Ultrasonic machining method and ultrasonic machining equipment for a mobile phone card slot

Abstract

The present application discloses a method and an ultrasonic processing device for a mobile phone card slot. A high-frequency electrical signal is generated by an ultrasonic generator, and the first ultrasonic transducer converts the high-frequency electrical signal into ultrasonic vibration and transmits it to the tool head to control the tool head to perform ultrasonic processing on the material to be processed through rotational vibration. At the same time, high-frequency dynamic force data is collected by a force sensor under the workbench, and the high-frequency electrical signal generated by the ultrasonic generator is adjusted according to the high-frequency dynamic force data. During the process of the tool head performing ultrasonic processing on the material to be processed, the three-axis lead screw of the ultrasonic processing device is driven according to the drive program corresponding to the preset processing three-dimensional shape to adjust the position of the workbench or the position of the ultrasonic spindle, so as to process the material to be processed into a card slot product with the preset processing three-dimensional shape. Compared with the stamping formed card slot and the plastic-containing card slot, the ultrasonic processing of the card slot has higher processing accuracy, greatly reduces the defective problems such as material shortage, deformation, and fracture of the product, and reduces environmental pollution.

Description

Technical Field

[0001] This application relates to the technical field of card holder processing, and particularly to a method and equipment for ultrasonic processing of a mobile phone card holder. Background Art

[0002] A mobile phone card holder, also known as a SIM card tray or SIM card holder, is an important part inside a mobile phone for fixing and connecting a SIM card (Subscriber Identity Module). Currently, mobile phone card holders mainly include metal stamping laminated card holders, all-plastic card holders, stainless steel plastic-coated card holders, and forging-combined aluminum alloy card holders, etc. Among them, during the stamping process of the stamping-formed card holder, impurities such as metal chips, oxides, or other tiny particles will be generated. These impurities may adhere to the inner die, and problems such as fracture, deformation, and the product being prone to bulging and material shortage are likely to occur; while the plastic-containing card holder requires a large amount of plastic, which causes great environmental pollution, and there are also problems such as material shortage and shrinkage. Summary of the Invention

[0003] This application provides a method and equipment for ultrasonic processing of a mobile phone card holder to solve the technical problem of high defective product rate in the current mobile phone card holder processing method.

[0004] To solve the above technical problem, in a first aspect, this application provides a method for ultrasonic processing of a mobile phone card holder, including:

[0005] After blowing off the impurities in the fixture groove with an air gun, place the material to be processed into the fixture groove, and lock the screws on the fixture with an air wrench to lock the fixture to the material to be processed;

[0006] Install the fixture on the workbench of the ultrasonic processing equipment, and close the air valve switch to make the cylinder press the fixture;

[0007] Generate a high-frequency electrical signal through an ultrasonic generator. The first ultrasonic transducer converts the high-frequency electrical signal into ultrasonic vibration and transmits it to the tool head to control the tool head to perform ultrasonic processing on the material to be processed through rotational vibration. At the same time, collect high-frequency dynamic force data through a force sensor under the workbench, and adjust the high-frequency electrical signal generated by the ultrasonic generator according to the high-frequency dynamic force data;

[0008] During the process of the tool head performing ultrasonic processing on the material to be processed, drive the three-axis lead screw of the ultrasonic processing equipment according to the drive program corresponding to the preset processing three-dimensional shape to adjust the position of the workbench or the position of the ultrasonic spindle, so as to process the material to be processed into a card holder product with the preset processing three-dimensional shape;

[0009] Remove the fixture and loosen the screws inside the fixture to take out the card holder product.

[0010] In some of these embodiments, the high-frequency dynamic force data includes axial force, and adjusting the high-frequency electrical signal generated by the ultrasonic generator according to the high-frequency dynamic force data includes:

[0011] When the axial force is greater than the theoretical value, according to a preset adjustment function, reduce the rotational speed, ultrasonic amplitude or feed rate of the tool head, and ensure that the product of the rotational speed and the ultrasonic amplitude and the product of the rotational speed and the feed rate are reduced;

[0012] When the mean square value of the axial force is less than the theoretical value, according to a preset adjustment function, increase the rotational speed or ultrasonic amplitude of the tool head and ensure that the product of the rotational speed and the ultrasonic amplitude is increased, or increase the ultrasonic amplitude or feed rate of the tool head and ensure that the product of the ultrasonic amplitude and the feed rate is increased.

