A rolling tool with pressure detection and pressure monitoring system

Abstract

The present invention discloses a rolling tool with pressure detection and a pressure monitoring system, comprising a main shaft, wherein the left side of the main shaft is fixedly connected to a shaft front end flange, the left side of the shaft front end flange is mounted with a rolling head, the right side of the main shaft is fixedly connected to a shaft rear end flange, the right side of the shaft rear end flange is fixedly connected with a spring retainer, the outer wall of the main shaft is provided with a spline section, the outer side of the spline section is provided with a ball spline, and the left side of the main shaft is fixedly connected with a front end cover. The application of the rolling pressure monitoring system can help the main engine manufacturer to discover the quality change of the product in time and stop the loss in time, and the adjustment of the rolling process can also be quickly calibrated by the pressure monitoring system to improve the maintenance efficiency of the equipment. At the same time, by setting the moving block and the bolt, the end head and the shaft front end flange can be quickly positioned, which is convenient for the installation of the end head and the shaft front end flange, and the setting of the protective cover can prevent dust from adhering to the pressure sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of plate processing, and in particular to a hemming tool with pressure detection and a pressure monitoring system. Background Art

[0002] In common hemming tools, the connection between the roller and the robot flange is rigid. The roller applies a rigid load to the sheet metal. The hemming quality mainly depends on the robot's walking trajectory. Moreover, the hemming head is easily worn due to the rigid contact, and the final process quality is difficult to guarantee. Pressure-regulated hemming tools are hemming tools that have a pressure buffer device such as a spring, cylinder, or hydraulic cylinder between the roller and the robot flange. Therefore, the use of pressure-regulated hemming tools can effectively improve the hemming quality and protect the robot. However, the existing pressure-regulated hemming tools still have the following problems when used:

[0003] As the final process in the door cover production line, hemming quality monitoring directly impacts the final product quality. Currently, the hemming heads used by most OEMs are unable to detect pressure changes during the process. This means hemming quality monitoring relies solely on regular manual maintenance and overhaul, but cannot automatically identify equipment problems immediately. Therefore, a hemming tool with pressure detection is needed to address this issue. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a rolling tool and pressure monitoring system with pressure detection. The application of the rolling pressure monitoring system can help the main engine manufacturer to discover the quality changes of the product and stop the loss in time. The adjustment of the rolling process can also be achieved through the pressure monitoring system to quickly calibrate the rolling tool, thereby improving the maintenance efficiency of the equipment. At the same time, through the setting of the moving block and the bolt, the end head and the front end flange of the shaft can be quickly positioned, which is convenient for the installation of the end head and the front end flange of the shaft, and the setting of the protective cover prevents dust from adhering to the pressure sensor.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The camming mechanism is constituted of a plurality of camming members, each of which is connected to a plurality of guide rails, and a plurality of guide rails are connected to the plurality of guide rails respectively. The guide rails are connected to a plurality of guide rails respectively on a plurality of platforms, and the plurality of guide rails are connected to the plurality of platforms.

[0007] Preferably, the left side of the main shaft is fixedly connected to the front end flange of the shaft, the left side of the front end flange of the shaft is mounted with a roller head, the right side of the main shaft is fixedly connected to the rear end flange of the shaft, and the right side of the rear end flange of the shaft is fixedly connected to a spring retainer, the outer wall of the main shaft is provided with a spline section, the outer side of the spline section is provided with a ball spline, the left side of the main shaft is fixedly connected to the front end cover, the right side of the front end cover is fixedly connected to two mounting seats, the ball spline is fixedly connected to the front end cover and the two mounting seats, the right side of the two mounting seats is fixedly connected to the rear end cover, the left side of the rear end cover is installed with a pressure sensor, the left side of the pressure sensor is fixedly connected with a pad, the pad is elastically connected to the rear end flange of the shaft through a main spring, and an oil nozzle is installed on the mounting seat located below.

[0008] Preferably, the front end cover is fixedly connected to the two mounting seats by a first screw, the rear end cover is fixedly connected to the two mounting seats by a second screw, the pad is fixedly connected to the pressure sensor by a third bolt, and the pressure sensor is fixedly connected to the rear end cover by multiple fourth bolts.

