A stamping part surface roughness and adhesion linkage testing device

Abstract

The present application belongs to the technical field of stamping part surface quality detection, in particular to a stamping part surface roughness and adhesion force linkage testing device, comprising a base platform, a three-dimensional precision movement module, a roughness detection assembly, an adhesion force testing assembly, a visual positioning system and a data processing and control unit; a workpiece clamp is arranged on the base platform; the three-dimensional precision movement module is erected above the base platform; the roughness detection assembly, the adhesion force testing assembly, a rotary tool library and the visual positioning system are all installed on the moving end of the three-dimensional precision movement module. The present application realizes the recording of roughness detection point coordinate through a coordinate locking module, and controls the adhesion force testing assembly to carry out peeling test at the same detection point by an associated analysis module, thereby establishing a precise mapping relationship between the surface microtopography and the interfacial bonding strength, and providing a reliable detection means for the quantitative optimization of stamping part surface treatment process.

Description

Technical Field

[0001] This invention relates to the field of surface quality testing technology for stamped parts, and in particular to a device for testing the surface roughness and adhesion of stamped parts in conjunction with each other. Background Technology

[0002] In the manufacturing process of stamped parts, surface quality has a decisive impact on the reliability of subsequent coating, bonding, and other processes. Taking stamped parts for thermal controllers as an example, these parts typically serve as the core carrier for circuit connections and coil fixation, and their surfaces need to be coated with silicone sealant to achieve insulation protection. If the surface treatment is inadequate, the adhesion between the sealant and the part substrate will be insufficient, easily leading to seal failure and subsequently causing quality problems such as coil short circuits.

[0003] Currently, the inspection of the surface quality of stamped parts is mainly divided into two independent categories of equipment. The first category is surface roughness measurement equipment, such as contact profilometers, which use diamond styluses to traverse the surface of the part and acquire microscopic morphology parameters such as Ra and Rz through inductive sensors. The second category is adhesion testing equipment, such as pull-out adhesion testers or cross-cut adhesion testers, used to evaluate the bonding strength between coatings or colloids and the substrate.

[0004] However, existing technologies have significant technical limitations. First, roughness measurement and adhesion testing are typically performed at different locations, or even on different samples. The microstructure of the part surface inherently varies across different regions. This separation of testing locations leads to a lack of precise correspondence between roughness and adhesion data, making it difficult to establish a direct mapping between microstructure and interfacial bonding strength, and thus impossible to obtain specific adhesion values ​​corresponding to particular roughness parameters. Therefore, developing a device capable of simultaneously testing roughness and adhesion at the same location has significant engineering application value. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, this invention proposes a test device for the linkage between surface roughness and adhesion of stamped parts.

[0006] This invention proposes a device for testing the surface roughness and adhesion of stamped parts in conjunction with other components. The device includes a base platform, a three-dimensional precision moving module, a roughness detection component, an adhesion testing component, a vision positioning system, and a data processing and control unit. The upper surface of the base platform is provided with a workpiece fixture for fixing the stamped part to be tested. The three-dimensional precision moving module is mounted above the base platform and has degrees of freedom of movement in the X, Y, and Z axes. The three-dimensional precision moving module is equipped with a rotary tool magazine, on which the roughness detection component and the adhesion testing component are respectively mounted. The vision positioning system is mounted on the three-dimensional precision moving module and is used to acquire image information of the surface of the stamped part to be tested and identify positioning feature points. The data processing and control unit is electrically connected to the three-dimensional precision moving module, the roughness detection component, the adhesion testing component, and the vision positioning system, and is used to control the collaborative operation of each component and process the test data.

[0007] Preferably, the roughness detection component includes a stylus holder, a diamond stylus, and an inductive displacement sensor; the diamond stylus is mounted at the lower end of the stylus holder, and the inductive displacement sensor is linked to the diamond stylus to collect surface contour data when the diamond stylus moves along the surface of the stamped part to be tested.

