Digital image measuring device applied to strain analysis of composite energy field coupling processing material

Abstract

The utility model discloses a digital image measuring device applied to strain analysis of a composite energy field coupling processing material. The device mainly comprises a cutter, an ultrasonic vibration device, a linear transmission guide rail, an ultrasonic generator, a sample, a clamping mechanism, a high-speed camera, a first LED flash lamp light source, a second LED flash lamp light source, a double-column truss, a laser, a laser fixing device, a lifting platform, a motor and a supporting platform. According to the utility model, a digital image measurement method is applied to research on the instantaneous deformation behavior of a sample in the composite energy field coupling processing process, and the strain of a processed material under the composite energy field coupling action can be represented in real time. By controlling the ultrasonic vibration device and the laser, the distribution of strain fields of the sample in different machining processes can be measured. The device disclosed by the utility model provides a basis for revealing a deep mechanism of composite energy field coupling processing.

Description

Technical Field

[0001] This invention belongs to the field of material cutting performance testing, and utilizes digital image measurement method to measure the strain and deformation behavior of materials in real time during composite energy field coupled processing. Background Technology

[0002] Compared to traditional metal cutting, composite energy field coupling machining technology utilizes the coupling effect of energy fields such as lasers and ultrasonic vibrations to improve material properties and enhance the machining efficiency and quality of difficult-to-machine materials. In composite energy field coupling machining, complex force-thermal loads significantly affect machining effects such as chip formation, surface quality, and tool wear by altering the material's deformation behavior. Therefore, achieving in-situ characterization of material deformation behavior is of great significance for a deeper understanding of the mechanical properties and microstructural evolution of materials.

[0003] Currently, regarding the measurement of material deformation behavior during machining, patent CN202310657134.X discloses a laminated material cutting strain testing device based on DIC technology, which uses digital image correlation technology to measure the strain information of the laminated material at different material interfaces during the cutting process; patent CN201720477382.6 discloses a high-speed cutting deformation measurement device based on DIC technology and infrared imaging technology, which combines digital image correlation method and infrared imaging method to measure the strain and temperature field of the material during high-speed cutting.

[0004] The measuring devices disclosed in the aforementioned patents only measure the deformation behavior of materials during conventional processing and cannot measure the deformation behavior of materials during composite energy field coupling processing, thus having limitations. Existing testing equipment cannot effectively analyze the material deformation behavior during composite energy field coupling processing. Therefore, there is a need to develop a measuring device that can be applied to strain analysis of materials processed by composite energy field coupling. Summary of the Invention

[0005] The purpose of this invention is to address the problem that existing testing equipment cannot effectively analyze the material deformation behavior during composite energy field coupling processing. This invention provides a digital image measurement device for strain analysis of materials processed by composite energy field coupling.

[0006] According to this utility model, a digital image measurement device for strain analysis of composite energy field coupled processing materials is provided. The device includes a cutting tool, an ultrasonic vibration device, a linear transmission guide rail, an ultrasonic generator, a sample, a clamping mechanism, a high-speed camera, an LED flash light source one, an LED flash light source two, a double-column truss, a laser, a laser fixing device, a lifting platform, a motor, and a support platform. The cutting tool is connected to the ultrasonic vibration device by screws. The ultrasonic vibration device is connected to the linear transmission guide rail by screws and a slider. The ultrasonic generator is connected to the ultrasonic vibration device. The sample is fixed in front of the cutting tool by the clamping mechanism. The high-speed camera is connected to the double-column truss by fasteners and screws. The LED flash light source one and LED flash light source two are connected to the double-column truss by ball joint structure and screws. The laser is connected to the laser fixing device by screws. The laser fixing device is connected to the lifting platform by screws. The lifting platform is fixedly connected to the linear transmission guide rail by screws and a slider. The motor is connected to the linear transmission guide rail by ball screws, screws, and a slider. The linear transmission guide rail, the clamping mechanism, and the double-column truss are connected to the support platform by bolts.

[0007] The laser is used to apply a laser energy field to the sample; the ultrasonic vibration device is used to drive the tool to vibrate periodically in a two-dimensional ultrasonic elliptical vibration trajectory, thereby applying an ultrasonic vibration energy field to the sample; the LED flash light source one and LED flash light source two provide ambient lighting for the measurement process; the high-speed camera is perpendicularly irradiated onto the surface of the sample being measured.

[0008] The linear transmission guide rail is used to drive ultrasonic vibration devices and lasers. Its characteristic is that it is driven by a motor and a ball screw. The motor is connected to the ball screw through a coupling, and the ball screw is connected to the linear transmission guide rail through screws and sliders.

