Full-automatic electronic scale resistance strain gauge angular difference automatic grinding system

Abstract

The utility model discloses a full-automatic electronic scale resistance strain gauge angular difference automatic grinding system, which is used for grinding and optimizing the angular difference of a resistance strain gauge, and comprises a grinding module used for grinding the resistance strain gauge and comprising four grinding machines; the weight loading module comprises five weights, and the weights can be controlled respectively and are arranged in the middle and at four end parts of the resistance strain gauge; the digital-to-analog converter is used for detecting parameters of the resistance strain gauges processed by the digital-to-analog converter; and the control module is connected with the grinding module, the weight loading module and the digital-to-analog converter and is used for receiving the angular difference data transmitted by the digital-to-analog converter, adjusting working parameters of the grinding module and controlling the grinding module to start automatic grinding. According to the full-automatic electronic scale resistance strain gauge angular difference automatic grinding system, a full-automatic working process is adopted, manual intervention is not needed, and production efficiency and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic component processing technology, specifically to a fully automatic electronic scale resistance strain gauge angle difference automatic grinding system. Background Technology

[0002] In traditional electronic scale manufacturing, to reduce errors caused by angular differences, the installation position of strain gauges needs to be precisely adjusted and polished. The typical process involves first installing the strain gauges using mechanical equipment, then manually or through a simple automated system to detect the angular difference, followed by manual polishing. The purpose of the polishing process is to achieve a more uniform stress state on the surface of the strain gauges, thereby improving measurement accuracy.

[0003] Currently, the grinding process of resistance strain gauges is mostly done manually. Workers need to have high experience and skills, otherwise the grinding quality is easily unstable. Manual grinding is limited by the worker's skills and the precision of the equipment, and the effect of angular difference correction is often not ideal, making it difficult to meet the requirements of high-precision weighing. Utility Model Content

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a fully automatic electronic scale resistance strain gauge angle difference automatic grinding system, which adopts a fully automated workflow, requires no manual intervention, and improves production efficiency and stability.

[0005] Technical solution: This utility model discloses a fully automatic electronic scale resistance strain gauge angle difference automatic grinding system, including:

[0006] A grinding module, which is used to grind the resistance strain gauge, includes four grinding machines;

[0007] The weight loading module includes five weights, which can be controlled individually and are placed in the middle and four ends of the resistance strain gauge.

[0008] A digital-to-analog converter, used to detect the parameters of the resistance strain gauge after it has been processed by the digital-to-analog converter;

[0009] A control module, which is connected to the grinding module, the weight loading module and the digital-to-analog converter, is used to receive the angular difference data transmitted by the digital-to-analog converter, adjust the working parameters of the grinding module, and control the grinding module to start automatic grinding.

[0010] Furthermore, the grinding module also includes an adjustable fixing device for clamping the resistance strain gauge.

[0011] Furthermore, the top of the weight is a galvanized iron sheet, and an electromagnet is installed above the weight to attract or release the weight by means of an electric current.

[0012] Furthermore, the control module also includes a user interface.

[0013] Furthermore, the grinding rod of the polishing machine is made of artificial diamond.

[0014] Furthermore, the control module also includes a dedicated controller for controlling the weight loading module.

[0015] Furthermore, the grinder has adjustable speed and pressure.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The system receives angle difference data through the control module and adjusts the working parameters of the grinding module in real time to ensure that the grinding process is more accurate, reduce errors caused by human factors, and improve the consistency and stability of the product.

[0018] (2) The grinding module is equipped with four grinding machines that can work simultaneously. The automated operation reduces manual intervention, making the overall grinding process faster and more efficient, which is suitable for large-scale production needs.

[0019] (3) The system automatically detects the angle difference through the digital-to-analog converter and transmits the angle difference data to the control module to realize real-time monitoring and feedback control, and automatically adjusts the grinding process, thereby ensuring the uniformity and accuracy of the strain gauge. Attached Figure Description

[0020] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0021] Figure 1 This is the control flowchart of the present invention;

[0022] Figure 2 This is a schematic diagram of the resistance strain gauge weight loading test according to the present invention.

[0023] In the diagram: 1. Resistance strain gauge; 2. Grinding module; 21. Grinding machine; 3. Weight loading module; 31. Weight; 32. Galvanized iron sheet; 33. Electromagnet; 4. Digital-to-analog converter; 5. Control module; 51. User interface; 52. Dedicated controller. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0026] like Figure 1 and Figure 2 As shown, this utility model discloses a fully automatic electronic scale resistance strain gauge angle difference automatic grinding system, used for grinding and optimizing the angle difference of resistance strain gauge 1, including:

[0027] Grinding module 2, which is used to grind the resistance strain gauge 1, includes four grinding machines 21;

[0028] The weight loading module 3 includes five weights 31, which can be controlled individually and are placed in the middle and four ends of the resistance strain gauge 1.

