comprises an RFID reading module; the RFID reading module scans a radio frequency tag installed on the vehicle to be assembled and reads the vehicle information; the vehicle information at least contains a vehicle identification code.
4. The variable-station automobile production line using a flexible interface as claimed in claim 1, wherein the configuration management module comprises a file storage unit and a communication unit; the file storage unit stores the manufacturing parameters corresponding to the vehicle to be assembled; the communication unit is used for connecting the file storage unit to the manufacturing execution system and the production module.
5. The line of claim 1, wherein the production monitoring system comprises a carrier, a vehicle monitoring module, a carrier monitoring module, a travel collection module, and an inductive switch;
the carrier is fixed on the conveying line of the production line, loads the vehicle to be assembled to advance and sequentially passes through the stations; the vehicle monitoring module acquires the arrangement state information of the vehicle to be assembled on the carrier; the carrier monitoring module and the inductive switch are sequentially installed from the inlet of the production line; the carrier monitoring module acquires the in-position state information of the carrier on the crawler; when the carrier and the vehicle to be assembled cross the inductive switch, reporting limit state information; the stroke acquisition module acquires stroke state information of the conveying line; the production line state information reported by the production monitoring system comprises the arrangement state information, the in-position state information, the limit state information and the travel state information.
6. The variable-station automobile production line using the flexible interface as claimed in claim 5, wherein the stroke acquisition module comprises a data acquisition unit, a data calculation unit and a data storage unit; the data acquisition unit is an encoder; the data calculation unit converts the data of the encoder into the travel state information; the data storage unit is connected to the data acquisition unit and the data calculation unit.
7. A method of assembling a vehicle using the variable-position vehicle manufacturing line using a flexible interface of claim 1, comprising the steps of:
firstly, a production line is deployed for the vehicle to be installed;
secondly, initializing a production line according to the vehicle information of the vehicle to be assembled, and determining the number, the position and the length of the stations;
and finally, the vehicle to be assembled enters a production line and starts to be produced.
8. The method of automobile assembly of claim 7, wherein, upon in-line deployment of the vehicle to be installed,
firstly, adjusting the production control system and the production monitoring system; in the production control system, adjusting a production module and connecting the newly added production module to the configuration management module by using the flexible interface without modifying a communication interface between the production control system and the manufacturing execution system; then, configuring the work station, the production control system and the production monitoring system in the manufacturing execution system; in the manufacturing execution system, adjusting the manufacturing parameters corresponding to the vehicle to be installed, so as to specify the number, position and length of the stations included in a production line, and also to specify the production process corresponding to each station;
finally, the redundant equipment which is not used after the configuration is completed is optionally removed from the production control system and the production monitoring system, and is contained in the production control system, and the redundant production modules are removed.
9. The method of automobile assembly of claim 7, wherein, upon initializing a process of a production line:
firstly, starting the production monitoring system to start collecting the production line state information;
secondly, the vehicle to be assembled reaches the entrance of a production line, and the vehicle body identification system reads the vehicle information;
then, the manufacturing execution system selects one group from a plurality of groups of manufacturing parameters stored by the manufacturing execution system based on the vehicle information reported by the vehicle body identification system, configures the number, the position and the length of the stations on a production line, and issues the selected manufacturing parameters to the production control system;
finally, the production control system configures the production process for each of the stations based on the received manufacturing parameters.
10. The method for assembling a motor vehicle according to claim 7, wherein the production process of the vehicle to be assembled comprises the steps of:
step S1, the production monitoring system collects the production line state information and reports the production line state information to the manufacturing execution system;
s2, the manufacturing execution system determines the current station of the vehicle to be assembled by combining the position and the length of the station of the current production line and the position information of the vehicle to be assembled on the conveying line, which is contained in the state information of the production line, and sends the current station of the vehicle to be assembled to the production control system;
s3, the production control system executes the production process corresponding to the current station;
and S4, after the production process of the current station is completed, the manufacturing execution system drives the vehicle to be assembled to advance along the conveying line and returns to the step S1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211285678.XA CN115432086B (en) | 2022-10-20 | 2022-10-20 | Variable-station automobile production line using flexible interface and automobile production method |
| PCT/CN2022/140209 WO2024082424A1 (en) | 2022-10-20 | 2022-12-20 | Variable-station automobile production line using flexible interface and automobile production method |
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| CN202211285678.XA CN115432086B (en) | 2022-10-20 | 2022-10-20 | Variable-station automobile production line using flexible interface and automobile production method |
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| CN115432086B CN115432086B (en) | 2023-07-25 |
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| WO2024082424A1 (en) * | 2022-10-20 | 2024-04-25 | 依柯力信息科技上海股份有限公司 | Variable-station automobile production line using flexible interface and automobile production method |
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| WO2024082424A1 (en) | 2024-04-25 |
| CN115432086B (en) | 2023-07-25 |
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