[0013] In some of these embodiments, when the tool head performs ultrasonic machining on the workpiece to be machined, the workpiece to be machined is first roughly machined at a first rotational speed, a first feed rate and a first ultrasonic frequency, and then finely machined at a second rotational speed, a second feed rate and a second ultrasonic frequency, and the first ultrasonic frequency is less than the second ultrasonic frequency.

[0014] In some of these embodiments, both the first rotational speed and the second rotational speed are 10000 rpm, the first feed rate is 1000 mm / s or 1600 mm / s, and the second feed rate is 500 mm / s, 600 mm / s or 800 mm / s.

[0015] In some of these embodiments, the method further includes:

[0016] Retrieve the 3D model corresponding to the preset machining three-dimensional shape of the cato product, and call the CAM software. According to the machining parameters of the 3D model and the machining strategy corresponding to the cato product, plan the machining paths corresponding to the X-axis lead screw, Y-axis lead screw and Z-axis lead screw respectively;

[0017] Generate the machining path into numerical control code to obtain the drive program of the three-axis lead screw.

[0018] In some of these embodiments, the workbench is a two-station interchangeable workbench.

[0019] In some of these embodiments, an inclination adjustment device is provided on the ultrasonic spindle of the ultrasonic machining equipment to adjust the angle of the tool head.

[0020] In some of these embodiments, the tool head is directly connected to the first ultrasonic transducer, and a coolant and abrasive are provided on the contact surface between the tool head and the workpiece to be machined.

[0021] In some of these embodiments, a second ultrasonic transducer is further provided below the workbench. The second ultrasonic transducer converts high-frequency electrical energy into high-frequency mechanical energy and directly acts the high-frequency mechanical energy on the workpiece to be processed on the workbench.

[0022] In a second aspect, the present application further provides an ultrasonic processing device, including an ultrasonic generator, a first ultrasonic transducer, a tool head, a force sensor, a three-axis lead screw, a workbench, a processor, and a memory. The memory is used to store a computer program, and when the computer program is executed by the processor, it implements the ultrasonic processing method for a mobile phone card holder as described in the first aspect.

[0023] Compared with the prior art, the present application has at least the following beneficial effects:

[0024] By locking the workpiece to be processed on the fixture and then using the air cylinder to press the fixture, the stability of the workpiece to be processed during processing is improved, and the defective rate caused by material deviation is reduced. By directly acting the high-frequency mechanical energy of the ultrasonic transducer on the tool head through the ultrasonic processing device, compared with the traditional ultrasonic processing method with a horn, the defective rate caused by excessive amplitude of the tool head can be avoided. At the same time, by controlling the three-axis lead screw, the accuracy of the position control of the workpiece to be processed is improved, and the defective rate of the product is further reduced. Compared with the stamping-molded card holder and the plastic-containing card holder, the ultrasonic processing of the card holder has higher processing accuracy, greatly reducing defective problems such as material shortage, deformation, and fracture of the product, and reducing environmental pollution. Description of the Drawings

[0025] Figure 1 is a schematic flowchart of the ultrasonic processing method for a mobile phone card holder shown in the embodiments of the present application;

[0026] Figure 2 is a schematic structural diagram of the card holder product shown in the embodiments of the present application;

[0027] Figure 3 is a schematic structural diagram of the hardware components of the ultrasonic processing device shown in the embodiments of the present application;

[0028] Figure 4 is a schematic software structure diagram of the ultrasonic processing device shown in the embodiments of the present application. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0030] Please refer to Figure 1 ,Figure 1 It is a schematic flow chart of an ultrasonic processing method for a mobile phone card holder provided by an embodiment of the present application. The ultrasonic processing method for the mobile phone card holder in this embodiment includes steps S101 to S105, which are described in detail as follows:

[0031] Step S101, after using an air gun to blow off the impurities in the fixture groove, place the material to be processed into the fixture groove, and use an air wrench to tighten the screws on the fixture, so that the fixture locks the material to be processed.

[0032] In this step, before clamping, check whether the material to be processed has defects such as burrs and deformation. If there are no defects, use an air gun to blow off the inside of the fixture groove, place the material to be processed into the fixture groove, check whether it is clamped in place, and then use an air wrench to tighten the screws. To improve processing efficiency, the fixture has multiple clamping grooves and can clamp multiple materials to be processed simultaneously.