[0029] A digital-to-analog converter 4 is used to detect the parameters of the resistance strain gauge 1 after it has been processed by the digital-to-analog converter 4;

[0030] The control module 5 is connected to the grinding module 2, the weight loading module 3 and the digital-to-analog converter 4. It is used to receive the angular difference data transmitted by the digital-to-analog converter 4, adjust the working parameters of the grinding module 2, and control the grinding module 2 to start automatic grinding.

[0031] Using the above structure, the system uses the weight loading module 3 to place weights 31 on the middle and four ends of the resistance strain gauge 1, applying pressure to simulate the stress condition of the resistance strain gauge 1 in actual applications. The digital-to-analog converter 4 detects the resistance change of the strain gauge after applying pressure, collects angle difference data, and transmits it to the control module 5. After receiving the angle difference data transmitted by the digital-to-analog converter 4, the control module 5 analyzes the angle difference data and calculates the required correction amount for the current angle difference of the resistance strain gauge 1 by comparing the actual parameters of the resistance strain gauge 1 with the preset parameters. Based on the angle difference data, the control module 5 automatically adjusts the working parameters of the grinding module 2, including the rotation speed, pressure, and grinding position of the grinding machine 21, and transmits a command to the grinding module 2 to start grinding. The four grinding machines 21 can run simultaneously or individually, depending on the required correction amount for the actual angle difference of the resistance strain gauge 1. During the grinding process, the system can repeatedly detect the angle difference. After each round of grinding, control module 5 reads the updated angle difference data in real time through digital-to-analog converter 4 and analyzes and corrects the results again to ensure that the angle difference gradually approaches the preset range until the required accuracy is achieved. When control module 5 detects that the angle difference of the strain gauge is within the allowable accuracy range, the system determines that grinding is complete and automatically stops grinding module 2 and weight loading module 3, ending the grinding process.

[0032] Specifically, the grinding module 2 consists of four grinding machines 21, arranged at the four ends of the resistance strain gauge 1 to cover the entire grinding area and perform precise grinding based on the angular difference of the resistance strain gauge 1. The weight loading module 3 is equipped with five weights 31, which can be independently controlled and are arranged in the middle and four ends of the strain gauge to ensure uniform force on the entire strain gauge. This multi-point arrangement simulates the actual force on the resistance strain gauge 1. The digital-to-analog converter 4 is responsible for acquiring the internal code value of the resistance strain gauge 1 under force. The internal code value reflects the force state and angular difference of the resistance strain gauge 1, providing data support for subsequent angular difference correction. The digital-to-analog converter 4 can acquire data with high precision, ensuring the accuracy of the angular difference data. The acquired data is directly transmitted to the control module 5 for real-time adjustment.

[0033] In this embodiment, the grinding module 2 also includes an adjustable fixing device for clamping the resistance strain gauge 1. The adjustable fixing device can flexibly adjust the angle and position of the resistance strain gauge 1, so that it is always kept in a suitable position during the grinding process, ensuring uniform surface contact between the grinding machine 21 and the resistance strain gauge 1, correcting angular differences, improving grinding accuracy and consistency, and ensuring the accuracy of measurement results.

[0034] In this embodiment, the top of the weight 31 is a galvanized iron sheet 32. An electromagnet 33 is installed above the weight 31, attracting or releasing the weight 31 through an electric current. By controlling the application or release of the weight 31 through the electromagnet 33, the pressure applied by the weight 31 to the strain gauge can be precisely adjusted. The control method is flexible and highly accurate, and the applied force can be adjusted in a timely manner based on the detected angle difference data to achieve a more uniform grinding effect. Compared with manually adjusting the position of the weight 31, the electromagnetic control method is simpler. The application or release of the weight 31 can be quickly achieved by switching the current, simplifying the operation process, improving the automation level of the system, reducing the need for manual intervention, and further realizing unmanned production.

[0035] In this embodiment, the control module 5 is also equipped with a user interface 51, which allows operators to monitor the grinding process in real time and manually adjust parameters such as the rotation speed and pressure of the grinding machine 21 as needed.

