Manual assembly process control management system and method

Abstract

The invention relates to the field of assembly, in particular to a manual assembly process control management system and method. Comprising a management and control platform and n assembly subsystems, the assembly subsystem comprises a multi-degree-of-freedom operation table, a torque controller, a digital dispensing machine, an integrated computer and a code scanning gun; the management and control platform is deployed on the integrated computer; the management and control platform communicates with the multi-degree-of-freedom operation table and the torque controller through an http interface; the digital dispensing machine and the code scanning gun are connected with the integrated computer through serial communication; the multi-degree-of-freedom operation table and the torque controller are in communication connection through a local area network.

Description

Technical Field

[0001] The present invention relates to the field of assembly, and in particular to a manual assembly process control management system and method. Background Art

[0002] Aviation and aerospace electromechanical products, including sensors and motors, have complex and compact structures, small volumes, narrow assembly spaces, and many assembly elements. It is difficult, costly, and inefficient to achieve fully automatic assembly. Therefore, manual assembly and semi-automatic assembly are still the main methods used at home and abroad.

[0003] Generally, electromechanical products have multiple assembly operation angles, which need to be completed separately according to the steps, and each work task surface should have a qualified assembly criterion. If the entire process is manually operated, it will need to be highly dependent on uncontrollable factors such as the operator's skills, sense of responsibility, and status. As products enter the mass production and delivery stage, manual assembly will inevitably have errors, omissions, inadequacies, and poor assembly consistency, affecting product quality and even system safety during use. Moreover, after quality problems occur, since the process data is almost zero, it is difficult to trace back, which greatly hinders the scope of fault location and troubleshooting. Summary of the invention

[0004] In view of the above technical problems, a manual assembly process control management system and method are designed to standardize the manual assembly process. The switching conditions of the work surface are used to restrict and force the operator to complete the assembly elements of each operation surface according to the preset process. The switching conditions of the work surface are the preset assembly qualification criteria.

[0005] Technical solution:

[0006] In a first aspect, a manual assembly process control management system is provided, comprising:

[0007] Control platform, n assembly subsystems;

[0008] The assembly subsystem includes: a multi-degree-of-freedom operating table, a torque controller, a digital glue dispenser, an integrated computer and a barcode scanner; the control platform is deployed on the integrated computer; the control platform communicates with the multi-degree-of-freedom operating table and the torque controller through the http interface; the digital glue dispenser and the barcode scanner are connected to the integrated computer through serial port communication; the multi-degree-of-freedom operating table and the torque controller are connected through a local area network;

[0009] As the core of the system, the control platform is responsible for scheduling and controlling all hardware equipment, including: process configuration module, acquisition control module, and material acquisition management module;

[0010] The process configuration module flexibly configures the equipment, materials, tightening torque, number of dispensing times, and multi-degree-of-freedom operating table positions in the assembly process to meet the assembly requirements of different product models; the acquisition control module collects signal data from the hardware in the assembly subsystem and interlocks the control and process in the assembly process, and performs control execution based on the configured basic data; the material acquisition management module manages the materials to be assembled and assembled materials in different assembly subsystems, generates QR codes based on the type, quantity, and specifications of the materials, completes the acquisition and storage of materials before assembly through a barcode scanner, monitors the materials in the assembly process through the torque controller assembly process data, and reports errors when problems occur.

[0011] Furthermore, the management and control platform adopts a B / S software architecture. The front-end operation interface requests the back-end interface through the http Restful interface. The device data is pushed to the front-end through WebSocket, and the front-end operation interface is accessed through the URL. All API interfaces of the back-end service are registered to the gateway to take effect. System management functions are implemented through various services. Commonly used and unchanging data is stored in Redis in a key-value manner, and persistent layer data is stored in the MySQL database.

[0012] Furthermore, the multi-degree-of-freedom operating platform includes:

[0013] Support base, x-axis motor, x-axis bearing, proximity switch, gear system, z-axis bearing, z-axis limit, z-axis motor, button box, control box, upper control system; the gear system includes driving gear 2005 and driven gear;

[0014] The upper control system drives the x-axis motor and the z-axis motor to rotate at the same time, which can realize xyz multi-directional movement to meet the assembly position requirements; the output shaft of the x-axis motor is connected to the arm housing of the operating table through the x-axis bearing; the x-axis motor is fixed to the back plate of the support base by screws, and the gear system is compactly installed in the arm housing, and the z-axis bearing is installed inside the gear system, and the product is installed on the tooling of the z-axis bearing.