[0033] Step S102, install the fixture on the workbench of the ultrasonic processing equipment, and close the air valve switch to make the cylinder press the fixture.

[0034] In this step, use the cylinder to press the fixture to ensure that the material to be processed will not be displaced during processing and ensure the processing accuracy. The workbench can be a double-station interchangeable workbench to realize the interchange of two stations, and can complete the processing of two materials to be processed in sequence on the basis of one clamping and then disassemble them together.

[0035] Step S103, generate a high-frequency electrical signal through an ultrasonic generator. The first ultrasonic transducer converts the high-frequency electrical signal into ultrasonic vibration and transmits it to the tool head, so as to control the tool head to perform ultrasonic processing on the material to be processed through rotational vibration. At the same time, collect high-frequency dynamic force data through a force sensor under the workbench, and adjust the high-frequency electrical signal generated by the ultrasonic generator according to the high-frequency dynamic force data.

[0036] In this embodiment, the ultrasonic generator is connected to the first ultrasonic transducer, the force sensor is connected to the total control of the ultrasonic processing equipment, and the total control is connected to the ultrasonic generator. After the total control starts the program, the ultrasonic generator generates a high-frequency electrical signal according to the program. The first ultrasonic transducer receives the high-frequency electrical signal, converts the high-frequency electrical energy into high-frequency mechanical energy, and transmits the high-frequency mechanical energy to the tool head of the ultrasonic spindle, so that the tool head generates high-frequency vibration to be able to perform ultrasonic processing on the material to be processed. At the same time, the force sensor collects the high-frequency dynamic force data during the processing of the material to be processed, feeds the high-frequency dynamic force data back to the total control, and the total control processes the high-frequency dynamic force data and controls the ultrasonic generator to adjust its high-frequency electrical signal to achieve real-time detection and feedback, and avoid the occurrence of defective products due to excessive high-frequency vibration force or excessive amplitude.

[0037] Optionally, an inclination adjustment device is provided on the ultrasonic spindle of the ultrasonic processing equipment to adjust the angle of the tool head. The tool head used in traditional ultrasonic processing usually processes in one direction, while for an inclined concave processing surface, the tool head needs to be replaced. In this embodiment, an inclination adjustment device is provided on the ultrasonic spindle to adjust the angle of the tool head, thereby adjusting the processing direction of the tool head.

[0038] Optionally, the tool head is directly connected to the first ultrasonic transducer, and a coolant and abrasives are provided on the contact surface between the tool head and the workpiece to be processed. The size of the tool head and the amplitude of the tool head cross-section used in this embodiment are smaller than those of the tool head used in traditional ultrasonic processing to improve the processing accuracy. At the same time, the first ultrasonic transducer is directly connected to the tool head, so that the high-frequency mechanical energy generated by the first ultrasonic transducer directly acts on the tool head, meeting the requirements of micro-machining. In addition, coolant and abrasives are added to improve the processing efficiency and reduce the temperature.

[0039] In some embodiments, when the tool head performs ultrasonic processing on the workpiece to be processed, the workpiece to be processed is subjected to a primary rough machining at a first rotational speed, a first feed rate, and a first ultrasonic frequency, and then a secondary finish machining is performed on the workpiece to be processed at a second rotational speed, a second feed rate, and a second ultrasonic frequency, where the first ultrasonic frequency is less than the second ultrasonic frequency.

[0040] Optionally, both the first rotational speed and the second rotational speed are 10000 rpm, the first feed rate is 1000 mm / s or 1600 mm / s, and the second feed rate is 500 mm / s, 600 mm / s, or 800 mm / s.

[0041] In this embodiment, if the rotational speed is too low, burrs are likely to occur. If the rotational speed is too high, the vibration will be unstable, thus affecting the machining accuracy. In this embodiment, 10,000 rpm is adopted as the rotational speed of the tool head, which can ensure stability and reduce the surface roughness of the product. To quickly machine the product contour, 1,000 mm / s or 1,600 mm / s is adopted as the feed rate for rough machining. To improve the machining accuracy of finish machining, 500 mm / s, 600 mm / s or 800 mm / s is adopted as the feed rate. Among them, the actual selection of the first feed rate and the second feed rate is related to the tool. For example, when using a tool of D40*4F*2.6°*5H*d4.6*D10*50L, the first feed rate is 1,000 mm / s and the second feed rate is 500 mm / s; when using a tool of D5*4F*15H*D6*50L, the first feed rate is 1,600 mm / s and the second feed rate is 800 mm / s. The first ultrasonic frequency is less than the second ultrasonic frequency, so as to use low-frequency ultrasonic waves to process large pieces of material in the rough machining stage, and use high-frequency ultrasonic waves to improve the surface finish in the finish machining stage. Multi-frequency ultrasonic waves can improve the machining accuracy and efficiency while reducing thermal damage.