[0009] According to the present invention, a digital image measurement device for strain analysis of materials processed by composite energy field coupling is provided, characterized in that the laser fixing device includes bolts, nut one, nut two, fixing plate one, fixing plate two, and fixing plate three. Fixing plate one, fixing plate two, and fixing plate three are fixedly connected by screws, and fixing plate three is connected to bolts by nuts one and two.

[0010] According to the present invention, a digital image measurement device for strain analysis of composite energy field coupled processing materials is provided, characterized in that the lifting platform includes a first bearing platform, a second bearing platform, a lifting knob, a lifting buffer plate, a first lifting frame, and a second lifting frame. The lifting knob is connected to the first bearing platform through a fixing clamp. The first bearing platform is fixedly connected to the first and second lifting frames through grooves. The first and second lifting frames are fixedly connected to the second bearing platform through screws. The lifting buffer plate is connected to the first and second lifting frames through screws.

[0011] A digital image measurement device for strain analysis of materials processed by composite energy field coupling is characterized by the following steps in the measurement process:

[0012] (a) Before measurement, apply a speckle coating to the surface of the sample. Secure the sample using a clamping mechanism, positioning it in front of the ultrasonic vibration device. A high-speed camera is used to vertically illuminate the sample surface, and the shooting parameters are set using the computer's shooting software. Adjust the illumination positions of LED flash light source one and LED flash light source two on both sides of the double-column truss using a ball joint structure to provide ambient lighting for the measurement process. Secure the laser using a laser fixing device, then adjust the position of the laser fixing device on the lifting platform. Simultaneously, rotate the lifting knob to move lifting frame one and lifting frame two, thereby adjusting the height of the lifting platform and determining the laser's position and illumination angle. Ensure that the laser spot output by the laser illuminates the sample surface and is positioned 1.5 mm directly in front of the tool tip along the cutting direction. Turn on the ultrasonic generator and set the amplitude and ultrasonic vibration frequency parameters.

[0013] (ii) At the start of the measurement, the ultrasonic generator is turned on, causing the ultrasonic vibration device to drive the tool to vibrate periodically along the cutting depth direction in a two-dimensional ultrasonic elliptical vibration trajectory. Simultaneously, the laser is activated via the laser control software on the computer to output a laser spot. Then, the motor is started to drive the ball screw to rotate, which in turn drives the linear transmission guide rail to drive the ultrasonic vibration device and the laser to perform composite energy field coupling cutting on the sample along the cutting direction. At the same time, a high-speed camera is activated to capture real-time images of the deformation behavior of the sample during the composite energy field coupling cutting process.

[0014] (iii) After the measurement is completed, turn off the ultrasonic generator and the laser via the laser control software on the computer. At the same time, drive the linear transmission guide rail with a motor to return the ultrasonic vibration device and the laser to the initial cutting position;

[0015] (iv) The captured images and videos are analyzed frame by frame using computer-based image processing and analysis software to obtain the strain field distribution of the sample during the composite energy field coupled cutting process.

[0016] This utility model has the following obvious advantages:

[0017] (1) This utility model applies digital image measurement method to study the instantaneous deformation behavior of samples in the process of composite energy field coupling processing, which can characterize the strain of the processed material under the action of composite energy field coupling in real time, and provides a basis for revealing the deep mechanism of composite energy field coupling processing;

[0018] (2) By controlling the ultrasonic vibration device and the laser, this utility model can measure the strain and deformation behavior of the sample in four different processing processes: conventional processing, ultrasonic-assisted processing, laser-assisted processing and composite energy field coupling processing, thereby characterizing the strain of the processed material in different processing processes.

[0019] (3) The present invention uses a digital image measurement method to measure the strain and deformation behavior of materials at any time during the composite energy field coupling process in real time. The measurement accuracy is high and the error is small. Attached image description:

[0020] Figure 1 It is a digital image measurement device used for strain analysis of materials processed by composite energy field coupling;

[0021] Figure 2 This is a schematic diagram of a composite energy field coupling device;

[0022] Figure 3 This is a schematic diagram of the laser fixing device structure;

[0023] Figure 4 This is a schematic diagram of the lifting platform structure;

[0024] Figure 5 This is a schematic diagram illustrating the principle of strain and deformation measurement in composite energy field coupled processing materials.