[0015] Furthermore, the multi-degree-of-freedom operating platform also includes:

[0016] Non-metallic pins for tooling installed in the z-axis bearing;

[0017] or,

[0018] The non-metallic pin installed on the z-axis bearing and the arc surface installed on the support arm housing protect the limit.

[0019] Furthermore, the control platform sends parameters and control logic to the upper system of the torque controller according to the process configuration data requirements of a certain step in the assembly process. The torque controller collects data and curves during the step, and transmits the data and curves back to the control platform through the upper system to realize the control of the step in the assembly process.

[0020] Furthermore, the digital glue dispensing machine includes: a glue dispensing machine equipment host, a glue dispensing pen, and an I / O to 485 module;

[0021] The output end of the glue dispensing machine is connected to the control end of the glue dispensing pen; the motor speed controls the glue volume, and the glue dispensing pen switch controls the glue output. The control platform records the number of glue dispensing times by collecting the I / O signal of the glue dispensing pen switch.

[0022] The acquisition method is to connect the power cord and acquisition line of the dispensing pen switch to the I / O to 485 module, and connect the 485 end of the I / O to 485 module to the integrated computer; the control platform is specifically used to collect the I / O signal, and then make cumulative judgments based on the process configuration data requirements of the dispensing step, and to accurately calculate the dispensing amount and accumulate the number of dispensing times by recording the motor speed and time in the main unit of the dispensing machine; the calculation formula for the dispensing amount is:

[0023] Q=k*V*A*t

[0024] Where, Q is the amount of glue dispensed per time / mm 3 ; k—calibration coefficient; A—TT tube cross section / mm; V—motor speed / mm / s; t—motor rotation time / s.

[0025] Furthermore, before executing a work step, the management and control platform collects the QR code through a barcode scanner, parses the QR code, and queries the type, quantity, and specifications of the material in the MySQL database to manage the materials in the assembly process, ensuring the completeness of materials in different processes and the accuracy of materials in the assembly process.

[0026] In a second aspect, a manual assembly process control management method is provided, using any system described in the first aspect, the method comprising:

[0027] Step 1: Start the control platform, parse the data configured in the process configuration module, and find the assembly subsystem configured in the process configuration module, the equipment model of the system, the equipment communication method, the control torque value corresponding to the torque controller, the operating surface setting position of the multi-degree-of-freedom operating table during the operation process, the dispensing time setting and the number of dispensing times of the digital dispensing machine through the information in the database table, and mark the corresponding work step sequence of the equipment.

[0028] Step 2: After the control platform analyzes the process configuration module data, it analyzes and obtains the assembly subsystem configuration equipment torque controller, multi-degree-of-freedom operating table, digital dispensing machine, barcode scanner and integrated computer. At the same time, the equipment torque controller communication protocol is TCP / IP, the multi-degree-of-freedom operating table communication protocol is TCP / IP, the digital dispensing machine communication protocol is 485 serial port, and the barcode scanner communication protocol is 232 serial port. After the work step analysis is completed, the acquisition control module issues instructions according to the work step logic, and each device returns data to the control platform according to the corresponding interface content;

[0029] Step 3: The control platform analyzes the returned data to determine whether there is an error in the operation of this step.

[0030] Step 4: After the assembly is completed, the collected torque value, tightening times, dispensing amount, dispensing times, and corresponding turntable position records are generated into a report.