[0009] Preferably, a connecting groove is provided on the left side of the front end flange of the shaft, a connecting block is fixedly connected to the right side of the roller head, movable grooves are provided on the upper and lower sides of the connecting block, a movable block is slidably connected in each of the movable grooves, and the adjacent surfaces of the two movable blocks are elastically connected to the inner wall of the corresponding movable groove away from the groove through a reset spring, and the inner top and inner bottom of the connecting groove are provided with card slots that match the movable block.

[0010] Preferably, a plurality of positioning rods are fixedly connected to the right inner wall of the connecting groove, and a plurality of positioning openings matching with the positioning rods are provided on the connecting block.

[0011] Preferably, the opposite sides of the two moving blocks are provided with thread grooves, the first bolts are threadedly connected in the two thread grooves, the opposite sides of the two clamping grooves are provided with openings, and the opposite sides of the two first bolts extend through the openings to the outside.

[0012] Preferably, each of the two first bolts is provided with a retaining ring.

[0013] Preferably, two protective covers are provided on the outer sides of the two mounting seats, the opposite sides of the two mounting seats are fixedly connected with fixed blocks, the adjacent sides of the two protective covers are fixedly connected with fixed grooves, the upper and lower ends of the rear end cover are fixedly connected with rectangular blocks, and the adjacent sides of the two protective covers are provided with rectangular grooves.

[0014] Preferably, the right interior of the two rectangular grooves is threadedly connected with a second bolt, the right sides of the two second bolts extend to the outside, and the right sides of the two rectangular blocks are provided with threaded holes matching the second bolts.

[0015] To achieve the above-mentioned object of the invention, the present invention further provides a pressure monitoring system for a hemming tool, comprising the following steps:

[0016] S1: User management: Administrators can use their own account system to modify and save users' basic information, and users can log in to the system through the login interface;

[0017] S2: Hemming tool management. After entering the system, users can maintain hemming tool data, including entering hemming tool information, uploading pictures, and setting static pressure thresholds.

[0018] S3: Model hemming area setting: used to import new models through the system, set the test points, upper and lower pressure limits of the hemming area, and set the continuous deviation points;

[0019] S4: Monitoring module: transmits the data generated by the pressure sensor to the data acquisition module, which feeds the data results back to the business logic module, thereby performing logical processing on the structured data and then transmitting the processed structure to the presentation module to ensure the user experience;

[0020] S5: Query module: This module provides the function of viewing historical data. The system supports query by hem area and query by workpiece.

[0021] The present invention has the following beneficial effects:

[0022] Compared with existing technologies, the elastic roller head structure that combines ball splines and main springs is adopted. At the same time, the independently developed software system can collect the pressure of the rolling edge in real time, ensuring that the main engine manufacturer can quickly identify product quality defects and reduce the production of unqualified parts.

[0023] Compared with the prior art, the provision of the movable groove and the clamping groove allows the end head and the shaft front end flange to be quickly pre-fixed, facilitating the installation of the end head and the shaft front end flange. At the same time, the provision of the first bolt ensures the stability of the pre-fixation, and the end head can be easily disassembled.

[0024] Compared with the prior art, the provision of two protective covers can prevent dust from adhering to the pressure sensor, ensuring the normal use of the pressure sensor, and at the same time, the two protective covers can be easily installed and removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of the pressure monitoring system;

[0026] Figure 2 It is the flow chart of the monitoring module;

[0027] Figure 3 This is a structural schematic diagram of a hemming tool with pressure detection proposed by the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the internal structure;

[0029] Figure 5 This is a schematic structural diagram of Example 2 of the present invention;

[0030] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 7 This is a schematic structural diagram of Example 3 of the present invention;

