A body-in-white size measurement control method, control system and device

Abstract

The present application relates to the technical field of vehicle measurement, and more particularly to a body-in-white size measurement control method, a control system and a device, a trolley number is obtained through communication between a robot measurement support and a circulating main line, a measurement support program of a body-in-white to be measured is matched according to a corresponding relationship among the trolley number, a vehicle model number and the measurement support program, the measurement support program matched is called to adjust the robot measurement support, and a visual sensing module is used to measure the size of the body-in-white to be measured, the problem of inaccurate measurement accuracy caused by inconsistent positioning accuracy of different trolleys can be solved, the positioning accuracy requirement of the trolley is reduced, the operation difficulty is reduced, and the overall measurement workstation import cost is reduced, and the robot measurement support can also greatly expand the area of detectable measurement feature holes.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle measurement, and more specifically, to a method, control system, and device for measuring and controlling the dimensions of a vehicle body-in-white. Background Technology

[0002] The welding process of the body-in-white may produce dimensional deviations, which can lead to difficulties in subsequent vehicle assembly and affect the overall appearance and fit of the vehicle. Therefore, it is necessary to perform online dimensional measurement and feedback correction of the body-in-white to ensure the quality of the welding manufacturing of the body-in-white.

[0003] Existing technology discloses a method and control system for measuring the dimensions of a vehicle body-in-white. When the online intelligent control system receives a user's measurement request command, it retrieves a preset vehicle model from the command and obtains the corresponding vehicle body reference point positioning information from a first mapping table. Then, it matches this reference point positioning information with the production schedule number to obtain a program order. When measuring the vehicle body-in-white, the program order calls the measurement bracket program, allowing the measurement workstation to adjust the measurement bracket of the vehicle body-in-white corresponding to the production schedule number, thereby measuring the dimensions of the vehicle body-in-white. This solution automates both production scheduling and vehicle body-in-white measurement, improving the efficiency of measuring the dimensions of different vehicle models. However, this solution requires precise positioning of the vehicle body-in-white at the same inspection station; otherwise, dimensional measurement is impossible, resulting in high operational difficulty and cost. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method and system for measuring and controlling the dimensions of a white body, which reduces the positioning accuracy requirements of the trolley, reduces the difficulty of operation, and reduces the overall cost of implementing the measurement workstation.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A method for measuring and controlling the dimensions of a body-in-white is provided, applied to a body-in-white dimension measurement and control device. The device includes a measurement workstation, a production scheduling system, and a body-in-white dimension measurement and control system. The measurement workstation includes a robot measurement bracket and a main circulation line. The main circulation line includes several cyclic trolleys. The robot measurement bracket is connected to the main circulation line. The robot measurement bracket is equipped with a vision sensing module. The vision sensing module, the robot measurement bracket, and the production scheduling system are respectively connected to the body-in-white dimension measurement and control system. The body-in-white dimension measurement and control system includes a pre-stored body database. The body database contains a first mapping table between trolley numbers and measurement bracket programs, and a second mapping table between vehicle models and measurement bracket programs. The measurement and control method includes the following steps:

[0007] S1: When the body-in-white dimension measurement and control system receives a measurement request instruction, the robot measurement bracket obtains the trolley number of the trolley located at the inspection station through communication with the main circulation line.

[0008] S2: Determine the measurement bracket program from the first mapping relationship table according to the trolley number, and store it as the first target measurement bracket program set; the body-in-white size measurement control system obtains the vehicle model and body-in-white number from the production scheduling system, determines the measurement bracket program from the second mapping relationship table according to the vehicle model, and stores it as the second target measurement bracket program set;

[0009] S3: After receiving the body-in-white number sent by the production scheduling system, match the first target measurement bracket program set with the second target measurement bracket program set to generate a program order;

[0010] S4: According to the program order, the measurement bracket program corresponding to the program order is called from the first target measurement bracket program set, and the measurement bracket program is sent to the robot measurement bracket so that the robot measurement bracket adjusts the robot measurement bracket according to the measurement bracket program, and then the dimensions of the body-in-white to be tested located at the inspection station are measured by the vision sensing module.