[0031] Furthermore, the control platform analyzes the returned data to determine whether there is an error in the operation of the process step, including:

[0032] For the material calibration step, the acquisition control module analyzes the data of the material calibration step, receives the material data collected by the barcode scanner, returns the material code data through the 232 serial port, and compares the material information configured by the material acquisition management module with the returned data to ensure the completeness of the materials to be loaded;

[0033] For the alignment step, the angle setting signal of the multi-degree-of-freedom operating table in the alignment step is sent to the upper control system through the http interface. After the upper control system automatically executes the command to rotate the x-axis motor to the zero position, the proximity switch is triggered, and the upper control system transmits the in-position signal back to the control platform through the http interface;

[0034] For the dispensing step, the acquisition control module collects the cumulative number of dispensing signals in the tightening step through the 232 serial port, calculates the dispensing amount through the calculation formula of the dispensing amount, and collects and determines whether the cumulative number and dispensing amount have reached the set value;

[0035] For the tightening process, after collecting and judging the cumulative number of times and the amount of glue dispensed to reach the set value, the tightening command is sent to the torque controller, and the torque controller starts tightening collection. When the tightening torque reaches the set value, the qualified signal and torque value are sent back to the control platform. When the tightening torque value and the number of tightening times reach the set value, the control platform sends a command to the multi-degree-of-freedom operating table to turn to the set position.

[0036] Beneficial effects:

[0037] This system can collect and judge key process parameters for difficult-to-control manual operation processes, constrain assembly sequence and assembly integrity, and expand its component equipment according to the diversity of assembly elements, so that each element is constrained as required, ultimately achieving the purpose of standardized assembly consistency and improving assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the hardware layout of a manual assembly process control management system is provided for an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the hardware connection relationship provided in an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the management and control platform architecture provided by an embodiment of the present invention;

[0041] Figure 4a A schematic diagram of the structure of a first multi-freedom operating table provided in an embodiment of the present invention;

[0042] Figure 4b A schematic diagram of the structure of a second multi-freedom operating table provided in an embodiment of the present invention;

[0043] Figure 4c A schematic diagram of the structure of a third multi-freedom operating table provided in an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of the control logic of the management and control platform provided in an embodiment of the present invention;

[0045] Figure 6 A schematic diagram of the operation flow provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The application provides a manual assembly process control management system including:

[0047] Control platform, configuration software, multi-degree-of-freedom operating table, torque controller, digital dispensing machine;

[0048] Wherein, the control platform is respectively connected to the multi-degree-of-freedom operating table, the torque controller, and the digital dispensing machine through a local area network;

[0049] The control platform is used to make judgments in the target assembly project according to the received parameters of the torque controller and the digital dispensing machine. If the parameters are qualified, the multi-degree-of-freedom operating table is triggered to move to the next operating surface. If the parameters are unqualified, an error prompt is given on the computer interface.

[0050] The configuration software pre-sets the motion trajectory according to the assembly process of different assembly targets, pre-sets the assembly features of each operation surface, and sets the qualified judgment criteria. Different targets and different configurations can be selected in the interface for corresponding use;

[0051] The multi-degree-of-freedom operating platform is a controllable motion clamping device that can provide the target with clockwise flipping, counterclockwise flipping and rotation in the horizontal plane. It is composed of multiple motors and control circuits. The multi-degree-of-freedom operating platform is connected to the control platform in claim 1;

[0052] The multi-degree-of-freedom operating table and the target fixed clamping interface adopt a movable clamping type, which can be quickly installed and replaced, and can also be adjusted and designed according to different target structural characteristics;

[0053] The manual assembly process control management system adopted in the embodiment of the present invention can significantly improve the efficiency, control the assembly quality, and prevent wrong or missed assembly in the manual assembly process of products with small volume, complex structure, and multiple assembly elements.

[0054] When developing a new system, firstly, for each assembly target, the assembly process is preset and solidified in the configuration software, and the assembly elements and qualified criteria of each operating surface are completely preset, and then the configuration software is embedded into the control system. During assembly, the control system first drives the multi-degree-of-freedom operating table to the first assembly work surface according to the configuration software process. At this time, the control platform begins to collect and receive data sent by the torque controller and digital glue dispenser and displays it on the computer screen in real time. When the operator uses the digital glue dispenser to assemble the components of the operating surface with the correct amount of glue and the number of times of glue, the control platform will confirm and send a command to the multi-degree-of-freedom operating table to move or rotate to the next work surface. After receiving the command, the multi-degree-of-freedom operating table drives the internal rotation and linear motor to move to the next work surface of the assembly target. At this time, the control platform starts the next round of data collection and reception, and so on, and finally completes the assembly process of the product.