[0036] In this embodiment, the grinding rod of the grinder 21 is made of synthetic diamond. The high hardness of synthetic diamond allows it to maintain a long service life during high-intensity grinding operations, reducing replacement frequency and maintenance costs. Furthermore, the grinder 21 also features adjustable speed and pressure, allowing for the selection of suitable parameters according to processing requirements, thereby enabling more precise control of the grinding process.

[0037] In this embodiment, the dedicated controller 52 directly controls the application and release of force on the weight 31, enabling the system to respond quickly to changes in angular difference data and achieve precise adjustment. The dedicated controller 52 can precisely set the force intensity and duration of the weight 31 at different positions based on the angular difference data, and can flexibly set the grinding scheme according to the angular difference requirements of the strain gauge, improving the targeting and effectiveness of the grinding process.

[0038] The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system described in this utility model has the following control process:

[0039] The digital-to-analog converter 4 uses the CS5552 chip, which is a dual-channel, 32-bit high-precision ADC chip with an SPI interface. It integrates a programmable low-noise instrumentation amplifier of 1 to 128 times and a high-precision Sigma-Delta ADC. The actual effective accuracy at 64 times PGA is 22.9 bits, and the output code rate can be configured from 6.25Hz to 51200Hz. Its high-precision characteristics are used to measure the internal code value of the resistance strain gauge 1 at the four corners.

[0040] The digital-to-analog converter 4 works in conjunction with the control module 5. The control module 5 acquires the internal code value from the digital-to-analog converter 4. After receiving the internal code value, it issues a command to the dedicated controller 52 according to the preset algorithm and parameters, instructing the weight loading module 3 to load or unload weights 31 at the four corners of the electronic scale. At the same time, the control module 5 collects the internal code values ​​of the four corners from the digital-to-analog converter 4 and compares and analyzes them.

[0041] The system determines the corners that need polishing based on the collected maximum and minimum internal code values: selecting the corner with the minimum internal code value activates polishing module 2 for automatic polishing. The polishing time is dynamically adjusted based on the difference between the current internal code value and the maximum internal code value to avoid over-polishing. After polishing is complete, the system reloads weight 31 to measure the internal code value. If the difference is less than the set 0.1d (the calculation method for 0.1 times the internal code will be introduced later), polishing stops. If the target is not met, weight 31 is unloaded, and a new polishing time is calculated based on the previous polishing time and the increase in internal code value before restarting polishing.

[0042] The above process is repeated cyclically, processing the remaining corners in turn. After the first round of polishing, the system checks the internal code values ​​of the four corners. If the difference between the maximum and minimum internal code values ​​is less than 0.1d, the task is complete. Otherwise, the system enters the second round of the loop to ensure that the expected accuracy requirements are met.

[0043] The calculation method for 0.1d is as follows: First, place a weight 31 in the center of the resistance strain gauge 1, typically one-third of the strain gauge 1's range. For example, a 10kg weight 31 is used for a 30kg sensor. Measure the difference in internal code value between the empty weighing pan and the value at one-third of the range. Then divide the difference by the required accuracy (generally 3000 for electronic scales) to obtain the internal code value of 1d. For example, for a BTBX6 / C3 model resistance strain gauge 1 sensor, its full-scale internal code difference is 645220, and its accuracy is 3000. Therefore, the internal code value of 1d is 645220 / 3000 = 215. Thus, the internal code value of 0.1d is 22.

[0044] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A fully automatic electronic scale resistance strain gauge angle difference automatic grinding system, used for grinding and optimizing the angle difference of resistance strain gauges, characterized in that, include: A grinding module, which is used to grind the resistance strain gauge, includes four grinding machines; The weight loading module includes five weights, which can be controlled individually and are placed in the middle and four ends of the resistance strain gauge. A digital-to-analog converter, used to detect the parameters of the resistance strain gauge after it has been processed by the digital-to-analog converter; A control module, which is connected to the grinding module, the weight loading module and the digital-to-analog converter, is used to receive the angular difference data transmitted by the digital-to-analog converter, adjust the working parameters of the grinding module, and control the grinding module to start automatic grinding.

2. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The grinding module also includes an adjustable fixing device for clamping the resistance strain gauge.

3. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The top of the weight is a galvanized iron sheet, and an electromagnet is installed above the weight to attract or release the weight by means of an electric current.

4. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The control module also includes a user interface.

5. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The grinding rod of the polishing machine is made of artificial diamond.

6. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The control module also includes a dedicated controller, which is used to control the weight loading module.

7. The fully automatic electronic scale resistance strain gauge angle difference automatic grinding system according to claim 1, characterized in that, The grinder has adjustable speed and pressure.

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