[0032] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0033] In the figure: 1 roller head, 2 shaft front end flange, 3 main shaft, 4 front end cover, 5 ball spline, 6 oil nozzle, 7 shaft rear end flange, 8 mounting seat, 9 main spring, 10 pad, 11 pressure sensor, 12 spring retainer, 13 rear end cover, 14 connecting groove, 15 connecting block, 16 positioning port, 17 positioning rod, 18 moving groove, 19 return spring, 20 moving block, 21 threaded groove, 22 first bolt, 23 retaining ring, 24 opening, 25 protective cover, 26 fixing block, 27 fixing groove, 28 second bolt, 29 rectangular block, 30 rectangular groove, 31 threaded hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0035] Reference Figure 1-4 , a rolling tool with pressure detection, including a main shaft 3, the left side of the main shaft 3 is fixedly connected to the shaft front end flange 2, the left side of the shaft front end flange 2 is mounted with a rolling head 1, the right side of the main shaft 3 is fixedly connected to the shaft rear end flange 7, the right side of the shaft rear end flange 7 is fixedly connected to a spring retainer 12, the outer wall of the main shaft 3 is provided with a spline section, the outer side of the spline section is provided with a ball spline 5, the spline section and the ball spline 5 cooperate to ensure that the main shaft 3 moves in an axial straight line and limit the radial rotation of the main shaft 3, the left side of the main shaft 3 is fixedly connected to the front end cover 4, and the right side of the front end cover 4 is fixedly connected to two The mounting seat 8, the ball spline 5 is fixedly connected to the front end cover 4 and the two mounting seats 8, the right side of the two mounting seats 8 is fixedly connected to the rear end cover 13, the left side of the rear end cover 13 is installed with a pressure sensor 11, the left side of the pressure sensor 11 is fixedly connected with a pad 10, the pad 10 is elastically connected to the rear end flange 7 of the shaft through the main spring 9, the oil nozzle 6 is installed on the mounting seat 8 below, and a data collector, an amplifier and a computer are provided. The amplifier amplifies the electrical signal generated by the pressure sensor 11 and transmits it to the data collector, and the data collector transmits the electrical signal to the computer.

[0036] Among them, the shaft front end flange 2 is fixedly connected to the main shaft 3 by multiple first fastening bolts, the shaft front end flange 2 is fixedly connected to the roller head 1 by multiple second fastening bolts, the right side of the main shaft 3 is fixedly connected to the shaft rear end flange 7 by a third fastening bolt, the shaft rear end flange 7 is connected to the spring retainer 12 by multiple fourth fastening bolts, the front end cover 4 is fixedly connected to the two mounting seats 8 by a first screw, the rear end cover 13 is fixedly connected to the two mounting seats 8 by a second screw, the gasket 10 is fixedly connected to the pressure sensor 11 by a third bolt, and the pressure sensor 11 is fixedly connected to the rear end cover 13 by multiple fourth bolts.

[0037] The present invention also provides a pressure monitoring system for a hemming tool, comprising the following steps:

[0038] S1: User management: Administrators can use their own account system to modify and save users' basic information, and users can log in to the system through the login interface;

[0039] 1) User login:

[0040] a) User enters account information;

[0041] b) The user enters a password;

[0042] c) Click the Login button.

[0043] 2) User logout:

[0044] a) The user clicks the [Exit] button in the upper right corner of the form;

[0045] b) The system pops up a prompt, and the user clicks the [OK] button to complete the logout operation, and the system returns to the login page;

[0046] c) If the user clicks the [Cancel] button, the logout operation is abandoned.

[0047] 3) User changes password:

[0048] a) The user clicks to enter the personal center page and performs the [Change Password] operation;

[0049] b) The system pops up a password change page, the user fills in the old password, new password and confirm password, and clicks the [OK] button;

[0050] c) After the modification is successful, the user is prompted that the password has been successfully modified.

[0051] 4) User modifies personal information:

[0052] a) Users can enter the personal center to maintain their personal information;

[0053] b) When the system jumps to the personal center page, it automatically brings out the user's existing information, such as ID number, mobile phone number, name, etc.;

[0054] c) At this time, you can modify your phone number, name and other information, but other information such as ID number cannot be edited;

[0055] d) Click the [Save] button on the page to complete the editing. The system will update and persist the user's personal information.

[0056] 5) User Management:

[0057] a) [User Management] menu on the administrator user homepage;

[0058] b) The system jumps to the user list page, displaying all user information in the system.

[0059] 6) Administrators view user details

[0060] a) The administrator double-clicks a row of data, or clicks the edit button behind a row;

[0061] b) The system jumps to the details page and displays the corresponding user information.