[0055] The embodiment of the present invention provides a manual assembly process control management system, such as Figure 1-2 As shown, it includes: a control platform 10, a first multi-degree-of-freedom operating table 20, a second multi-degree-of-freedom operating table 21, a third multi-degree-of-freedom operating table 22, a first torque controller 30, a second torque controller 31, a third torque controller 32, a first digital glue dispenser 40, a second digital glue dispenser 41, a third digital glue dispenser 42, a first integrated computer 50, a second integrated computer 51, a third integrated computer 52, a first barcode scanner 60, a second barcode scanner 61, and a third barcode scanner 62; except for the glue dispenser and the barcode scanner, the rest are connected to the communication through the local area network, and the glue dispenser and the barcode scanner are connected to the integrated computer through serial port communication. The hardware layout is as follows Figure 1As shown, the hardware connection relationship is as follows Figure 2 shown.

[0056] like Figure 3 As shown, the control platform 10 is the center of the system, responsible for scheduling and controlling all hardware devices, and integrates the process configuration module 11, the acquisition control module 12, and the material acquisition management module 13. Figure 3 As shown. B / S software architecture is adopted. The front-end operation interface requests the back-end interface through the http Restful interface. The device data is pushed to the front-end through WebSocket. The interface is accessed through the URL. All API interfaces of the back-end service must be registered to the gateway to take effect. System management functions are implemented through various services. Commonly used and unchanging data is stored in Redis in the form of key-value, and the persistent layer data is stored in the MySQL database. Among them, the process configuration module 11 can be flexibly configured for the equipment, materials, tightening torque, number of dispensing times, and operating table position in the assembly process, so as to meet the assembly requirements of different types of products; the acquisition control module 12 mainly performs signal data acquisition on the hardware in the system and control and process interlocking in the assembly process, and controls and executes based on the basic data configured in the process configuration module 11; the material acquisition management module 13 completes the management of materials to be assembled and assembled materials at different workstations. The module can generate a QR code according to the type, quantity, and specification of the material, and completes the acquisition of materials before assembly through the first barcode scanner 60, the second barcode scanner 61, and the third barcode scanner 62, and monitors the materials in the assembly process through the assembly process data of the first torque controller 30, the second torque controller 31, and the third torque controller 32.

[0057] like Figure 4aAs shown, the first multi-degree-of-freedom operating table 20 is mainly composed of a support base 2001, an x-direction motor 2002, an x-direction bearing 2003, a proximity switch 2004, a driving gear 2005, a driven gear 2006, a z-direction bearing 2007, a z-direction limit 2008, a z-direction motor 2009, a button box 2010, a control box 2011, and an upper control system 2012. By driving the x-direction motor 2002 and the z-direction motor 2009 simultaneously, xyz multi-directional motion can be achieved to meet the assembly position requirements. The operating table can achieve precise position and angle control, and integrates high-performance motors (x-direction motor 2002, z-direction motor 2009) and gear systems (driving gear 2005, driven gear 2006). The x-direction motor 2002 is fixed to the back plate of the support base 2001 by screws, and the gear system is compactly installed in the arm housing of the operating table. The integrated design not only saves space, but also improves the mechanical strength and reliability of the overall system. By cooperating with ultra-thin gears (driving gear 2005, driven gear 2006) and ultra-thin bearings (Z-bearing 2007), a precise gear transmission system is realized, which provides a mechanical basis for high torque and precise angle control.