[0011] The body-in-white dimension measurement and control method of the present invention obtains the trolley number through communication between the robot measurement bracket and the main circulation line. Based on the correspondence between the trolley number, vehicle model and measurement bracket program, the measurement bracket program of the body-in-white to be measured is matched. By calling the matched measurement bracket program, the robot measurement bracket is adjusted and the dimensions of the body-in-white to be measured are measured using a vision sensing module. This method can solve the problem of inaccurate measurement accuracy caused by inconsistent positioning accuracy of different trolleys, reduce the positioning accuracy requirements of the trolleys, reduce the difficulty of operation, and reduce the overall cost of implementing the measurement workstation. In addition, the use of a robot measurement bracket can also greatly expand the area of ​​detectable and measurable feature holes.

[0012] Preferably, the measurement feature holes of the body-in-white are different on different trolleys. The first mapping table contains the mapping of the measurement bracket program of the same trolley for different body-in-white models, and the second mapping table contains the mapping of the measurement bracket program of different trolleys for the same body-in-white model.

[0013] Preferably, in step S2, the process of determining the measurement bracket program from the first mapping table according to the trolley number and storing it as the first target measurement bracket program set is as follows: determining the measurement feature holes of the body-in-white of different car models on different trolleys, determining the measurement bracket program according to the measurement feature holes, and storing at least one of the measurement bracket programs as the first target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

[0014] Preferably, in step S2, the process of determining the measurement bracket program from the second mapping table according to the vehicle model and storing it as a second target measurement bracket program set is as follows: determining the measurement feature holes of the body-in-white of the vehicle model on different trolleys, determining at least one measurement bracket program according to the measurement feature holes, and storing at least one of the measurement bracket programs as a second target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

[0015] Preferably, the body-in-white number is obtained by the production scheduling system after receiving the user's production demand instruction, which includes an instruction to produce a preset number of vehicles containing at least one preset model within a preset time.

[0016] Preferably, the number of vehicle models is less than or equal to the number of vehicles.

[0017] Preferably, the measurement feature holes of the same model body-in-white are different on different trolleys. The same model body-in-white can be mounted on different trolleys, and the number of measurement feature holes of the same model body-in-white can be increased by trolley circulation.

[0018] Preferably, in step S4, the vehicle model and body-in-white number can be obtained from the production scheduling system through the body size accuracy system, and the body-in-white dimensions can be obtained from the body-in-white size measurement and control system for data statistics and display.

[0019] The present invention also provides a body-in-white dimension measurement and control system, including a memory and a processor, wherein the memory stores a control program, and the control program is executed by the processor for the above-described body-in-white dimension measurement and control method.

[0020] The present invention also provides a body-in-white dimension measurement and control device, including a measurement workstation, a production scheduling system, and the aforementioned body-in-white dimension measurement and control system. The measurement workstation includes a robot measurement bracket and a circulation main line. The circulation main line includes several circulating trolleys. The robot measurement bracket is connected to the circulation main line. The robot measurement bracket is equipped with a vision sensing module. The vision sensing module, the robot measurement bracket, and the production scheduling system are respectively connected to the body-in-white dimension measurement and control system. The production scheduling system is connected to the trolleys. The body-in-white dimension measurement and control system controls the movement of the robot measurement bracket and performs body-in-white dimension measurement through the vision sensing module.

[0021] The aforementioned body-in-white dimension measurement and control device obtains the trolley number through communication between the robot measurement bracket and the main circulation line. Based on the correspondence between the trolley number, vehicle model, and measurement bracket program, it matches the measurement bracket program for the body-in-white to be measured. By calling the matched measurement bracket program, the robot measurement bracket is adjusted, and the dimensions of the body-in-white to be measured are measured using a vision sensing module. This solves the problem of inaccurate measurement accuracy caused by inconsistent positioning accuracy of different trolleys, reduces the positioning accuracy requirements of the trolleys, reduces the difficulty of operation, and reduces the overall cost of implementing the measurement workstation. In addition, the use of a robot measurement bracket can also greatly expand the area that can detect and measure feature holes.