[0062] 7)Administrator adds user:

[0063] a) On the administrator user page, click the [Add] button;

[0064] b) The system jumps to the new page where the administrator can fill in information including mobile phone number, name, employee number, etc.

[0065] c) The administrator user clicks the [Save] button to complete this operation.

[0066] 8) Administrator modifies user:

[0067] a) On the administrator user page, click the [Edit] button;

[0068] b) The system automatically jumps to the edit page, where administrators can edit information including mobile phone number, name, employee number, etc.

[0069] c) The administrator user clicks the [Save] button to complete this operation.

[0070] 9) Administrator deletes user:

[0071] a) In the administrator user section, select the user data and click the [Delete] button;

[0072] b) The system pops up a message to confirm deletion;

[0073] c) The administrator user clicks the [OK] button to complete user deletion.

[0074] 10) Administrator resets user password:

[0075] a) On the administrator user page, click the [Reset Password] button;

[0076] b) The system pops up a password reset page, the administrator user fills in the new password and confirms the password, and clicks the [OK] button;

[0077] c) After the reset is successful, the reset password page will close and a message will pop up stating that the password was successfully reset.

[0078] S2: Hemming tool management. After entering the system, users can maintain hemming tool data, including entering hemming tool information, uploading pictures, and setting static pressure thresholds.

[0079] a) The operator can choose to add or edit hemming tool data, including tool number, tool name, upload tool image, set static pressure threshold and other information;

[0080] b) User permissions need to be configured before entering and editing hemming tool information.

[0081] S3: Model hemming area setting: used to import new models through the system, set the test points, upper and lower pressure limits of the hemming area, and set the continuous deviation points;

[0082] a) Importing new models: set the model, workstation number, panel screenshot, associate multiple hemming areas and hemming tools (select hemming tools);

[0083] b) Setting of test points, upper and lower pressure limits for each hemming area, and display of upper and lower pressure limit curves after setting;

[0084] c) Setting of continuous deviation points (for risk calibration);

[0085] d) User permissions need to be configured before entering and editing the hemming area information.

[0086] S4: Monitoring module: transmits the data generated by the pressure sensor 11 to the data acquisition module, which feeds the data results back to the business logic module, thereby performing logical processing on the structured data, and then transmits the processed structure to the presentation module to ensure the user experience;

[0087] a) Display the information of the current workpiece. The operator selects the workstation number and the model, workshop number and workpiece time information can be obtained from the PLC;

[0088] b) The workpiece hemming information and the workstation hemming tool information; varies with the vehicle model and workstation number;

[0089] c) Display the real-time pressure curve and upper and lower pressure limits;

[0090] d) The out-of-tolerance point needs to be highlighted and the current measurement status indicated. If it exceeds the upper and lower limits, it will be red; if it does not exceed the limits, it will be green;

[0091] e) By default, any logged-in user can operate this page.

[0092] S5: Query module: This module provides the function of viewing historical data. The system supports query by hem area and query by workpiece.

[0093] a) Historical data screening, optional vehicle model, work station number, production time, hemming area and detection curve data;

[0094] b) Display the corresponding hemming tool number and hemming area number;

[0095] c) Display the real-time pressure curve and upper and lower pressure limits and highlight the pressure exceeding the limit;

[0096] d)Support Excel file export.

[0097] The functional principle of the present invention can be explained through the following operation mode: when rolling a part, the rolling tool is fixed around the rolling fixture, and then the part is rolled using the rolling head 1. At the same time, during the rolling process, the pressure sensor 11 generates an electrical signal, which is transmitted to the data collector;

[0098] The collector converts the analog signal into a digital signal that can be recognized by the computer and inputs it into the system's computer. At the same time, the line PLC synchronously collects the position signal of each robot and inputs it to the computer through the switch. The computer decodes the message to obtain the process pressure value and the corresponding robot position, and then matches the pressure signal with the robot's position signal to obtain the position-pressure curve of different hemming tools in the whole process.