[0008] Preferably, the adhesion testing assembly includes a mounting bracket, a micro-motion cylinder, a flexible pressure head, a horizontal traction mechanism, and a force sensor; the mounting bracket is fixed to the corresponding position of the rotary tool magazine; the micro-motion cylinder is vertically mounted on the mounting bracket; the flexible pressure head is connected to the lower end of the micro-motion cylinder, and the lower surface of the flexible pressure head is a flexible bonding surface used to press the test tape onto the surface of the stamped part to be tested; the horizontal traction mechanism is located on one side of the mounting bracket and includes a traction motor, a lead screw pair, and a traction slider, the traction slider moving horizontally under the drive of the traction motor; the force sensor is mounted on the traction slider and is used to collect peel force data when the traction slider causes the test tape to peel off.

[0009] Preferably, the flexible pressure head has a built-in pressure sensor, which is electrically connected to the data processing and control unit for real-time monitoring of the clamping force applied by the flexible pressure head to the surface of the stamping part to be tested.

[0010] Preferably, the data processing and control unit includes a coordinate locking module and a correlation analysis module; the coordinate locking module is used to record the coordinates of the detection point when the roughness detection component completes the roughness detection; the correlation analysis module is used to control the adhesion testing component to move to the detection point coordinates recorded by the coordinate locking module to perform the adhesion test, and to correlate and store the roughness data and peel force data at that point.

[0011] Preferably, the correlation analysis module also includes a built-in comprehensive evaluation model for calculating a comprehensive interlocking coefficient based on roughness data and peeling force data. The formula for calculating the comprehensive interlocking coefficient is as follows: Where Fpeel is the average peeling force, Ra is the arithmetic mean roughness, Rsm is the average width of the profile element, and σ is a preset stability constant.

[0012] Preferably, the workpiece clamp is a vacuum adsorption clamp, including a plurality of vacuum suction cups disposed on the upper surface of the base platform and a vacuum generator communicating with the vacuum suction cups.

[0013] Preferably, the three-dimensional precision moving module includes an X-axis linear module, a Y-axis linear module, and a Z-axis linear module; the Y-axis linear module is mounted on the base platform, the X-axis linear module is mounted on the Y-axis linear module, the Z-axis linear module is mounted on the X-axis linear module, and the rotary tool library is mounted on the Z-axis linear module.

[0014] Preferably, the rotary tool magazine includes a rotary drive motor and a tool turntable, with at least two tool mounting positions evenly distributed along the circumference of the tool turntable, and the roughness detection component and the adhesion testing component are respectively mounted on different tool mounting positions.

[0015] Preferably, the visual positioning system includes an industrial camera and a ring light source. The industrial camera is used to acquire images of the surface of the stamped part to be tested, and the ring light source is arranged around the lens of the industrial camera.

[0016] Compared with the prior art, the present invention provides a device for testing the surface roughness and adhesion of stamped parts, which has the following advantages: 1. By integrating the roughness detection component and the adhesion testing component into the same three-dimensional precision moving module, and utilizing the coordinate locking module to achieve precise recording and reproduction of coordinates at the same point, it is the first time that surface morphology data and interface bonding strength data can be simultaneously acquired in the same micro-region. This same-point testing method eliminates data noise caused by microscopic differences in different regions, establishing a precise one-to-one correspondence between roughness parameters and adhesion parameters, providing reliable experimental basis for the quantitative optimization of surface treatment processes.

[0017] 2. By calculating the comprehensive interlocking coefficient through the built-in comprehensive evaluation model, the originally separate roughness data and adhesion data are integrated into a comprehensive index, which intuitively reflects the contribution of surface micromorphology to the actual adhesion effect, greatly improving the interpretability of the test data and the value of process guidance.