[0025] Explanation of reference numerals in the attached drawings: 1-Tool; 2-Ultrasonic vibration device; 3-Linear transmission guide rail; 4-Ultrasonic generator; 5-Sample; 6-Clamping mechanism; 7-High-speed camera; 8-LED flash light source one; 9-LED flash light source two; 10-Double column truss; 11-Laser; 12-Laser fixing device; 13-Lifting platform; 14-Motor; 15-Supporting platform; 1201-Bolt; 1202-Nut one; 1203-Nut two; 1204-Fixing plate one; 1205-Fixing plate two; 1206-Fixing plate three; 1301-Bearing platform one; 1302-Bearing platform two; 1303-Lifting knob; 1304-Lifting buffer plate; 1305-Lifting frame one; 1306-Lifting frame two; A-Laser spot; B-Two-dimensional ultrasonic elliptical vibration trajectory; C-Strain. Detailed implementation method:

[0026] like Figure 1As shown, 1-cutting tool; 2-ultrasonic vibration device; 3-linear transmission guide rail; 4-ultrasonic generator; 5-sample; 6-clamping mechanism; 7-high-speed camera; 8-LED flash light source one; 9- LED flash light source 2; 10-Double column truss; 11-Laser; 12-Laser fixing device; 13-Lifting platform; 14-Motor; 15-Supporting platform, wherein the cutting tool 1 is connected to the ultrasonic vibration device 2 by screws, the ultrasonic vibration device 2 is connected to the linear transmission guide rail 3 by screws and sliders, the ultrasonic generator 4 is connected to the ultrasonic vibration device 2, the sample 5 is fixed in front of the cutting tool 1 by the clamping mechanism 6, the high-speed camera 7 is connected to the double column truss 10 by fasteners and screws, LED flash light source 1 7 and LED flash light source 2 8 are connected to the double column truss 10 by ball joint structure and screws, the laser 11 is connected to the laser fixing device 12 by screws, the laser fixing device 12 is connected to the lifting platform 13 by screws, the lifting platform 13 is fixedly connected to the linear transmission guide rail 3 by screws and sliders, the motor 14 is connected to the linear transmission guide rail 3 by ball screws, screws and sliders, the linear transmission guide rail 3, the clamping mechanism 6 and the double column truss 10 are connected to the support platform 15 by bolts.

[0027] like Figure 2 As shown, the composite energy field coupling device includes a cutting tool 1, an ultrasonic vibration device 2, a laser 11, a laser fixing device 12, and a lifting platform 13. The cutting tool 1 is connected to the ultrasonic vibration device 2 by screws, the laser 11 is connected to the laser fixing device 12 by screws, and the laser fixing device 12 is connected to the lifting platform 13 by screws.

[0028] like Figure 3 As shown, the laser fixing device 12 includes bolts 1201, nuts 1202, nuts 1203, fixing plate 1204, fixing plate 1205, and fixing plate 1206. Fixing plate 1204, fixing plate 1205, and fixing plate 1206 are fixedly connected by screws. Fixing plate 1206 is connected to bolts 1201 by nuts 1202 and nuts 1203.

[0029] like Figure 4 As shown, the lifting platform 13 includes a first bearing platform 1301, a second bearing platform 1302, a lifting knob 1303, a lifting buffer plate 1304, a first lifting frame 1305, and a second lifting frame 1306. The lifting knob 1303 is connected to the first bearing platform 1301 by a fixing clip. The first bearing platform 1301 is fixedly connected to the first lifting frame 1305 and the second lifting frame 1306 by a groove. The first lifting frame 1305 and the second lifting frame 1306 are fixedly connected to the second bearing platform 1302 by screws. The lifting buffer plate 1304 is connected to the first lifting frame 1305 and the second lifting frame 1306 by screws.

[0030] like Figure 5 The diagram shows the principle of strain and deformation measurement for materials processed using composite energy field coupling. The measurement principle is as follows: LED flash light source 8 and LED flash light source 9 provide ambient lighting for the measurement process. An ultrasonic vibration device 2 drives the tool 1 to periodically vibrate along the cutting depth direction using a two-dimensional ultrasonic elliptical vibration trajectory B. A laser spot A is output from a laser 11 and irradiates the surface of the sample being measured, positioned 1.5 mm directly in front of the tip of the tool 1 along the cutting direction. The tool 1 and the laser spot A move at the same speed along the cutting direction, performing composite energy field coupling cutting on the sample. Simultaneously, a high-speed camera 7 is activated to capture real-time images of the sample's deformation behavior. After the measurement, the captured images and videos are post-processed and imported into a computer. Image processing and analysis software is used to analyze and calculate the images and videos frame by frame, thereby obtaining the strain C of the sample during the composite energy field coupling cutting process.