[0058] like Figure 4b As shown, the structure of the second multi-DOF operating platform 21 is similar to that of the first multi-DOF operating platform 20, but it is different from the first multi-DOF operating platform 20 in that a non-metallic pin 2111 is added for positioning, and the shape limit change of the product during the assembly process is satisfied. Figure 4c As shown, the structure of the third multi-degree-of-freedom operating table 22 is similar to that of the second multi-degree-of-freedom operating table 21. Unlike the first multi-degree-of-freedom operating table 20, it also adds a non-metallic pin 2211 for positioning, and adds a circular arc surface protection limit 2212, which can meet the limit requirements of different products and can rotate along the z-axis of the motor 2209. The structures of the three operating tables are modularized during the design process, such as motors, transmission devices, support bases and positioning modules. This modular design provides convenience for product compatibility, use and maintainability. The x-axis motors and z-axis motors of the three operating tables are universal, and only need to be replaced with positioning modules to achieve hardware interoperability. At the same time, the operating table is equipped with an upper control system 212 and a manual operation button 211, which can configure the button process according to the operating habits. Different buttons can control the speed of different axes or the same axis, and the data of the process configuration module 11 issued by the control platform can also be issued to a certain button. The command reception and return with the control platform 10 during the operation process are realized through the http interface.

[0059] The first torque controller 30, the second torque controller 31, and the third torque controller 32 are mainly composed of a reaction arm, a tightening gun, a controller, and a host system. The first torque controller 30, the second torque controller 31, and the third torque controller 32 realize the reception and return of instructions from the control platform 10 during the operation process through the http interface. According to the data requirements of the process configuration module 11 in the control platform 10, the parameters and control logic are sent to the host system through the acquisition control module 12, and the controller collects the tightening process data and curves, and returns the tightening process data to the control platform 10 through the host system, so as to realize the control of the tightening process in the assembly process.

[0060] The first digital glue dispenser 40, the second digital glue dispenser 41, and the third digital glue dispenser 42 mainly include a glue dispenser equipment host, a glue dispenser pen, and an I / O to 485 module. The glue amount is controlled by the motor speed, the glue output is controlled by the glue dispenser pen switch, and the glue dispensing times are recorded by collecting the I / O signal of the glue dispenser pen switch. The collection method is to connect the power cord and the collection line of the glue dispenser pen switch to the I / O to 485 module, and connect the 485 end to the first integrated computer 50, the second integrated computer 51, and the third integrated computer 52 respectively. After the I / O signal is collected by the collection control module 12 of the management and control platform 10, it is accumulated and judged through the data requirements of the process configuration module 11, and the motor speed and time are recorded to realize the accurate calculation of the glue dispensing amount and the cumulative record of the glue dispensing times, as shown in the following formula.

[0061] Q=k*V*A*t

[0062] Q—single dispensing volume / mm 3 ;

[0063] k—calibration coefficient;

[0064] A—TT tube cross section / mm;

[0065] V—motor speed / mm / s

[0066] t—motor rotation time / s.

[0067] The first barcode scanner 60, the second barcode scanner 61, and the third barcode scanner 62 are connected to the first integrated computer 50, the second integrated computer 51, and the third integrated computer 52 through the 232 serial port. The acquisition control module 12 of the management and control platform 10 collects barcode scanner signals, and analyzes the collected data through the material acquisition management module 13 to realize the management of materials in the assembly process, ensure the completeness of materials in different processes and the accuracy of materials in the assembly process.

[0068] like Figure 5 As shown, the specific implementation steps of the system are as follows:

[0069] Step 1: The management and control platform 10 is started, and the data configured in the process configuration module 11 is parsed. The equipment model, equipment communication mode, corresponding control torque values ​​of the first torque controller 30, the second torque controller 31, and the third torque controller 32 of the workstation 1 configured in the process configuration module 11 are found through the information in the database table, the operating surface setting positions of the first multi-degree-of-freedom operating table 20, the second multi-degree-of-freedom operating table 21, and the third multi-degree-of-freedom operating table 22 during the corresponding operation process, the dispensing time setting and the dispensing number setting of the first digital dispensing machine 40, the second digital dispensing machine 41, and the third digital dispensing machine 42, and the corresponding process step sequence of the equipment is marked.