[0018] 3. The introduction of a rotary tool library and a vision positioning system enables automatic switching of inspection components and automatic recognition of positioning features. The entire inspection process requires no manual intervention, avoiding human error and improving inspection efficiency and repeatability. This device is particularly suitable for the process development and quality control of precision stamped parts with high surface quality requirements, such as thermal controller stamped parts. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rotating tool library structure of the present invention; Figure 3 This is a schematic diagram of the adhesion testing component structure of the present invention; Figure 4 This is a schematic diagram of the module connection of the data processing and control unit of the present invention.

[0020] In the diagram: 1. Base platform; 2. Workpiece fixture; 21. Vacuum chuck; 3. Three-dimensional precision moving module; 31. X-axis linear module; 32. Y-axis linear module; 33. Z-axis linear module; 4. Roughness detection component; 41. Stylus holder; 42. Diamond stylus; 5. Adhesion testing component; 51. Mounting bracket; 52. Micro-motion cylinder; 53. Flexible indenter; 54. Horizontal traction mechanism; 55. Force sensor; 6. Rotary tool magazine; 61. Rotary drive motor; 62. Tool turntable. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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, they should not be construed as limitations on this invention.

[0023] like Figure 1As shown in the figure, the present embodiment provides a joint testing device for surface roughness and adhesion of stamped parts, including a base platform 1, a three-dimensional precision moving module 3, a roughness detection component 4, an adhesion testing component 5, a rotary tool library 6, a vision positioning system, and a data processing and control unit.

[0024] The base platform 1 is made of marble or cast iron, providing good rigidity and vibration damping performance. A workpiece clamp 2 for fixing the stamped part to be tested is provided on the upper surface of the base platform 1. In this embodiment, the workpiece clamp 2 is a vacuum adsorption clamp, including multiple vacuum suction cups 21 embedded in the upper surface of the base platform 1 and a vacuum generator connected to each vacuum suction cup 21. The distribution of the vacuum suction cups 21 can be arranged according to the size and shape of the stamped part to be tested, typically evenly distributed along the four corners of a rectangle or the perimeter of a circle. When the stamped part to be tested is placed on the base platform 1, the vacuum generator is activated, and the vacuum suction cups 21 generate negative pressure to firmly adsorb the stamped part to be tested onto the base platform 1, preventing displacement during the testing process.

[0025] A three-dimensional precision moving module 3 is mounted above the base platform 1 to drive the roughness detection component 4 and the adhesion testing component 5 to move precisely in three-dimensional space. Specifically, the three-dimensional precision moving module 3 includes a Y-axis linear module 32, an X-axis linear module 31, and a Z-axis linear module 33. The Y-axis linear module 32 is fixedly installed on one side of the upper surface of the base platform 1, the X-axis linear module 31 is installed on the Y-axis moving slide, and the Z-axis linear module 33 is installed on the X-axis moving slide. The lower end of the Z-axis moving slide is used to install a rotary tool magazine 6. Each of the above linear modules is driven by a high-precision ball screw and a servo motor, and is equipped with a grating ruler for position feedback to ensure that the positioning accuracy in the X, Y, and Z directions reaches ±1μm, and the repeatability accuracy reaches ±0.5μm, thus providing a hardware foundation for same-point detection.

[0026] like Figure 1 and Figure 2 As shown, the rotary tool magazine 6 is used to quickly switch between the roughness inspection component 4 and the adhesion testing component 5. The rotary tool magazine 6 includes a rotary drive motor 61 and a tool turntable 62. The rotary drive motor 61 is a stepper motor or servo motor, its housing is fixed to the three-dimensional precision moving module 3, and its output shaft extends downwards in the vertical direction. The tool turntable 62 is a circular disc structure, its center is fixedly connected to the output shaft of the rotary drive motor 61, and it can rotate around the vertical axis under the drive of the rotary drive motor 61. At least two tool mounting positions are evenly distributed circumferentially on the tool turntable 62, used to mount the roughness inspection component 4, the adhesion testing component 5, and other spare inspection tools, respectively. Each tool mounting position is equipped with a standardized interface, including a mechanical positioning structure and an electrical connection interface, enabling each inspection component to be quickly and accurately positioned and locked.