[0031] The following is combined Figures 1-5 The specific implementation of the present invention will be further described below.

[0032] Before measurement, speckle coating is applied to the surface of sample 5. Sample 5 is fixed in place using clamping mechanism 6, positioned in front of ultrasonic vibration device 2. High-speed camera 7 illuminates the surface of sample 1 perpendicularly, and shooting parameters are set using computer-based shooting software. The illumination positions of LED flash light source 1 8 and LED flash light source 2 9 on both sides of double-column truss 10 are adjusted using ball joint structure to provide ambient lighting for the measurement process. Laser 11 is fixed using laser fixing device 12, and then the position of laser fixing device 12 on lifting platform 13 is adjusted. Simultaneously, lifting knob 1303 is rotated to move lifting frame 1305 and lifting frame 2 1306, thereby adjusting the height of lifting platform 13, and thus determining the position and illumination angle of laser 11, ensuring that the laser spot A output by laser 11 illuminates the surface of sample 5, and that laser spot A is located 1.5 mm directly in front of the tip of tool 1 along the cutting direction. Ultrasonic generator 4 is turned on, and amplitude and ultrasonic vibration frequency parameters are set.

[0033] At the start of the measurement, the ultrasonic generator 4 is activated, causing the ultrasonic vibration device 2 to drive the tool 1 to vibrate periodically along the cutting depth direction in a two-dimensional ultrasonic elliptical vibration trajectory B. Simultaneously, the laser 11 is activated via the laser control software on the computer to output laser spot A. The motor 14 is started to drive the ball screw to rotate, which in turn drives the linear transmission guide rail 3 to transmit the ultrasonic vibration device 2 and the laser 11 to perform composite energy field coupling cutting on the sample 5 along the cutting direction. At the same time, the high-speed camera 7 is activated to capture real-time images of the deformation behavior of the sample during the composite energy field coupling cutting process.

[0034] After the measurement is completed, the ultrasonic generator 4 is turned off, and the laser 11 is turned off via the laser control software on the computer. At the same time, the linear transmission guide rail 3 is driven by the motor 14, which in turn drives the ultrasonic vibration device 2 and the laser 11 back to the initial cutting position.

[0035] The strain field distribution of sample 1 during the composite energy field coupled cutting process was obtained by analyzing and calculating the captured images and videos frame by frame using computer-based image processing and analysis software.

Claims

1. A digital image measuring device applied to strain analysis of a material processed by a complex energy field coupling, characterized by, The utility model relates to a kind of laser ultrasonic measurement system, including tool, ultrasonic vibration device, linear transmission guide rail, ultrasonic generator, sample, clamping mechanism, high-speed camera, LED flash light source one, LED flash light source two, double-column truss, laser, laser fixing device, lifting platform, motor, support platform, wherein tool is connected by screw with ultrasonic vibration device, ultrasonic vibration device is connected by screw, slider and linear transmission guide rail, ultrasonic generator is connected with ultrasonic vibration device, sample is fixed in the tool front by clamping mechanism, high-speed camera is connected by fixing piece, screw and double-column truss, LED flash light source one and LED flash light source two are connected by ball hinge pair structure, screw and double-column truss, laser is connected by screw and laser fixing device, laser fixing device is connected by screw and lifting platform, lifting platform is fixedly connected by screw, slider and linear transmission guide rail, motor is connected by ball screw, screw and slider and linear transmission guide rail, linear transmission guide rail, clamping mechanism and double-column truss are connected by bolt and support platform; The laser is used to apply laser energy field to the sample; The ultrasonic vibration device is used to drive the tool to vibrate periodically in a two-dimensional ultrasonic elliptical vibration track, so as to apply ultrasonic vibration energy field to the sample; The LED flash light source one and the LED flash light source two provide environmental illumination for the measurement process; The high-speed camera is vertically irradiated on the surface of the measured sample. The linear transmission guide rail is used to drive the ultrasonic vibration device and the laser, and is characterized in that the motor is connected with the ball screw through a shaft coupling, and the ball screw is connected with the linear transmission guide rail through a screw and a slider.

2. The digital image measuring device for strain analysis of a material subjected to a complex energy field coupling process according to claim 1, wherein The laser fixing device includes a bolt, a nut one, a nut two, a fixed plate one, a fixed plate two and a fixed plate three.

3. The digital image measuring device for strain analysis of a material subjected to a complex energy field coupling process according to claim 1, wherein The lifting platform includes a bearing platform one, a bearing platform two, a lifting knob, a lifting buffer plate, a lifting frame one and a lifting frame two.

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