[0099] The computer compares the real-time collected pressure value with the standard process pressure. When the difference exceeds the system threshold, the monitoring system will send an alarm to the production line to remind the operator that there is a quality risk in the process. Example

[0100] Reference Figure 5-6 The difference between this embodiment and embodiment 1 is that a connecting groove 14 is provided on the left side of the flange 2 at the front end of the shaft, and a connecting block 15 is fixedly connected to the right side of the roller head 1. Moving grooves 18 are provided on the upper and lower sides of the connecting block 15, and a moving block 20 is slidably connected in each moving groove 18. The adjacent surfaces of the two moving blocks 20 are elastically connected to the inner wall of the corresponding moving groove 18 away from the slot through a reset spring 19. The inner top and inner bottom of the connecting groove 14 are provided with a card slot that matches the moving block 20. The opposite sides of the two moving blocks 20 are provided with a threaded groove 21, and the two threaded grooves 21 are threadedly connected with a first bolt 22. The opposite sides of the two card slots are provided with an opening 24, and the opposite sides of the two first bolts 22 extend through the opening 24 to the outside world, and the two first bolts 22 are provided with a retaining ring 23.

[0101] A plurality of positioning rods 17 are fixedly connected to the right inner wall of the connecting groove 14 , and a plurality of positioning openings 16 matching with the positioning rods 17 are provided on the connecting block 15 .

[0102] In this embodiment, when fixing the roller head 1 to the front end flange 2 of the shaft, the connecting block 15 on the roller head 1 is first placed into the connecting groove 14, so that the multiple positioning rods 17 pass through the corresponding positioning openings 16. Since the left sides of the two moving blocks 20 are inclined, the two moving blocks 20 will enter the moving groove 18 during the process of placing the connecting block 15 into the connecting groove 14;

[0103] When the connecting block 15 reaches the predetermined position, the two moving blocks 20 are moved into the slots under the elastic action of the return spring 19. Then, the first bolt 22 is rotated so that the first bolt 22 is screwed into the thread groove 21, thereby fixing the moving block 20. Then, the roller head 1 is fixed to the shaft front end flange 2 using a plurality of second fastening bolts.

[0104] It is worth mentioning that when the first bolt 22 is screwed into the thread groove 21, the moving block 20 moves into the moving groove 18, compressing the return spring 19. When the return spring 19 is compressed to the maximum compression amount, the moving block 20 will not enter the moving groove 18 again, and the first bolt 22 can be screwed into the thread groove 21 smoothly.

[0105] When the roller head 1 needs to be disassembled, multiple second fastening bolts are loosened. At this time, the first bolt 22 can be rotated to disengage the first bolt 22 from the thread groove 21, and then the first bolt 22 is moved to the right to offset the thread groove 21. The two first bolts 22 are pressed to move them relative to each other, so that the moving block 20 disengages the slot, and the roller head 1 can be disengaged from the front end flange 2 of the shaft. Example

[0106] Reference Figure 7-8 The difference between this embodiment and embodiment 1 is that two protective covers 25 are provided on the outer sides of the two mounting seats 8, the opposite sides of the two mounting seats 8 are fixedly connected with fixed blocks 26, the adjacent sides of the two protective covers 25 are fixedly connected with fixed grooves 27, the upper and lower ends of the rear end cover 13 are fixedly connected with rectangular blocks 29, the adjacent sides of the two protective covers 25 are provided with rectangular grooves 30, the right sides of the two rectangular grooves 30 are threadedly connected with second bolts 28, the right sides of the two second bolts 28 extend to the outside, and the right sides of the two rectangular blocks 29 are provided with threaded holes 31 that match the second bolts 28.

[0107] In this embodiment, after the hemming tool is installed, two protective covers 25 are placed on the upper and lower sides of the two mounting seats 8, so that the two fixing blocks 26 enter the fixing grooves 27, and at the same time the two rectangular blocks 29 enter the rectangular grooves 30, and then multiple second bolts 28 are rotated so that the second bolts 28 are threaded into the threaded holes 31, thereby fixing the two protective covers 25 to the rear end cover 13 to prevent dust from adhering to the pressure sensor 11 and causing a malfunction of the pressure sensor 11.