[0027] When the rotary tool magazine 6 is in operation, the data processing and control unit controls the rotary drive motor 61 to drive the tool turntable 62 to rotate according to the needs of the inspection process, so that the target inspection component rotates to the working position (i.e., facing downwards and directly facing the stamping part to be inspected), thereby realizing the automatic switching of different inspection functions. This structural design avoids the positional errors and time losses caused by manually changing inspection tools, and provides necessary automated support for same-point inspection.

[0028] like Figure 2 As shown, the roughness detection component 4 is installed on one of the tool mounting positions of the rotary tool magazine 6, and is used to collect microscopic profile data of the surface of the stamped part to be tested. The roughness detection component 4 includes a stylus holder 41, a diamond stylus 42, and an inductive displacement sensor. The upper end of the stylus holder 41 is fixed to the tool mounting position through a standard interface, the diamond stylus 42 is installed at the lower end of the stylus holder 41, and the inductive displacement sensor is set inside the stylus holder 41. Its iron core is linked with the diamond stylus 42. When the diamond stylus 42 moves up and down with the undulation of the surface microscopic profile, the iron core generates a displacement signal in the inductor coil. This signal is amplified and converted from analog to digital to generate surface profile data.

[0029] During roughness inspection, the data processing and control unit first controls the three-dimensional precision moving module 3 to move the roughness inspection component 4 to the preset inspection point. Then, the Z-axis linear module 33 drives the diamond stylus 42 to descend and contact the surface of the stamped part to be inspected, applying a preset stylus force. Subsequently, the X-axis linear module 31 drives the diamond stylus 42 to move at a constant speed along a preset sampling length. During this process, an inductive displacement sensor continuously collects displacement signals. After the inspection is completed, the data processing and control unit calculates surface roughness parameters based on the collected displacement signals, including but not limited to the arithmetic mean roughness Ra, the maximum profile height Rz, the average width of the profile unit Rsm, and the profile support length ratio Rmr(c).

[0030] like Figure 2 and Figure 3 As shown, the adhesion testing assembly 5 is mounted on another tool mounting position of the rotary tool magazine 6. It is used to test the peel force between the surface and the test tape at the same test point for roughness detection, thereby indirectly evaluating the adhesion between the sealant and the surface of the part. The adhesion testing assembly 5 includes a mounting bracket 51, a micro-motion cylinder 52, a flexible pressure head 53, a horizontal traction mechanism 54, and a force sensor 55.

[0031] The upper end of the mounting bracket 51 is fixed to the tool mounting position via a standard interface. The micro-motion cylinder 52 is vertically fixed to the mounting bracket 51. The flexible pressure head 53 is connected to the lower end of the micro-motion cylinder 52. The flexible pressure head 53 is made entirely of elastic material, and its lower surface is a flexible bonding surface. The area of ​​the flexible bonding surface can be designed according to the width of the test tape, typically a 10mm×10mm square or a circle with a diameter of 8mm. The flexible pressure head 53 has a built-in pressure sensor, which is electrically connected to the data processing and control unit for real-time monitoring of the clamping force applied by the flexible pressure head 53 to the surface of the stamped part to be tested.

[0032] A horizontal traction mechanism 54 is located on one side of the mounting bracket 51 and includes a traction motor, a lead screw assembly, and a traction slider. The traction motor is a servo motor, mounted on the side wall of the mounting bracket 51. Its output shaft is connected to the lead screw of the lead screw assembly via a coupling. The traction slider is mounted on the nut of the lead screw assembly and reciprocates horizontally under the drive of the traction motor. A force sensor 55 is mounted on the traction slider, and its end is equipped with a gripper for holding one end of the test tape.