[0070] Step 2: Take the first torque controller 30, the first multi-degree-of-freedom operating table 20, the first digital glue dispenser 40, and the first barcode scanner 60 as an example. After the control platform 10 analyzes the data of the process configuration module 11, it is analyzed that the station 1 is configured with the first torque controller 30, the first multi-degree-of-freedom operating table 20, the first digital glue dispenser 40, the first barcode scanner 60, and the first integrated computer 50. At the same time, the communication protocol of the first torque controller 30 is TCP / IP, the communication protocol of the first multi-degree-of-freedom operating table 20 is TCP / IP, the communication protocol of the first digital glue dispenser 40 is 485 serial port, and the communication protocol of the first barcode scanner 60 is 232 serial port. At the same time, step 1 is for the first barcode scanner 60 to scan the material code; step 2 is for the first multi-degree-of-freedom operating table 20 to be at the initial position zero; step 3 is for the first digital dispensing machine 40 to dispense glue 5 times, and the dispensing time is 3s; step 4 is for the first torque controller 30 to control the torque to 0.4N·m, and the number of tightening is 5 times; step 5 is for the first multi-degree-of-freedom operating table 20 to be at 180°; step 6 is for the first digital dispensing machine 40 to dispense glue 4 times, and the dispensing time is 3s; step 7 is for the first torque controller 30 to control the torque to 0.25N·m, and the number of tightening is 4 times; step 8 is for the first multi-degree-of-freedom operating table 20 to return to the zero position. After the step analysis is completed, the acquisition control module 12 issues instructions according to the step logic, and each device transmits data back to the control platform 10 according to the corresponding interface content.

[0071] Step 3: The control logic of the management and control platform 10 is as follows Figure 5As shown, take the first torque controller 30, the first multi-degree-of-freedom operating table 20, the first digital dispensing machine 40, and the first barcode scanner 60 as examples. The data of step 1 in step 2 is parsed, and the control platform 10 receives the material data collected by the first barcode scanner 60 through the acquisition control module 12, and returns the material code data through the 232 serial port. By parsing the material information configured by the material acquisition management module 13 and comparing it with the returned data, the completeness of the materials to be loaded is ensured. Next, the angle setting signal of the first multi-degree-of-freedom operating table 20 in step 2 in step 2 is sent to the upper control system 3012 through the http interface. After the upper control system automatically executes the instruction to rotate the x-axis motor 302 to the zero position, the proximity switch 304 is triggered, and the upper control system 3012 returns the arrival signal to the control platform 10 through the http interface. Next, the acquisition control module 12 collects the cumulative number of dispensing signals in step 3 in step 2 through the 232 serial port, and converts and calculates the dispensing amount through the above calculation formula. When the cumulative number of collection and judgment and the dispensing amount reach the set value, a tightening instruction is sent to the first torque controller 30. The first torque controller 30 starts tightening acquisition. When the tightening torque reaches the set value, the qualified signal and torque value are returned to the control platform 10. When the tightening torque value and the number of tightening times reach the set values, the control platform 10 sends an instruction to the first multi-degree-of-freedom operating table 20 to rotate to 180°. After receiving the instruction, the upper control system 3012 controls the x-axis motor 302 to rotate to 180°, and sends the arrival signal back to the control platform 10 after it is in place. The acquisition control module 12 collects the cumulative number of dispensing signals in step 6 in step 2, and converts and calculates the dispensing amount through the above calculation formula. When the accumulated number of collection and judgment and the dispensing amount reach the set value, a tightening instruction is issued to the first torque controller 30. The first torque controller 30 starts tightening collection. When the tightening torque reaches the set value, the qualified signal and torque value are sent back to the control platform 10. The control platform 10 will send a zero position instruction back to the upper control system 3012, and the system will automatically return to zero.

[0072] Step 4: After the assembly is completed, the collected torque value, tightening times, dispensing amount, dispensing times, and corresponding turntable position records are generated into a report.

[0073] This system can ensure accurate control and efficient management of the manual assembly process. It comprehensively considers the system composition, operation process and advanced technology implementation methods, and especially emphasizes the action interlocking function to ensure the standardization and efficiency of the assembly process. It greatly enhances the safety of operation and ensures that each assembly step is performed under the correct conditions, thereby ensuring the consistency and reliability of product assembly quality.

[0074] The operation process of the system is as follows. Taking the workstation configuration of the first torque controller 30, the first multi-degree-of-freedom operating table 20, the first digital dispensing machine 40, and the first barcode scanner 60 as an example, the flow chart is as follows Figure 6:

[0075] (1) Manually open the system WEB interface and log in.