[0042] In some embodiments, the high-frequency dynamic force data includes axial force, and adjusting the high-frequency electrical signal generated by the ultrasonic generator according to the high-frequency dynamic force data includes:

[0043] When the axial force is greater than the theoretical value, according to a preset adjustment function, reduce the rotational speed, ultrasonic amplitude or feed rate of the tool head, and ensure that the product of the rotational speed and the ultrasonic amplitude and the product of the rotational speed and the feed rate are reduced;

[0044] When the mean square value of the axial force is less than the theoretical value, according to a preset adjustment function, increase the rotational speed or ultrasonic amplitude of the tool head and ensure that the product of the rotational speed and the ultrasonic amplitude is increased, or increase the ultrasonic amplitude or feed rate of the tool head and ensure that the product of the ultrasonic amplitude and the feed rate is increased.

[0045] In this embodiment, during the ultrasonic machining process, the axial force refers to the force applied along the machining direction, which is mainly generated by the cutting action between the tool head and the workpiece. To optimize the machining quality and ensure the safety of the equipment, when it is detected that the axial force deviates from the theoretical value, adjustment is required to maintain the stability of the machining process. Specifically, according to the change of the axial force, the rotational speed, ultrasonic amplitude or feed rate of the tool head is adjusted according to a preset adjustment function.

[0046] Adjustment of rotational speed, amplitude or feed rate: When the actually measured axial force is greater than the theoretical value, it may be caused by the abrasive grains that have worn off and fallen off being unable to be removed from the machining gap and repeatedly scraping the tool surface. It is necessary to reduce the rotational speed, ultrasonic amplitude or feed rate of the tool head to reduce the axial force, reduce ineffective scraping and maintain stable machining. Specifically, it includes: reducing the rotational speed and ultrasonic amplitude of the tool head to reduce the cutting effect of ultrasonic waves on the material, so as to reduce the cutting force and friction; reducing the feed rate to reduce the cutting amount per unit time, thereby reducing the axial force.

[0047] Selective adjustment: When the mean square value of the actually measured axial force (i.e., the degree of variation of the axial force) is less than the theoretical value, it may be that the abrasive grains in the actual machining are not on the same height plane, resulting in incomplete cutting depths being the same. Therefore, appropriately increase the rotational speed of the tool head to optimize the machining conditions; increasing the ultrasonic amplitude and feed rate can further eliminate the adverse effects brought by the abrasive grains on different height planes and improve the machining efficiency.

[0048] It can be understood that the specific adjustment values of the rotational speed, ultrasonic amplitude and feed rate are determined based on a preset adjustment function. The preset adjustment function can be a linear function set by the user according to experience to characterize the relationship between the axial force and the rotational speed, ultrasonic amplitude and feed rate.

[0049] Step S104, during the ultrasonic machining of the to-be-machined material by the tool head, drive the three-axis lead screw of the ultrasonic machining equipment according to the drive program corresponding to the preset machining three-dimensional shape to adjust the position of the workbench or the position of the ultrasonic spindle, so as to machine the to-be-machined material into a capping product with the preset machining three-dimensional shape.

[0050] In this step, when the tool head rotates and vibrates, cooperate with the three-axis lead screw to adjust the position of the workbench or the position of the ultrasonic spindle to adjust the machining surface and machining points of the to-be-machined material, so as to achieve high-precision machining of the complex shape of the small-size capping. At the same time, during the ultrasonic machining process, due to the low cutting force and high-frequency vibration, the surface finish of the product is improved, reducing the subsequent surface treatment requirements, and the ultrasonic machining can reduce tool wear, extend the service life of the tool, reduce the tool replacement frequency, and save costs.