[0033] During adhesion testing, the data processing and control unit first controls the rotary tool library 6 to switch the adhesion testing component 5 to the working position and drives the three-dimensional precision moving module 3 to move the adhesion testing component 5 to the same detection point coordinates as the previous roughness detection. Then, the operator or automatic feeding device pre-fixes one end of the standard test tape to the gripper of the force sensor 55, with the middle portion of the tape suspended directly above the surface of the stamped part to be tested. The micro-actuator 52 drives the flexible pressure head 53 to descend, causing the flexible bonding surface to tightly press the test tape onto the surface of the stamped part. The pressure sensor provides real-time feedback on the clamping force. The data processing and control unit adjusts the air supply pressure of the micro-actuator 52 to stabilize the clamping force at a preset value (e.g., 5N ± 0.1N) and maintain it for a preset holding time (e.g., 5 to 10 seconds). After the holding time is completed, the micro-actuator 52 drives the flexible pressure head 53 to rise and reset, at which point the test tape is firmly adhered to the surface of the stamped part. Next, the horizontal traction mechanism 54 is activated, and the traction motor drives the lead screw pair to move the traction slider in the horizontal direction, thereby peeling off the test tape at a constant rate. During the peeling process, the force sensor 55 collects peeling force data in real time and transmits it to the data processing and control unit. The data processing and control unit records the maximum peeling force, the average peeling force, and the curve of peeling force changing with time or displacement during the peeling process.

[0034] The vision positioning system is installed in the 3D precision moving module 3, adjacent to the rotating tool library 6. The vision positioning system includes an industrial camera and a ring light source. The industrial camera is a high-resolution CMOS industrial camera used to acquire images of the surface of the stamped part to be tested.

[0035] Before inspection, the vision positioning system first performs a global scan of the stamped part to be tested, identifying preset positioning feature points on the part, such as cross marks formed by stamping, edges of round holes, or right-angle vertices. The data processing and control unit establishes a workpiece coordinate system based on the identified positioning feature points and transforms the preset coordinates of each detection point from the theoretical coordinate system to the workpiece coordinate system. In addition, after the roughness inspection is completed, the vision positioning system can also help verify whether the adhesion testing component 5 accurately returns to the same detection point, ensuring the reliability of the same-point test.

[0036] The data processing and control unit includes an industrial computer, a motion control card, a data acquisition card, and corresponding control software. The industrial computer acts as the host computer, running the detection and control software and the human-machine interface; the motion control card is connected to each servo motor driver to control the movement of the three-dimensional precision motion module 3 and the rotary tool library 6; the data acquisition card is connected to the inductive displacement sensor, pressure sensor, force sensor 55, and industrial camera to collect detection data and image information.

[0037] like Figure 4 As shown, from a functional module perspective, the data processing and control unit includes a coordinate locking module and a correlation analysis module. The coordinate locking module is used to record the coordinates of the detection point when the roughness detection component 4 completes roughness detection. Specifically, after the roughness detection component 4 completes surface contour data acquisition at a certain detection point, the coordinate locking module reads the three-dimensional coordinates (X1, Y1, Z1) of the current three-dimensional precision moving module 3 in the workpiece coordinate system from the motion control card, and binds and stores these coordinates with the roughness data of that point. The coordinate locking module also has a coordinate transformation function. When the adhesion testing component 5 needs to switch to the same detection point, since there is a fixed spatial offset between the installation positions of the roughness detection component 4 and the adhesion testing component 5 on the tool turntable 62, the coordinate locking module corrects the coordinates according to this offset to ensure that the center of the flexible indenter 53 of the adhesion testing component 5 can be accurately aligned with the stylus contact point during roughness detection.

[0038] The correlation analysis module controls the adhesion testing component 5 to move to the detection point coordinates recorded by the coordinate locking module for adhesion testing, and correlates and stores the roughness data and peel force data at that point. The correlation analysis module not only stores the raw data but also has a built-in comprehensive evaluation model used to calculate the comprehensive interlocking coefficient (CIC) based on the roughness data and peel force data. The formula for calculating the comprehensive interlocking coefficient is: Where Fpeel is the average peel force in N; Ra is the arithmetic mean roughness in μm; Rsm is the average width of the profile unit in μm; and σ is a preset stability constant with a value of 0.01, used to avoid calculation divergence when the denominator approaches zero. This comprehensive interlocking coefficient (CIC) reflects the actual mechanical anchoring capability provided by the interface under a specific surface microstructure. A larger value indicates higher adhesion under the same roughness conditions, thus allowing for a quantitative evaluation of the quality of surface treatment processes.