[0022] Compared with the prior art, the beneficial effects of the body-in-white dimension measurement and control method, control system, and device of the present invention are as follows:

[0023] Using a robotic measurement bracket can greatly expand the area where feature holes can be detected and measured; it reduces the positioning accuracy requirements of the trolley, lowers the difficulty of operation, and reduces the overall cost of implementing the measurement workstation; it can detect as many feature holes as possible for the body-in-white size under online measurement conditions, thereby increasing the number of controllable points for the body-in-white size. Attached Figure Description

[0024] Figure 1 This is a flowchart of the body-in-white dimension measurement and control process in an embodiment of the present invention;

[0025] Figure 2 This is a schematic block diagram of the body-in-white dimension measurement and control device in an embodiment of the present invention;

[0026] Figure 3 This is a block diagram illustrating the principle of the body-in-white dimension measurement and control device displaying the dimensions of the body-in-white in an embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Example 1

[0030] A method for measuring and controlling the dimensions of a body-in-white (BYD) vehicle is applied to a BYD dimension measurement and control device. The BYD dimension measurement and control device includes a measurement workstation, a production scheduling system, and a BYD dimension measurement and control system. The measurement workstation includes a robotic measurement bracket and a main circulation line. The main circulation line includes several cyclic trolleys. The robotic measurement bracket is connected to the main circulation line and is equipped with a vision sensing module. The vision sensing module, the robotic measurement bracket, and the production scheduling system are respectively connected to the BYD dimension measurement and control system. The BYD dimension measurement and control system includes a pre-stored vehicle body database. The vehicle body database contains a first mapping table between trolley numbers and measurement bracket programs, and a second mapping table between vehicle models and measurement bracket programs. Figure 1 As shown, the measurement control method includes the following steps:

[0031] S1: When the body-in-white dimension measurement and control system receives a measurement request instruction, the robot measurement bracket obtains the trolley number of the trolley located at the inspection station through communication with the main circulation line.

[0032] S2: Determine the measurement bracket program from the first mapping relationship table based on the trolley number, and store it as the first target measurement bracket program set; The body-in-white dimension measurement control system obtains the vehicle model and body-in-white number from the production scheduling system, determines the measurement bracket program from the second mapping relationship table based on the vehicle model, and stores it as the second target measurement bracket program set;

[0033] S3: After receiving the body-in-white number from the production scheduling system, match the first target measurement bracket program set with the second target measurement bracket program set to generate a program order;

[0034] S4: According to the program order, the measurement bracket program corresponding to the program order is called from the first target measurement bracket program set, and the measurement bracket program is sent to the robot measurement bracket so that the robot measurement bracket adjusts the robot measurement bracket according to the measurement bracket program, and then measures the size of the white body to be tested located at the inspection station through the vision sensing module.

[0035] The aforementioned method for measuring and controlling the dimensions of the body-in-white involves obtaining the trolley number through communication between the robot measuring bracket and the main circulation line. Based on the correspondence between the trolley number, vehicle model, and the measuring bracket program, the measuring bracket program for the body-in-white to be measured is matched. By calling the matched measuring bracket program, the robot measuring bracket is adjusted, and the dimensions of the body-in-white to be measured are measured using a vision sensing module. This method can solve the problem of inaccurate measurement accuracy caused by inconsistent positioning accuracy of different trolleys, reduce the positioning accuracy requirements of the trolleys, reduce the difficulty of operation, and reduce the overall cost of implementing the measurement workstation. Furthermore, the use of a robot measuring bracket can greatly expand the area where the detectable and measurable feature holes can be expanded.

[0036] The measurement feature holes of the body-in-white are different on different trolleys. The first mapping table contains the mapping of the measurement bracket program of the same trolley for different body-in-white models. The second mapping table contains the mapping of the measurement bracket program of different trolleys for the same body-in-white model.

[0037] In step S2, the process of determining the measurement bracket program from the first mapping table according to the trolley number and storing it as the first target measurement bracket program set is as follows: determine the measurement feature holes of the body-in-white of different car models on different trolleys, determine the measurement bracket program according to the measurement feature holes, and store at least one measurement bracket program as the first target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

[0038] The process of determining the measurement bracket program from the second mapping table based on the vehicle model and storing it as the second target measurement bracket program set is as follows: determine the measurement feature holes of the body-in-white of the vehicle model on different trolleys, determine at least one measurement bracket program based on the measurement feature holes, and store at least one measurement bracket program as the second target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

[0039] The body-in-white number is obtained by the production scheduling system after receiving the user's production demand instruction. The production demand instruction includes an instruction to produce a preset number of vehicles containing at least one preset model within a preset time.