[0051] In some embodiments, the method further includes:

[0052] Retrieve the 3D model corresponding to the preset machining three-dimensional shape of the capping product, and call the CAM software. According to the machining parameters of the 3D model and the machining strategy corresponding to the capping product, plan the machining paths corresponding to the X-axis lead screw, Y-axis lead screw and Z-axis lead screw respectively;

[0053] Generate the machining path into numerical control code to obtain the drive program of the three-axis lead screw.

[0054] In this embodiment, according to the production plan or processing request, a preset processing three-dimensional shape of a specific cato product is retrieved from a database or a product catalog. For example Figure 2 The schematic diagram of the cato shape shown; Start computer-aided manufacturing (CAM) software (such as Mastercam, Fusion 360, etc.), and import the 3D model file obtained just now into the CAM software. According to the processing requirements of the cato product, input necessary processing parameters, such as material category, cutting speed, feed rate, depth, etc., and select a suitable cutting tool and set its parameters, such as diameter, material, cutting type, etc. At the same time, it is also necessary to select a suitable processing strategy, such as rough machining, finish machining, contour machining, etc., and set the cutting sequence and strategy. The CAM software will automatically generate the processing paths corresponding to the X-axis, Y-axis, and Z-axis according to the input 3D model, processing parameters, and processing strategy. Then, use the path simulation function of the CAM software to check and verify whether the generated processing path meets the expectations, check whether there are potential collisions or unreasonable cutting paths, and finally convert the processing path into numerical control code (G code or M code). In this embodiment, by setting the three-axis lead screw, the driving of the ultrasonic spindle, the fixture mounting plate, and the machining axis fixing seat is more precise, improving the machining accuracy.

[0055] Optionally, as Figure 3 shown, a second ultrasonic transducer is further provided under the workbench. The second ultrasonic transducer converts high-frequency electrical energy into high-frequency mechanical energy and directly acts the high-frequency mechanical energy on the workpiece to be machined on the workbench. Setting the transducer under the workbench can more effectively transfer the ultrasonic energy directly to the machining tool and the workpiece, improve the energy utilization rate, and thus improve the material removal rate. And it can optimize the vibration transmission path, ensure that the ultrasonic vibration is evenly distributed to the machining tool, increase the vibration intensity and effectiveness, and thus improve the machining performance. At the same time, it helps to reduce the interference of external environment or mechanical vibration on the ultrasonic vibration, ensuring the stability and consistency of the machining process.

[0056] Step S105, remove the fixture and loosen the screw inside the fixture to take out the cato product.

[0057] In this step, clean the waste on the workbench, remove the fixture, loosen the screw inside the fixture to take out the cato product, visually inspect the product for any defects such as burrs, dents, deformations, material shortages, and missing structures, and place the cato products without defects on a tray and recycle them to the next process.

[0058] Figure 4 It is a schematic structural diagram of an ultrasonic machining device provided by an embodiment of the present application. As Figure 4 shown, the ultrasonic machining device 4 of this embodiment includes: at least one processor 40 ( Figure 4Only one is shown in the figure), a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40. When the processor 40 executes the computer program 42, the steps in any of the above method embodiments are implemented.

[0059] The ultrasonic machining device may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art can understand that Figure 4 This is only an example of the ultrasonic machining device 4 and does not constitute a limitation on the ultrasonic machining device 4. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include an ultrasonic generator, a first ultrasonic transducer, a tool head, a force sensor, a three-axis lead screw, a workbench, etc.

[0060] The so-called processor 40 may be a central processing unit (CPU). The processor 40 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0061] In some embodiments, the memory 41 may be an internal storage unit of the ultrasonic machining device 4, such as the hard disk or memory of the ultrasonic machining device 4. In other embodiments, the memory 41 may also be an external storage device of the ultrasonic machining device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the ultrasonic machining device 4. Further, the memory 41 may also include both the internal storage unit and the external storage device of the ultrasonic machining device 4. The memory 41 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of the computer program, etc. The memory 41 may also be used to temporarily store data that has been output or will be output.

[0062] In addition, an embodiment of the present application further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0063] An embodiment of the present application provides a computer program product. When the computer program product runs on a computer device, the computer device is caused to execute the steps in each of the above method embodiments.

[0064] In several embodiments provided by the present application, it can be understood that each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the module, the program segment, or the part of code includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the block may occur in a different order from that marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved.

[0065] If the function is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc that can store program codes.