[0039] In addition, the correlation analysis module also has data visualization capabilities, which can display the roughness-adhesion correlation of different test points in the form of scatter plots, bar charts or heat maps, and automatically generate test reports.

[0040] The detailed workflow is as follows: Step 1: The operator places the stamped part to be tested on the base platform 1, ensuring its bottom surface contacts the vacuum suction cup 21. The vacuum generator is then activated, and the vacuum suction cup 21 firmly adheres to the stamped part. The operator inputs the model number of the stamped part into the human-machine interface of the data processing and control unit. The system automatically retrieves the preset coordinates of the detection points, such as three detection points set at the center and edge of the coil contact surface.

[0041] Step 2: The data processing and control unit controls the 3D precision moving module 3 to move the vision positioning system above the stamping part to be tested. The industrial camera acquires the image of the part, identifies the positioning feature points, establishes the workpiece coordinate system, and converts the preset detection point coordinates into the actual workpiece coordinate system.

[0042] Step 3: The data processing and control unit controls the 3D precision moving module 3 to move the roughness detection component 4 to the first detection point coordinates. The Z-axis linear module 33 drives the diamond stylus 42 to descend, contacting the part surface with a preset stylus force. The X-axis linear module 31 drives the diamond stylus 42 to slide uniformly along the sampling length, and the inductive displacement sensor collects the surface contour data. After the detection is completed, the coordinate locking module records the current detection point coordinates (X1, Y1, Z1) and binds the roughness data to these coordinates for storage. Subsequently, the diamond stylus 42 rises and resets.

[0043] Step 4: The data processing and control unit controls the rotary tool library 6 to rotate, switching the adhesion testing component 5 to the working position. The correlation analysis module calculates the target coordinates for the adhesion test based on the point coordinates recorded by the coordinate locking module and the spatial offset between the roughness detection component 4 and the adhesion testing component 5. The three-dimensional precision moving module 3 moves the adhesion testing component 5 to these target coordinates. The micro-motion cylinder 52 drives the flexible pressure head 53 to descend, pressing the test tape onto the same point surface. The pressure sensor provides feedback on the clamping force, and the pressure is maintained for a preset time. After the micro-motion cylinder 52 rises and resets, the horizontal traction mechanism 54 peels off the test tape at a constant rate, and the force sensor 55 collects the peeling force data. The correlation analysis module correlates the peeling force data at this point with the previously stored roughness data and calculates the comprehensive interlocking coefficient (CIC).

[0044] Step 5: Following the steps above, complete the linkage test of the remaining test points in sequence.