[0040] The number of vehicle models is less than or equal to the number of vehicles.

[0041] Example 2

[0042] This embodiment is similar to Embodiment 1, except that the measurement feature holes of the same model body-in-white are different on different trolleys. The same model body-in-white can be mounted on different trolleys, and the number of measurement feature holes of the same model body-in-white can be increased by trolley cycling.

[0043] By using the above method, the same model of body-in-white is inspected multiple times by cyclically using a trolley with interval sampling. Each inspection can cover and inspect different feature holes of the body-in-white. This solves the problem that the number of measurable feature holes of the body-in-white is limited due to the short cycle time of online measurement and inspection. By using different trolleys to sample and inspect different feature holes, and multiple measurement bracket programs to measure in a cyclic manner, the number of measurable feature holes can be greatly increased, thereby increasing the number of controllable points in the body-in-white dimensions.

[0044] As needed, the same body-in-white can be mounted on different trolleys one after another, and the number of dimensional inspections of the measurement feature holes of the same body-in-white can be increased by circulating the trolleys.

[0045] Example 3

[0046] This embodiment is similar to Embodiment 1 or Embodiment 2, except that in step S4, as follows: Figure 3 As shown, the vehicle model and body-in-white number can also be obtained from the production scheduling system through the body size accuracy system, and the body-in-white dimensions can be obtained from the body-in-white size measurement and control system for data statistics and display.

[0047] Example 4

[0048] A body-in-white dimension measurement and control system includes a memory and a processor. The memory stores a control program, which, when executed by the processor, is used for the body-in-white dimension measurement and control method of Embodiment 1, Embodiment 2, or Embodiment 3.

[0049] Example 5

[0050] A white body size measurement and control device, such as Figure 2As shown, the system includes a measurement workstation, a production scheduling system, and a body-in-white dimension measurement and control system according to Embodiment 4. The measurement workstation includes a robot measurement bracket and a main circulation line. The main circulation line includes several circulating trolleys. The robot measurement bracket is connected to the main circulation line. The robot measurement bracket is equipped with a vision sensing module. The vision sensing module, the robot measurement bracket, and the production scheduling system are respectively connected to the body-in-white dimension measurement and control system. The production scheduling system is connected to the trolleys. The body-in-white dimension measurement and control system controls the movement of the robot measurement bracket and performs body-in-white dimension measurement through the vision sensing module.

[0051] The aforementioned body-in-white dimension measurement and control device controls the operation of the production scheduling system's main production line. It can control the trolley to circulate and obtain the trolley number through communication with the main production line via a robotic measuring bracket. Based on the correspondence between the trolley number, vehicle model, and the measuring bracket program, it matches the measuring bracket program for the body-in-white to be measured. By calling the matched measuring bracket program, the robotic measuring bracket is adjusted, and the dimensions of the body-in-white to be measured are measured using a vision sensing module. This solves the problem of inaccurate measurement accuracy caused by inconsistent positioning accuracy of different trolleys, reduces the positioning accuracy requirements of the trolleys, reduces the difficulty of operation, and reduces the overall cost of implementing the measurement workstation. In addition, the use of a robotic measuring bracket can also greatly expand the area that can detect and measure feature holes.

[0052] The measurement feature holes of the same model body-in-white are different on different trolleys. By mounting the same model body-in-white on different trolleys and cycling the trolleys, the number of measurement feature holes of the same model body-in-white can be increased. This can solve the problem that the number of measurable feature holes of the body-in-white is limited due to the short cycle time of online measurement and inspection. By sampling and inspecting different measurement feature holes on different trolleys and cyclically measuring with multiple measurement brackets, the number of measurable feature holes can be greatly increased, thereby increasing the number of controllable points of the body-in-white dimensions.