[0066] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present application. It should be understood that the above description is only specific embodiments of the present application and is not used to limit the protection scope of the present application. In particular, it is pointed out that for those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for ultrasonic processing of a mobile phone tray, characterized in that: include: After using an air gun to blow away the impurities in the fixture groove, put the material to be processed into the fixture groove, and use an air screwdriver to lock the screws on the fixture so that the fixture locks the material to be processed; Install the fixture on the workbench of the ultrasonic processing equipment, and close the air valve switch to make the cylinder press the fixture; A high-frequency electrical signal is generated by an ultrasonic generator, and the high-frequency electrical signal is converted into ultrasonic vibration by a first ultrasonic transducer and transmitted to a tool head, so as to control the tool head to ultrasonically process the material to be processed by rotating vibration, and at the same time, high-frequency dynamic force data is collected by a force sensor under a workbench, and the high-frequency electrical signal generated by the ultrasonic generator is adjusted according to the high-frequency dynamic force data; the tool head is directly connected to the first ultrasonic transducer without an amplitude transformer, and a contact surface between the tool head and the material to be processed is provided with a coolant and an abrasive, and a second ultrasonic transducer is further provided under the workbench, the second ultrasonic transducer is directly connected to the workbench, and the second ultrasonic transducer converts high-frequency electrical energy into high-frequency mechanical energy, and directly acts the high-frequency mechanical energy on the material to be processed on the workbench; During the ultrasonic processing of the material to be processed by the tool head, the three-axis screw of the ultrasonic processing equipment is driven according to the driver corresponding to the preset processing three-dimensional shape to adjust the position of the workbench or the ultrasonic spindle position, so as to process the material to be processed into a tray product of the preset processing three-dimensional shape; Remove the fixture, loosen the screws inside the fixture and take out the card tray product; The high-frequency dynamic force data includes an axial force, and the step of adjusting the high-frequency electrical signal generated by the ultrasonic generator according to the high-frequency dynamic force data includes: When the axial force is greater than the theoretical value, the rotation speed, ultrasonic amplitude or feed rate of the tool head is reduced according to a preset adjustment function, and the product of the rotation speed and the ultrasonic amplitude and the product of the rotation speed and the feed rate are reduced; When the mean square value of the axial force is less than the theoretical value, according to the preset adjustment function, the rotational speed or ultrasonic amplitude of the tool head is increased and the product of the rotational speed and the ultrasonic amplitude is increased, or the ultrasonic amplitude or feed rate of the tool head is increased and the product of the ultrasonic amplitude and the feed rate is increased.

2. The ultrasonic processing method for a mobile phone card holder according to claim 1, characterized in that: When the tool head performs ultrasonic processing on the material to be processed, the material to be processed is rough-processed once according to a first rotational speed, a first feed rate and a first ultrasonic frequency, and then the material to be processed is fine-processed twice according to a second rotational speed, a second feed rate and a second ultrasonic frequency, and the first ultrasonic frequency is less than the second ultrasonic frequency.

3. The ultrasonic processing method for a mobile phone card holder according to claim 2, characterized in that: The first rotational speed and the second rotational speed are both 10000 rpm, the first feed rate is 1000 mm / s or 1600 mm / s, and the second feed rate is 500 mm / s, 600 mm / s or 800 mm / s.

4. The ultrasonic processing method for a mobile phone card tray according to claim 1, characterized in that: The method further comprises: Retrieve the 3D model corresponding to the preset processing three-dimensional shape of the CATO product, and call the CAM software to plan the processing paths corresponding to the X-axis lead screw, Y-axis lead screw and Z-axis lead screw respectively according to the processing parameters of the 3D model and the processing strategy corresponding to the CATO product; The processing path is generated into a numerical control code to obtain a driver program for the three-axis lead screw.

5. The ultrasonic processing method for a mobile phone card holder according to claim 1, characterized in that: The workbench is a double-station interchangeable workbench.

6. The ultrasonic processing method for a mobile phone card tray according to claim 1, characterized in that: An inclination adjustment device is provided on the ultrasonic spindle of the ultrasonic machining equipment to adjust the angle of the tool head.

7. An ultrasonic processing device, characterized in that: It includes an ultrasonic generator, a first ultrasonic transducer, a tool head, a force sensor, a three-axis screw, a workbench, a processor and a memory, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the mobile phone card tray ultrasonic processing method as described in any one of claims 1 to 6 is implemented.

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