[0076] (2) Click on process configuration, configure the equipment required for the assembly process of the workstation in the interface, configure the equipment according to the process sequence, and configure the corresponding process parameters under the corresponding equipment. For example, the number and time of dispensing of digital dispensing machines, the tightening torque and number of torque controllers, and the set assembly position of multi-free operation tables. The process configuration content can be saved and sent. When you open it again, you can modify it under this set of parameters.

[0077] (3) According to the configuration process, the interface prompts manual operation. After the multi-degree-of-freedom operating table is automatically in place, the product is placed on the multi-degree-of-freedom operating table, and the z-axis limit rotation is used to fix the product. The interface prompts manual dispensing and updates the dispensing amount and number of times in real time;

[0078] (4) After dispensing is completed, the interface prompts manual tightening operation and updates the tightening torque and tightening times in real time;

[0079] (5) After the tightening operation is completed, the multi-degree-of-freedom operating table automatically rotates 180°, and the interface prompts manual dispensing and updates the dispensing amount and number of times in real time;

[0080] (6) After dispensing is completed, the interface prompts manual tightening operation and updates the tightening torque and tightening times in real time;

[0081] (7) After tightening, the multi-degree-of-freedom operating table automatically returns to zero position and the assembly is completed;

[0082] (8) The system automatically generates and saves reports.

Claims

1. A manual assembly process control management system, characterized in that: include: Control platform, n assembly subsystems; The assembly subsystem includes: a multi-degree-of-freedom operating table, a torque controller, a digital glue dispenser, an integrated computer and a barcode scanner; the control platform is deployed on the integrated computer; the control platform communicates with the multi-degree-of-freedom operating table and the torque controller through the http interface; the digital glue dispenser and the barcode scanner are connected to the integrated computer through serial port communication; the multi-degree-of-freedom operating table and the torque controller are connected through a local area network; As the core of the system, the control platform is responsible for scheduling and controlling all hardware equipment, including: process configuration module, acquisition control module, and material acquisition management module; The process configuration module flexibly configures the equipment, materials, tightening torque, number of dispensing times, and multi-degree-of-freedom operating table positions in the assembly process to meet the assembly requirements of different product models; the acquisition control module collects signal data from the hardware in the assembly subsystem and interlocks the control and process in the assembly process, and performs control execution based on the configured basic data; the material acquisition management module manages the materials to be assembled and assembled materials in different assembly subsystems, generates QR codes based on the type, quantity, and specifications of the materials, completes the acquisition and storage of materials before assembly through a barcode scanner, monitors the materials in the assembly process through the torque controller assembly process data, and reports errors when problems occur.

2. The system according to claim 1, characterized in that The management and control platform adopts B / S software architecture. The front-end operation interface requests the back-end interface through the http Restful interface. The device data is pushed to the front-end through WebSocket. The front-end operation interface is accessed through the URL. All API interfaces of the back-end service are registered to the gateway to take effect. System management functions are implemented through various services. Commonly used and unchanging data is stored in Redis in a key-value manner, and the persistence layer data is stored in the MySQL database.

3. The system according to claim 2, characterized in that The multi-degree-of-freedom operating table includes: Support base, x-axis motor, x-axis bearing, proximity switch, gear system, z-axis bearing, z-axis limit, z-axis motor, button box, control box, upper control system; the gear system includes driving gear 2005 and driven gear; The upper control system drives the x-axis motor and the z-axis motor to rotate at the same time, which can realize xyz multi-directional movement to meet the assembly position requirements; the output shaft of the x-axis motor is connected to the arm housing of the operating table through the x-axis bearing; the x-axis motor is fixed to the back plate of the support base by screws, and the gear system is compactly installed in the arm housing, and the z-axis bearing is installed inside the gear system, and the product is installed on the tooling of the z-axis bearing.

4. The system according to claim 3, characterized in that The multi-degree-of-freedom operating table also includes: Non-metallic pins for tooling installed in the z-axis bearing; or, The non-metallic pin installed on the z-axis bearing and the arc surface installed on the support arm housing protect the limit.

5. The system according to claim 4, characterized in that The control platform sends parameters and control logic to the upper system of the torque controller according to the process configuration data requirements of a certain step in the assembly process. The torque controller collects data and curves during the step, and transmits the data and curves back to the control platform through the upper system to realize the control of the step in the assembly process.