[0045] Step Six: The correlation analysis module summarizes the roughness parameters, peel force parameters, and comprehensive interlocking coefficient (CIC) of all detection points to generate a test report. If the CIC of a certain detection point is lower than the preset threshold, the system will issue an alarm and suggest adjusting the surface treatment process parameters, such as increasing the sandblasting time or adjusting the electroplating solution concentration.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the surface roughness and adhesion of stamped parts in conjunction with other parameters, characterized in that, It includes a base platform (1), a three-dimensional precision moving module (3), a roughness detection component (4), an adhesion testing component (5), a vision positioning system, and a data processing and control unit; The upper surface of the base platform (1) is provided with a workpiece clamp (2) for fixing the stamped part to be tested. The three-dimensional precision moving module (3) is mounted above the base platform (1) and has the freedom of movement in the X-axis, Y-axis and Z-axis directions; and the three-dimensional precision moving module (3) is equipped with a rotary tool library (6), and the roughness detection component (4) and the adhesion test component (5) are respectively installed on the rotary tool library (6); The visual positioning system is installed on the three-dimensional precision moving module (3) and is used to collect image information of the surface of the stamping part to be tested and identify positioning feature points; The data processing and control unit is electrically connected to the three-dimensional precision moving module (3), the roughness detection component (4), the adhesion testing component (5), and the vision positioning system, respectively, and is used to control the collaborative work of each component and process the detection data; The data processing and control unit includes a coordinate locking module and a correlation analysis module; The coordinate locking module is used to record the coordinates of the detection point when the roughness detection component (4) completes the roughness detection; The correlation analysis module is used to control the adhesion test component (5) to move to the detection point coordinates recorded by the coordinate locking module to perform adhesion test, and to correlate and store the roughness data and peel force data of the point. The correlation analysis module also includes a built-in comprehensive evaluation model for calculating the comprehensive interlocking coefficient based on roughness data and peeling force data. The formula for calculating the comprehensive interlocking coefficient is as follows: Where Fpeel is the average peeling force, Ra is the arithmetic mean roughness, Rsm is the average width of the profile element, and σ is a preset stability constant used to avoid calculation divergence when the denominator approaches zero.

2. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The roughness detection component (4) includes a stylus holder (41), a diamond stylus (42), and an inductive displacement sensor. The diamond stylus (42) is installed at the lower end of the stylus holder (41), and the inductive displacement sensor is linked to the diamond stylus (42) to collect surface contour data when the diamond stylus (42) moves along the surface of the stamped part to be tested.

3. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The adhesion testing assembly (5) includes a mounting bracket (51), a micro-motion cylinder (52), a flexible indenter (53), a horizontal traction mechanism (54), and a force sensor (55). The mounting bracket (51) is fixed to the corresponding station of the rotary tool magazine (6); the micro-motion cylinder (52) is vertically mounted on the mounting bracket (51); the flexible pressure head (53) is connected to the lower end of the micro-motion cylinder (52), and the lower surface of the flexible pressure head (53) is a flexible bonding surface, used to press the test tape onto the surface of the stamped part to be tested; The horizontal traction mechanism (54) is located on one side of the mounting bracket (51) and includes a traction motor, a lead screw pair and a traction slider. The traction slider moves horizontally under the drive of the traction motor. The force sensor (55) is mounted on the traction slider and is used to collect peeling force data when the traction slider drives the test tape to peel off.

4. The device for testing the surface roughness and adhesion of stamped parts according to claim 3, characterized in that, The flexible pressure head (53) has a built-in pressure sensor, which is electrically connected to the data processing and control unit for real-time monitoring of the clamping force applied by the flexible pressure head (53) to the surface of the stamping part to be tested.

5. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The workpiece fixture (2) is a vacuum adsorption fixture, including a plurality of vacuum suction cups (21) disposed on the upper surface of the base platform (1) and a vacuum generator connected to the vacuum suction cups (21).

6. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The three-dimensional precision moving module (3) includes an X-axis linear module (31), a Y-axis linear module (32), and a Z-axis linear module (33). The Y-axis linear module (32) is mounted on the base platform (1), the X-axis linear module (31) is mounted on the Y-axis linear module (32), the Z-axis linear module (33) is mounted on the X-axis linear module (31), and the rotary tool library (6) is mounted on the Z-axis linear module (33).

7. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The rotary tool magazine (6) includes a rotary drive motor (61) and a tool turntable (62). At least two tool mounting positions are evenly distributed along the circumference of the tool turntable (62). The roughness detection component (4) and the adhesion test component (5) are respectively mounted on different tool mounting positions.

8. The device for testing the surface roughness and adhesion of stamped parts according to claim 1, characterized in that, The visual positioning system includes an industrial camera and a ring light source. The industrial camera is used to acquire images of the surface of the stamped part to be tested, and the ring light source is arranged around the lens of the industrial camera.

Images