[0053] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for measuring and controlling the dimensions of a body-in-white, characterized in that, A body-in-white dimension measurement and control device is applied, comprising a measurement workstation, a production scheduling system, and a body-in-white dimension measurement and control system. The measurement workstation includes a robot measurement bracket and a main circulation line. The main circulation line includes several circulating trolleys. The robot measurement bracket is connected to the main circulation line and is equipped with a vision sensing module. The vision sensing module, the robot measurement bracket, and the production scheduling system are respectively connected to the body-in-white dimension measurement and control system. The body-in-white dimension measurement and control system includes a pre-stored body database. The body database contains a first mapping table between trolley numbers and measurement bracket programs, and a second mapping table between vehicle models and measurement bracket programs. The measurement feature holes of the body-in-white differ on different trolleys. The first mapping table contains mappings of measurement bracket programs for different vehicle models on the same trolley, and the second mapping table contains mappings of measurement bracket programs for the same vehicle model on different trolleys. The measurement control method includes the following steps: S1: When the body-in-white dimension measurement and control system receives a measurement request instruction, the robot measurement bracket obtains the trolley number of the trolley located at the inspection station through communication with the main circulation line. S2: Determine the measurement bracket program from the first mapping relationship table according to the trolley number, and store it as the first target measurement bracket program set; the body-in-white size measurement control system obtains the vehicle model and body-in-white number from the production scheduling system, determines the measurement bracket program from the second mapping relationship table according to the vehicle model, and stores it as the second target measurement bracket program set; S3: After receiving the body-in-white number sent by the production scheduling system, match the first target measurement bracket program set with the second target measurement bracket program set to generate a program order; S4: According to the program order, the measurement bracket program corresponding to the program order is called from the first target measurement bracket program set, and the measurement bracket program is sent to the robot measurement bracket so that the robot measurement bracket adjusts the robot measurement bracket according to the measurement bracket program, and then the dimensions of the body-in-white to be tested located at the inspection station are measured by the vision sensing module.

2. The method for measuring and controlling the dimensions of a body-in-white according to claim 1, characterized in that, In step S2, the process of determining the measurement bracket program from the first mapping table according to the trolley number and storing it as the first target measurement bracket program set is as follows: determining the measurement feature holes of the body-in-white of different car models on different trolleys, determining the measurement bracket program according to the measurement feature holes, and storing at least one of the measurement bracket programs as the first target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

3. The method for measuring and controlling the dimensions of a body-in-white according to claim 1, characterized in that, In step S2, the process of determining the measurement bracket program from the second mapping table according to the vehicle model and storing it as the second target measurement bracket program set is as follows: determine the measurement feature holes of the body-in-white of the vehicle model on different trolleys, determine at least one measurement bracket program according to the measurement feature holes, and store at least one measurement bracket program as the second target measurement bracket program set; wherein, each measurement feature hole corresponds to one measurement bracket program.

4. The method for measuring and controlling the dimensions of a body-in-white according to claim 1, characterized in that, The body-in-white number is obtained by the production scheduling system after receiving the user's production demand instruction. The production demand instruction includes an instruction to produce a preset number of vehicles containing at least one preset model within a preset time.

5. The method for measuring and controlling the dimensions of a body-in-white according to claim 1, characterized in that, The number of vehicle models is less than or equal to the number of vehicles.

6. The method for measuring and controlling the dimensions of a body-in-white according to claim 1, characterized in that, The measurement feature holes of the same model body-in-white are different on different trolleys. The same model body-in-white can be mounted on different trolleys and the number of measurement feature holes of the same model body-in-white can be increased by trolley circulation.

7. The method for measuring and controlling the dimensions of a body-in-white according to any one of claims 1 to 6, characterized in that, In step S4, the vehicle model and body-in-white number can be obtained from the production scheduling system through the body size accuracy system, and the body-in-white dimensions can be obtained from the body-in-white size measurement and control system for data statistics and display.

8. A white body size measurement and control system, characterized in that, It includes a memory and a processor, wherein the memory stores a control program, which, when executed by the processor, is used to implement the body-in-white dimension measurement control method according to any one of claims 1-6.

9. A white body size measurement and control device, characterized in that, The system includes a measurement workstation, a production scheduling system, and a body-in-white dimension measurement and control system as described in claim 8. The measurement workstation includes a robot measurement bracket and a main circulation line. The main circulation line includes several circulating trolleys. The robot measurement bracket is connected to the main circulation line. The robot measurement bracket is equipped with a vision sensing module. The vision sensing module, the robot measurement bracket, and the production scheduling system are respectively connected to the body-in-white dimension measurement and control system. The production scheduling system is connected to the trolleys. The body-in-white dimension measurement and control system controls the movement of the robot measurement bracket and performs body-in-white dimension measurement through the vision sensing module.

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