[0108] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hemming tool with pressure detection, comprising a spindle (3), characterized in that: The left side of the main shaft (3) is fixedly connected to the shaft front end flange (2), the left side of the shaft front end flange (2) is mounted with a roller head (1), the right side of the main shaft (3) is fixedly connected to the shaft rear end flange (7), the right side of the shaft rear end flange (7) is fixedly connected to a spring retainer (12), the outer wall of the main shaft (3) is provided with a spline section, the outer side of the spline section is provided with a ball spline (5), the left side of the main shaft (3) is fixedly connected to the front end cover (4), the right side of the front end cover (4) is fixedly connected to two mounting seats (8), the ball spline (5) is fixedly connected to the front end cover (4) and the two mounting seats (8), the right sides of the two mounting seats (8) are fixedly connected to the rear end cover (13), the left side of the rear end cover (13) is installed with a pressure sensor (11), the left side of the pressure sensor (11) is fixedly connected with a pad (10), the pad (10) is elastically connected to the shaft rear end flange (7) through a main spring (9), and an oil nozzle (6) is installed on the mounting seat (8) located below; A connecting groove (14) is provided on the left side of the front end flange (2) of the shaft, a connecting block (15) is fixedly connected to the right side of the roller head (1), and movable grooves (18) are provided on the upper and lower sides of the connecting block (15), and a movable block (20) is slidably connected in each movable groove (18), and adjacent surfaces of the two movable blocks (20) are elastically connected to the inner wall of the corresponding movable groove (18) away from the groove opening through a return spring (19), and the inner top and inner bottom of the connecting groove (14) are provided with a clamping groove that matches the movable block (20); Two protective covers (25) are provided on the outer sides of the two mounting seats (8), the opposite sides of the two mounting seats (8) are fixedly connected with fixed blocks (26), the adjacent sides of the two protective covers (25) are fixedly connected with fixed grooves (27), the upper and lower ends of the rear end cover (13) are fixedly connected with rectangular blocks (29), and the adjacent sides of the two protective covers (25) are provided with rectangular grooves (30).

2. The hemming tool with pressure detection according to claim 1, characterized in that: The front end cover (4) is fixedly connected to the two mounting seats (8) by a first screw, the rear end cover (13) is fixedly connected to the two mounting seats (8) by a second screw, the backing plate (10) is fixedly connected to the pressure sensor (11) by a third bolt, and the pressure sensor (11) is fixedly connected to the rear end cover (13) by a plurality of fourth bolts.

3. The hemming tool with pressure detection and pressure monitoring system according to claim 1, characterized in that: A plurality of positioning rods (17) are fixedly connected to the right inner wall of the connecting groove (14), and a plurality of positioning openings (16) matching the positioning rods (17) are provided on the connecting block (15).

4. The hemming tool with pressure detection according to claim 1, characterized in that: The two moving blocks (20) are provided with threaded grooves (21) on opposite sides thereof, first bolts (22) are threadedly connected in the two threaded grooves (21), openings (24) are provided on opposite sides thereof, and the opposite sides of the two first bolts (22) extend through the openings (24) to the outside.

5. The hemming tool with pressure detection according to claim 4, characterized in that: A retaining ring (23) is provided on each of the two first bolts (22).

6. The hemming tool with pressure detection according to claim 5, characterized in that: The right sides of the two rectangular slots (30) are both threadedly connected to the second bolts (28), the right sides of the two second bolts (28) extend to the outside, and the right sides of the two rectangular blocks (29) are provided with threaded holes (31) that match the second bolts (28).

7. A pressure monitoring system for a hemming tool, used for a hemming tool with pressure detection according to any one of claims 1 to 6, characterized in that: The steps include: S1: User management: Administrators can use their own account system to modify and save users' basic information, and users can log in to the system through the login interface; S2: Hemming tool management. After entering the system, users can maintain hemming tool data, including entering hemming tool information, uploading pictures, and setting static pressure thresholds. S3: Model hemming area setting: used to import new models through the system, set the test points, upper and lower pressure limits of the hemming area, and set the continuous deviation points; S4: Monitoring module: transmits the data generated by the pressure sensor (11) to the data acquisition module, which feeds the data results back to the business logic module, thereby performing logical processing on the structured data, and then transmits the processed structure to the presentation module to ensure the user experience; S5: Query module: This module provides the function of viewing historical data. The system supports query by hem area and query by workpiece.

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