6. The system according to claim 5, characterized in that The digital dispensing machine includes: dispensing machine host, dispensing pen, and I / O to 485 module; The output end of the glue dispensing machine is connected to the control end of the glue dispensing pen; the motor speed controls the glue volume, and the glue dispensing pen switch controls the glue output. The control platform records the number of glue dispensing times by collecting the I / O signal of the glue dispensing pen switch. The acquisition method is to connect the power cord and acquisition line of the dispensing pen switch to the I / O to 485 module, and connect the 485 end of the I / O to 485 module to the integrated computer; the control platform is specifically used to collect the I / O signal, and then make cumulative judgments based on the process configuration data requirements of the dispensing step, and to accurately calculate the dispensing amount and accumulate the number of dispensing times by recording the motor speed and time in the main unit of the dispensing machine; the calculation formula for the dispensing amount is: Q=k*V*A*t Where, Q is the amount of glue dispensed per time / mm 3 ; k—calibration coefficient; A—TT tube cross section / mm; V—motor speed / mm / s; t—motor rotation time / s.

7. The system according to claim 6, characterized in that Before executing a work step, the management and control platform collects the QR code through a barcode scanner, parses the QR code, and queries the type, quantity, and specifications of the material in the MySQL database to manage the materials in the assembly process, ensuring the completeness of materials in different processes and the accuracy of materials in the assembly process.

8. A manual assembly process control management method, characterized in that: Using the system described in any one of claims 1 to 7, the method comprises: Step 1: Start the control platform, parse the data configured in the process configuration module, find the assembly subsystem configured in the process configuration module, the equipment model of the system, the equipment communication method, the control torque value corresponding to the torque controller, the operating surface setting position of the multi-degree-of-freedom operating table during the operation, the dispensing time setting and dispensing number setting of the digital dispensing machine, and mark the corresponding process step sequence of the equipment through the internal table information of the database; Step 2: After the control platform analyzes the process configuration module data, it analyzes and obtains the assembly subsystem configuration equipment torque controller, multi-degree-of-freedom operating table, digital dispensing machine, barcode scanner and integrated computer. At the same time, the equipment torque controller communication protocol is TCP / IP, the multi-degree-of-freedom operating table communication protocol is TCP / IP, the digital dispensing machine communication protocol is 485 serial port, and the barcode scanner communication protocol is 232 serial port. After the work step analysis is completed, the acquisition control module issues instructions according to the work step logic, and each device returns data to the control platform according to the corresponding interface content; Step 3: The control platform analyzes the returned data to determine whether there is an error in the operation of this step; Step 4: After the assembly is completed, the collected torque value, tightening times, dispensing amount, dispensing times, and corresponding turntable position records are generated into a report.

9. The method according to claim 8, characterized in that The control platform analyzes the returned data to determine whether there is an error in the operation of the process step, including: For the material calibration step, the acquisition control module analyzes the data of the material calibration step, receives the material data collected by the barcode scanner, returns the material code data through the 232 serial port, and compares the material information configured by the material acquisition management module with the returned data to ensure the completeness of the materials to be loaded; For the alignment step, the angle setting signal of the multi-degree-of-freedom operating table in the alignment step is sent to the upper control system through the http interface. After the upper control system automatically executes the command to rotate the x-axis motor to the zero position, the proximity switch is triggered, and the upper control system transmits the in-position signal back to the control platform through the http interface; For the dispensing step, the acquisition control module collects the cumulative number of dispensing signals in the tightening step through the 232 serial port, calculates the dispensing amount through the calculation formula of the dispensing amount, and collects and determines whether the cumulative number and dispensing amount have reached the set value; For the tightening process, after collecting and judging the cumulative number of times and the amount of glue dispensed to reach the set value, the tightening command is sent to the torque controller, and the torque controller starts tightening collection. When the tightening torque reaches the set value, the qualified signal and torque value are sent back to the control platform. When the tightening torque value and the number of tightening times reach the set value, the control platform sends a command to the multi-degree-of-freedom operating table to turn to the set position.

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